Here are the test scores for 15 students in Mr. M's class.

Mathematics

1 answer:

jekas [21]2 years ago

6 0

60%. You count how many total (15) and then how many got below a 90 (9) and then divide 9 by 15.

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Determine which consecutive integers do not have real zeros between them.

Alisiya [41]

The answer is option c (-1,0)
Solving the equation you get that the zeros of this are approximately
x ≈ -2.8019
x ≈ -1.4450
x ≈ 0.24698
Then the function has three real roots, but none of them is within the range (-1,0)
Below is a graph of the function.

5 0

3 years ago

Read 2 more answers

if the reserve rate is 10% and a bank receives a deposit of $320,000, how much of the $320,000 is the bank free to loan out?

Irina18 [472]

I think its 32,000,
320,000 - 10% = 288,000 - 320,000 = 32,000

7 0

3 years ago

Read 2 more answers

Help please, i don't understand it!!!!

velikii [3]

$V=\dfrac{4}{3}\pi r^3\ \ \ |\cdot\dfrac{3}{4}\\\\\pi r^3=\dfrac{3V}{4}\ \ \ \ |:\pi\\\\r^3=\dfrac{3V}{4\pi}\ \ \ |:r\\\\r^2=\dfrac{3V}{4\pi r^2}$

Substitute to S.A.

$S.A.=4\pi r^2=4\pi\cdot\dfrac{3V}{4\pi r^2}=\dfrac{3V}{r}$

$\dfrac{S.A.}{V}=\dfrac{4\pi r^2}{\frac{4}{3}\pi r^3}=\dfrac{3}{r}$

$\dfrac{S.A.}{V}=1\to\dfrac{3}{r}=1\to r=3$

Answer: B

6 0

3 years ago

A lumber company needs to estimate the volume of wood a load of timber will produce. The supervisor knows that the volume of woo

Hitman42 [59]

Answer with Step-by-step explanation:

Let the volume be represented by 'V'

Since it is given that Volume varies with height 'h' and square of the girth 'g' we can write

$V=khg^2$ where 'k' is a constant of proportionality