Mathematics Middle School

Find the solution to the following system using substitution or elimination:
y = -4x + 9
y = 3x - 5
O (1, -2)
O (14, 37)
O (2, 1)
O (1, 5)

Answers

Answer 1

Answer:

a

Step-by-step explanation:

Answer 2

Answer:

(2,1)

Step-by-step explanation:

y = -4x + 9  -------------->eq1

y = 3x - 5  --------------->eq2

consider eq 1 and put in eq2

-4x+9=3x-5

add -9 on both sides

-4x=3x-14

add -3x on both sides

-4x-3x=-14

-7x=-14

x=2

put in eq1

y=-4(2)+9

y=1

S.S=(2,1)

Related Questions

A bicycle has a listed price of $591.99 before tax. If the sales tax rate is 7.25% , find the total cost of the bicycle with sales tax included.
Round your answer to the nearest cent, as necessary.

Answers

You need to add the tax to the price, not subtract. $634.91 is the bike cost + tax

"A curtain manufacturer uses a 90-yard roll of material to make 77 identical curtains. There was 7.75 yards of material left over.

How many yards were needed for each curtain?"

this is what I meant lol

Answers

Answer:

1.06818181 there you go

1.06818181 hehehehehe

The 8 red markers in a box account for 4% of all markers in the box. How many markers are in the box?
a.200
b.100
c.120
d.210

Answers

200 because it’s not 120

Answer:

c I think

Step-by-step explanation:

I don't know...

Look at imagine plz help

Answers

Answer:

it is either a or c sorry if I'm wrong

Answer: I think C

Step-by-step explanation:

Simplify the algebraic expression to simplest form by combining like terms.

-3x + 4 + 2y - 3 - 3y + 5x
------------------
I think it's 2x - 5y + 1 please tell me if i'm wrong <33 (If i'm wrong, tell me the right answer) If you say your not smart in your answer, and don't answer the question I will instantly report.

Answers

Answer:

pls ❤️

Step-by-step explanation:

-3x + 4 + 2y - 3 - 3y + 5x

=2y-3y-3x+5x+4-3

= -y + 2x +1

Coconuts were on sale, 5 for $4.45. Pineapples were on sale, 4 for $3.40. Which of the following is true?
A. Coconuts are 4¢ more each than pineapples.
B. Coconuts are 4¢ less each than pineapples.
C. Coconuts are each 85¢.
D. Pineapples are each 89¢.

Answers

Answer: D

Step-by-step explanation: If you do 4/4.45 you get a number approximate to 89 cents. Answers A and B you can cross of because coconuts are 5 cents more than pineapples

i think the answer is d

Which point on the scatter plot is an outlier? (4 points)

A scatter plot is shown. Point I is located at 2 and 1, Point K is located at 2 and 5, Point J is located at 7 and 4, Point H is located at 8 and 1. Additional points are located at 1 and 7, 4 and 5, 4 and 6, 5 and 3, 7 and 2.
a
Point H

b
Point I

c
Point J

d
Point K

Answers

It should be B but I am not 100 percent sure
B or d sorry if I’m wrong

the side lengths of a triangle are 9,12, and 15. Is this a right triangle? Will give brainliest

Answers

No, I do not believe this is a right triangle

Answer:

YES. it is a right triangle

Step-by-step explanation:

the question is in the photo :)

Answers

Answer:

1st question. A.

2nd question. D

Step-by-step explanation:

PLS HELPP
Enter the expression that is equivalent to −5(x+7y)

Answers

Answer:

-5x+ -35y

Step-by-step explanation:

-5x+ -35y

Distributive Property of Multiplication over Addition

-5(x + 7y)

-5x - 35y

I will choose brainliest. Please solve.

Answers

Answer:

its 4

Step-by-step explanation:

An atlas beetle is about 0.14 meter long. How does the length of the atlas beetle compare to the length of a leaf cutting bee? Bee Lengths (in meters)Bumblebee: 0.019,Carpenter Bee:0.025,Leaf Cutting Bee:0.014,Orchid Bee:0.028,Sweat Bee:0.006

Answers

Answer:

An atlas beetle is about 0.14 of a meter long. 1 tenth is greater than 0 tenths.

Step-by-step explanation:

Go0gle. I'm not smart :P

Which of the following equations is equivalent to 3(a - 5) = 4a ?

Answers

Answer:

2a = 15- a ..................

3(a-5)=4a
3a-15=4a
+15=+15
3a = 19a
•3. •3
=6

In Nancy's class, 11/18 of the girls have brown eyes, 2/9 of the girls have blue eyes, and 1/6 of the girls have hazel eyes. How many of the girls have either blue or brown eyes? [Note: Write your answer in simplest form.]

13/18
13/27
5/6
15/18

Answers

Answer:

15/18

Step-by-step explanation:

Evaluate the following expression when a = 5 and b = 6 3a +10b

65

18

75

45

Answers

The answer is 75 I believe :)

look at the image and answer the question.

