All categories

2 years ago

HELPPPPP PLS AND THANK YOU

Mathematics

1 answer:

julia-pushkina [17]2 years ago

3 0

Answer:

First, you need to know the general volume formula of a prism

$V=Sh$

We can think of the bottom as a triangle facing us, the height is 12.5ft

Use the formula to get

V=Sh=（4×6×1/2）×12.5=150 ( $ft^{3}$ )

You might be interested in

Solve −x+5≤4 or 2x+3≥−1 and write the solution in interval notation.

serg [7]

Answer:

Step-by-step explanation:

$\left \{ {{-x+5\leq 4} \atop {2x+3\geq -1}} \right.$ ⇒ $x\geq 1\\2x\geq 4\\x\geq -2$

$x \geq -2\\(-2,+ { \infty} )$ (Answer)

6 0

1 year ago

Alicia answered 20 out of 25 problems correctly on a test. What percent did she get correct?

DedPeter [7]

80% of the problems correct.

3 0

2 years ago

Read 2 more answers

5#The distribution of scores on a standardized aptitude test is approximately normal with a mean of 480 and a standard deviation

kirza4 [7]

We want to find the value that makes

$P(X\ge x)=0.2$

To find it we must look at the standard normal table, using the complementary cumulative table we find that

$P(Z\ge z)=0.20045\Leftrightarrow z=0.84$

Then, using the z-score we can find the minimum score needed, remember that

$z=\frac{x-\mu}{\sigma}$

Where

σ = standard deviation

μ = mean

And in our example, x = minimum score needed, therefore

$\begin{gathered} 0.84=\frac{x-480}{105} \\ \\ x=0.84\cdot105+480 \\ \\ x=568.2 \end{gathered}$

Rounding to the nearest integer the minimum score needed is 568, if you get 568 you are at the top 20.1%.

7 0

1 year ago

Here is another problem that can also be solved by working backwards.

g100num [7]

According to my brain, Maddy picked 6 cucumbers.

5 0

2 years ago

Read 2 more answers

This is an inequality:

Mariulka [41]

X - the unknown number
4*x <108
x<108:4
x <22
it depends if x € N, Z or R
for R: x €(-infinite, 22)
for Z: x € {....-4,-3,-2,-1,0,1,...,21}
for N:x €{0,1,2,3,...,20,21}

5 0

2 years ago