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3 years ago

I really need help please

Mathematics

1 answer:

weqwewe [10]3 years ago

8 0

Answer:

45 degree

A right triangle has a 90-degree angle and two 45-degree angles.

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A thermometer shows a temperature of Negative 20 and three-fourths degrees. A chemist recorded this temperature in her notebook

Mariulka [41]

Answer: Negative 20.75

Step-by-step explanation:

The question simply wants us to convert the temperature shown by the thermometer to decimal. We should note that the temperature shown is Negative 20 and three-fourths degrees.

First, we convert 3/4 to decimal. This will be:

= 3/4 = 0.75.

Therefore, -20 3/4 = -20.75

3 0

3 years ago

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If your invest $150 at 7% interest compounded annually,in how many years will you have $400?. Give your answer of the nearest te

taurus [48]

Answer:

14.5 years.

Step-by-step explanation:

Given that you invest $150 at 7% interest compounded annually. Now we need to find about in how many years will you have $400. Then round the answer ot the nearest tenth of a year.

So plug the given values into compound interest formula.

$A=P\left(1+r\right)^t$

$400=150\left(1+0.07\right)^t$

$\frac{400}{150}=\left(1+0.07\right)^t$

$\ln\left(\frac{400}{150}\right)=\ln\left(1+0.07\right)^t$

$\ln\left(\frac{400}{150}\right)=\ln\left(1.07\right)^t$

$\ln\left(\frac{400}{150}\right)=t\cdot\ln\left(1.07\right)$

$\frac{\ln\left(\frac{400}{150}\right)}{\ln\left(1.07\right)}=t$

$14.4967313882=t$

Which is approx 14.5 years.

8 0

4 years ago

PLEASE HELP ILL MAKE YOU THE BRAINIEST!!<br> Find the area of the shaded segment of the circle

irina1246 [14]

Answer:

Exact Area =

16pi - 32 square meters

Decimal Approx:

A = 18.3 sq m

Step-by-step explanation:

In degrees, it's 360° all the way around a circle. The 270° in the image is to show you that the small piece (the triangle and yellow segment) are in a 90° part of the circle. That is 1/4 of the circle, this helps with area two ways. We'll find 1/4 of the circle area and also, that makes the triangle base 8 and height 8. This helps us find triangle area. See image.

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3 years ago

Over the summer, Stan worked for his uncle at his shop. His summer earnings totaled $8,160. With Stan going back to school in th

Ainat [17]

Answer:

Step-by-step explanation:

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3 years ago

When comparing two jobs, Chris noticed that the hours every week were the same at each, but the job at the hospital paid $3.00 p

guajiro [1.7K]

Let the hourly wage at mall=$x
number of hours=320/x
then hourly wage at hospital=$x+3
number of hours=440/(x+3)
$now \frac{320}{x} = \frac{440}{x+3} 
cross multiply
440x=320(x+3)
440x=320x+960

$ $440x-320x=960
120x=960
x= \frac{960}{120} =8$
so hourly wage at mall=$8

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3 years ago

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