WILL GIVE BRAINLIEST, THANKS, AND 5 STARS! PLEASE HELP EXPLAIN TO ME IN WORDS!
QUESTION IN SCREENSHOT!
Also: hows your day going, how are you feeling?
Answers
Answer:
So, we can check step by step.
2x^2-7x+5=0
So, 2x^2-2x-5x+5=0 is correct
2x(x-1)=2x^2-2x, 5(x-1)=-5x + 5= 0, that step is correct
(I'll skip the next step)
2x-5=0,
2x=5
x=5/2, NOT 2/5
The other one is correct
Sorry if this seems a bit vague!
[tex]\\ \rm\Rrightarrow 2x^2-7x+5=0[/tex]
Split the middle term[tex]\\ \rm\Rrightarrow 2x^2-2x-5x+5=0[/tex]
Take common[tex]\\ \rm\Rrightarrow 2x(x-1)-5(x-1)=0[/tex]
Factor up[tex]\\ \rm\Rrightarrow (2x-5)(x-1)=0[/tex]
Find x[tex]\\ \rm\Rrightarrow x=5/2,1[/tex]
Lauren written 2/5 instead of 5/2
Let's verify once more
2x-5=02x=5x=5/2Related Questions
A rocket carrying fireworks is launched from a hill 80 feet above a lake. The rocket will fall into the lake after exploding at its maximum height. The rocket's height above the surface of the lake is given by h=-16t^2+64t+80.
1. what is the maximum height reached by the rocket?
2. how long will it take for the rocket to hit 128 ft?
Answers
Answer:
1. 144
2. 1
Step-by-step explanation:
help :(
“two less than a number is less than or equal to thirty three”
- The inequality translated in numerical form
- The solution in set notation
- The solution in interval notation
Answers
Answer:
- The inequality translated in numerical form
Step-by-step explanation:
To find the probability of two
independent events, you
their
probabilities.
A) add
B) subtract
C) multiply D) divide
Answers
Answer:
To find a probability Multiply two independent events.
FOR 100 POINTS
The ratio of boys to girls in Janice’s classroom is 3:5, and there are a total of 32 students in the class. Using complete sentences, explain how you could draw a tape diagram to represent this situation. In your answer, make sure to include what quantity each bar represents.
Answers
Answer:
The answer is
→ 18:32
Step-by-step explanation:
The total number of students in the class is 32 students. 3 boys and 5 girls. But wait! Were not done yet.
Boys:
3 x 4 = 12
or
3 + 3 + 3 + 3 = 12
Girls:
4 + 4 + 4 + 4 + 4 = 20
or
4 x 5 = 20
20 + 12 = 32
Hope this helped! :^)
- ✨7272033Alt✨
Which term describes an idea or a feeling suggested by a word?
Answers
Answer: connotation
Step-by-step explanation: everything that a phrase or item implies: the comfort connotations that surrounded that old chair.
please help me...asap
Answers
So the answer would be the first one sample of 5)
A, B and C are points on the line 2x+y=8
DCE is a straight line.
AB:BC=2:1
EC:DC=1:2
Work out the ratio Area of triangle AEC : Area of triangle BCD
Give your answer in its simplest form.
Answers
The ratio of the area of triangle AEC and area of triangle BCD is 21:14 if the A, B and C are points on the line 2x+y=8
What is a linear equation?It is defined as the relation between two variables, if we plot the graph of the linear equation we will get a straight line.
If in the linear equation, one variable is present, then the equation is known as the linear equation in one variable.
We have line;
2x+y=8
x/4 + y/8 = 1
Coordinate for A(4, 0) and B(0, 8)
To find the coordinate C we will use external section formula:
Let (a, c) be a coordinate for C
AB : BC = 2:1
AC:BC = 3:1
[tex]\rm C(a, b) =( \dfrac{-4}{3-1}, \ \dfrac{24}{3-1})[/tex]
C(a, b) = (-2, 12)
Let coordinate for E(0, e) and for D(f, 0)
EC:DC=1:2 and C(-2, 12)
So after applying section formula, we will get:
E(0, -3) and D(0, 36)
Area of triangle AEC = (1/2)(7)(12) = 42 square units
Area of triangle BCD = (1/2)(28)(2) = 28 square units
ratio of area of triangle AEC : area of triangle BCD = 42:28
= 21:14
Thus, the ratio of the area of triangle AEC and area of triangle BCD is 21:14 if the A, B and C are points on the line 2x+y=8
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Find the measure of the three missing angles in the rhombus below.
Answers
Answer:
Angles x and y measure 115°. Angle Z measures 65°.
