2 years ago

HELP ASAP

Mathematics

2 answers:

slega [8]2 years ago

7 0

Answer:

Step-by-step explanation:

The sample size wasn't big enough. It could only be a trend in that grade.

Troyanec [42]2 years ago

3 0

Answer:

Mr. Rodriguez made a reasonable assumption. His surveys were random, non-biased, and relatively large in comparison to the school population. 12 out of 60 is 20%.

Step-by-step explanation:

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10x^3+40x^2+15x<br>------------------------------<br> 5x<br>

Anna71 [15]

Answer:

Step-by-step explanation:

$\dfrac{10x^3 + 40x^2 + 15x}{5x}\\ \dfrac{10x^3}{5x} +\dfrac{40x^2}{5x}+\dfrac{15x}{5x}$

2x^2 + 8x + 3 is your final answer.

4 0

3 years ago

Solve 5v2+25=115 , where v is a real number

hodyreva [135]

5v^2 + 25 = 115
5v^2 = 115 - 25
5v^2 = 90
v^2 = 90/5
v^2 = 18...take the square root of both sides eliminating the ^2
v = (+-) sqrt 18

v = 4.24 or v = -4.24

6 0

3 years ago

Read 2 more answers

it takes 1/2 of a box of nails to build a bird house if you wanted to build 5 bird houses how many boxes would you need

dedylja [7]

Answer:

You would need 2.5

Step-by-step explanation:

You can use a porportion to solve.

$\frac{.5}{1} = \frac{x}{5}$ (cross multiply and solve)