Observational Evidence type of evidence is needed for a hypothesis to be supported or not supported.
Hypothesis:
Hypothesis is a statement which can be proved or disproved. It is a statement capable of being tested. Based on the results of the test case, we have identified the type of it.
Given,
Here we needed to find the type of evidence is needed for a hypothesis to be supported or not supported.
Observational Evidence type of evidence is needed for a hypothesis to be supported or not supported.
Observational evidence is ones where researchers observe the effect of a risk factor, diagnostic test, treatment or other intervention without trying to change who is or isn't exposed to it.
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Solve 26 ≤ −8z − 26
pls pls helppp
The solution to the system of inequality is z ≤ -13/2
Solving inequalitiesInequality are expression that are not separated by an equal sign.
Given the inequality expression
26 ≤ −8z − 26
Add 26 to both sides
26 + 26 ≤ −8z − 26 + 26
52 ≤ −8z
−8z ≥ 52
z ≤ -52/8
z ≤ -13/2
Hence the solution to the system of inequality is z ≤ -13/2
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Answer:
B) Z ≤ −6.5
Step-by-step explanation:
Since it's Z ≤ -13/2, then it must be B, since 13 divided by 2 is 6.5.
Brainliest, anyone???
on the unit circle, where 0 less-than pi, when is tangent theta undefined?on the unit circle, where 0 less-than pi, when is tangent theta undefined?
The tanΘ will be undefined at Θ = π/2, where 0≤Θ≤π and tanΘ will be undefined at Θ = 3π/2 where π≤Θ≤2π.
A circle is what?A circle is a shape made up of any and all points inside a plane that are situated at a specific distance from the center point. In other words, it is the path a moving point in a plane takes to move around a curve while maintaining a constant distance from another point.
According to the given data:The unit circle the point (cosΘ, sinΘ) lies on the circle.
Where, 0≤Θ≤2π
We know that tanΘ is the ratio of the sinΘ to cosΘ:
tanΘ = sinΘ/cosΘ
So,
tanΘ will be undefined when cosΘ = 0
So in the interval 0≤Θ≤π
CosΘ will be zero at π/2
The tanΘ will be undefined at Θ = π/2, where 0≤Θ≤π and tanΘ will be undefined at Θ = 3π/2 where π≤Θ≤2π.
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Answer: C
Step-by-step explanation:
Hope this helps. E2020
Under her cell phone plan, Ximena pays a flat cost of $44.50 per month and $4 per
gigabyte. She wants to keep her bill at $50.10 per month. How many gigabytes of data
can she use while staying within her budget?
If Ximena pays a flat cost of $44.50 per month and $4 per gigabyte and she wants to keep her bill at $50.10 per month, then she can use 1.4 gigabyte of data while staying within her budget.
Given,
The flat cost of cell phone plan = $44.50 per month
Cost per gigabyte =$4
She wants to keep her bill amount = $50.10
Consider the number of gigabyte used as x
Then the linear inequality will become
44.50+4x≤50.10
4x≤50.10-44.50
4x≤5.6
x≤1.4
Hence, If Ximena pays a flat cost of $44.50 per month and $4 per gigabyte and she wants to keep her bill at $50.10 per month, then she can use 1.4 gigabyte of data while staying within her budget
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parentheses. Write the rounded value on the line
1. 5 672 874 627
(nearest millions)
The rounded value of 5,672,874,627 is 5,673,000,000
What is a rounded value?
When a number is rounded, its value is kept relatively constant while being made easier. The outcome is simpler to use but less precise. Since 73 is closer to 70 than to 80, it is 70 when rounded to the nearest ten. But 76 increases to 80.
5,672,874,627
2 is in the million column
5,672,874,627
The nearest million could be 5,672,000,000 or 5,673,000,000.
To round to the nearest million, look at the digit in the column to the right, the hundred thousands.
5,672,874,627
The number in the hundred thousands column is 8.
The rule is, if the number is 5 or more, round up
5,673,000,000
Therefore, the rounded value of 5,672,874,627 is 5,673,000,000
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Which number is less than 2.167 × 10?
A. 9,978
B. 1.1 x 10
C. 56,344,000
D. 2.468 × 10
Answer:
A, B, C
Step-by-step explanation:
2. Consider divided by . (a) Write a real-world problem for the division. (b) Create a model or write an equation for the division. (c) Find the quotient for the real-world problem in part (a). Show your work or explain your reasoning.
2(1/2)/0.25=x and 10 is the quotient for the real-world problem in part.
What is Division?Division is splitting a group into equal parts and it is one of the four basic math operations.
