3 years ago

HW Score: 10%,

Mathematics

1 answer:

liq [111]3 years ago

7 0

The delivery man can carry about 14 boxes of books

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1. Find the equation of a line that is perpendicular to y=-2/3+4 and goes through (0,5)

Dafna1 [17]

Y = 3/2 + 5
since it’s perpendicular, flip the numerator and denominator of the slope and b=5 because it’s going through the y-axis at (0,5)

7 0

3 years ago

Read 2 more answers

The endpoints of a diameter of a circle are A(2,1) and B(5,5). Find the area of the circle in terms of pi.

Tcecarenko [31]

Answer:

The area of the circle is $A=6.25\pi\ units^{2}$

Step-by-step explanation:

step 1

Find the diameter of circle

we know that

The diameter of the circle is equal to the distance AB

the formula to calculate the distance between two points is equal to

$d=\sqrt{(y2-y1)^{2}+(x2-x1)^{2}}$

substitute the values

$AB=\sqrt{(5-1)^{2}+(5-2)^{2}}$

$AB=\sqrt{(4)^{2}+(3)^{2}}$

$AB=\sqrt{25}$

$AB=5\ units$

therefore

the diameter of the circle is

$D=5\ units$

step 2

Find the area of the circle

The area of the circle is equal to

$A=\pi r^{2}$

$r=5/2=2.5\ units$ ----> the radius is half the diameter

substitute

$A=\pi (2.5)^{2}$

$A=6.25\pi\ units^{2}$

4 0

3 years ago

What's the circumference of a circle with a radius of 2 inches? Use 3.14 for pi

erma4kov [3.2K]

Answer:

6.28

Step-by-step explanation:

2 x 3.14

8 0

3 years ago

<img src="https://tex.z-dn.net/?f=9%282x%20%2B%201%29%20-%202%283%20-%20x%29" id="TexFormula1" title="9(2x + 1) - 2(3 - x)" alt=

Crazy boy [7]

Answer:

20x + 3

Step-by-step explanation:

Simplify

9(2x + 1) - 2(3 - x) =
18x + 9 - 6 + 2x =
20x + 3

7 0

4 years ago

Read 2 more answers

Angle Pairs-Relationships

mario62 [17]

Answer: Angle 1 is 36

Angle 2 is 54

Step-by-step explanation:

x+18+3x=90

4x+18=90

4x=72

x=18

18+18=36

18*3=54

4 0

3 years ago