Mathematics Middle School

1
What is the solution to the system of equations? Use any method you prefer to solve.

y=5/4x-2

y= -1/4x+16

a. (12, 13)

b. (-2, 16)

c. (4, 4)

d. (5, -1)

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Answers

Answer 1
5/4x-2=-1/4x+16 5/4x+1/4x=18 6/4x=18 x=12 y=13 choose a. (12,13)
Answer 2
B is the answer to this

Related Questions

Rearrange the slopes into order from the lardest to smallest

Answers

Answer 1 2 3

Step-by-step explanation:

cap

Basically the first is number two second one third three

You want to buy a new winter coat that originally costs $115. The coat was marked down to $86.25 so you bought it. What percent was the coat discounted by?

Answers

20% hope that helps brainliest

Please Help I can’t figure out 4
The question is down below and I would really appreciate the help!

Answers

Answer:

y = 3x

Step-by-step explanation:

from the table slope or rate of change is

m = 6 - 0 / 2 - 0 = 6/2 = 3

m = 12 - 6 / 4 - 2 = 6/2 = 3

m = 18 - 12 / 6 - 4 = 6/2 = 3

so m = 3

y = mx + c

c is y intercept --> y value when x is 0

y = 0 = c

so line equation is y = 3x + 0

y = 3x

Answer:

B, or 3x.

Step-by-step explanation:

When looking at the x value (time), and the y value (distance), you can see that every time you multiply the x value by 3, you get the y value.

2 x 3 = 6

4 x 3 = 12

6 x 3 = 18

Therefore, your answer is 3x.

-15/-18=10/x
what is X?

Answers

Answer:

12

Step-by-step explanation:

(-15)/(-18) = 10/x cross multiply expressions

-15x = -180 since both sides are negative we can write without the sign

15x = 180 divide both sides by 15

x = 12

The answer you are looking for is 12

PLEASE HELP ME!!

Rewrite the phrase "two less than a number" as a variable expression. Explain how to evaluate it when n=5.

Answers

2 < n ?

The way you worded it confused me but I assume this is what your talking about
2 < n because 2 is less than

I will giver brainliest to the person with the most detailed answer. That means tell me how you got ur answer. And the person who answers with the most clear explanation as well. Good luck!! This is due in 8 minutes as well. And pls number ur answers in order so it is clear!!

Answers

Answer:

(12,13)

Step-by-step explanation:i just guessed

11: the y axis is the vertical line. the red line crosses the y axis at -3 which means that you’ve found your y-intercept for the red line. the blue line crosses the y axis at 1 and for the slope it’s rise/run so if it’s going down it’s a negative

... i need help again....

Answers

I hope you can read it for some reason it didn’t let me add more then one photo it’s been a while since I have done this math hope this helps ^^

4x + 23x - 54x + 7
What is the answer?

Answers

Answer:

−27+7

Step-by-step explanation: First add 23x + 4x=27x

                                             Then subtract 54x gives you -27x

                                               You can't add a regular number with x's so your                                final answer is -27x+7

Answer:

−27x+7

Step-by-step explanation:

What is the slope of the line y=3/5x+7 ?

Answers

Answer:

The slope is 3/5

Step-by-step explanation:

This line is in slope-intercept form, meaning that the slope is the term that is multiplied by x.

WILL CHOOSE BRAINLIEST

Answers

day 13 because do 10-2+1 until it gets to 0

Ill give brainiest to, whom ever gets this correct.

Answers

Answer:

C. area = radius/2 × circumference.

Step-by-step explanation:

Answer:

3

Step-by-step explanation:

Area can not = circumference without dividing it so 4 is wrong

helppppppppppppppppp asap

Answers

Answer:

Step-by-step explanation:

Deeper than 32 i believe

I agree that it’s deeper than 32

where is the y-intercept on a graph

Answers

Answer:

The y-intercept is where the graph intersects with (goes through) the y-axis.

Step-by-step explanation:

The point where the graph passes through the y-axis (vertical axis) is known as the y-intercept.

Answer:

The y intercept on a graph is the y-axis.

Step-by-step explanation:

paying $3.89 for 1.7 pounds of chicken. Can someone help me with this question?

Answers

Answer:

2.29

Step-by-step explanation:

Answer:

Approximately 2.29 per pound of Chicken.

Step-by-step explanation:

3.89/1.7

what is the y-intercept of an equation

Answers

Answer:

The point on a graph where a line crosses the Y-axis (The vertical line)

Step-by-step explanation:

Which number line shows the solution set for StartAbsoluteValue d EndAbsoluteValue greater-than 3?
A number line going from negative 4 to positive 4. Closed circles are at negative 3 and positive 3. Everything to the left of negative 3 and right of positive 3 is shaded.
A number line going from negative 4 to positive 4. Open circles are at negative 3 and positive 3. Everything between the points is shaded.
A number line going from negative 4 to positive 4. Closed circles are at negative 3 and positive 3. Everything between the points is shaded.
A number line going from negative 4 to positive 4. Open circles are at negative 3 and positive 3. Everything to the left of negative 3 and to the right of positive 3 is shaded.

Answers

Answer:hich number line shows the solution set for StartAbsoluteValue StartFraction s Over 2 EndFraction + 4 EndAbsoluteValue less-than 2.? A number line going from negative 14 to positive 10. Open circles are at negative 12 and negative 4. Everything between the points is shaded. A number line going from negative 14 to positive 10. Open circles are at negative 12 and negative 4. Everything to the left of negative 12 and to the right of negative 4 is shaded. A number line going from negative 14 to positive 10. Closed circles are at negative 4 and positive 4. Everything to the left of negative 4 and to the right of positive 4 is shaded. A number line going from negative 14 to positive 10. Closed circles are at negative 4 and positive 4. Everything between the points is shaded.