The real-world problem for the division is
2(1/2)÷)0.25=x
Wth 2.5 L of water. you can drink 0.25L litres in one mouthful.How many mouthfuls do you need to drink.
the quotient for the real-world problem in part is
2.5/0.25
=10
10 is the quotient for the real-world problem in part.
Therefore 10 is the quotient for the real-world problem in part.
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57x23=?
What is the explanations
Answer:1311
Step-by-step explanation:
2 digit long multiplication.
__________________________________________
Long multiplication can seem very intimidating, especially if you're multiplying two numbers that are pretty large. If you take it step by step, though, you'll be able to do long multiplication in no time.
First, muiltiply the 3 by 5 and 7, and muiltiply the 2 by 5 and 7 as well.
[tex]\frac{\begin{matrix}\:\:&\:\:&5&7\\ \:\:&\times \:&2&3\end{matrix}}{\begin{matrix}0&1&7&1\\ 1&1&4&0\end{matrix}}[/tex]
(NOTE: Remember when you muiltiply two digit numbers, when you pass from the first digit to the other on the bottom side, you ALWAYS add a zero to the beginning of the result BEFORE multiplying the following digit)
Secondly, once you've multiplied, you add both results of the multiplication.
[tex]\frac{\begin{matrix}\:\:&\textbf{\:\:}&1&\:\:&\:\:\\ \:\:&\textbf{0}&1&7&1\\ +&\textbf{1}&1&4&0\end{matrix}}{\begin{matrix}\:\:&\textbf{1}&3&1&1\end{matrix}}[/tex]
[tex]=1311[/tex] <- This is your final answer.
___________________________________________
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Find the product of 3.2 x 1012 and 4.25 x 109. write the final answer in scientific notation. 1.36 x 1021 13.6 x 1021 1.36 x 1022 13.6 x 1022
The product of two given numbers in terms of scientific notations is 1.36 × 10^(22).
What are scientific notations?
Scientific notations are a way of representing either a very small or a very large number in the powers of 10. Scientific notations comprise digits from 1 to 9 with powers of 10.
Calculation of the product of two numbers
Given two numbers are 3.2 × 10^(12) and 4.25 × 10^(9)
Multiplying two numbers, we get
= 3.2 × 10^(12) × 4.25 × 10^(9)
= 13.6 × 10^(21)
= 1.36 × 10^(22)
Hence, the product of two numbers in terms of scientific notations is 1.36 × 10^(22).
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2. Which graph represents the solution
of 6 + 3y < 9 or 4y > 3y + 2?
Help please!!!!!
Answer: B.
Step-by-step explanation:
First, we will solve both of these given inequalities for x by isolating the variables.
Given:
6 + 3y < 9
Subtract 6 from both sides of the equation:
3y < 3
Divide both sides of the equation by 3:
y < 1
--
Given:
4y > 3y + 2
Subtract 3y from both sides of the equation:
y > 2
Now, our given inequalities are y < 1 and y > 2. These inequalities are easier to view on the graph. We see that these are not equal to (≥ or ≤), so we will have open circles.
First, we will graph y < 1. We will plot an open circle at y = 1 and then shade to the left of it. Net, we will graph y > 2. We will plot an open circle at y = 2 and then shade to the right of it. This leaves us with answer option B.
A solution consisting of 90 mg of dopamine in 20 mL of solution is administered at a rate of 8 ml/hr.
A solution of 150 h is administered at a rate of 8 ml / hr.
We express the answer in terms of mg/hr m g / h r
90 mg dopamine / 20 ml = 4.5 mg/ml
4.5 mg/ml * 8 ml/h = 36 mg/h
90 mg * 1 h / 36 mg= 150 h to administer -- using the inverse of 90 mg per 1 hour and cancelling mg in numerator and ml denominator.
Hence, 150 h is administered at a rate of 8 ml / hr.
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6 time the complement of an
angle is 44° less than 2 times its supplement. Find all angles
The value are-
original angle = 34°complement angle = 56°supplement angle = 146°What are defined as the complement and supplement angle?If a sum of two angles is 180 degrees, they are referred to as supplementary angles because they form a linear angle when combined. If a sum of two angles is 90 degrees, they are termed to be complementary angles because they form a right angle when combined.Now, for the given question.
Let the given angle be 'x'.
Then, the complement of the angle will be: 90 - x.
6 times the complement = 6(90 - x)
6 times the complement is 44 less; 6(90 - x) - 44.
Now, the supplement of the angle is; 180 - x.
