3 years ago

= Test: Chapter 1-4 Test

Mathematics

1 answer:

pochemuha3 years ago

6 0

Answer:

Step-by-step explanation:

the explanation on D

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Which equation has a constant of proportionality equal to ?<br> 1/2<br> Choose 1 answer:

katrin [286]

Answer:

Step-by-step explanation:

3/6 = 1/2

7 0

3 years ago

Five years ago I was 5 times older than my son. In 8 years’ time I will be 3 times older than my son. How old am I today?

o-na [289]

Let x = Parent's age now y = son's age now

Then, x-5 = parent's age five years ago

y-5 = son's age five years ago

So, x-5 = 5(y-5)

Simplify to get x - 5y = -20

Parent's age 8 years from now = x+8

Son's age 8 years from now = y+8

So, x+8 = 3(y+8)

Simplifying, we have x - 3y = 16

We have the system of equations: x - 5y = -20

x - 3y = 16

Subtract the equations to obtain -2y = -36

y = 18

x = 70

Parent is 70 years old and the son is 18 years old.

6 0

3 years ago

Read 2 more answers

What is the solution to the inequality?

nika2105 [10]

7x + 18 > -3

Subtract 18 from both sides,
7x > -21

Divide from 7,
x > -3

In short, Your Answer would be Option D

Hope this helps!

7 0

3 years ago

Read 2 more answers

Given a=5 b=12 c=13 5²+12²=13²

Advocard [28]

Answer:

a^2+b^2=a(2)^1.5

Step-by-step explanation:

im not sure, just seems right

4 0

3 years ago

Using long division to find the quotient and remainder 4x^4+2x^2-2 divided by x^2+2

emmasim [6.3K]

4x² -6
__________________
x²+2 l 4x^4 +2x² -2
l 4x^4 +8x²
--------------------
-6x² -2
-6x² -12
---------------
10

so the answer is $(4x^2-6) \frac{10}{x^2+2}$

8 0

4 years ago