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andrezito [222]
3 years ago
14

HELP PLEASEEE!!!!! SCHOOL START TOMORROW. NUMBER 21 and 22 ONLY

Mathematics
1 answer:
Snezhnost [94]3 years ago
4 0

Answer:

21. \sqrt{\frac{-s}{15} }

22. 87.92

Step-by-step explanation:

21. The quotient means division is going to happen between -s and 15.  And then take the square root of that.

\sqrt{\frac{-s}{15} }

22. The equation for the volume of a cylinder is this:

\pi r^{2} h

The question gives you values for r, and h, so just substitute those values into the equation.

Here is the work:

\pi r^{2} h\\\\=\pi 2^{2} (7)\\\\=\pi(4)(7)\\\\=\pi (28)

They told us to use 3.14 for pi, so i will substitute pi with 3.14

\pi (28)\\\\=3.14(28)\\\\=87.92

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While shopping at a clearance sale, Samantha finds a $60.00 dress on sale for 25% off. Samantha also has a 50% off coupon. Which
disa [49]

Answer:

Samantha will save $37.50 because she must first find the 25% sale price before taking the extra 50% reduction

Step-by-step explanation:

I got it right :)

4 0
3 years ago
What is the length of AB with endpoints A (-1,0) and B (4,-3)
stepladder [879]

Answer:

√34

Step-by-step explanation:

it would be radical 34.

8 0
1 year ago
Plsss helpppp what’s the shape?
Alborosie
The shape shown here is a triangular pyramid, because it has a triangular base and a pointy tip.
4 0
3 years ago
Which of the following are solutions to the inequality -7x+14>-3x-6? Select all that apply.
JulijaS [17]

-7x+14>-3x-6

add 7x to each side

14> 4x-6

add 6 to each side

20>4x

divide by 4

5>x

x<5

solutions

3,0,-3,-5,-10

6 0
3 years ago
Read 2 more answers
Solve for x<br> Urgent need help
fiasKO [112]
I believe you need to solve this using the quadratic formula!
To begin, this is what it is:
x= -b ± <span>√ b^2 - 4ac / 2a
Just plug in what you have in your problem...
2 being a, 13 being b, and -24 being c.
So we get:
x= -13 </span>± <span>√13^2 - 4(2)(-24) / 2(2)
x= -13 </span><span>± √169 - 8 (-24) / 4</span>
<span>x= -13 <span>± √169 + 192 / 4</span>
x= -13 </span>± √<span>361 / 4
The square root of 361 is 19.
So you have: -13 </span><span>± 19 / 4.
Here's where you take the equation </span>-13 <span>± 19 and put the addition and subtraction sign to use.
-13 - 19 = -32
and
-13 + 19 = 6
Now all is left to do is divide the two numbers by 4.
-32/4 = -8
and
6/4 = 3/2

x = -8, 3/2</span>
6 0
4 years ago
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