Answers

Answer:

So solution: [tex]6(x=2)+2(y=1)=14[/tex] and [tex]5(x=2)-2(y=1)=8[/tex]

([tex]x[/tex])=2

([tex]y[/tex])=1

Step-by-step explanation:

Because, 6[tex]x=2[/tex] + 2[tex]y=1[/tex] = 14 | 6 * 2 = 12 | 2 * 1 = 2 | 12 + 2 = 14 |

Because 5[tex]x=2[/tex] - 2[tex]y=1[/tex] = 8 | 5 * 2 = 10 | 2 * 1 = 2 | 10 - 2 = 8 |

So that's why the answer is ([tex]x[/tex])=2, and ([tex]y[/tex])=1

Look for more of my answers at https://brainly.com/app/profile/26368795

- written in [tex]2/24/2021[/tex]

x =2, y=1, so the answer should be (2,1)

the algebraic expression that represents "The product of 12 and a number, n.

Answers

Answer:

3+n=12

Step-by-step explanation:

Answer:

The expression would be 12 x n

Step-by-step explanation:

What is 623.98 ÷ 1/100

Answers

Answer:

62398

Step-by-step explanation:

Hope this helps :)

62398 this is the answer i think

Which algebraic expression matches the word phrase: 15 more that (c) cars.

15/c

15 - c

15c

c +15

Answers

the answer: 5c
because: i’m smart
might be 15c not sure not that smart

Please Help! Will give brainliest.

Answers

Answer:

it will not show me the pic????

Step-by-step explanation:

PLS HELP IM DYINGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGG

Answers

Answer:

then call 911

Also the answer would be B. i think

Step-by-step explanation:

Answer:

The answer is D. (7.5, 5)

It is proportional to the line of N.

Step-by-step explanation:

What is the answer to 5(2j + 3 + j)?

Answers

15j + 15 i think. since we weren’t given a number for j, i think this is the answer?
5
(
2

+
3
+

)
5
(
2
j
+
3
+
j
)
5(2j+3+j)
Simplify
1
Combine like terms
5
(
2

+
3
+

)
5
(
3

+
3
)
2
Distribute
Solution
1
5

+
1
5

Factor the expression.

Answers

Answer:

1. -4a

2. -4

Step-by-step explanation:

The first problem is 4 x _ = -16a

So it has an a in it and we know 4 x 4 = 16 so it's 4a and its negative so -4a

The second problem is -4

Answer:

-3a/-4

Step-by-step explanation:

Please help with these 3 thank you, you will get brainleiest for the most detailed and/or answering the questions:)

Answers

2.) Given: There are 30 students. 24 are wearing sneakers.

Work: We can figure this out by finding the exact percentage of sneaker-wearers in the class.

To find the percentage, you do 24/30. 24/30 is equal to 80%.


Answer: Joe is wrong. The percentage of students wearing sneakers is 80% and not 70%.


3.) Given: There are 40 people total. 2 women per 3 men.

Work: 2:3 women to men

If we multiply both by 10, we will get 50 people in total.

20:30 = 50

So we need to shrivel this down to 40 by taking out 5 on both sides of the ratio.

50 - 5 - 5 = 15:25 = 40

But the ratio need to be divisible by 2 because of the 2 women that are needed per 3 men. We can do this by moving over one human to the men’s side.

There are 14 women and 26 men. I didn’t use any of the strategies there listed because I don’t even remember what those are. I’m in grade 9. I would say that the ratio table works best because I just used ratios...


4.) Given: Find simplified fraction of silicon. 100%.

Work: Add all things up to find out the denominator for the fraction. They will equal 100.

So the fraction is 28/100.

We can divide this fraction by 4.

7/25

This is the simplified form.


Answer: 7/25


1.Given the rectangular prism shown, what is the surface area?


2.Dimitri wants to cover ONLY the top and sides of the box shown with glass tiles that are 5 cm square. How many tiles does he need?

Answers

Answer:

He will need 60 glass tiles

Step-by-step explanation:

HELP PLEASE!!!
A flower bed is in the shape of a triangle, with a base of 11 feet and a height of 7 feet. What is the area of the flower bed?

38.5 square feet
42.5 square feet
72 square feet
77 square feet

Answers

The answer is 77

7x11=77
:)
It’s 38.5 because it a triangle

Multiply the length by width then divide by 2

algebraaa PLEASE PLEASE HELP ME

Answers

Answer:

x+3=14

x=14-3

Step-by-step explanation:

Answer:

try x= 14-3

Step-by-step explanation:

because you need to add 3+ x to get the same amount as clare's backpack

let me know if this is correct

What is the area of this figure enter your answer in the box

Answers

Answer:

532

Step-by-step explanation:

First you need to figure out the area of the rectangle and the triangle. Then you will add both areas together.

Rectangle

18 x 18 = 324

Triangle

8 + 18 = 26

26 x 16 = 416

416 divided by 2 = 208

Then add both of them together. 208 + 324 = 532

Hope this helped:)!

here please help im stuck on this idhwihef

Answers

Answer: I think, she is incorrect.

Step-by-step explanation:

The shapes are different sizes thus the formula is different. (I'm pretty sure) If I'm correct please name me brainliest. :)

Correct I think not sure

If you have 6 bananas and 5 apples, how many lights are there? My teacher asked this, if you get it right, you get brainliest

Answers

Answer:

I don't know but I am going to say 11

Step-by-step explanation:

Answer:

The Horses name is Friday

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