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Olegator [25]
3 years ago
7

2a + b if a=5 and b=4

Mathematics
1 answer:
aleksley [76]3 years ago
7 0

Answer:

14

Step-by-step explanation:

2a + b

2(5) + 4

2 x 5 = 10

10 + 4

= 14

hope this helped!

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The mean score on a physics test was 75 points. Amy’s score was 67 points, which was 2 standard deviations below the mean. What
Norma-Jean [14]

Answer:

Its 16

Step-by-step explanation:

i had the same question and this was the answer on the unit test

7 0
2 years ago
A sphere has a volume of 457.3 in^3. What is the radius of the sphere?
Ne4ueva [31]

Answer:

\large\boxed{R\approx4.78\ in}

Step-by-step explanation:

The formula of a volume of a sphere:

V=\dfrac{4}{3}\pi R^3

R - radius

We have the volume V = 457.3 in³. Substitute:

\dfrac{4}{3}\pi R^3=457.3\qquad\text{multiply both sides by 3}\\\\4\pi R^3=1371.9\qquad\text{divide both sides by 4}\\\\\pi R^3=342.975\qquad\text{divide both sides by}\ \pi\\\\R^3=\dfrac{342.975}{\pi}\qquad/\pi\approx3.14/\\\\R^3\approx\dfrac{342.975}{3.14}\\\\R^3\approx109.2277\to R\approx\sqrt{109.2277}\\\\R\approx4.78\ in

4 0
4 years ago
Let f(x) = 9 – x g(x) = 3 – x. Find (f – g)(x)
ANEK [815]

Answer:

Step-by-step explanation:

Remark

This would be easier to understand if it was written like f(x) - g(x). You might see what the question really is.

Equation

(f - g)x = f(x) - g(x)

Solution

(f - g)x = 9 - x - (3 - x)                       remove the brackets

(f - g)x = 9 - x - 3 + x

(f - g)x = 6

5 0
3 years ago
What is the answer to this equation 1/2 ()4+8 ()=-40
Korolek [52]

Answer:

answer is 46.

Step-by-step explanation:

1/2=.5

4+8=12

so (.5)(12)+40=46

3 0
4 years ago
Someone plz help me !<br> Giving brainliest
nevsk [136]

Answer:

(6,3)

Step-by-step explanation:

It will make a weird diamond shape.

6 0
3 years ago
Read 2 more answers
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