Mathematics Middle School

Part A: Explain how you will solve this pair of equations using substitution. Show all the steps and write the solution. (5 points)

Part B: On a graph, what point will the lines representing the two equations intersect? Explain your answer. (5 points)

y = 16x + 4
y = 25x − 23

Answers

Answer 1

Answer:

y = 16x + 4

y = 25x - 23              

____________

16x + 4 = 25x - 23

27 = 9x

3=x

__________

y = 25(3) - 23

y = 75 - 23

y = 52

_________

They will intersect at (3, 52)

Step-by-step explanation:

The second step which is bolded I simplified the equation. In the next step I'm going to substitute 3 into the second equation.

Related Questions

what is 9 · y − 8 ÷ 4 when y = 5??

Answers

Answer:

43 if you follow the steps of PEMDAS

Step-by-step explanation:

9x5=45. 8÷4=2. 45-2=43

Hope this helps!

pls help me I have to finish this in order to get a passing grade

Answers

Answer:

im not sure but i think its C

im soooo sorry if its wrong

Step-by-step explanation:

Find the missing angle in a triangle with the given sides.

Answers

Answer:

[tex] \angle[/tex]Z = 1°

Step-by-step explanation:

Since the shape is a triangle it means that all it's interior angles sum to 180°

To find the missing angle sum up the known angles and subtract them from 180°

That's

[tex] \angle[/tex]X + [tex] \angle[/tex]Y + [tex] \angle[/tex] Z = 180°

89° + 90° + [tex] \angle[/tex]Z = 180°

[tex] \angle[/tex]Z = 180 - 179°

We have the final answer as

[tex] \angle[/tex]Z = 1°

Hope this helps you

Answer:

1°

Step-by-step explanation:

Given angles

<x=89°<y=90°

We know that in a triangle

Sum of angles=180°

[tex]\rm \mapsto \angle x + \angle y + \angle z = 180 \\ \rm \mapsto89 + 90 + \angle z = 180 \\ \rm \mapsto179 + \angle z = 180 \\ \rm \mapsto\angle z = 180 - 179 = 1[/tex]

HELP ASAP! This which craft makes no sense at all :/

Answers

The answer should be 89.98 cm squared
Your answer is 89.98
I hope that’s works

Complete the sentences below based on the graph of the function.

The illustration below shows the graph of y as a function of x.

Answers

x interslope is -7 then the y intercept is 1.

i dont know the slope tho.

hoped that helped:P

Quickkk!!!! HELP!!!!!

Answers

Answer:

Too blurry.

But the answer should be the two angles u have add up together.

Step-by-step explanation:

Answer:

70

Step-by-step explanation:

180-40-30 = 110 which is the interior angle of 1

And then you would do 180-110 = 70 to get the exterior angle

Hope this helps!

This is for the people who really need the points to ask a question about their homework. Please, take it and ask questions on homework you don’t know how to answer to. It’s ten points to each person, enough to make a question for the both of you :)

Just to make sure it isn’t deleted, what is 1.5M written out in words?

Answers

Answer:

1.5 million

Step-by-step explanation:

By the way, thanks for the points :)

hey i'm new to this, i'm sure if i ask my question or if i answer your question but i guess i'll ask my question

What conflicting views on state and federal authority are revealed in Webster's and Calhoun's speeches?

Can I have some help, thank you! ( NO LINKS )

Answers

Answer:

26) 1  28) 120  30) 36

Step-by-step explanation:

I hope this help you :))

For each question, identify the population and a possible sample.

Answers

Answer:

1 The number of people who bought the book.  A best-seller list from the 1990s

2 The entire US.  List of new cars bought between the given time points

3 The poplulation of North America that`s teachers.   A Random sample of teachers incomes from different places inside North America.

4 A group of Tasmanian Devils.   A few Tasmanian devils in a controlled environment

Hope this helps

I need help with math I have no clue how to do these

Answers

The answer is 20579.5

A triangular prism is 40 millimeters long and has a triangular face with a base of 24 millimeters and a height of 35 millimeters. The other two sides of the triangle are each 37 millimeters. What is the surface area of the triangular prism?

