Pls pls helpp due today!
The perpendicular linear equation that passes through (8, 2) is:
y = x - 6
How to find the perpendicular line?A general linear equation is of the form:
y = m*x + b
Where m is the slope.
Two lines are perpendicular only if the product between the slopes is equal to -1.
Here we start with the line:
y = -x
So the slope is -1.
Then the slope of the perpendicular line m must be:
-1*m = -1
m = -1/-1 = 1
Then the perpendicular line is something like:
y = x + b
And we want this to pass through (8, 2), replacing these values we get:
2 = 8 + b
2 - 8 = b
-6 =b
The linear equation is:
y = x - 6
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Find the equation of a line that passes through (3,-1) and is perpendicular to the equation 3x+y=2
Answer:
y = (1/3)x - 2
Explanation:
First, we need to identify the slope of the equation 3x + y = 2, so we need to solve for x as:
[tex]\begin{gathered} 3x+y=2 \\ y=2-3x \end{gathered}[/tex]Now, the number beside the variable x is the slope, so the slope is -3
Then, two lines are perpendicular if the product of both slopes is equal to -1. It means that the slope m for our equation should be:
[tex]\begin{gathered} -3\cdot m=-1 \\ m=\frac{-1}{-3}=\frac{1}{3} \end{gathered}[/tex]Now, we can find the equation of the line using the following:
[tex]y=m(x-x_1)+y_1[/tex]Where m is the slope and (x1, y1) is a point on the line. So, replacing my 1/3 and (x1, y1) by (3, -1), we get:
[tex]\begin{gathered} y=\frac{1}{3}(x-3)+(-1) \\ y=\frac{1}{3}x-\frac{1}{3}\cdot3-1 \\ y=\frac{1}{3}x-1-1 \\ y=\frac{1}{3}x-2 \end{gathered}[/tex]Therefore, the equation of the line is: y = (1/3)x - 2
What is the volume of a triangular pyramid that is 10 in. tall and has a base area of 9 square in?
The volume of a triangular pyramid that is 10 in. tall and has a base area of 9 square inches is 30 cubic inches.
Volume of a triangular pyramidTetrahedrons are polyhedra made up of four triangular faces, six straight edges, and four vertex corners. They are also referred to as triangular pyramids.
The given shape is known as a triangular pyramid and the formula for calculating its volume is expressed as:
V = BH/3
where
B is the base area
H is the height of the prism
Determine the base area
B = 1/2 * base * height
B = 9 square inches
H = 10 inches
Substitute the given parameters into the formula
V = 9*10/3
V = 3*10
V = 30 cubic inches
This given the required volume of the prism
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Which postulate proves the two triangles congruent?
A. SSS
B. SAS
C. ASA
D. AAS
Answer:
A. SSS
Step-by-step explanation:
Triangle ADT and triangle TDE are congruent triangles by SSS postulate.
Sides DE and DA, sides TE and TA are congruent (DT is common side).
So the answer is A. SSS
select all the angles that are congruent to <6
The angles that are congruent to angle 6 in the given diagram are:
∠2, ∠3, and ∠5.
What are Congruent Angles?Interior angles that lie opposite to each other along a transversal that cut across the parallel lines they are found on are said to be congruent angles based on the alternate interior angles theorem.
Also, vertical angles have angle measure that are the same, that is, they are congruent as well, so also are corresponding angles.
In the image given, angles 3 and 6 are alternate interior angles. Therefore, they are congruent.
∠5 is congruent to ∠6 because they are vertical angles.
∠2 is congruent to ∠6 because they are corresponding angles.
The angles that are congruent to angle 6 are: angles 3, 5, and 2.
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24PS-10 Question Help In a certain chemical, the ratio of zinc to copper is 3 to 14. A jar of the chemical contains 294 grams of copper. How many grams of zinc does it contain?
the ratio of zinc to copper is 3 to 14, that menas that for each 3 grams of zinc there are 14 grams of copper, so we can made a rule of three to find
May someone please help me?
Answer: [tex]x=-\frac{1}{2}, y=\frac{9}{2}[/tex]
Step-by-step explanation:
[tex]5x+7=7x+8\\\\2x=-1\\\\x=-\frac{1}{2}\\\\\implies y=5\left(-\frac{1}{2} \right)+7=\frac{9}{2}[/tex]
Answer:
y = 5x + 7 ---1
y = 7x + 8 ---2
Substitute either one of the equations into the other.
I will substitute 1 into 2.
5x + 7 = 7x + 8
Simplify and solve for x.
2x = -1
x = -1/2
Substitute x into either one of the equations to find y.
I will substitute x into 1.
y = 5(-1/2) + 7
= 9/2
Hence, x = -1/2, y = 9/2
PLEASE HELP ASAP!!!!!!!!!!!!! WITH STEPS PLEASEEEEEE!!!!!!!!!!!!!