Two time the supplement = 2(180 - x)
The equation will form as;
2(180 - x) = 6(90 - x) - 44
360 - 2x = 540 - 360 - 44
Simplifying the equation;
x = 34.
Thus, the original angle is 34°.
complement angle = 90 - x
= 90 - 34
= 56°
Thus, complement angle = 56°
supplement angle = 180 - x
= 180 - 34
= 146
supplement angle = 146°
Thus, the values of the angles are obtained.
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Find the solution to the differential equation dzdt=7te7z that passes through the origin.
The answer is [tex]z &=-0.14\left[\ln \left(1-24.5 t^2\right)\right]\end{aligned}$$[/tex]
What do you understand by differential equation?
An ordinary derivative or a partial derivative can both be found in a differential equation. The differential equation describes the relationship between the variable that is constantly varying with respect to the change in another quantity, and the derivative represents a rate of change.
Equations with General Differential. Consider the differential equation y′=3x2, which has a derivative and is an illustration of a differential equation. The variables x and y are related because y is an unidentified function of x. The derivative of y is also on the equation's left-hand side.
Given equation:
[tex]$$\begin{aligned}&e^{-7 z} d z=7 t d t \\&:(-1 / 7) e^{-7 z}=3.5 t^2+C\end{aligned}$$[/tex]
[tex]$C=-1 / 7$[/tex]
[tex]$$(-1 / 7) e^{-7 z}=3.5 t^2-1 / 7$$[/tex]
[tex]$$e^{-7 z}=1-24.5 t^2$$[/tex]
[tex]$$\begin{aligned}-7 z &=\ln \left(1-24.5 t^2\right) \\z &=-0.14\left[\ln \left(1-24.5 t^2\right)\right]\end{aligned}$$[/tex]
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data was collected for 300 fish from the north atlantic. the length of the fish (in mm) is summarized in the fdt below.
The upper-class limit for the sixth class is 179.
What is the upper-class limit?A class's upper-class limit is the largest value that can appear in that class. The difference between consecutive lower class limits is the class width. Subtract one from the lower limit of the second class to find the upper limit of the first class. Then, to find the remaining upper limits, continue to add the class width to this upper limit. Subtract 0.5 units from the lower limits and add 0.5 units to the upper limits to find the boundaries.So,
To find upper-class limit 6tj class. Subtract 1 from the lower-class limit of the 7th class.180 - 1 = 179Therefore, the upper-class limit for the sixth class is 179.
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The correct question is given below:
Data was collected for 300 fish from the North Atlantic. The length of the fish (in mm) is summarized in the GFDT below.
Lengths (mm) Frequency
120 - 129 1
130 - 139 16
140 - 149 71
150 - 159 108
160 - 169 83
170 - 179 18
180 - 189 3
What is the upper-class limit for the sixth class?
50pts to whoever can solve this correctly
The expression for M from the given function is M = 4π²a²/T²G
Subject of formulaThe subject of a formula is the variable that is being worked out from a given equation.
Given the equation below;
T² = 4π²a²/GM
We are to make M the subject of the formula
T²GM = 4π²a²
Divide both sides by T²G
T²GM/T²G = 4π²a²/T²G
M = 4π²a²/T²G
Hence the expression for M from the given function is M = 4π²a²/T²G
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Guys i need help making this quadratic equation into a standard form HELP ME PLEASE, ^2 means Like 2 Square.
1.) 11x^2 - 98 = 11 + 9x
2.) (2x - 1)^2 = (x + 4) ^2
3.) 4x^2 + 2x - 9 = (x - 2)(x - 9)
4.) 0 = 6 (x + 7)^2 - 58
5.) - 1/2 ( x - 1/4 )^2 + 12 = 0
Answer:
1) 1x² - 9x - 109 = 0
2) 3x² -12x -15 = 0
3) 3x² + 13x - 27 = 0
4) 6x² + 84x + 236 = 0
5) -16x² + 8x + 383 = 0
Step-by-step explanation:
The standard form of the quadratic equation is ax² + bx + c where a, b and c are constants.
So we have to convert each of the equations into a form that resembles the above
(1) 11x² -98 = 11 + 9x
Simplify both sides of the equation.(2) (2x - 1)² = (x + 4) ²
Simplify both sides of the equation(3) 4x² + 2x − 9 = (x − 2)(x − 9)
Simplify (x−2)(x−9)(4) 0 = 6(x +7 )² - 58
Switch sides:(5) -1/2 ( x - 1/4 )² + 12 = 0
Calculate [tex]-\dfrac{1}{2} (x - \dfrac{1}{4})^2 = -\dfrac{1}{2} (x^2 - 2\(\dfrac{1}{4}x + \dfrac{1}{16})[/tex]John goes to the bank to get a $15,000 loan.The loan has a simple interest rate of 6% and is 4 years long.What is the TOTAL amount John has to pay?