Step-by-step explanation:
Since a rhombus is a parallelogram, opposite angles are congruent, and consecutive angles are supplementary.
The measure of the angles x, y, and z will be 115°, 115°, and 65°, respectively.
What is an angle?The inclination is the separation seen between planes or vectors that meet. Degrees are another way to indicate the slope. For a full rotation, the angle is 360 °.
Supplementary angle - Two angles are said to be supplementary angles if their sum is 180 degrees.
The adjecent angle of the rhombus is supplementary. Then the value of 'x' is given as,
65° + ∠x = 180°
∠x = 180° - 65°
∠x = 115°
The opposite angle of the rhombus is congruent to each other.
∠y = ∠x
∠y = 115°
∠z = 65°
The measure of the angles x, y, and z will be 115°, 115°, and 65°, respectively.
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A shoebox has a volume of 64 in.³ and a surface area of 160 in.² what is the surface area of a similar shoe box if its volume is only 27 in.³ show your work or explain how you got your answer
Answers
Answer:
90 in²
shoebox:
volume = 64 in³surface area = 160 in²Another shoebox:
volume = 27 in³surface area = x in²====================
[tex]\sf (\dfrac{area1}{area2})^3 = (\dfrac{volume1}{volume2} )^2[/tex]
====================
[tex]\sf \hookrightarrow (\dfrac{x}{160})^3 = (\dfrac{27}{64} )^2[/tex]
[tex]\sf \hookrightarrow \dfrac{x^3}{160^3} = \dfrac{27^2}{64^2}[/tex]
[tex]\sf \hookrightarrow \ x^3 = \dfrac{729*4096000}{4096}[/tex]
[tex]\sf \hookrightarrow \ x^3 = 729000[/tex]
[tex]\sf \hookrightarrow \ x = \sqrt[3]{729000}[/tex]
[tex]\sf \hookrightarrow \ x = 90[/tex]
Each student in Mr. Johnson's sixth-grade class kept track of how many books they read over
summer vacation.
Books read
0
2
4.
6
8
10
What was the median number of books Mr. Johnson's students read?
Answers
Answer-5
Answer:
4
Step-by-step explanation:
I got 4 when I answered on IXL for anyone who needs help on it!
(-9-11)/(-4)divided by -7^2+(11 times 2^2)
Answers
Just to make sure the equation is set up as a fraction right?
The lateral area of a cone is 9.81 in. The radius is 1.4 in. Find the slant height.
Answers
Answer:
As Per Provided Information
Lateral area of cone is 9.81 in Radius of cone is 1.4 inWe have been asked to determine the slant height of the cone .
Formula used to calculate the lateral area of a cone is
[tex] \boxed{\bf \: \purple{ Lateral \: Area _{(Cone)} \: = \pi\:rl}}[/tex]
here
l denote slant height
r denote radius
Substituting the value we obtain
[tex] \longrightarrow\tt \: 9.81 = 3.14 \times 1.4 \times l \\ \\ \\ \longrightarrow\tt \:9.81 = 4.396 \times l \\ \\ \\ \longrightarrow\tt \: \cfrac{9.81}{4.396} = l \\ \\ \\ \longrightarrow\tt \: \: l \: = \cfrac{9.81}{4.396} \\ \\ \\ \longrightarrow\tt \: \: l \: = \cancel\cfrac{9.81}{4.396} \\ \\ \\ \longrightarrow\tt \: \: l \: = 2.23 \:inch \: \: (approx)[/tex]
Therefore,
Slant height of the cone is 2.23 in .can someonhelp me with this I'm stuck please help I will give brainlyest
Answers
Answer:
Table 1:
2 miles = 3520 yards
3 miles = 5280 yards
Table 2:
2 yards = 6 feet
3 yards = 9 feet
Table 3:
2 feet = 24 inches
3 feet = 36 inches
Table 4:
2 yards = 72 inches
Question 5: 4 yards, 130 inches, 10 feet
Question 6: The width of a penny
Step-by-step explanation:
Table 1: Multiply 1760 by 2 (3520), and 3 (5280).
Table 2: Multiply 3 by 2 (6), and 3 (9).
Table 3: Multiply 12 by 2 (24), and 3 (36).
Table 4: Multiply 36 by 2 (72).
Question 5: Convert all measurements to inches (the smallest value).
130 (given)
4 yards = 144 inches
10 feet = 120 inches
In greatest to least, we get 144, 130, 120.
Question 6: The length of a dollar is much wider than 1 inch, and so is a pencil. The width of a penny makes the most sense.
hope this helps!
