2 years ago

Find the area of a circle with a diameter

2 answers:

6 0

To get the answer divide the diameter by two, so you can get the radius. So plug it into the formula A=π 8²=π (8²)=64π =200.96 and for multiplying pie I just used 3.14 instead the entire number so I could get it by having the decimal in the hundredths place.

koban [17]2 years ago

6 0

64 pi. Half of 16 is 8 and 8 squared is 64.

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A container contains water at temperature 80 degree celcius. After every 10 minutes, the change in temperature is - 4 degree cel

lilavasa [31]

For this case, the first thing we must do is define variables.
We have then:
x: number of minutes
y: final temperature
We write then the equation that models the problem:
$y = (-4/10) x + 80
$
For y = 20 we have:
$20 = (-4/10) x + 80
$
Clearing x:
$(4/10) x = 80 - 20

x = (10/4) * 60

x = 150$
Answer:
The temperature of the water will be 20 degree celcius after 150 minutes

4 0

3 years ago

What is the measure of BGD?

slamgirl [31]

Answer:

90 degrees

Step-by-step explanation:

Angle BGD is supplementary with angle DGE.

BGD + DGE = 180

Since angle DGE is a right angle, then Angle BGD must also be a right angle:

BGD + 90 = 180

BGD = 90

7 0

3 years ago

(4x + 2), (2x +3), and (x-2)

Lena [83]

The answer is 7x-3 if you add like terms which are 4x, 2x, and x then take 2, 3, -2 and subtract from each other

4 0

2 years ago

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What is the distance between the points (-7, 5) and (-2, -7)

harkovskaia [24]

Answer:

The distance between those points is 13.

Step-by-step explanation:

1. (x2-x1) = (-2 - -7) = 5

2. (y2-y1) = (-7 - 5) = -12

3. (5)2 + (-12)2 = 25 + 144 = 169

4. √169 = 13

5. 13

7 0

3 years ago

PLzzz help this is due in 20mins. The standard recipe for Hershey's chocolate is 3 cups cocoa and 2 cups milk. If Hershey's deci

klio [65]

Answer: 60 cups of cocoa and 40 cups of milk I believe

Step-by-step explanation:

times 3 cups of cocoa by 20

times 2 cups of milk by 20

7 0

3 years ago

Read 2 more answers