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3 years ago

62% of what number is 84

Mathematics

2 answers:

weeeeeb [17]3 years ago

3 0

Answer:

135.48

Step-by-step explanation:

g00gl3

motikmotik3 years ago

3 0

Answer:

135.5

Step-by-step explanation:

0.62 = 62% and 135.5 times 0.62 is 84.01

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Which direction does the graph of f(x) = −18 + x2 − 3x open?

Mekhanik [1.2K]

Please write this equation as <span>f(x) = −18 + x^2 − 3x

Rewrite it in descending order by powers of x: f(x) = x^2 - 3x - 18

Since the coefficient of the x^2 term is +, the graph opens UP.</span>

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3 years ago

What is the measure of the missing angle?

Luda [366]

Answer:

B=23.19

Step-by-step explanation:

First, find the last side of the triangle using the Pythagorean theorem.

$a^{2} +b^{2} =c^{2} \\21^{2} +9^{2} =c^{2} \\441+81=c^{2} \\\sqrt[3]{58}=c$

Then, find the missing angle, lets name it B.

The angle B can be found using the inverse sine function.

B=arcsin(opp/hyp)

$B=arcsin(\frac{9}{\sqrt[3]{58} } )\\B=23.19$

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3 years ago

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2. Find the distance between (-2,1) and (3,4).

Nina [5.8K]

Answer:

$\sqrt{34}$ or 5.83095

Step-by-step explanation:

Use the distance formula $\sqrt{(x_{2}-x_{1} )^{2}+(y_{2}-y_{1} )^2 }$

Make sure to round the answer appropriately if not asked for in square root form!!

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4 years ago

In one full day, a kudzu vine can grow 15 inches in length. How many inches per hour is this?

Rus_ich [418]

1.66666666667 inches per hour

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3 years ago

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A rectangle swimming pool is 8 feet deep. One side of the pool is 4.5 times longer than the other. The amount of water needed fo

wel

The side lengths of the pool 10 ft and 45 ft.

<u>SOLUTION: </u>

Given, a rectangle swimming pool is 8 feet deep.

One side of the pool is 4.5 times longer than the other.

Let the length of pool be n feet, the width will be 4.5n feet

The amount of water needed for the swimming pool is 3600 cubic ft

We have to find the dimensions of the pool. Now, we know that,

$\begin{array}{l}{\text {volume of pool}=\text {depth} \times \text {length } \times \text {width}} \\\\ {\rightarrow 3600 \text { cubic } f t=8 \text { feet } \times \text { n feet } \times(4.5 n) \text { feet }} \\\\ {\rightarrow 8 n \times 4.5 n=3600} \\\\ {\rightarrow 36 n^{2}=3600} \\\\ {\rightarrow n^{2}=100}\end{array}$

On taking square root on both sides we get,

$\begin{array}{l}{\rightarrow\sqrt{n^{2}}=\sqrt{100}} \\\\ {\rightarrow n=10 \mathrm{ft}}\end{array}$

So, the width will be $4.5 n=4.5 \times 10=45 \mathrm{ft}$

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3 years ago