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3 years ago

Please help! Will mark brainliest!

Mathematics

1 answer:

Volgvan3 years ago

4 0

Slope=3, Y-intercept=(0,-1)

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Find the area of a circle using 3.14 as pie d=8cm

Naddika [18.5K]

Answer:

A = 50.24 cm

Step-by-step explanation:

Area formula of a circle:

A = π r²

diameter- r+r

which means that your diameter(8) divided by 2 = 4

r of circle= 4

A= 3.14(4²)

A = 3.14(16)

A = 50.24 cm

6 0

3 years ago

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For any circle, which ratio is equal to the number n? Select all that apply. Plsss help me!!

barxatty [35]

Answer:

Options A-C-F

Step-by-step explanation:

we know that

The circumference of a circle is equal to

$C=\pi D$ or $C=2\pi r$

where

D is the diameter and r is the radius

therefore

$\pi =\frac{C}{D}$ or $\pi =\frac{C}{2r}$

The number pi is the ratio circumference - diameter or is the ratio circumference - 2 times radius

The area of the circle is equal to

$A=\pi r^{2}$

therefore

The number pi is the ratio Area - radius squared

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3 years ago

Answer if you want, 10 points

rjkz [21]

Answer:

Step-by-step explanation:

for example

$\frac{8}{4} = 2 \\ \\ 1 \times \frac{4}{5} = \frac{9}{5}$

in the second one you should multiple 5 and 1 then add 4

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3 years ago

Use the quadratic formula to solve the equation X^2+9X+20=0

lions [1.4K]

Answer:

x=-4

x=-5

Step-by-step explanation:

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3 years ago

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In which sentence do the capitalized words represent a prepositional phrase?

larisa [96]

D. , a prepositional phrase indicates relationships b/w subjects and verbs. The A-C answers are all just grammatical variations of actions. Also, if you want a quicker answer next time, try posting in the right section (this one would be English or Language). :)

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3 years ago