Mathematics High School

x + 2y = 10
-6x + 5y = -9
- what is the solution using substitution

Answers

Answer 1
X+2Y=10
X=10-2Y

-6X+5Y= -9
-6(10-2Y)+5Y= -9
-60+12Y+5Y= -9
17Y= -9+60
17Y=51
Y=3

X=10-2Y
X=10-2•3
X=10-6
X=4

Related Questions

28 vehicles per minute. How many vehicles can be accommodated in an hour?

Answers

Answer:

1680 vehicles

Step-by-step explanation:

28 per minute

60 minutes in an hour

28 * 60 = 1680

Answer:

1,680

Step-by-step explanation: 28x60=1,680

Which rule describes why these triangles are congruent?

Answers

Answer:

Angle-Side-Angle Postulate

Step-by-step explanation:

The Angle-Side-Angle Postulate (ASA) states that if two angles and the included side of one triangle are congruent to two angles and the included side of another triangle, then the two triangles are congruent

Mrs. Carter baked 100 muffins for a bake sale. The muffins were sold in packages of 2. There were 12 muffins left. Write an equation to find how
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Answers

Answer:

2n + 12 = 100 (Equation)2n = 88 (Solving)n = 44 people bought muffins at the bake sale. (Solving)

Step-by-step explanation:

100 muffins, and 2 in each package. Therefore, there are 50 packages. However, in the end, there are 12 left, so there must have been 6 packages left.

Answer:

2n+12=100 ...........

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x + 5y = -3
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Answers

Answer:

x = -2, x = 1

Step-by-step explanation:

mark as brainliest it is right

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Answers

Answer:

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Step-by-step explanation:

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Answers

Answer:

Step-by-step explanation:

2, 405,008 .097

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5  * 1,000      ----------> 5 thousand

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Answers

Answer:

(2y+14.6m+3.8)-(34.8m+15.6+2y)

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Answers

Answer:

28/36 shd give u the answer

answer in 1:ur answer

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Answers

cos(x)tan(x)

Transform the expression by using the formula for tan theta:
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cos(x)= sin(x)/cos(x)

Cancel out the cos(x) since it’s on both sides

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HELP PLS Last year 15 students earned an A in math class. If I had 128 students, what percent of students did NOT earn an A?

Answers

Answer:

88%

Step-by-step explanation:

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A certain pizza box holds a 14-inch diameter pizza. If the box is 2 inches high, what is its surface area?

Answers

Answer:

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Step-by-step explanation:

I will mark brainliest

Answers

Answer:

I think It would be A but I'm not exactly sure

Answer:

It's d no. 5/ x - 2 is the answer of your question

when mark was 2 years old his parents invested 2,000 in a money market account with annual average interest rate of 8% after 15 years how much money will he have in the account

Answers

Answer:

$4400

Step-by-step explanation:

I=PRT

I=(2000)(8%)(15)

I=4400

At a school, 40% of the sixth-grade students said that hip-hop is their favorite kind of music. Only 5% liked Baby Shark the best. 100 sixth-grade students prefer hip hop music. How many 6th grade students are there at the school?

Answers

250 students
Explanation:
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What's the answer to 1.6(2.5-10)+8.2=???

Answers

Answer:

-3.8

Step-by-step explanation:

1.6(2.5-10) + 8.2

1.6(-7.5) + 8.2

-12 + 8.2

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Answer:

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Step-by-step explanation:

1.6 * 2.5 = 4

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Answers

Answer:

The answer is c.

Step-by-step explanation:

Please help

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Answers

Answer: i think it should be 1:3=2:6

Step-by-step explanation:

Answer:

U=1

Step-by-step explanation:

. 5, 10, 20, 40.....​

Answers

Answer:

80, 160, 320, 640....

Step-by-step explanation:

multiply each number by 2

80 160 and so forth, you have to continue to multiply by 2

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Answers

Answer:

50

Step-by-step explanation:

all angles must equal to 180

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Answers

Answer: A

Step-by-step explanation: This is a rotation. An easy way to tell the difference between a rotation and a reflection is that the order of the points will not change in a rotation. For this problem, pre-image ABCD is still in the order of ABCD when mapped to the image. (You can still follow along the points in that order). When something is reflected, the points swap orders and you would not be able to follow the points in order.

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Answers

I think the answer is (2x - 9)(x - 5)

The dimensions of the rectangle will be (2x - 9)(x - 5).

What is a quadratic equation?

A quadratic equation is a polynomial with a degree of 2 or the maximum power of the variable is 2 in quadratic equations. It has two solutions as its maximum power is 2.

Given that the area of the rectangle is represented by a quadratic equation 2x² - 19x +45.

The dimensions of the rectangle will be the factors of the quadratic equation.

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To know more about quadratic equations follow

https://brainly.com/question/1214333

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Answers

Answer:

30m-42 (D)

Step-by-step explanation:

Let's evaluate the expression,

6(5m-7)

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Answers

There will be more left over. 325/4= 81.25

Answer:

Her mistake was in how many bags would be able to equally hold 4 bars.

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Answers

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Answers

Answer:

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Step-by-step explanation:

Answer:

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Answers

Answer:

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

ABCD and JKLM are similar. To find the x, first find the ratio for all of the sides.

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Answers

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Answer:

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Step-by-step explanation:

Which do you think it is?

On Tuesday, Marissa was $45 short of her fundraising goal. The next day, she was $5 over her goal write an equation to show how much she raised in one day.

Answers

Answer: Hello daema, let's let x be the goal and c be the collection per day.

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[need to right more because my question is too short stuff in brackets is irrelevant]

Answers

Add five to both sides
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Divide by -3 on both sides
x = -7
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