Step-by-step explanation:

Write a function rule for the statement.

The output is the cube of the input.

y=?

Answers

y is your output
x is your input
so this means x^3 is cube of input

so it should be x^3=y
X^3=y I believe! Also I love your profile picture <3

David wants to purchase some pens. The pens he likes cost $2 each, not including tax. This is represented by the graph below.

Write an equation for the graph of the line.

Answers

Answer:

Step-by-step explanation:

Y = 2x is it I’m pretty sure

This composite figure is made of three identical cylinders that are connected together

Radius:3 Height:8

Answers

The surface are of a cylinder is

SA = 2πr2 + 2πrh

where:
r = radius
h = height

This formula comes from adding the areas of the surfaces of the cylinder. It has two flat circular faces and a rounded face.

If we cut the cylinder from the circular face symmetrically, the surface area for one piece will be

SA = 2[(πr2)/2] + (2πr/2)h + 2rh

We will have 2-half flat circular faces, a flat rectangular surface, and half of the rounded surface.

Simplify the SA formula.

SA = πr2 + πrh + 2rh
SA = r(πr + πh + 2h)

Substitute the values into this formula.

SA = 3(3π + 8π + (2*8))
SA = 3(11π + 16)
SA = 33π + 48
SA = 151.67 cm2

Since we have 2 pieces, multiply this result by 2.

2(151.67 cm2) = 303.34 cm2.

The total area is 303.34 cm2.

Write the equation of the line in the graph in POINT-SLOPE form.

Answers

Answer: y= -8/4x+2

Step-by-step explanation:

find our y-intercept and slope

(rise over run to find your slope)

the two points it provides are what you will use to find the slope

see how for you run from point A to B then your rise as well

it should be rise=-8 run=4

0,2 is your y-intercept

now use your equation y= mx+b

b=your y-intercept and mx= your slope

plug the numbers in and you will get the answer

Please help out!! Im giving 25 pts!!

Answers

Answer:

10,11,aquarium

Step-by-step explanation:

Which comparisons are true? Select all that apply.

A.
7
.
34
>
7
.
304
B.
1
.
628
>
1
.
63
C.
4
.
05
<
4
.
055
D.
9
.
103
<
9
.
13
E.
2
.
29
<
2
.
129

Answers

Answer: I get c, but double check on your end

Step-by-step explanation:

Why is it so unorganized

Problem: (6.5/2)^2 = ?
I got 42.25 over 4, but its wrong. So I did 6.5 times 6.5(to square it) and got 42.25. Then I did 2 times 2 and got 4. So, the answer would be 42.25 over 4, right?

Answers

Answer:

10.5625 is the answer I got.

Step-by-step explanation:

I used the process PEMDAS for this equation.

(6.5÷2)^2

6.5÷2= 3.25^2

Now you bring down the new quotient and multiply it by itself.

3.25 x 3.25= 10.5625

the answer is 10.56
use pemdas

HELP HELP HELP HELP!!!!

Answers

Answer:

99 x 29 = 2871

Step-by-step explanation:

he could multiply 29 by 99

99x29=2871 because I’m right i always am

Fill anwer! 10 Points. 5 for answering 5 or 3 for brainliest

thank you!

Answers

30

Keep in mind 90% = 0.9
To get his answer write out the expression like this: .90 * x = 27

Then rewrite it to find “x”:
x = 27/0.90
X = 30

Simplify the expression.

2(a-3)=

Answers

Answer:

2a - 6 =

Step-by-step explanation:

yeah-ya........ right?

(ik someone answered with the same answer but heres a more detailed answer)

2(a-3) =
To simplify distribute;
2xa - 3x2 =

Answer: 2a-6

Dominic makes bread to sell at his local farmers' market. It costs $1.58 for Dominic to make a loaf of bread. How much money will he spend if he makes 12 loaves of bread?

Answers

Answer:

$1.58X12=$18.96

Step-by-step explanation:

$1.58x12=$18.96 for 12 loaves of bread :)

An online media service offers video and music downloads. Each download of a song costs $1. Each download of a video costs 5 times as much as the song download. You have a credit of $70. How many songs can you purchase after buying 12 videos?

Answers

You can buy 10 songs.

Answer:

You can purchase 10 songs after buying 12 videos.

Step-by-step explanation:

Step 1 - Find out how much downloading a video costs. If the cost of a video download is 5 times as much as a song download costs, and a song download is $1, then you'd have to multiply 5 x $1, which equals 5. So downloading a video costs $5.

Step 2 - Find how much it costs to buy 12 videos by multiplying the cost of 1 video to how many you bought, 12. We already found out 1 video costs $5, so that would 12 x $5, which equals $60. That means those 12 video downloads costed you $60 dollars.

Step 3 - Find out how many songs you can buy with your remaining credit. If you already payed $60 dollars worth of videos, then you only have $10 dollars left to spend because $70 - $60 is $10. So if every song costs $1 dollar, then you'd be able to purchase 10 more songs until you reach your credit, $70 dollars.

Paul's rule is "square, triangle, circle." How can Paul find the seventeenth shape?

Tell me if you need anything to answer my question :)

Answers

Answer:

1. keep counting

2. He can do 5 times 3 to get to the 15th shape and then say 2 more to get the 17th shape.

(The 17th shape would be triangle)

Help me wit dis question I’ll give you brainliest

Answers

Answer:

6

Step-by-step explanation:

Answer:

She'll find 6 items in 3/4 of an hour.

Step-by-step explanation:

First, change 3/4 to 6/8. Then, do you 6/8 divided by 1/8 to get your answer of 6 items in 3/4 of an hour.

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