E represents an object's weight on earth and m represents that same object's weight on the moon. the equation m = 1/6 e represents the relationship between these quantities. a. what does the 1/6 represent in this situation? b. give an example of what a person might weigh on earth and on the moon.
Answers
In the equation, 1/6 represents the constant of proportionality.
If a person weighs 60 kg on earth, the person would weigh 10kg ont he moon.
What is inverse proportion?
The equation that represents inverse proportion is: m = ke
Where:
m = dependent variable k = constant of proportionalitye = independent variableIf k is 1/6 and e is 60kg,
m = 1/6 x 60 = 10kg
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Help! I need help asap, I will give brainliest
Answers
Answer:
15.733in^2
Step-by-step explanation:
For this triangle it would be area=0.5 * b * h * sin(y)
(y) being the angle
(b) being base
(h) being height
Hope this helps and I am pretty sure this is right.
Answer:
is 24
Step-by-step explanation:
because is multiply for 22
Given: x1 = 6, x2 = 2.5, y1 = 2.4. Find y2 if the points are (a) directly proportional or
(b) inversely proportional
Answers
a) The value of y₂ is 1 for the direct proportionality case.
b) The value of y₂ is 5.76 for the inverse proportionality case.
How to predict a value by apply proportionality model
Proportionality represents a family of relationships between two variables, which can be linear and nonlinear. Direct proportionality represents a linear relationship, whereas inverse proportionality represents a kind of nonlinear relationship.
Here are two mathematical representations of the relationships described above:
Direct proportionality[tex]y \propto x[/tex]
[tex]\frac{y_{2}}{y_{1}} = \frac{x_{2}}{x_{1}}[/tex] (1)
Inverse proportionality[tex]y \propto \frac{1}{x}[/tex]
[tex]\frac{y_{2}}{y_{1}} = \frac{x_{1}}{x_{2}}[/tex] (2)
If we know that x₁ = 6, x₂ = 2.5, y₁ = 2.4, then the value of y₂ for each case are, respectively:
Direct proportionalityy₂ = 2.4 × (2.5/6)
y₂ = 1
Inverse proportionalityy₂ = 2.4 × (6/2.5)
y₂ = 5.76
To learn more on proportions, we kindly invite to check this verified question: https://brainly.com/question/2548537
Help me find Fred's mistakes. I need to know which step Fred messed up on. Answer choices...
A. Fred made a mistake in step 1
B. Fred made a mistake in step 2
C. Fred made a mistake in step 3
D. Fred didn't make a mistake
Answers
Answer:
C. Step 3
Step-by-step explanation:
Fred lost the negative sign, but everything else was right. He should have gotten -9.
100 points.
In a coordinate plane a figure can be reflected by a line other than the x- or y - axis.
Identify the linear equation for the reflection of Object E and E'?
Answers
Answer:
When you reflect a point across the y-axis, the y-coordinate remains the same, but the x-coordinate is transformed into its opposite (its sign is changed).
Step-by-step explanation:
hope this helps if does mark brainllest
After heating up in a teapot, a cup of hot water is poured at a temperature of
20
8
∘
208
∘
F. The cup sits to cool in a room at a temperature of
6
8
∘
68
∘
F. Newton's Law of Cooling explains that the temperature of the cup of water will decrease proportionally to the difference between the temperature of the water and the temperature of the room, as given by the formula below:
T
=
T
a
+
(
T
0
−
T
a
)
e
−
k
t
T=T
a
+(T
0
−T
a
)e
−kt
T
a
=
T
a
= the temperature surrounding the object
T
0
=
T
0
= the initial temperature of the object
t
=
t= the time in minutes
T
=
T= the temperature of the object after
t
t minutes
k
=
k= decay constant
The cup of water reaches the temperature of
18
5
∘
185
∘
F after 3 minutes. Using this information, find the value of
k
k, to the nearest thousandth. Use the resulting equation to determine the Fahrenheit temperature of the cup of water, to the nearest degree, after 4 minutes.
Enter only the final temperature into the input box.
Answers
Answer:
k ≈ 0.060T(4) ≈ 178 °FStep-by-step explanation:
The desired formula parameters for Newton's Law of Cooling can be found from the given data. Then the completed formula can be used to find the temperature at the specified time.
__
Given:[tex]T(t)=T_a+(T_0-T_a)e^{-kt}\\\\T_a=68,\ T_0=208,\ (t,T)=(3,185)[/tex]
Find:k
T(4)
Solution:Filling in the given numbers, we have ...
185 = 68 +(208 -68)e^(-k·3)
117/140 = e^(-3k) . . . . . subtract 68, divide by 140
ln(117/140) = -3k . . . . . . take natural logarithms
k = ln(117/140)/-3 ≈ 0.060
__
The temperature after 4 minutes is about ...
