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3 years ago

I don't understand this I need someone to explain the answer

Mathematics

1 answer:

Temka [501]3 years ago

4 0

So,

Proportion basically means, that something is proportional

Example: A rope's length and weight are in proportion.

It's in proportion because the longer the rope, the more the weight

so, let's say

A popcorn machine costs 20 an hour

And in order to rent one, you have to pay $32 dollars

So you pay 32 for the machine, then 20 for every hour you use it

the number of hours used WOULD be proportional to the cost because

the more hours used, the more the cost

your final answer: YES it is proportional

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Sam is planting a garden that measures

nikitadnepr [17]

Answer:

63.7 feet

Step-by-step explanation:

We can re-write the width and the length both as rational numbers:

- Width: $w=6.5=\frac{65}{10}$

- Length: $L=9.8=\frac{98}{10}$

So now we can find the area of the garden by multiplying width and length:

$A=wL=\frac{65}{10}\cdot \frac{98}{10}=\frac{65\cdot 98}{10\cdot 10}=\frac{6370}{100}=63.7$

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2 years ago

Solve the equation with special factors. (Please show all steps) <br> 16q^2 - 81 = 0

guapka [62]

Answer: $q=\frac{\sqrt{81}}{16}$

Step-by-step explanation:

$16q^2-81=0\\16q^2=0+81=81\\16q=\sqrt{81} \\q=\frac{\sqrt{81}}{16}$

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2 years ago

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Novosadov [1.4K]

Answer:

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Step-by-step explanation:

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3 years ago

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A semicircle has an area of 76.97 squared km. Find it’s radius

shtirl [24]

Answer:

7 km

Step-by-step explanation:

Substitute:

The equation for area of a semi-circle is $\frac{r^{2}\pi }{2}$

A = $\frac{r^{2}\pi }{2}$

76.97 = $\frac{r^{2}\pi }{2}$

Multiply by 2 on both sides:

2(76.97) = ( $\frac{r^{2}\pi }{2}$ )2

153.94 = $r^{2} \pi$

Divide by pi on both sides:

153.94 = $r^{2} \pi$

/pi /pi

49.03 ≈ $r^{2}$

Find the square root:

$\sqrt{49.03} =\sqrt{r^{2} }$

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2 years ago

Nerissa has 5 pink bows, 1 blue bow, and 4 purple bows in a box. She will randomly choose 1 bow from the box. What is the probab

SCORPION-xisa [38]

Answer:2/5

Step-by-step explanation: ok so you take everything and you add it up you get a total of 10 then if you were going to grab a purple one there are 4 purple bows you can then simplify 4/10 to 2/5 and there is your aswer.

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2 years ago

I don't understand this I need someone to explain the answer​

I don't understand this I need someone to explain the answer