What needs to be done before you try to solve the equation 2x2 = -6+ 8a?

Answers

Answer 1

Answer:

Answer: You need to separate the variable (A) from the rest of the equation.

Step-by-step explanation:

Simplify and move everything except the variable
2x2 = -6 + 8a >>> 4 = -6 + 8a >>> 10 = 8a
Then, divide both sides by the amount of A (8)
10 / 8 = 1.25
8 / 8 = 1
1.25 = A

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What inequality symbol below makes the statement above true? 3.5_3/5

Answers

Answer:

3.5>3/5

Step-by-step explanation:

Which of the following is the solution to the equation 25^(z − 4) = 125?

Answers

Your answer is 2z = 11 or z = 5.5

Hope this helps.

Justin weighs 15 pounds less than Greg weighs. Half of Greg’s weight is 75 pounds less than Justin’s weight. How much does each of them weigh

Answers

The answer is:
Justin weighs 165 pounds.
Greg weighs 180 pounds.

If:
j - Justin's weight
g - Greg's weight

Then the system of equations is:
j + 15 = g ⇒ g = j + 15
1/2g = j - 75 ⇒ j = 1/2g + 75

We can replace j in the first equation:
g = 1/2g + 75 + 15
g - 1/2g = 90
1/2g = 90
⇒ g = 90 ÷ 1/2 = 180

Thus, Greg weighs 180 pounds.

Now, using the first equation, we will calculate Justin's weight:
j + 15 = g ⇒ j = g - 15
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Thus
j = g - 15 = 180 - 15 = 165

Therefore, Justin weighs 165 pounds.

What is 2/3 of 8 please help me

Answers

In math, there are a few words to keep an eye out for because it will give you directions for your equations...

"of" means times (×)
"is" means equals (=)

So you translate you sentence into an equation...

What is 2/3 of 8
what = 2/3 × 8

2/3 × 8 =
2/3 × 8/1 = 16/3

now reduce... 3 goes into 16 five times with 1 left over...

16/3 = 5 1/3

Which solid has a volume that is 3 times the volume of a cone with the same base and height?a.cylinder
b.prism
c.pyramid eliminate
d.sphere?

Answers

Answer: (a) Cylinder

The formula for volume of a cone = 1/3 π r² h

The formula for volume of a cylinder = π r² h

The answer is A. Cylinder

In an experiment using 30 mice, the sample proportion of the mice that gained weight after a drug injection is 0.65. What is the 99.7% confidence interval for the actual proportion in the population?a)between 0.602 and 0.697

b)between 0.563 and 0.737

c)between 0.476 and 0.824

d)between 0.389 and 0.911

Answers

The answer is B.) between 0.563 and 0.737

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