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kogti [31]
3 years ago
12

7th grade math help me pleaseeee

Mathematics
2 answers:
Rainbow [258]3 years ago
7 0

Step-by-step explanation:

volume of cylinder = πr²h

  • 22/7×4²×15. {radius (r)=diameter/2)
  • 754in³

its yr ans.

hope it helps

<h2>stay safe healthy and happy.</h2>
Arisa [49]3 years ago
5 0

Answer:

option 2 : 754 in³

Step-by-step explanation:

diameter = 8 => radius, r = 4 inches , h = 15 inches

volume = \pi r^2 h

          =\pi \times 4^2 \times 15 \\\\=753.9 \ in^3\\\\= 754 \ in^3

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If y varies directly as​ x, and y=8 when x=3​, find y when x=15.
Crank

Answer:

y=40

Step-by-step explanation:

The formula for Direct Variation is y=kx or k=y/x. In this case I would use k=y/x. If you're y is 8 and x is 3, this means that K=8/3. Using this, we know that X=15. We have to find a Y value so that the fraction with an x of 15 simplified is 8/3. To do this you would write 8/3 and y/15. Now cross multiply to get 3y=120. Divide by 3 to get y=40. View my attachment for the work!

8 0
4 years ago
Can somebody answer and explain?<br> ( brainliest )
svlad2 [7]
A: 6/8, 9/12, 12/16
b: 6/14, 9/21, 12/28
c: 6/9, 2/3, 4/6
d: 1/4, 2/8, 2/12

In order to find equivalent fractions for a fraction is multiply or divide the numerator and denominator by the same number.

For example, 3/4=6/8 because 3x2=6 and 4x2=8, 6/8.

Hope this helps!
8 0
2 years ago
Read 2 more answers
I don’t understand this
Oxana [17]

You have to multiply whats outside the parenthesis with everything that is inside, so

x^{-3}y^0.(x^2-3x^5y^4)

x^{-3}y^0.x^2-x^{-3}y^0.3x^5y^4

Multiplication of same bases we sum the exponents

x^{-3+2}y^0-3x^{-3+5}y^{0+4}

x^{-1}.1-3x^2y^4

x^{-1}-3x^2y^4

Alternative B.

7 0
3 years ago
One acute angle of a right triangle is 12 degrees more than twice the other acute angle. Fine the acute angles of the right tria
Svetlanka [38]
Let one acute angle be X and one be Y
X+Y=90  -------Eq.1
2X+12=Y
2X-Y=-12------Eq.2
solving eq 1&2 we get,
3x=78
∴X=26
substituting value X in equation.1
X+Y=90
Y=90-26
∴Y=64
⇒answer:- X=26°
                   Y=64°


8 0
3 years ago
How to put y =2x+1 on a table
valentina_108 [34]

Answer:

I put the table below

Step-by-step explanation:

Find x and y values for the equation.

Put these values into a table

If this answer helps, please make me Brainliest!

7 0
3 years ago
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