The total amount John has to pay in repaying the loan and interest is $18,600
What makes up the total amount John has to pay?
The total amount that John has to pay comprises of the loan principal of $15,000 and the interest on the loan which is computed at the simple interest rate of 6% for the loan duration of 4 years
I=PRT
I=interest for 4 years=unknown
P=loan principal=$15,000
R=interest rate=6%
T=number of years of loan=4
I=$15,000*6%*4
I=$3,600
A=P+I
A=$15,000+$3,600
A=$18,600
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-3(x+5)=-(3x+15) solve for x
Step-by-step explanation:
Simplifying
-3(x + 5) = -1(3x + 15)
Reorder the terms:
-3(5 + x) = -1(3x + 15)
(5 * -3 + x * -3) = -1(3x + 15)
(-15 + -3x) = -1(3x + 15)
Reorder the terms:
-15 + -3x = -1(15 + 3x)
-15 + -3x = (15 * -1 + 3x * -1)
-15 + -3x = (-15 + -3x)
Add '15' to each side of the equation.
-15 + 15 + -3x = -15 + 15 + -3x
Combine like terms: -15 + 15 = 0
0 + -3x = -15 + 15 + -3x
-3x = -15 + 15 + -3x
Combine like terms: -15 + 15 = 0
-3x = 0 + -3x
-3x = -3x
Add '3x' to each side of the equation.
-3x + 3x = -3x + 3x
Combine like terms: -3x + 3x = 0
0 = -3x + 3x
Combine like terms: -3x + 3x = 0
0 = 0
Solving
0 = 0
Couldn't find a variable to solve for.
This equation is an identity, all real numbers are solutions.
Answer:
Step-by-step explanation:
-3(x+5) = -(3x+15)
-3x - 15 = -3x - 15
the 2 sides are identical so there are
INFINITE solutions.
236 + 85 pls help so hard
Answer:
Step-by-step explanation:Its 321
A group of friends wants to go to the amusement park. they have $327.75 to spend on parking and admission. parking is $13.75, and tickets cost $39.25 per person, including tax. how many people can go to the amusement park?
The total number of people who can go to the amusement park in the given scenario is 6. This problem is based on the basic mathematical formulae.
Formulae are mathematical statements comprising expressions, numbers, and variables to ease complex calculations.
Given that
The total amount for the expenditure = [tex]\[/tex]327.75.
Cost of parking per person = [tex]\[/tex]13.75,
Cost of tickets per person = [tex]\[/tex]39.25.
Total cost per person = Cost of parking per person + Cost of tickets per person
Total cost per person = [tex]\[/tex]13.75 + [tex]\[/tex]39.25
= [tex]\[/tex]53
So,
Number of persons = [tex]\frac{The total amount for the expenditure}{Total cost per person }[/tex]
= [tex]\frac{327.75}{53}[/tex] = 6.18.
So, 6 people can go to the amusement park.
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1. Which of the drawings described below would create a line of reflection that takes the point A to point B?
a.
Draw the perpendicular bisector of segment AB.
b. Draw a line through B perpendicular to segment AB.
c. Draw the line passing through A and B.
d. Draw a line parallel to line AB.
The drawing that creates a line of reflection that takes the point A to point B is; D: Draw a line parallel to line AB.
How to create a line of reflection
A line of reflection is a line that lies in a position between two identical mirror images so that any point on one image is the same distance from the line as the same point on the other flipped image.
Let us look at the given options;
A) Draw the perpendicular bisector of segment AB; A perpendicular bisector will NOT create a line of reflection that takes point A to point B but rather it will divide the line AB in two equal parts
B) Draw a line through B perpendicular to segment AB; A line through B perpendicular to segment AB will NOT Create a line of reflection that takes point A to point B
C) Draw the line passing through A and B;
A line passing through A and B will NOT create a line of reflection that takes point A to point B but rather will create Line A and B again and not its reflection
D) Draw a line parallel to line AB;
A line parallel to line AB will create a line of reflection that takes point A to point B because a parallel line never meet thereby creating the direct imagery of Line AB.
Thus, the drawing that create a line of reflection that takes the point A to point B is; D: Draw a line parallel to line AB.
