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Alexxx [7]
3 years ago
15

Can someone help me with this problem please :)

Mathematics
1 answer:
Readme [11.4K]3 years ago
4 0

Answer:

y = \frac{15}{2}

Step-by-step explanation:

Given y varies directly with x then the equation relating them is

y = kx ← k is the constant of variation

To find k use the condition y = 10 when x = 20

k = \frac{y}{x} = \frac{10}{20} = \frac{1}{2}

y = \frac{1}{2} x ← equation of variation

When x = 15, then

y = \frac{1}{2} × 15 = \frac{15}{2}

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The volume of a storage tank is 1695.6 m3. The radius is 6m. How tall is the storage<br> tank?
Andreas93 [3]

Answer:

the storage tank is a cylinder.

The formule to calculate the volume is:

v =\pi{r}^{2}  \times h

h = v \div \pi {r}^{2}

h = 1695.6 \div 36 \times \pi = 14.992

7 0
3 years ago
Read 2 more answers
Karen walked 3.5 miles to her friends house. She wants to express this distance in feet. Write a proportion to find the number o
nata0808 [166]

Step-by-step explanation:

1 mile=5280 feet

2 miles=10560 feet

3 miles=15840 feet

3.5 miles=18480 feet

Answer:

<u>1 mile= 5280 feet</u>

3.5 miles=    x

4 0
3 years ago
What is a million times all the numbers in the world
kozerog [31]
Well, there isn’t really an end for numbers...

However; The biggest number referred to regularly is a googolplex (10googol), which works out as 1010^100. That isn’t the end to numbers but it is a huge one. We will replace that with ‘all the numbers in the world’.

106 is the exponent equivalent to 1 million

So your question would be:
106 x 1010^100 =

However I don’t believe there is a calculator that large.
7 0
3 years ago
Evaluate 4c + 8 when c = 2
Wittaler [7]

Answer:

16

Step-by-step explanation:

4c + 8

Replace 'c' with 2 and evaluate:

4(2) + 8

8 + 8

16

Hope this helps.

8 0
3 years ago
Read 2 more answers
Round Ed to the nearthest tenth and answer now question
Vikki [24]

Answer:

y = 9.1

Step-by-step explanation:

y can be found using the Law of sines as explained below:

m < Y = 106°

m < X = 58°

WY = x = 8

WX = y = ?

Thus,

\frac{x}{sin(X)} = \frac{y}{sin(Y)}

\frac{8}{sin(58)} = \frac{y}{sin(106)}

\frac{8}{0.848} = \frac{y}{0.961}

Multiply both sides by 0.961 to solve for y

\frac{8}{0.848}*0.961 = \frac{y}{0.961}*0.961

\frac{8*0.961}{0.848} = y

\frac{8*0.961}{0.848}*0.961 = y

9.07 = y

y = 9.1 (to the nearest tenth)

7 0
3 years ago
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