MATHEMATICS MIDDLE SCHOOL

What is the solution of the system? Use elimination. -12x - y = 6

17x + y = 4

Answers

Answer 1
Answer: A) -12x - y = 6

B)  17x + y = 4   Adding both equations:
5x = 10
x = 2
Since x =2 
17x + y = 4

17 * 2 + y = 4
y = 4 -34
y = -30

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Norachai rented a bike from Adam's Bikes. It cost $17.10 plus $5 per hour. If Norachai paid $32.10 then he rented the bike for how many hours?

Answers

he biked 3 hours.

Hope this helps!
32.10 - 17.10 divided by five = FOUR HOURS!

Kate sets a goal to walk 3 miles every day for a year. How many miles more or less than 1000 miles will she walk in the year

Answers

Answer:

95

Step-by-step explanation:

365x3=1095

The area of a rectangle is 128 sq. ft. If the width is twice the length, what is the measure of the length of the rectangle?

Answers

Length is 8 and width is 16. I hope this helps!
We calculate the area of ​​a rectangle with the equation

A = LW*1/2
A = The area of a rectangle
L = the height of the triangle
W = the base of the triangle

If the equation is one unknown to solve them quickly .
A = 128sq.ft
L = ?
W = 2L

substitute values ​​into the formula

A = L * W *1/2
128sq.ft = Lft. * (2Lft) *1/2
128 = L²
L = √128 = 8√2

W = 2L = 2*8√2 = 16√2

Joshua has to earn more than 92 points on the state test in order to qualify for an academic scholarship. Each question is worth 4 points, and the test has a total of 30 questions. Let x represent the number of test questions.Which of the following inequalities can be solved to determine the number of questions Joshua must answer correctly?a. 4x < 30
b. 4x < 92
c. 4x > 30
d. 4x > 92

Answers

x-represent\ the\ number\ of\ test\ questions\n4x-the\ number\ of\ earned\ points\n \nJoshua\ has\ to\ earn\ more\ than\ 92\ points\n \n4x>92\ \ \ \Rightarrow\ \ \ Ans.\ d

Help Please I'm Out Of Time ;( Find the area of the following figure.
Explain how you found your answer.

Answers

Answer:

Total area = 31.5 unit²

Step-by-step explanation:

Assume 1 block = 1 unit²

Divide diagram into 3 part

1. 5 by 5 block square

2. 2 by 2 block triangle(1)

2. 3 by 3 block triangle(2)

Area of square = side × side

Area of square = 5 × 5

Area of square = 25 unit²

Area of triangle(1) = [1/2][base][height]

Area of triangle(1) = [1/2][2][2]

Area of triangle(1) = 2 unit²

Area of triangle(2) = [1/2][base][height]

Area of triangle(2) = [1/2][3][3]

Area of triangle(2) = 4.5 unit²

Total area = Area of square + Area of triangle(1) +Area of triangle(2)

Total area = 25 unit² + 2 unit² + 4.5 unit²

Total area = 31.5 unit²

A survey of 40 shoppers found that 12 like Crunchy Cereal and 23 like Wheat Cereal. Twice as many dislike both brands as like both brands. How many shoppers like both brands?a.15 c.5

b.7 d.10

Answers

i think its c. 5 but i was never good at math soo
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