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sweet [91]
3 years ago
6

Find the area of a circle with a diameter of 12 inches. Use 3.14 for pi

Mathematics
1 answer:
Andreas93 [3]3 years ago
4 0

Answer:

A =113.04 in ^2

Step-by-step explanation:

The area of a circle is given by

A = pi r^2

The radius is 1/2 of the diameter

r = 1/2 (12) = 6

A = pi (6)^2

A = 36 pi

Using 3.14 for pi

A = 36 (3.14)

A =113.04 in ^2

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What is the y-intercept of the line perpendicular to the line y = -x + 3 that includes the point (3, 1)?
Jlenok [28]

Slope-intercept form:  y = mx + b  [m is the slope, b is the y-intercept or the y value when x = 0  --->  (0, y) or the point where the line crosses through the y-axis]

For a line to be perpendicular to another line, the slope has to be the negative reciprocal of the original line's slope.

For example:

Slope(m) = \frac{1}{2}

Perpendicular line's slope: -\frac{2}{1}   or -2         [positive to negative]

m = -\frac{3}{1}  or  -3

Perpendicular line's slope: \frac{1}{3}        [negative to positive]

y = -x + 3

m = -1         So the perpendicular line's slope is 1, now plug it into the equation

y = mx + b

y = x + b     To find b, plug in the point (3, 1) into the equation

1 = 3 + b     Subtract 3 on both sides to get b by itself

1 - 3 = 3 - 3 + b

-2 = b      The y-intercept is -2

4 0
3 years ago
Solve for x<br> angle given: 32<br> answer choices<br> -64<br> -32<br> -90<br> -58
marishachu [46]

Answer:

58

Step-by-step explanation:

Angle NPO is a right angle, then the angle 32 is equal to angle PNO, so x = 90 - 32 = 58.

3 0
3 years ago
A bicycle manufacturing company makes a particular type of bike. Each child bike requires 4 hours to build and 4 hours to test.
Bess [88]

Answer:

4c+6a\leq120\\\\4c+4a\leq100

Step-by-step explanation:

Let c represents child bikes and a represents adult bikes.

Given :  Each child bike requires 4 hours to build and 4 hours to test. Each adult bike requires 6 hours to build and 4 hours to test.

With the number of workers, the company is able to have up to 120 hours of building time and 100 hours of testing time for a week.

Then, the required system of inequality :-

4c+6a\leq120----(1)\\\\4c+4a\leq100-----(2)

If company make 10 child bikes and 12 adult bikes in the week.

Then Put c=10 and a=12 bikes in (1) and (2).

4(10)+6(12)=40+72=112\leq120⇒Bike order meets the restrictions

4(10)+4(12)=40+48=88\leq100⇒Bike order meets the restrictions

Hence, the system of inequality best explains whether the company can build 10 child bikes and 12 adult bikes in the week.

4c+6a\leq120\\\\4c+4a\leq100

3 0
3 years ago
Which equation can be used to calculate the area of the shaded triangle in the figure below?
lozanna [386]

Answer:

A

Step-by-step explanation:

The area (A) of a triangle is calculated using the formula

A = \frac{1}{2} bh ( b is the base and h the perpendicular height )

here b = 14 and h = 4, hence

A = \frac{1}{2} (14 × 4) = 28

7 0
3 years ago
Al, Tom and Joe share €3000.
agasfer [191]

Answer:

Tom's share = €800

Step-by-step explanation:

Given that:

Amount shared by Al, Tom and Joe = €3000

Ratio of Al's share to Tom's share = 5 : 4

Joe's share = 1.5(Tom's share) = 1.5(4) = 6

Therefore,

Ratio of Al, Tom and Joe = 5 : 4 : 6

Let,

x be the number of times of amount each get.

5x + 4x + 6x = 3000

15x = 3000

Dividing both sides by 15

\frac{15x}{15}=\frac{3000}{15}\\x=200

Tom's share = 4x = 4(200) = €800

Hence,

Tom's share = €800

5 0
3 years ago
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