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scoundrel [369]
3 years ago
10

Diagram NOT

Mathematics
1 answer:
horsena [70]3 years ago
3 0

Answer:

31.4 cm

Step-by-step explanation:

se the forumula of the circonference 2r*pi. We aready have the 2 times radius (20 cm) and pi, but we have to divide by 2 the result because it is a semicircle. so 20*3.14/2= 31.4 cm

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x=5, y=8

Step-by-step explanation:

x+y=13

2x-y=2

add these two equations

3x=15

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apply this value in x+y=13

5+y=13

then y=13-5 = 8

8 0
3 years ago
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$1,700

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Multiply the rate that money is being taken out at by the amount taken out at

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The constant of proportionality is always the point ____________, where kis the constant of proportionality.
spayn [35]

Answer:

The constant of proportionality is always the point (x, k * f (x), where k is the constant of proportionality.

Step-by-step explanation:

Let's take as example a linear function of the form: y = kx.

Where, k is the constant of proportionality.

Therefore, the proportionality constant is the point: (x, kx)

Generically it is always the point: (x, k * f (x)

Where, f (x) is a function proportional to x. The constant of proportionality is always the point (x, k * f (x)), where k is the constant of proportionality.

8 0
2 years ago
Harold earns $10.50 per hour working at a doctor’s office. On Monday he spent 1 5/12 hours filing paper work, 1 3/4 sending emai
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Answer:$57.75

Step-by-step explanation:

Find the total amount of hours he worked

1\frac{5}{12} +1\frac{3}{4} +2\frac{1}{3}\\\\\frac{17}{12}+ \frac{7}{4} +\frac{7}{3} \\\\\frac{17+21+28}{12} \\\\\frac{66}{12}=\frac{66/2}{12/2}=\frac{33/3}{6/3}=  \frac{11}{2} or 5\frac{1}{2} or 5.5h

So, he worked 5.5h and he earns $10.50 an hour.

($10.50)(5.5h)=$57.75

5 0
3 years ago
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