MATHEMATICS MIDDLE SCHOOL

If sales tax in your city is 4.4 and an item cost 3$ before tax how much tax would you pay on that item?

Answers

Answer 1
Answer: 3.13 dollars because you would mutiply 3 by 0.0044 and get .132 round it than add it to 3 dollars!

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MIDDLE SCHOOL

The diameter of a circle is 16 yards. What is the circle's area?

Use 3.14 for ​.

Answers

Answer: 200.96 yd²

Step-by-step explanation: To find the area of a circle, start with the formula for the area of a circle.

Notice that here, we're given the diameter instead of the radius. Remember that the radius is equal to half of the diameter so the radius of this circle will be equal to half of 16 yards or 8 yards.

So plugging into the formula, we have (π)(8 yd)².

A common mistake is to plug 16 yards into the formula but remember that we must plug in the radius and not the diameter.

Multiplying, (8 yd)² is equal to 8 yards × 8 yards or 64 yards².

So we have 64π yd².

So the area of the circle is 64π yd².

Now, remember that the irrational number π is approximately equal to 22/7 or 3.14 so we can estimate the area of the circle by plugging in 3.14 for π.

So we have (64)(3.14) which is equal to 200.96.

So the area of the circle is approximately equal to 200.96 yd².

Answer:

100.48

Step-by-step explanation:

i got the answer right

MIDDLE SCHOOL

Find the surface area of a cylinder with diameter of 10 and height of 4

Answers

Answer:

282.78

Step-by-step explanation:

radius  = diameter / 2 = 10/2 = 5

Surface area:

A=2πrh+2πr^2

A=(2 * 3.142 * 5 * 4) + (2 * 3.142 * (5)^2)

A=125.68 + (2 * 3.142 * 25)

A=125.68 + 157.1

A=282.78

Answer:

282.74

Step-by-step explanation:

MIDDLE SCHOOL

Which could be a first step in solving the equation 2.5x + 1.2 = 1.2x + 4.2 in an efficient way? A) Add 4.2 to each side B) Subtract 1.2 from both sides C) Divide both sides by 1.2x D) Multiply both sides by 2.5

Answers

Answer:B

Step-by-step explanation: Subtract 1.2 from both sides

Answer:

B

Step-by-step explanation:

HIGH SCHOOL

In a bag of candy, there are 4 tootsie rolls, 3 lollipops, 5 hershey kisses and 6 starbursts. if you select one piece of candy at random, what is the probability that it will be a lollipop?

Answers

4 tootsie rolls, 3 lollipops, 5 hersheys kisses, 6 starbursts......for a total of 18 pieces of candy.

now...there are 3 lollipops.....and 18 total pieces of candy.....so the probability of selecting a lollipop is : 3/18 which reduces to 1/6
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