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3 years ago

Help with question 9 please:)

Mathematics

1 answer:

OLga [1]3 years ago

7 0

Answer:

4.2

Step-by-step explanation:

First you use the cylinder formula 2 times pi times radius squared plus 2 times pi times radius times height. If you plug it in which is 2 times .8 squared plus 2 times pi times .8 times 1.8 you get 13.0689. Then you multiply that by three because there are three tanks and you get 39.2067. After that you subtract 35 because there are seven tins of paint and they each cover five meters and you get 4.2067. The final answer is No he doesn't have enough paint to cover it completely because he has 4.2 meters left to cover (don't forget to round 4.2067). Here is the work sorry about the picture I took it with my laptop not my phone sorry :). But I hope this helps.

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HELP PLEASE HELP PLEASE

ICE Princess25 [194]

Answer:

a: about 800? nonfiction books in valley

b: valley and central has more fiction than nonfiction books

c: there's probably about 2600 books in hillside

Step-by-step explanation:

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3 years ago

Simplify the expression 30x^6/3x^-2

Ne4ueva [31]

Answer:

$30x^{4}$

Step-by-step explanation:

6 0

3 years ago

In Δ,∠=70°,∠=50° ∠ . <br> ℎ ∠.

AveGali [126]

Answer:

100°

Step-by-step explanation:

A triangle is a polygon shape with three sides. Triangles are of different types such as obtuse, scalene, equilateral, isosceles etc.

In triangle ABC:

70° + 50° + ∠C = 180° (sum of angles in a triangle)

120 + ∠C = 180

∠C = 180 - 120

∠C = 60°

Since ∠C is bisected into ∠ACD and ∠BCD, hence:

∠ACD = ∠BCD = ∠C / 2

∠ACD = ∠BCD = 60 / 2

∠ACD = ∠BCD = 30°

In triangle ACD:

∠A + ∠ACD + ∠ADC = 180° (sum of angles in a triangle)

50 + 30 + ∠ADC = 180

∠ADC + 80 = 180

∠ADC = 100°

6 0

3 years ago

Dinner at chili's came to 27.00. You want to leave a tip of 15%,how much money will you leave for just the tip

sveticcg [70]

Answer:

4.05 dollars

Step-by-step explanation:

4 dollars and 5 cents. 15 percent of 27 is 4.05

8 0

3 years ago

Stephanie had seven add an 8 pound of bird seed she use three out of 8 pound to fill a bird feeder f Stephanie had 7 pound of bi

natulia [17]

So if I understand correctly, she had 7 1/8 pounds of birdseed and used 3/8 pound.
Convert the 7 1/8 to an improper fraction [(8*7)+1]/8 =57/8
57/8 - 3/8 = 54/8, which is 6 6/8 which reduces to 6 3/4 pounds left

If she had 7 pounds of birdseed and used 3/8 pounds, you need to find a common denominator to subtract if you can't do it in your head. 8 would be the common denominator, so:
56/8 - 3/8 = 53/8, which is 6 5/8 pounds left

6 0

4 years ago