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3 years ago

15

(7th grade math question)

2 answers:

kirill115 [55]3 years ago

6 0

Answer:

It’s B

Step-by-step explanation:

kakasveta [241]3 years ago

5 0

It's B<em> I think. I might have done it wrong. But I pretty sure it's B</em>

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Find The art length of a sector with an area of 8 square units.

frez [133]

$\bf \textit{area of a sector of a circle}\\\\
A=\cfrac{\theta \pi r^2}{360}\quad 
\begin{cases}
r=radius\\
\theta =angle~in\\
\qquad degrees\\
------\\
A=8\\
r=4
\end{cases}\implies 8=\cfrac{\theta \pi 4^2}{360}\implies \cfrac{8\cdot 360}{4^2\pi }=\theta 
\\\\\\
\cfrac{2880}{16\pi }=\theta \implies \boxed{\cfrac{180}{\pi }=\theta }\\\\
-------------------------------\\\\$

$\bf \textit{arc's length}\\\\
s=\cfrac{\theta \pi r}{180}\quad 
\begin{cases}
r=radius\\
\theta =angle~in\\
\qquad degrees\\
------\\
\theta =\frac{180}{\pi }\\
r=4
\end{cases}\implies s=\cfrac{\frac{180}{\underline{\pi} }\underline{\pi} \cdot 4}{180}\implies s=\cfrac{\underline{180}\cdot 4}{\underline{180}}
\\\\\\
\boxed{s=4}$

if you do a quick calculation on what that angle is, you'll notice that it is exactly 1 radian, and an angle of 1 radian, has an arc that is the same length as its radius.

that's pretty much what one-radian stands for, an angle, whose arc is the same length as its radius.

6 0

3 years ago

1. The image below represents the dimensions of

andreyandreev [35.5K]

Answer:

V plus 5 is four

Step-by-step explanation:

dimensions of

Mike's Bike ramp in feet. How far does Mike have to

ride to reach the end of his ramp? Give the exact

distance.

V

5

10

SIMPLIFY THE RADICAL.

Hold on, our servers are swamped. Wait for your answer to fully load. dimensions of

Mike's Bike ramp in feet. How far does Mike have to

ride to reach the end of his ramp? Give the exact

distance.

V

5

10

SIMPLIFY THE RADICAL.

Hold on, our servers are swamped. Wait for your answer to fully load. dimensions of

Mike's Bike ramp in feet. How far does Mike have to

ride to reach the end of his ramp? Give the exact

distance.

V

5

10

SIMPLIFY THE RADICAL.

Hold on, our servers are swamped. Wait for your answer to fully load. dimensions of

Mike's Bike ramp in feet. How far does Mike have to

ride to reach the end of his ramp? Give the exact

distance.

V

5

10

SIMPLIFY THE RADICAL.

Hold on, our servers are swamped. Wait for your answer to fully load. dimensions of

Mike's Bike ramp in feet. How far does Mike have to

ride to reach the end of his ramp? Give the exact

distance.

V

5

10

SIMPLIFY THE RADICAL.

Hold on, our servers are swamped. Wait for your answer to fully load. dimensions of

Mike's Bike ramp in feet. How far does Mike have to

ride to reach the end of his ramp? Give the exact

distance.

V

5

10

SIMPLIFY THE RADICAL.

Hold on, our servers are swamped. Wait for your answer to fully load. dimensions of

Mike's Bike ramp in feet. How far does Mike have to

ride to reach the end of his ramp? Give the exact

distance.

V

5

10

SIMPLIFY THE RADICAL.

Hold on, our servers are swamped. Wait for your answer to fully load. dimensions of

Mike's Bike ramp in feet. How far does Mike have to

ride to reach the end of his ramp? Give the exact

distance.

V

5

10

SIMPLIFY THE RADICAL.

Hold on, our servers are swamped. Wait for your answer to fully load.

8 0

3 years ago

Emily wants to watch her intake of fat per day.

AfilCa [17]

Answer:

One variable equation that is (4800/x) represents percentage of Emily's dinner fat intake compared to total daily allowance of x gram.

Step-by-step explanation:

lets assume the variable for total daily allowance

lets say total daily allowance of fat = x grams

Fat consumed at dinner = 48 grams

Fat consumed at dinner in percentage = (Fat consumed at dinner/total daily allowance of fat) × 100

= (48 grams/x grams)×100=(4800/x)%

so (4800/x)%

So one variable equation that is (4800/x) represents percentage of Emily's dinner fat intake compared to total daily allowance of x gram.

lets take one example

lets says total daily allowance of fat for Emily = 100gm

so from derived equation that is 4800/x , we can get required percentage by putting x = total daily allowance of fat = 100gm

=4800/100 = 48%.

you can change value of variable x according to total daily allowance and get the required dinner intake percentage by equation 4800/x.

6 0

3 years ago

Wats 200 + 142<br><br><br> Only genius can answer this!!! <br><br> Lol

attashe74 [19]

Answer:

342

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

Tuition is $29,637. increase is 5.1%. what is new cost?

Veseljchak [2.6K]

Answer:

31,148.48

Step-by-step explanation:

29,637*.051= 1,511.48

29,637+1,511.48=31,148.48

6 0

3 years ago