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3 years ago

Please help! Will mark brainliest

Mathematics

1 answer:

kobusy [5.1K]3 years ago

7 0

Answer:

B. 15"

Step-by-step explanation:

$a^{2}+b^2=c^2\\9^2+12^2=c^2\\81+144=c^2\\225=c^2\\\sqrt{225} = 15$

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Evaluate the expression for the given value of x 3x-4;x=7

spin [16.1K]

Answer:

Answer = 17

Step-by-step explanation:

3x - 4

3(7) - 4

21 - 4

Hope this helps!

8 0

3 years ago

How to round 94000.00 two decimal places

swat32

Answer:

94000.00 is already in two decimal places.

Step-by-step explanation:

Every number after the decimal point represent a place in decimal.

One Decimal place = .0

Two Decimal place = .00

Three Decimal place = .000

Four Decimal place = .0000

3 0

3 years ago

Someone help me with this please ASAP thank you

Blizzard [7]

Answer: B. 20

Step-by-step explanation: 1/5 of 25 is 5 and 5 of those are red so 25-5=20

6 0

3 years ago

Read 2 more answers

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

the logarmithmic functions, f(x)=logx and g(x), are shown on the graph. what is the equation that represents g(x)? explain.

mestny [16]

Answer:

g(x) = log(x+1) + 4

Step-by-step explanation:

If a curve has been translated (shifted or slid) you can add to or subtract from the x to show horizontal (left or right) shifts and add or subtract a number tacked onto the end of the equation to cause the vertical shift (up or down).

The curve for g(x) is shifted left 1 unit. So change the x to x+1. Left and right shifts are a little backwards from what you might think. But left shift is a +1.

Vertical shifts adjust the way you would think they should. UP shift 4 units is a +4 on the end of the equation. See image.

6 0

2 years ago