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3 years ago

Find the area. Use 3.14 for the value of . Round your π answer. when the radius is 20ft?

Mathematics

1 answer:

lys-0071 [83]3 years ago

8 0

Answer:

1256.64ft squared.

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The Cost of 625 bolts is $100.What is the coast of 10 bolts?

lys-0071 [83]

$1.60.
You do 100 divided by 625 to get 16 cents. You then multiply .16 times 10 to get $1.60

6 0

3 years ago

Factor this expression completely.<br><br> 39x − 52y + 13

Jet001 [13]

Answer:

13(3x-4y+1)

Step-by-step explanation:

Rewrite 52 as (4)(13)

Rewrite 39 as (3)(13)

$=(3*13)x+(4*13)y+13$

Then factor out the common term 13

$13(3x-4y+1)$

That is your answer!

Have a nice day. Please vote brainliest!

7 0

3 years ago

Read 2 more answers

Sally is having a party and she has invited nine of her friends.

Alexeev081 [22]

Answer:

1) 5 limes, 5 lemons, 1,000 mL of pineapple juice, 2,000 mL of lemonade, 1,000 of orange juice

2) Limes = $2, Lemons = $2.5, Lemonade = $1.60, Orange Juice = 80c, Pineapple Juice = 90c

Step-by-step explanation:

1/2 limes · 10 = 5

1/2 lemons · 10 = 5

100 mL of pineapple juice · 10 = 1,000 mL

200 mL of lemonade · 10 = 2,000 mL

100 mL of orange juice · 10 = 1,000 mL

Cost:

5 limes · 0.4 = $2

5 lemons · 0.5 = $2.5

mL to L

1,000 mL of pineapple juice = 1 L, this costs 90¢

2,000 mL of lemonade = 2 L, this costs $1.60

1,000 mL of orange juice = 1 L, this costs 80¢

Overall:

5 limes for $2

5 lemons for $2.5

1 L of of pineapple juice for 90¢

2 L of lemonade for $1.60

1 L of orange juice for 80¢

3 0

3 years ago

Sandy spent half of her allowance going to the movies. She washed the family car and earned 9 dollars. What is her weekly allowa

Alex17521 [72]

Well since she first used half of her allowance all we do is just 9-14=5 and 5*2=10 so we now kn ow that her allowance is of 10 bucks.

4 0

3 years ago

Two Identical Buildings stand parallel on opposite sides of a road. Find the angle of depression from A to B

Aleks04 [339]

Answer:

8.7°

Step-by-step explanation:

The above problem can be represented by a right angled triangle with height of 7 m, hypotenuse = AB.

The base of the triangle is gotten by finding the diagonal of the road. That is using Pythagoras theorem:

base² = 43² + 15²

base² = 2074

base = 45.54 m

Using trigonometric function to find angle A:

tan(A) = base / height

tan(A) = 45.54 / 7

tan(A) = 6.506

A = tan⁻¹ (6.506)

A = 81.3°

Angle of depression = 90° - A = 90 - 81.3

Angle of depression = = 8.7°

6 0

3 years ago