T(4) = 68 +140e^(-0.060·4) ≈ 68 +140·0.787186
T(4) ≈ 178.205
After 4 minutes, the final temperature is about 178 °F.
Find the slope of the line that passes through the following points. (-3,0) (3, 2)
Answers
Answer:
slope: 1/3
Explanation:
[tex]\sf \boxed{\sf slope: \sf \frac{y_2-y_1}{x_2-x_1} }[/tex] where (x1, y1), (x2, y2)
Solve for slope:
insert values
[tex]\rightarrow \sf \dfrac{2-0}{3-(-3)}[/tex]
remove brackets
[tex]\rightarrow \sf \dfrac{2}{3+3}[/tex]
simplify
[tex]\rightarrow \sf \dfrac{2}{6}[/tex]
final answer
[tex]\rightarrow \sf \dfrac{1}{3}[/tex]
Answer:
the slope of the line passing through (-3,0) (3,2) is 1/3
Step-by-step explanation:
Slope is equal to the change in y over the change in x, or rise over run. m=change in y/change in x. The change in x is equal to the difference in x-coordinates (also called run), and the change in y is equal to the difference in y-coordinates (also called rise). m=y2-y1/x2-x1. Substitute in the values of x and y into the equation to find the slope. m=2−(0)3−(−3)m=2-(0)3-(-3) Simplify. m=13
if x varies directly with y and x=-19 when y=14 what is x when y=2
Answers
The variation from x to y is an illustration of a direct variation
The value of x when y = 2 is -19/7
How to determine the value of x?The variation is a direct variation.
So, we have:
x = ky
Where k represents the constant of variation
Make k the subject
k = x/y
This gives
x1/y1 = x2/y2
So, we have:
-19/14 = x/2
Multiply both sides by 2
x = -19/14 * 2
Evaluate
x = -19/7
Hence, the value of x when y = 2 is -19/7
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Zey can buy socks online for $3.50 a pair plus a $6 shipping charge. A local store
sells socks for $5 a pair.
The graph represents the total cost depending on the number of pairs of socks
purchased
Choose the two statements that are true about the graph
Answers
In this situation, it is true buying three pairs of socks costs less at the store and buying fout pairs costs the same online and in the store.
How much does it cost to buy three pairs?Store: $5 x 3 = $15
Online: $3.50 x 3 = $10.5 + $6 = $16.5
This shows buying three pairs cost less at the store, which makes the first statement correct.
How much does it cost to buy 4 pairs?Store: $5 x 4 = $20
Online: $.3.50 x 4 = $14 + $6 = $20
This shows buying four pairs is the same in the store or online.
Learn more about cost in: https://brainly.com/question/15135554
_7_ × _ = 744
fill in the blank using the digits from 0 to 9
Answers
Step-by-step explanation:
372×2
Hence fill In this order
3 2 2
10^3 I need some help can someone help please.
Answers
A number raised to an exponent is the number multiplied by itself the number of the exponent:
10^3 = 10 x 10 x 10 = 1,000
Help!
just pick the right option thanks
Answers
Answer:
A:)
Step-by-step explanation:
l and lll
Two numbers have a product of -36
They have a sum of -5
What are the two numbers?
Answers
Answer:
-9,4
Step-by-step explanation:
I need this answered real quick
Answers
Answer:
11x+60° =93
11x =93-60
x=33/11
x=3
z+93 = 180 (being angles in st. line)
z=180-93
z= 87
Answer:
x=3
z=87
Step-by-step explanation:
Using the vertical angles rule, we can set 11x+60=93, solve for x:
[tex]11x+60=93\\11x=33\\x=3[/tex]
Since two angles on a line add up to 180, we can find z by setting 180=z+93, solve for z:
[tex]180=93+z\\87=z[/tex]
What is the slope of the line shown in the graph?
(-2,2)
2
(0,1)
0-2
Answers
Answer:
= -0.5
Step-by-step explanation:
Slope:
(y2-y1/x2-x1)
Plug in:
(0,1), (-2,2)
2-1/-2-0
-1/2
= -0.5
Find the number that makes the ratio equivalent to 5:6.
:66
Answers
Answer:
55 - you multiplied 6 by 11 to get 66 so you multiply by 5 by 11 to get 55.
The circumference of a circle is 31.4 metres. What is the circle's diameter?
Answers
Answer:
9.99m
Step-by-step explanation:
d≈9.99m
C Circumference
31.4m
Using the formulas
C=2πr
d=2r
Solving ford
d=C
π=31.4
π≈9.99493m