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NeX [460]
3 years ago
7

20(20-x)=300 what is x

Mathematics
1 answer:
neonofarm [45]3 years ago
5 0

Answer:

x = 5

Step-by-step explanation:

20(20-x)=300

1. Divide both sides by 20.

20(20-x)/20 = 300/20

2. Simplify.

20-x=15

3. Subtract 20 from both sides.

20-x-29=15-20

4. Simplify.

-x=-5

5. Divide both sides by -1.

-x/-1 = -5/-1

6. Simplify.

x=5

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Can someone put a website to help me understand this?
Alenkinab [10]

Answer:

67

Step-by-step explanation:

Since the diagonals in a rectangle are congruent, AC=BD and

7x+18=10x-3

We need to separate x -- to do that, we can first subtract 7x from both sides, resulting in

18=3x-3

Next, add 3 to both sides to get

21=3x

Divide both sides by 3 to get

x=7

Then, we just plug x into 10x-3 to get BD = 7*10-3 = 67

7 0
3 years ago
A manufacturer of potato chips would like to know whether its bag filling machine works correctly at the 410 gram setting. It is
Delvig [45]

Answer:

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6 0
3 years ago
What measure is equivalent to 65 killograms?
Nataly [62]

Answer:

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7 0
3 years ago
It will take Mr. warner 15 1/2 hours to install a fence. Each day he works 1 1/3 hours on the fence. After he finished working o
zmey [24]
15.5-3.5=12. this is how many hours he has worked already.

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the answer is 9 days.

12hours * 1day/1⅓ hours
^^ignore that if it doesn't make sense, but basically the hours will cancel and you'd be left with days as your only unit to show why you would divide 12 by 1⅓


hope this helped!
8 0
3 years ago
Root 8-3 root 32 + 4 root 50 ​
Bess [88]

Answer:

10\sqrt{2}

Step-by-step explanation:

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We can try to simplify first.

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Now we can combine the like terms:

= 10\sqrt{2}

hope this helped! :)

3 0
2 years ago
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