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4 years ago

Please help, answer both questions.

Mathematics

1 answer:

victus00 [196]4 years ago

3 0

Answer:

1. area = πr^2

= 3.14× 9×9

= 254.3 m^2

2. area = 3.14× 10×10

= 314 yd^2

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Solve for n. 2 n - 3 / 5 = 5 n =

Finger [1]

Answer: 2 4/5 or 14/5 or 2.5

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3 years ago

Mulder will read the files on ninenine unsolved cases from a list of fourteenfourteen. He does not care about the order in which

netineya [11]

Since the order of the selection of files does not matter, this is the concept of combination not permutation.
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3 years ago

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wariber [46]

The lines that intersect at Park Avenue and Hawthorne Boulevard are perpendicular to each other because they intersect at a 90 degree angle.

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3 years ago

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Determine whether the lines are parallel, perpendicular, or neither. y= -2x+5 y= 1/2x+3

stira [4]

$Let\ k:y=m_1x+b_1\ and\ l:y=m_2x+b_2,\ then:\\\\l\ ||\ k\iff m_2=m_1\\\\l\ \perp\ k\iff m_2m_1=-1\\---------------------------\\\text{We have}\\\\y=-2x+5\to m_1=-2\\\\y=\dfrac{1}{2}x+3\to m_2=\dfrac{1}{2}\\\\m_2\neq m_1\to \text{the lines are not parallel}\\\\m_2m_1=\dfrac{1}{2}(-2)=-1\to\text{the lines are perpendicular}\\\\Answer:\ \boxed{\text{The lines are perpendicular}}$

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3 years ago

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Find the slope, vertical intercept and horizontal intercept of (2,9) and (4,3)

Lelu [443]

Answer:

M = - 3

Step-by-step explanation:

Find the Slope:

Slope is equal to the change in y over the change in x

, or rise over run.

m = $\frac{change in Y}{change in X}$

The change in x is equal to the difference in x-coordinates (also called run), and the change in y is equal to the difference in y-coordinates (also called rise).

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

Substitute in the values of x and y into the equation to find the slope.

m = $\frac{3-(9)}{4-(2)}$

Simplify.

m = $\frac{-6}{2}$

m = -3

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4 years ago