MATHEMATICS MIDDLE SCHOOL

Recall that two angles are complementary if the sum of their measures is 90°. Find the measures of two complementary angles if one is 10 degrees more than four times the other angle.

Answers

Answer 1
Answer:

Answer:

x+4+×=90

2×=86

×=43

now,

x+4=47

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How many grams are equivalent to 37 milligrams

Answers

37 grams = 0.037 mg.
0.073 is your answer .

Which of the following is a solution to the inequality X > 15 a.16 b.15 c.14 d.0

Answers

A 16 ... x is greater than 15 so it must be 16
its a 16 that's the answer

Which expression has a value of 8, using only four 4s and any of the following: + , – , • , ÷, exponents, and/or parentheses? A. 4 • 4 – 4 – 4

B. 4 • 4 • 4 – 4

C. 4 • 4 + 4 – 4

D. 4 • (4 + 4) – 4

Answers

PEMDAS
A. 4*4-4-4=16-4-4=12-4=8 true
B. 4*4*4-4=16*4-4=64-4=60, not 8 false
C. 4*4+4-4=16+0=16, not 8, incorect
D. 4(4+4)-4=4(8)-4=32-4=28, not 8 incorrect


A

Answer:

A

Step-by-step explanation:

4x4-4-4= 8

A boat can travel 132 miles on 11 gallons of gasoline.how much gasoline will it need to go 252 mileswhat do I do?

Answers

rate is miles/gallons
132/11=12 mile pser 1 galon
ratio and propeortion
132/11=252/xgalons
12/1=252/x
multiply both sides by x
12x=252
divide both sides by 12
x=21

21 gallons
132/11=12per gallon'

12*11=132

252/12=21

21*12=252

11+11=21

21 is your answer

a map of a new dog park shows that it is triangular and that the sides measure 18.5m, 36.6 m, and 16.9 m. Are the dimensions correct?

Answers

First, you can draw a graph or coordinate plane to solve this. But i will do this for you.... OK, so the dimensions are correct, according to my graph... Don't worry, i did the coordinate plane for months in class... Your welcome and hope you do well for your hw. 

Consider the following pair of equations: y = −2x + 8
y = x − 1

Explain how you will solve the pair of equations by substitution. Show all the steps and write the solution in (x, y) form.

Answers

okay so you use the bottom to substitute y so your equation will be:
x-1=2x+8 now solve for x
-x-8=-x-8 this is what you will be taking away from both sides
-1-8=2x-x this is your new equation now you just do basic math
-9=x this is x
Now that you found x find y by substituting x
y=2(-9)+8
y= -18+8
y= (-10) this is your y
Now to check your answer on the other equation
y= -9-1
y= (-10) this is now correct
(x,y)form is (-9,-10)
Hopefully i helped out
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