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kotykmax [81]
3 years ago
12

-9x + 15 > -30 ? And a explanation

Mathematics
1 answer:
BabaBlast [244]3 years ago
5 0

Answer:

x < 5

Step-by-step explanation:

<u>Step 1:  Subtract 15 from both sides </u>

-9x + 15 - 15 > -30 - 15

-9x > -45

<u>Step 2:  Divide both sides by -9 </u>

-9x / -9 > -45 / -9

Since you divided by a negative, you must flip the sign.

-9x / -9 > -45 / -9

x < 5

Answer:  x < 5

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Tom and some friends went to a movie. The show started at 2:30 P.M. and ended at 4:15 P.M. How long did the movie last?
dsp73
The movie would be 1 hour 45 minutes long
5 0
3 years ago
PLEASEEEE HELPPPP!!!!:(((((:(:(
Paladinen [302]

Answer: x=3, p/2,-p/2

Step-by-step explanation:

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4 0
3 years ago
The volume of the shape below is 6 square units. Determine the volume of the shape in two different ways.
REY [17]

The volume of the shape is 6 cubic units

<h3>How to determine the volume of the shape?</h3>

<u>Method 1</u>

From the figure, we can see that:

  • There are 6 cubes in the figure
  • The dimensions of the cubes are equal
  • The volume of each cube is 1 cubic unit

So, the volume of the shape is

Volume = Number of cubes * Volume of each cube

Substitute the known values in the above equation

Volume = 6 * 1

Evaluate

Volume = 6

<u>Method 2</u>

From the figure, we can see that:

  • There are 6 cubes in the figure
  • 2 cubes at the top and 4 at the bottom
  • The dimensions of the cubes are equal
  • The volume of each cube is 1 cubic unit

So, the volume of the shape is

Volume = Top cubes +  Bottom cubes

This gives

Volume = 2 * Volume of each cube + 4 * Volume of each cube

Substitute the known values in the above equation

Volume = 2 * 1 + 4 * 1

Evaluate

Volume = 6

Hence, the volume of the shape is 6 cubic units

Read more about volumes at:

brainly.com/question/1972490

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5 0
2 years ago
The area of a rectangle is 84 square inches. the length of the rectangle is 2 longer than twice the width. find the width and th
IgorC [24]
Let l = the lentth of the rectangle and w = the width of the rectangle; where w>0 and l>0;
We have 84 = l x w and l = 2 + w;
84 = (2+w) x w;
We solve the equation: w^2 + 2w - 84 = 0;
We obtain the solution w = 8.21;
The perimeter of the triangle is  is 3 x 8.21 = 24.63;



8 0
3 years ago
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