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4 years ago

Extra points

Mathematics

1 answer:

weqwewe [10]4 years ago

5 0

Answer:

Sale tax rate = 7.5%

Step-by-step explanation:

The book cost $12.95

If you take 12.95 x 0.075 = 0.97125

Round the answerto the hundredth (0.97)

Add the tax, 12.95 + 0.97 = 13.92

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How to find area of a circle.

hjlf

Answer:

A rea of a Circle = π × r²

Step-by-step explanation:

The area of a circle formula is A = π × r² where r is the radius.

Remember that the radius might not be given but the radius is half of the diameter.

For π use the calculator value or use 3.14.

8 0

3 years ago

HELP me with These questions

Feliz [49]

Answer: 13.96 in²

Step-by-step explanation:

radius (r)

d = 2r

16 = 2r

8 = r

angle in radians (θ)

$\frac{180}{\pi} =\frac{25}{\theta}$

180(θ) = 25(π)

θ = $\frac{25}{180}\pi$

θ = $\frac{5}{36}\pi$

Area (A)

A = $\frac{1}{2}$ r² θ

= $\frac{1}{2}(8)^{2}(\frac{5}{36}\pi)$

= $\frac{40}{9}\pi$

= 13.96

*************************************************************************

Answer: 12π

Step-by-step explanation:

s = rθ

= 60 $(\frac{\pi }{5})$

= 12π

*************************************************************************

Answer: 22.440 cm²

Step-by-step explanation:

A = $\frac{1}{2}$ r²θ

= $\frac{1}{2}$ (10)² $(\frac{\pi} {7})$

= $\frac{50}{7}\pi$

= 22.440

*************************************************************************

Answer: 270°, 630°, -450°, -810°

Step-by-step explanation:

positive: -90 + 360 = 270

270 + 360 = 630

negative: -90 - 360 = -450

-450 - 360 = -810

*************************************************************************

Answer: $\frac{3\pi} {4}$

Step-by-step explanation:

$\frac{19\pi} {4} - 2\pi$

= $\frac{19\pi} {4} - \frac{8\pi} {4}$

= $\frac{11\pi} {4}$

$\frac{11\pi}{4} - 2\pi$

= $\frac{11\pi} {4} - \frac{8\pi} {4}$

= $\frac{3\pi} {4}$

If you subtract another 2π, you will end up with a negative value. The question asks for the smallest positive value.

5 0

4 years ago

Calculate the kinetic energy of a block which is 30 kg it is moving with a velocity of 20 m/s to the left

Romashka [77]

Answer:

Step-by-step explanation:

7 0

3 years ago

Thirty-five percent of students at Jones High School ride the bus. Two hundred seventy-three students ride the bus. How many stu

elena55 [62]

When I solved it I got 750.(273÷.35=780)

3 0

3 years ago

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How do I solve: m-77 = 222

Alona [7]

Answer:

m = 299

Step-by-step explanation:

When isolating variables, you must do the same thing to both sides of the equation. To isolate "m", you must add 77 to both sides.

m - 77 = 222 <----- Original equation
+77 +77 <----- Add 77 to both sides

m + 0 = 299 <----- Resulting equation

m = 299 <----- Rewrite

3 0

2 years ago

Read 2 more answers