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kap26 [50]
2 years ago
13

Please help me im not smart

Mathematics
2 answers:
Marat540 [252]2 years ago
6 0
Hello,

Let’s start solving!

Equation: 5 + 4(3+6) / 2

Step-by-step:

Add the numbers

5 + 4 * 9 / 2

Calculate the expression

5 + 18

Add the numbers

= 23

Explain: Add in parentheses, calculate the expression, add result.

ANSWER: 23

Hope this helps! You are smart!
tester [92]2 years ago
4 0

Answer:

i believe the answer will be 23

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Pretty sure is 90 degrees

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The snooker hall has given you a $40 prize for your 147 break. You decide to share it with your friend in the ratio 3:1. How muc
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it would be A

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A cylindrical canister contains three tennis balls. Assume the tennis balls touch the sides of the canister and the top and bott
sweet-ann [11.9K]
Ok, so we know that teh diameters of the 3 tennis balls added up equals the height of the canister

also, since the tennis balls touch the sides, the diameter of the tennis ball=diameter of the base

so what we do is
canister volume-3tennisballvolume=wasted space

normally alot of the equations are using radius so
2.7=diameter
diameter=2r
d/2=r
2.7/2=r
1.35=r

since we are to aprox volume to hundreth. use 3.14=pi

volume of cylinder=hpir^2
volume of sphere (tennis ball)=volume of spere=\frac{4}{3}pir^{3}

first find volume of cylinder

h=3 times diameter of 1 tennis ball=3 times 2.7=8.1
r=1.35
vofcylinder=8.1 times 3.14 times 1.35^2
v=25.434 times1.8225
v=46.353465 (keep as many digits a possible for accuracy)


volume of tennis balls=volume of shpere times 3
v=\frac{4}{3}pir^{3} times 3
and we can see that the 4/3 and the 3 cancel to get 4
v=4pir^{3}
v=4pi1.35^{3}
v=4(3.14)(2.460375)
v=30.90231


so we have
volume of canister=46.353465 in^3
volume of tennis balls=30.90231 in^3
subtract
wasted space=46.353465-30.90231
wasted space=15.451155
round to hundreth
15.45


wasted space=15.45 in^3
8 0
3 years ago
(FOR K-12 STUDENTS) Keith correctly determined the area of this parallelogram by adding the areas of the triangles and rectangle
Gemiola [76]

The area of the parallelogram using area of rectangle and area of two triangles is 84 m²

<h3>How to find area of a parallelogram</h3>

  • Area of a rectangle = length × width

= 8m × 7m

= 56 m²

  • Area of each triangle = 1/2 × base × height

= 1/2 × 4m × 7m

= 1/2 × 28

= 14m²

  • Total area of triangles = 2(14 m²)

= 28 m²

  • Area of parallelogram = area of rectangle + area of two triangles

= 56 m² + 28 m²

= 84 m²

Learn more about area of triangle:

brainly.com/question/21735282

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2 years ago
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