Given f(x) = x2 + 4x − 1, describe the new function g(x) = f(x + 4)
If function f(x) = [tex]x^2[/tex] + 4x -1, then the value of g(x)= f(x+4) = [tex]x^2[/tex] + 12x +31
The function is
f(x) = [tex]x^2[/tex] + 4x -1
The function is the expression that represents the relationship between one variable and another variable. If one variable is dependent variable then the another variable is independent variable.
The value of g(x) = f(x+4)
First we have to find the value of f(x+4)
Substitute the values in the function
f(x) = [tex]x^2[/tex] + 4x -1
f(x+4) = [tex](x+4)^2[/tex] + 4(x+4) - 1
= [tex]x^2[/tex] + 8x +16 + 4x+16 - 1
Rearrange the terms and combine the like terms
= [tex]x^2[/tex] + 8x+4x + 16+16-1
= [tex]x^2[/tex] + 12x +31
Hence, if function f(x) = [tex]x^2[/tex] + 4x -1, then the value of g(x)= f(x+4) = [tex]x^2[/tex] + 12x +31
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Jason compares the price of x pizzas which all have a one-time delivery fee. This question has two parts.
18.30x +3.75
19.35x + 5.00
13.25x +3.99
What is the cheapest pizza without a delivery fee?
What is the cheapest delivery fee?
The cheapest pizza without a delivery fee is 13.25 × and the cheapest delivery fee is $3.75.
What is the cheapest delivery fee?Delivery fees are used to defray the cost of transporting food to customers. We'll discuss the various ways that restaurants might approach this revenue channel and how these fees are calculated based on how a restaurant runs its delivery service.A price assessed by the delivery business as compensation for the service.
Taxes: Your order will be subject to the applicable state and local sales taxes. The cost of having food delivered is known as the delivery fee.The cheapest pizza without a delivery fee is 13.25 × and the cheapest delivery fee is $3.75.Therefore, the cheapest pizza without a delivery fee is 13.25 × and the cheapest delivery fee is $3.75.
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Question Progress
Homework Progress
7/21 Marks
Solve the equation
3x-2
4
-
2x-5
3
=
1+x
6
Answer: x= 1.20833
The way it was written was a little confusing but hope this helps, This may be wrong just re write it for me and it should be correct next time.
Step-by-step explanation:
Step 1: Make parentheses
( 3x - 2 ) 4 ( -2x - 5 ) 3 = ( 1 + x ) 6
Step 2: Solve parentheses ( Multiplication and division first )
(4 * 3x = 12x) - (4 * 2 = 8) -> 12x - 8
(-2x * 3 = -6x) - (3 * 5 = 15) -> -6x - 15
(6 * 1 = 6) + (6 * x = 6x) -> 6 + 6x
New and improved equation:
-12x - 8 - 6x - 15 = 6 + 6x
Step 3: add like terms
-12x - 6x = -18x
-8 - 15 = -23 so...
-18x - 23 = 6 + 6x
Step 4: solve it
-18x - 23 = 6 + 6x
+ 23
-18x = 29 + 6x
-6x
-24x = 29
x= 1.20833
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It took Brian 3 hours to drive to a rock concert. On the way home, he was able to increase his average speed by 23 mph and make the return drive in only 2 hours. Find his average speed on the return drive.The equation from part 2 is 3x=2(x+23)Step 3 of 3: Solve the equation found in part 2 for x. Use this information to answer the given word problem.
Answer:
69 mph
Explanation:
The equation that represents this situation is:
[tex]3x=2(x+23)[/tex]We are required to determine Brian's average speed on the return drive.
To do this, we first find the value of x.
[tex]\begin{gathered} \text{Open the bracket} \\ 3x=2x+46 \\ \text{Subtract 2x from both sides} \\ 3x-2x=46 \\ x=46\; \text{mph} \end{gathered}[/tex]Using the value of x, we find the average speed on the return drive.
[tex]x+23=46+23=69\text{mph}[/tex]Therefore, the average speed on the return drive will be 69 mph.
what is the slope for 5/3 x-4
Answer:
The slope is 5/3
Step-by-step explanation:
y = 5/3x - 4
The equation is in slope intercept form
y = mx+b where m is the slope and b is the y intercept
The slope is 5/3 and the y intercept is -4
if A=D and C =F which additional statement does not allow you to conclude that ABC=DEF?1. AC=DF2.B=E3.BC=EF4.AB=DE
Given that 2 of the angles are congruent, we can conclude that the others angles are congruent too, because the sum of inner angles of a triangle is equal to 180. So the additional information we need is
[tex]\angle B\cong\angle E[/tex]And having that we could use AAA criteria. Also we could need AC = DF and use ASA criteria.