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Logic puzzle help solve pleaseeeeeeeee
Answer:
Many challenging questions do not involve numerical or geometrical considerations but call for deductive inferences based chiefly on logical relationships. Such puzzles are not to be confounded with riddles, which frequently rely upon deliberately misleading or ambiguous statements, a play on words, or some other device intended to catch the unwary. Logical puzzles do not admit of a standard procedure or generalized pattern for their solution and are usually solved by some trial-and-error method. This is not to say that the guessing is haphazard; on the contrary, the given facts (generally minimal) suggest several hypotheses. These can be successively rejected if found inconsistent, until, by substitution and elimination, the solution is finally reached. The use of various techniques of logic may sometimes prove helpful, but in the last analysis, success depends largely upon that elusive capacity called ingenuity. For convenience, logic problems are arbitrarily grouped in the following categorie
Teresa ran a 20-mile marathon. Her average speed was 5 miles per hour. Approximately how long did it take her to finish the race?
Answer:4 hours
Step-by-step explanation:
You have to figure out what times 5 would equal 20.
5x=20
5(4)=20
because 5*4=20, the answer is 4
Harry tosses a nickel 4 times. The probability that he gets at least as many heads as tails is.
The probability that he gets at least as many heads as tails is half or 50%.
What is the formula for probability?Probability is obtained by dividing the number of chances that it will take to realize a result by the number of total possible chances. To get the right probability for the question asked here, we need to determine:
The number of chances is equal to 4.
The total number of possible chances is given by the equation:
4 × 2 = 8
Two is obtained by recognizing the fact that there are two sides to the coin. So, he could either get a head or a tail when he tosses the nickel.
Therefore;
4/8 = 1/2 or 50%
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Solve for x 2(4-3x)=20
Answer:
x = -2
Step-by-step explanation:
2(4 - 3x) = 20
8 - 6x = 20
-8 -8
-6x = 12
÷-6 -6
x = -2
I hope this helps!
On the following number line, what number would you plot at point B?
A number line from 4 to 5 partitioned into tenths. There is a red dot between 4 and 4.1 labeled A. There is a red dot between 4.3 and 4.4 labeled B. There is a red dot between 4.5 and 4.6 labeled C. There is a red dot between 4.7 and 4.8 labeled D
4.009
4.328
4.43
4.77
The number which corresponds to the point B is (option b) 4.328.
Given,
A number line 4 to 5 partitioned into tenths. ( image is attached below)
There are 4 red dots:
A - Between 4 and 4.1B - Between 4.3 and 4.4C - Between 4.5 and 4.6D - Between 4.7 and 4.8We have to plot the number corresponding to the point B.
Let's go through the options:
a) 4.009 : This would be between 4 and 4.1. That is, point A.
b) 4.328 : This would be between 4.3 and 4.4. That is, point B.
c) 4.43 : This would be between 4.4 and 4.5
d) 4.77 : This would be between 4.7 and 4.8. That is, point D.
So, the number which corresponds to the point B is (option b) 4.328.
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My Assuming Answer;
OPTION B;
4.328
Add-ons;
Hey again! Here's an answer to your question :) Thanks for giving that recipe. Have a nice day.
You can find the net force F on an object
by using the formula F = ma, where m is
the mass of the object in kilograms and
a is its acceleration in meters per second
squared. What is the mass of an object
that has a net force of 65 kg m/s² and an
acceleration of 5 m/s²?
Answer: m = 13 kg
Step-by-step explanation:
This question gives us the formula to use. We will plug-in the values we know and solve for the unknown (mass).
Given:
F = ma
Plug-in known values:
(65 kg m/s²) = m(5 m/s²)
Divide both sides of the equation by 5 m/s²:
The m/s² unit cancel out, so we are left with kg.
m = 13 kg
The mass of the object is 13 kg.
HELP ME pls it is important
Answer:
You would want have more stock and less savings
Step-by-step explanation:
2 2/3 divided by 3 2/3
Answer:
8/11
Step-by-step explanation:
[tex]2\frac{2}{3} = \frac{8}{3}\\3\frac{2}{3} = \frac{11}{3} \\= \frac{8}{3} \div \frac{11}{3}\\=\frac{8\times 3}{3 \times 11} = \frac{24}{33}\\\\LCM: 3\\\\\frac{24 \div 3}{33 \div 3}\\= \frac{8}{11}[/tex]
what is -3+5-11 ?? i need help
Answer:-9
Step-by-step explanation:
Eight times six divided by two minus nine numerical expressions
Answer:
15
Step-by-step explanation:
8 x 6 / 2 -9
48 / 2 - 9
24-9
15