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SVETLANKA909090 [29]
4 years ago
12

Solve 25+10*(12-x)=5*(2x-7)

Mathematics
1 answer:
lions [1.4K]4 years ago
4 0
<span>Simplifying 25 + 10(12 + -1x) = 5(2x + -7)
25 + (12 * 10 + -1x * 10) = 5(2x + -7)
25 + (120 + -10x) = 5(2x + -7)
 
Combine like terms: 25 + 120 = 145 145 + -10x = 5(2x + -7)
 
Reorder the terms:
145 + -10x = 5(-7 + 2x)
145 + -10x = (-7 * 5 + 2x * 5)
145 + -10x = (-35 + 10x)
 Solving 145 + -10x = -35 + 10x
 
Solving for variable 'x'.
 
Move all terms containing x to the left, all other terms to the right.
 
Add '-10x' to each side of the equation.
145 + -10x + -10x = -35 + 10x + -10x
 Combine like terms: -10x + -10x = -20x 145 + -20x = -35 + 10x + -10x
 
Combine like terms: 10x + -10x = 0 145 + -20x = -35 + 0 145 + -20x = -35
 Add '-145' to each side of the equation. 145 + -145 + -20x = -35 + -145

Combine like terms: 145 + -145 = 0 0 + -20x = -35 + -145 -20x = -35 + -145

Combine like terms: -35 + -145 = -180 -20x = -180
  Divide each side by '-20'.
x = 9
 Simplifying x = 9.
Hope this helps you ! =')</span>
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A bowl contains candies of the same size in three flavors: orange, strawberry, and pineapple. If the probability of randomly pul
andre [41]
The pro<span>bability of randomly pulling out a pineapple candy would be 5 over 8. Because there are 8 candies total (this is the denominator) and only 3 flavors, you just simply add the two given candies, which is 2 + 1 = 3, and subtract the sum (which is 3) by 8. Therefore, 8 - 3 = 5 and you put that as the numerator and the total number of candies, 8, as the denominator. </span>
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Read 2 more answers
a submarine travels 90 kilometers in 4 hours find the submarines rate of speed in kilometers per hour
defon

Answer:

22.5

Step-by-step explanation:

To find the rate of speed per hour, you need to divide the kilometer (90) by the hours (4).

90/4=

22.5

6 0
3 years ago
9,3,1, what is the sequence and what is it equal to?
Thepotemich [5.8K]

Answer: the sequence is to divide by 3 and it gets smaller and smaller by dividing by three I don't think there is an end to it.

Step-by-step explanation:

9/3=3

3/3=1

1/3=1/3

1/3/3=1/9

1/9/3=1/27

1/27/3=1/81

and I think you know what I mean by now right?

3 0
3 years ago
HELP QUICK PLEASE!!!
ehidna [41]

Answer:

b=19\ ounces

Step-by-step explanation:

<u>System Of Equations </u>

We know the scale shows a false reading for the weights by a constant value. Let's call e the weight it adds or subtracts from the real weight it measures.  

When the box is put on the scale, the real weight is b, but the scale shows

b+e=15

When the bag is weighted, the real value is g, but the scale shows

g+e=12

Finally, when both are measures, the real weight is b+g and the scale shows

b+g+e=31

We have formed a system of equations. It's easy to find the value of b, we just need to subtract the last two equations

b+g+e-g-e=31-12

\boxed{b=19\ ounces}

4 0
4 years ago
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