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Irina18 [472]
3 years ago
9

Help please with tis math problem im in 8th grade

Mathematics
1 answer:
siniylev [52]3 years ago
5 0
A (verdadeiro)
e(verdadeiro)
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Ms Happy has decided to start wearing a face mask, because it is now required of her to do so. The mask she has started wearing
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Answer:

37.20 %

Step-by-step explanation:

Circumference = 2 × pi × r

30 = 2 × 3.14 × r

r = 4.7770700637

Area of her face = pi × r²

3.14 × 4.7770700637²

= 71.6560509556 in²

Area of the mask = 9 × 5 = 45 in²

Uncovered area

= 71.6560509556 - 45

= 26.6560509556 units²

% of uncovered area:

26.6560509556/71.6560509556 × 100

37.2%

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3 years ago
100 points if u help
malfutka [58]

The answer is 87.12

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3 years ago
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Would a scale factor of -2 be considered an expansion or a contraction?
LekaFEV [45]
Scale factors of negative numbers are contractions

scale factors of numbers greater then 1 are expansions
scale factors of numbers greater then 0 but less then 1 are contractions
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3 years ago
Explain how to use grid paper to model 0.2 and 0.02. describe any diffrences
katovenus [111]
Go to the right 0.2 then go up 0.02.
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3 years ago
(05.05)On a coordinate plane, the coordinates of vertices R and T for a polygon are R(−6, 2) and T(1, 2). What is the length of
ICE Princess25 [194]

Answer:

The length of Side RT of the polygon is 7\ units

Step-by-step explanation:

we know that

the formula to calculate the distance between two points is equal to

d=\sqrt{(y2-y1)^{2}+(x2-x1)^{2}}

we have

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substitute the values

d=\sqrt{(2-2)^{2}+(1+6)^{2}}

d=\sqrt{(0)^{2}+(7)^{2}}

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8 0
3 years ago
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