Answers

Answer:

26,508

Step-by-step explanation:

To find out how to solve this is that we first need to know that Triangular prisms have their own formula for finding surface area because they have two triangular faces opposite each other. The formula A=12bh is used to find the area of the top and bases triangular faces, where A = area, b = base, and h = height.

Also: To find the total surface area of a prism, you need to calculate the area of two polygonal bases, the top face and bottom face. And then calculate the area of lateral faces connecting the bases. Add up the area of the two bases and the area of the lateral faces to get the total surface area of a prism.

The top= 12 x 24 x 35 = 10,080

The lateral faces: 12 x 37 x 37 = 16,428

Surface Area= 10,080 + 16,428 = 26,508

Complete each statement with a number that makes the statement true. Value of x that would make the statement on the left true

A. x<7°C =

B. x<-3°C =

C. -0.8°C D. x>-2°C =

D. x>-2°C =

Answers

Step-by-step explanation:

D. x>-2°C =

Clara wants to paint her bedroom sky blue, so she mixes white and blue paint. Then, she decides to mix paint for her living room. To make sure she has enough paint for the larger room, Clara plans to use double the amount of white paint and double the amount of blue paint. Which room will be a lighter shade of blue?

Answers

Answer:

Same shade

Step-by-step explanation:

Shes doubling the paint mixture to have enough for the other room

Both will have the same shade of blue because she is making sure to use equal paint depending on each room.

Hope this helped and have a nice day : )

a 36 foot is attached from the top of a pole to a bracket that is 9 feet from the base of the pole how tall is the pole?

Answers

The answer is 4feet

Find The Output!!
Real answers please!!

Answers

Answer:

Step-by-step explanation:

solving x is x=6h-102

and h is h=x/6+17

Simplify the following expression: 3 *3 (−4) *2 2 *6 (−3) *5


*= subscript

Answers

Answer:

71280

Step-by-step explanation:

Answer:

I hope this helps because I'm just like looking at the equation because is this the equation.

3x3(-4) x 2exponent 2 x 6(-3) x 5

If it is the answer is 12960

Step-by-step explanation:

PLEASE ANSWER BEFORE APRIL 23
1. The elevation of Death Valley, California is -282 feet. The elevation of Tallahassee, Florida is 203 feet. The elevation of Westmorland
California is -157 feet.
a. Compare the elevations of Death Valley and Tallahassee using < or>
b. Compare the elevations of Death Valley and Westmorland.

Answers

Answer: 282 feet < 203 feet

Step-by-step explanation:

Solve for volume please

Answers

Answer:

35.25

Step-by-step explanation:

brainly please

Answer:

V = 780yd

Step-by-step explanation:

We are given a rectangular prism with 3 different sides of numbers, then are asked to find the volume.

The volume of a rectangular prism is V = lwh

l = 20yd

w = 3.25yd

h = 12yd

All we need to do to find the volume is multiply all the number together :

V = 20yd * 3.25yd * 12yd

V = 65yd * 12yd

V = 780yd

please answer fast due at the end of class

Answers

m > -2 is the answer

The figure of a rocket launched for space exploration is shown below.



For this problem, use 3.14 for , and enter any non-integer values as decimals rounded to the nearest hundredth.

The cone's volume is approximately
cubic meters.

The cylinder's volume is approximately
cubic meters.

The rocket's total volume is approximately
cubic meters.

Answers

Answer:

I am confused

Step-by-step explanation:

There is no question so Imma just put BANANA

please help me by answering and showing your work

Answers

Answer:

25

Step-by-step explanation:

|y| + 4 - y * x

x = 7; y = -2

Step 1. Plug in given values for x and y.

|y| + 4 - y * x =

= |7| + 4 - 7 * (-2)

Now follow the correct order of operations.

= 7 + 4 - (-14)

= 7 + 4 + 14

= 25

a rectangular bin has a perimeter of 30 inches . the length of the bin is twice the width. write and solve an equation to determine the length , in inches, of the bin. then find the area , in square inches of the bin.

