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Harrizon [31]
3 years ago
10

#18-7: Find the radius of a circle that has an area of 4.5216 cm^2. Use 3.14 for pi.

Mathematics
1 answer:
sertanlavr [38]3 years ago
8 0

Answer:

r = 1.2 cm

Step-by-step explanation:

Area (A) of a circle = πr²

r² = \frac{A}{Pi}

r = \sqrt{\frac{A}{Pi} }

r = \sqrt{\frac{4.5216}{3.14} } = 1.2 cm

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17. Tonya's mother is 1.5 times as tall as
andrew-mc [135]

The question is incomplete:

17. Tonya's mother is 1.5 times as tall as  Tonya was when she was 6. How tall  is Tonya's mother? Use the correct  number of significant digits.

The image with the information about Tonya's height is attached.

Answer:

68 in.

Step-by-step explanation:

According to the information given, you can write the following expression:

x=1.5y

x=Tonya's mother height

y= Tony's height when she was 6

Also, you know from the table that Tonya's height when she was 6 was 45 in. and you can replace this value in the formula:

x=1.5*45

x=67.5

Because of this, the answer is that Tonya's mother height is 68 in.

3 0
3 years ago
Complete the equation of the line through (-10,-7)(−10,−7)(, minus, 10, comma, minus, 7, )and (-5,-9)(−5,−9)(, minus, 5, comma,
Tanzania [10]

Answer:

y = -\frac{2}{5}\cdot x - 11

Step-by-step explanation:

First, the slope is determined by using the following expression:

m = \frac{y_{2}-y_{1}}{x_{2}-x_{1}}

m = \frac{-7-(-9)}{-10 - (-5)}

m = -\frac{2}{5}

The y-intercept is found by using the line equation, the slope and one point:

y = m \cdot x +b

b = y - m\cdot x

b = -7 - \left(-\frac{2}{5}\right)\cdot (-10)

b = -11

The equation of the line is:

y = -\frac{2}{5}\cdot x - 11

7 0
3 years ago
Question 15 of 20
grandymaker [24]

Answer: 3 inches

Step-by-step explanation:

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2 years ago
I need to know how to do this problem
Free_Kalibri [48]

Answer:

x = 15

Step-by-step explanation:

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4 years ago
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If one third of t is 7 than t is equal to 21
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3 years ago
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