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3 years ago

What’s the answer to this ?

Mathematics

1 answer:

Alexus [3.1K]3 years ago

5 0

Answer:

59.44 units²

Step-by-step explanation:

The area of each triangular section can be computed from the side length (5 units) and the central angle (72°) as ...

... section area = (1/2)sin(72°)·5² ≈ 12.5·0.951057 ≈ 11.8882 . . . units²

Then 5 such sections will have an area of ...

... pentagon area = 5·11.8882 units² = 59.4410 units²

_____

<em>Comment on central angle</em>

The central angles total 360°. There are 5 equal sections, so the central angle for each of them is 360°/5 = 72°.

<em>Comment on area formula</em>

It can be occasionally handy to know that the area of a triangle can be computed from the lengths of adjacent sides and the angle between them. The formula for sides of length "a" and "b" and angle β is ...

... A = (1/2)ab·sin(β)

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3 years ago

There are s swimmers in the swimming club. The club bought 15 swimming caps to split among its members. Write an expression that

vivado [14]

Answer:

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Step-by-step explanation:

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3 years ago

Sloane kicked a soccer ball at a speed of 56 feet per second. If the ball never leaves the ground, then it can be represented by

aksik [14]

Answer:

Third option: $t=3.5\ seconds$

Step-by-step explanation:

Given the function:

$H(t)=-16t^2 +56t$

Since the ball never leaves the ground, you need to substitute $H(t)= 0$ in the function in order to determine the time the soccer ball traveled:

$0=-16t^2 +56t$

Factorizing, you get:

$0=-8t(2t-7)$

Then:

$0=-8t\\\\t=0\ seconds\\\\\\\\0=2t-7\\\\7=2t\\\\t=3.5\ seconds$

Therefore the time the ball traveled was:

$t=3.5\ seconds$

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3 years ago

How do I round off to the nearest decimal place

Marrrta [24]

First, find the digit in the place you are rounding to. Look at the digit one place to the right. If the digit is less than 5, round down. If the digit is 5 or greater, round up.
For example: round 1.86 to the nearest tenth
Look at the tenth digit (8). The number to the right of it is 6. Since it’s above 5, round the 8 up to 9. So you would get 1.9.

If it was 1.84, since 4 is less than 5, you would not round the 8, and you would get 1.8

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3 years ago

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katovenus [111]

Answer:

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So answer C

Step-by-step explanation:

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3 years ago

Read 2 more answers