Answers

Answer:

60 inches

Step-by-step explanation:

name at least two independent variables that could result in a change in a monthly electric bill
ill give thanks and brainliest ;-;
(please i had to repost since a bot answered my last questions, waste of my 20 points

Answers

Answer: There are often not more than one or two independent variables tested in an experiment, otherwise it is difficult to determine the influence of each upon the final results. There may be several dependent variables, because manipulating the independent variable can influence many different things.

Two independent variables that could result in a change in the monthly electricity bill are: Physical size of products and Skill level of operators of machines.

Independent Variables

Independent variables are the determining factors that influence how a dependent variable changes.

For example, monthly electricity bill is a dependent variable which is dependent on the following:

Physical size of productsSkill level of operators of machines.Non-production machines utilizing electricity among others.

Therefore, two independent variables that could result in a change in the monthly electricity bill are: Physical size of products and Skill level of operators of machines.

Learn more about independent variable on:

https://brainly.com/question/25223322

Math again... ):
I’m not doing high points this time because of links
If you show work, I’ll mark you as Brainliest! <3
Link = Report :

Answers

Answer:

630 feet

Step-by-step explanation:

First convert rectangular field to 3 square field of side 21yards .

Answer:

630 ft is correct

Step-by-step explanation:

If you had a cube with a side length of 4, how can your write the calculations in exponential

Answers

Answer:

easy. the anwers would all be multiplied by 4 as all sides of a cube are equal

Step-by-step explanation:

What is the slope of the line that passes through the points listed in the table?

A. -4
B. -1
C. 1
D. 4

X | Y
1 | 4
2 | 3

Answers

C is the correct answer

Answer: D. 4

Step-by-step explanation:

im guessing?

Which of the following is a sensory organ?


arteries

eyes

lungs

spinal cord

Answers

Answer:

Eyes

Step-by-step explanation:

I’m pretty sure

Answer:

Eyes

Step-by-step explanation:

Teh sensory organs relate to the 5 senses and also allow you to experience through them. The eyes allow you to see

A teacher surveys a sample of students from Lake Middle School. He asks the students where they’d like to go for a field trip. He records these results:

80 choose the aquarium.
60 choose the science center.
30 choose the planetarium.
40 choose the farm.
The teacher wants to figure out the relative frequency of a student choosing the aquarium. He will then estimate how many students out of all 1000 at the school are likely to choose the aquarium.

Answer the questions to solve the problem.

1. How many students did the teacher survey?


Write your answer in the space below.















2. What is the relative frequency of a student choosing the aquarium? Give your answer as a decimal rounded to the nearest hundredth. Show your work.


Write your answer in the space below.















3. Suppose the teacher surveys one student at random. Based on the survey results, what is the estimated probability that the student chooses the aquarium?


Write your answer in the space below.















4) Write and solve a proportion that the teacher can use to estimate how many students in the whole school would choose the aquarium. Show your work.


Write your answer in the space below.

Answers

Answer:

1 is 210

Step-by-step explanation:

i got he answer by adding the 4 things up

Answer:

210 student's

Step-by-step explanation:

80 students chose the aquarium.

60 students chose the science center.

30 students chose the planetarium.

40 students chose the farm.

The students can't vote for more than one place, so you just add all the numbers together.

80 + 60 + 30 + 40 = 210 students

Step-by-step explanation:

Some one pls help me asap

Answers

Answer:

10.5 is the answer thank me later

Step-by-step explanation:

Lara is filling water bottles for a bicycle race. The number of hours she expects to be on the course will affect how many water bottles lara prepares

1. the number of hours lara expects to be on course

2. the number of water bottles lara prepares

Choose which is a independent variable and dependent variable

Answers

Answer:

Independent variable-  Number of water bottles preparing

Dependant variable- Number of hours she expects to be on the course

Step-by-step explanation:

The independent variable is the one you change. Lara in this case is changing  the number of water bottles, she is preparing them. The dependant variable you can think of as the effect- depending on how many she prepares will influence the number of hours on the course.

On a graph, remember that the independent variable is on the bottom.

Hope this helps!

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