PLEASE HELP ASAPPPPP!!!!!!!!!!!!!
The quadratic function f(x) has roots of −2 and 6, and it passes through the point (1, 15). What is the vertex form of the equation of f(x)?
f(x) = (x − 2)2 + 16
f(x) = (x + 2)2 + 16
f(x) = −(x − 2)2 + 16
f(x) = −(x + 2)2 + 16
Answer:
f(x) = −(x − 2)^2 + 16
Step-by-step explanation:
See attached graph.
the interest rate on a five-year certificate of deposit (cd) for banks in south florida in 2018 was normally distributed with a mean of 2.28 percent and a standard deviation of 0.37 percent. if a bank has an interest rate at the 45th percentile, what is the interest rate at this bank?
The interest rate at the bank = 2.324 %
Let X be the random variable representing the interest rate on a five-year certificate of deposit (cd) for banks in South Florida in 2018.
Then X follows the Normal Distribution with,
Mean, μ = 2.28 % and,
Standard Deviation, σ = 0.37 %
We need to find the X at the 45th percentile.
45th percentile implies z-value = 0.45
The z-score at 45th percentile or 0.45 probability = -0.12 [From the z-tables]
We have, z = (x-μ)/σ
⇒ zσ = x-μ
⇒ x = zσ+μ
⇒ x = (0.12 x 0.37) + 2.28
= 2.324
Hence the interest rate at the bank = 2.324 %
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You are going to drive to another state for a vacation. One route will take 8 hours to drive 400 miles, and the other route will take 7 hours to drive 420 miles. You write two equations to try and figure out the average rate of speed you would travel on each route. How much higher will your average speed be on the faster route?(1 point)
Responses
20 mph
10 mph
60 mph
50 mph
a scientist runs an experiment involving a culture of bacteria. she notices that the mass of the bacteria in the culture increases exponentially with the mass increasing by 229% per week. what is the 1-week growth factor for the mass of the bacteria? what is the 1-day growth factor for the mass of the bacteria? by what percent does the mass of bacteria increase by each day? % if the mass of the bacteria instead increased by 453% per week, by what percent would the mass increase by
The 1-week growth factor for the mass of the bacteria is 3.29.
The 1-day growth factor for the mass of the bacteria is 1.185.
The percentage increase in the mass of bacteria is 18.5%.
The 1-day growth percent for the mass of the bacteria if the mass of the bacteria increased by 453% per week is 27.7%.
The 1-week growth factor for the mass of the bacteria is 1 + (229%*1).
The 1-week growth factor for the mass of the bacteria is 3.29.
The 1-day growth factor for the mass of the bacteria is (3.29)^(1/7).
The 1-day growth factor for the mass of the bacteria is 1.185.
The percentage increase in the mass of bacteria is 18.5%.
The new 1-week growth factor for the mass of the bacteria is 1 + (453%*1).
The new 1-week growth factor for the mass of the bacteria is 5.53.
The 1-day growth factor for the mass of the bacteria if the mass of the bacteria increased by 453% per week is (5.53)^(1/7).
The 1-day growth factor for the mass of the bacteria if the mass of the bacteria increased by 453% per week is 1.277.
The 1-day growth percent for the mass of the bacteria if the mass of the bacteria increased by 453% per week is 27.7%.
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A rectangular toolbox has a length of 20 inches, The width of the toolbox is 7 inches and it's height is 7.5 inches. How much metal would be needed to make the toolbox?
ok
I'll calculate the surface area to answer your question.
Area of the base and top = 2x20x7 = 280 in^2
Area of the frontal and behind faces = 2 x 7x7.5 = 105 in^2
Area of the left and right faces = 2x20x7.5 = 300 in^2
Total area = 280 + 105 + 300
= 685 in^2
The amount of wood needed is 685 in^2
You will have $ in 15 years if you set aside $100 a year at 6%.
The most appropriate choice for simple interest will be given by -
Amount obtained = $28.5
What is simple interest?
Simple interest is the interest earned on a certain principal at a certain rate over a certain period of time.
If principal is p, rate is r%, time is t years
Simple interest = [tex]\frac{p \times r \times t}{100}[/tex]
On adding principal and simple interest, we get amount.
Amount = Principal + Simple interest.
Principal = $15
Rate = 6%
Time = 15 years
Simple interest = [tex]\frac{15 \times 6 \times 15}{100}[/tex]
= $13.5
Amount obtained = $(15 + 13.5)
= $28.5
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What is the image point of (-7,3) after the transformation rx-axis o R180º?
In a composite transformation as given you make first the transformation in the right and then the transformation in the left.
