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2 years ago

Find the value of x (I need help with both of them pls)

Mathematics

1 answer:

Aleks04 [339]2 years ago

6 0

Answer:

1. x = 21

2. x = 19

Step-by-step explanation:

Since the interior angles of all quadrilaterals add up to 360, all we have to do is add them up and set them equal to 360. Combine like terms and we get

7x + 213 = 360

Which further turns to 7x = 147

So x = 21

For the second problem, it's the same thing

By the end we get 2x + 8 = 46

2x = 38

x = 19

Hope this helps

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Blanchard City's water tower is cylindrical in shape and has a height of 40 feet and a radius of 18 feet. What is the exact volu

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Volume = PI x r^2 x h, where r is the radius and h is the height.

Volume = PI x 18^2 x 40

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The exact volume would be 12,960PI cubic ft.

The decimal answer would vary depending on what value of PI is used.

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3 years ago

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2 years ago

What is the 185th digit in the following pattern 12345678910111213141516...

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3 years ago

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The Garzas plan to invest $2,000 for 5 years. What annual simple interest rate must the investment earn in order for the Garzas

insens350 [35]

Answer:

r=20%

Step-by-step explanation:

we know that

The simple interest formula is equal to

$A=P(1+rt)$

where

A is the Final Investment Value

P is the Principal amount of money to be invested

r is the rate of interest

t is Number of Time Periods

in this problem we have

$t=5\ years\\ P=\$2,000\\ A=\$4,000\\r=?$

substitute in the formula above

$4,000=2,000(1+5r)$

solve for r

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3 years ago

(a) A tram moved downward 72 meters in 8 seconds at a constant rate. What was the change in

Alex787 [66]

Answer:

a) 9 meters.

b) The total change in temperature was of 288ºC

Step-by-step explanation:

Both these questions can be solved using rules of three.

a) 72 meters in 8 seconds. How many meters it changes each second(in 1 second)?

8s - 72m

1s - x m

$8x = 72$

$x = \frac{72}{8}$

$x = 9$

9 meters.

b) In 1 hour, heated by 6ºC. How much in total during 48 hours?

1h - 6ºC

48h - xºC

x = 48*6

The total change in temperature was of 288ºC

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2 years ago