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Oduvanchick [21]
2 years ago
7

PLS HELP

Mathematics
1 answer:
____ [38]2 years ago
3 0

Answer:

16 pi  cm^2

Step-by-step explanation:

Area = pi r^2      r = 1/2 d

        = pi (4^2) = 16 pi cm^2

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On a coordinate plane, what is the distance between (-7, 3) and (2,3)?
Angelina_Jolie [31]

Answer:

The distance is 9

Step-by-step explanation:

Distance formula: \sqrt{(x_{2}-x_{1} )^{2}+(y_{2} -y_{1})^2   }

Plug in the points:

\sqrt{(2-(-7))^{2}+(3-3)^2   } = \sqrt{(9)^{2}+(0)^2   } = \sqrt{(9)^2} = 9

7 0
3 years ago
What is equivalent to the expression?
Olegator [25]

Answer:

1/16

Step-by-step explanation:

(2^{2})^{-2} \\2^{2*(-2)} \\ 2^{-4} \\ \frac{1}{2^{4} } \\\frac{1}{16}

7 0
3 years ago
Micah deposited $4000 between two savings account. One account earns 4% simple interest each year. The other account earns 2% si
Zepler [3.9K]
What is the question?
8 0
4 years ago
Find the value of r so that the line through (-4,3) and (r,-3) has a slope of 2/3.
Tems11 [23]

Answer:

<h3>r = -13</h3>

Step-by-step explanation:

The formula of a slope:

m=\dfrac{y_2-y_1}{x_2-x_1}

We have the slope m = 2/3 and the points (-4, 3) and (r, -3). Substitute:

\dfrac{-3-3}{r-(-4)}=\dfrac{2}{3}

\dfrac{-6}{r+4}=\dfrac{2}{3}        <em>cross multiply</em>

2(r+4)=(-6)(3)        <em>divdide both sides by 2</em>

r+4=(-3)(3)

r+4=-9       <em>subtract 4 from both sides</em>

\boxed{r=-13}

6 0
3 years ago
Determine rather each equation is there not a equation. Write yes or no. if yes write equation in standard form. -2x-3=y
abruzzese [7]
I don't know about how to put that in standard form, but an equation has to have an equals sign... So, that would be an equation.
8 0
3 years ago
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