For the given point: (-7, 3)
1. Rotation 180°
[tex]\begin{gathered} P(x,y)\rightarrow P^{\prime}(-x,-y) \\ \\ P(-7,3)\rightarrow P^{\prime}(7,-3) \end{gathered}[/tex]2. Reflection over x-axis:
[tex]\begin{gathered} P^{\prime}(x,y)\rightarrow P^{\prime}^{\prime}(x,-y) \\ \\ P^{\prime}(7,-3)\rightarrow P^{\doubleprime}(7,3) \end{gathered}[/tex]Then, the image of given point after the composite transformation is (7,3)Find the value of X using your method
Answer:
[tex]x = 30[/tex]
Step-by-step explanation:
In the diagram above, MN is a straight line which equals 180.
RL is vertically opposite to KS
(Vertically opposite angles are equal ⟹RL = KS).
So, MN becomes:
[tex]90 + 2x + 30 = 180[/tex]
Collect like terms
[tex]90 + 30 + 2x = 180→120 + 2x = 180→2x = 180 - 120→2x = 60[/tex]
Divide 2x = 60 by 2
[tex]x = \frac{60}{2} [/tex]
Therefore: [tex]x = 30[/tex]
Write the equation of the line passing through the points (-7.4) and (7.2).
The equation of the line is
(Type your answer in slope-intercept form. Use integers or fractions for any numbers in the equation.)
Answer: y = -1/7x + 3
Step-by-step explanation:
Write the equation of the line passing through the points (-7.4) and (7.2).
First, find the slope of the two points by the y2-y1/x2-x1 slope formula.
The slope is -1/7.
Then, use the point slope form y-y1 = m(x-x1).
16 more than s is at most -80 interval notation
The answer in interval notation is given by {96, ∞}.
What is an interval notation?An interval notation can be defined as a set of real numbers which comprises all of the real numbers that are representing a continuous function and lies between two set of numbers.
This ultimately implies that, an interval notation can be used as a technique for writing all of the subsets of the real number line.
Translating the given word problem into an inequality algebraic expression:
16 - s ≤ -80
Adding 80 to both sides of the expression, we have:
80 + 16 - s ≤ -80 + 80
96 - s ≤ 0
Rearranging the expression, we have:
s ≥ 96
Therefore, we have {96, ∞}.
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Complete Question:
Translate and solve: 16 more than s is at most -80.
Give your answer in interval notation.
name the rule and list the next three terms in the pattern 2,4,8,16,32...
This is Geometric progression G P
[tex]\begin{gathered} \\ 2^1=2 \\ 2^2=4 \\ 2^3=8 \\ 2^4=16 \\ 2^5=32 \\ 2^6=64 \\ 2^7=128 \\ 2^8=256 \end{gathered}[/tex]The next three terms are;
64,128,256
If 8,x,y ,-4 are in A.p find x and y
Answer:
Step-by-step explanation:
firstly, 8+d=x and y+d= -4 where d is the common difference of the AP.
Also,
x+d=y;
therefore d=y-x;
so,
8+y-x=x (from the first equation)
=>8+y=2x
=>y=2x-8
Now from the second equation,
y+d= -4
(2x-8)+(y-x)= -4
=>x-8+2x-8= -4
=>3x=12
=>x=4
similarly,
y=2(4)-8
=>y=0
Which postulate would prove the triangles congruent?
Answer:
AAS
Step-by-step explanation:
Because of vertical angle theorem, angle rts and vtu are congruent. This means there are 2 congruent angles with a non-included side
Find 3 ratios that are equivalent to 5:13
In triangle ABC measure of angle A equals 45°. The altitude divides the side AB into two parts of 20 and 21 units. Find BC.
In triangle ABC, BC = 29 units.
Given,
In Δ ABC, ∠A = 45°.
A perpendicular line segment traced from a triangle's vertex to its opposite side is said to be the triangle's altitude.
Let altitude meet AB on D.
So, AD = 20 units and DB = 21 units and ∠ADC = ∠BDC = 90°
In ΔADC,
tan A = DC/AD
tan 45° = DC/20
1 = DC/20
DC = 20 units
In ΔBDC,
BC² = BD² + DC² (Pythagorean Theorem)
= 21² + 20²
= 441 + 400
= 841
BC = √841
= 29
Hence, BC = 29 units.
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Use inductive reasoning to find a pattern and then make a reasonable conjecture for the next number in the sequence.
We will find the pattern as follows:
105 - 104 = 1
104 - 102 = 2
102 - 99 = 3
99 - 95 = 4
95 - 90 = 5
90 - 84 = 6
So, it is reasonable to assume that the next value will be 77.
A car's velocity is modeled by v(t) = 0.5t^2 -14t+ 80 for 0 less than or equal to t less than or equal 14, where the velocity is in feet per second and time is in seconds. Where does the car come to a complete stop?
Answer:
8 seconds
Step-by-step explanation:
See attach worksheet.