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2 years ago

HELP!!!!

Mathematics

1 answer:

zimovet [89]2 years ago

8 0

Answer:

$37.55\ m$

Step-by-step explanation:

we know that

The perimeter of the figure is equal to the perimeter of semicircle plus the perimeter of quarter circle plus two times the length of $2\ m$ plus two times the length of $5\ m$

Find the perimeter of semicircle

we know that

The circumference of a semicircle is equal to

$C=\frac{1}{2}\pi D$

we have

$D=10\ m$

substitute

$C=\frac{1}{2}\pi(10)=5 \pi\ m$

Find the perimeter of a quarter of circle

we know that

The circumference of a quarter of circle is equal to

$C=\frac{1}{4}\pi D$

we have

$D=10\ m$

substitute

$C=\frac{1}{4}\pi(10)=2.5 \pi\ m$

Find the perimeter of the figure

$5 \pi\ m+2.5 \pi\ m+2*2\ m+2*5\ m=7.5 \pi\ m+14\ m$

$7.5 \pi+14=37.55\ m$

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In a math class of 30 students, 17 are boys and 13 are girls. on a unit test, 4 boys and 5 girls made an a grade. if a student i

FromTheMoon [43]

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The probability of choosing a girl or A student is 17/30.

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3 years ago

I need help with the question below

Butoxors [25]

Answer:

a: 1/12

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Step-by-step explanation:

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3 years ago

Re-write the quadratic function below in Standard Form y = -(x – 3)2 +8

lisov135 [29]

Answer:

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Algebra I

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Step-by-step explanation:

Step 1: Define equation

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3 years ago

COMPLETE (s – r)(x) =

iren [92.7K]

Answer:

sx-rx

Step-by-step explanation:

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sx-rx

7 0

2 years ago

HELP PLEASE!!!!!!!!!!!!!!!!!!!!!

rewona [7]

Answer:

Considerations:

$$y=-(x) \left \{ {{\text{if } x0} \atop {{\text{if } x> 0\text{ then }y$

$y=x\left \{ {{\text{if } x0}} \right.$

Also,

$-\frac{a}{b}=\frac{-a}{b}=\frac{a}{-b}, b\neq0$

A positive number divided by a positive number results in a positive quotient, and its opposite is always negative.

The fraction $\frac{5}{-12}$ can be described as a positive number divided by a negative number, which always result in a negative quotient.

The fractions have same value, so Liam is correct.

7 0

3 years ago