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Masteriza [31]
3 years ago
11

Solve the proportional equation 2/3 = x/15

Mathematics
1 answer:
dimulka [17.4K]3 years ago
5 0
  2            x
 -----  =  ------
  3           15

cross multiply
(3)(x) = (15)(2)
3x = 30
x = 30/3
x = 10

so 2/3 = 10/15.......notice how these are equivalent fractions....that is because proportions are nothing but equivalent fractions
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Values of an expression
REY [17]
Substitute a number for each variable

Ex.
2x x=5
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6 0
4 years ago
1 What is the value of x in the equation 8x - 5(x - 1) = 20?
fiasKO [112]

Answer:

x = 5

Step-by-step explanation:

1. Expand

    8x - 5x + 5 = 20

2. Simplify

    3x + 5 = 20

3. Subtract 5 from both sides

    3x = 20 - 5

4. Simplify

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5. Divide both sides by 3

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6. Simplify

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8 0
3 years ago
The sum of two consecutive odd numbers is 284. Find each number please.
Vlad [161]
We can solve this by finding one of the numbers first
Let the smaller number be y. 
Since these 2 numbers are consecutive odd numbers, the larger number should be 2 more than the smaller one (y+2).

Therefore, 
y + (y+2) = 284
2y +2 = 284
shift +2 to the other side and turn it into -2
2y = 284 - 2
2y = 282
shift x2 to the other side and turn it into /2
y = 282/2
y = 141

Now we got the smaller number, which is 141, we can also find the larger number by adding 2 to it. 141+2 = 143, 
Therefore, your answer is 141 and 143

8 0
3 years ago
Read 2 more answers
What is the value of x? Enter your answer in the box. <br><br> x= ___cm
gogolik [260]

Answer:

x=5

Step-by-step explanation:

40/x=32/4

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160/32=32x/32

5=x


Hope this helps sweetie! ;)

3 0
4 years ago
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rewona [7]

Answer:

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Step-by-step explanation:

We are swamped with questions today so i will not be able to provide you with work. But I'm a college professor. Trust my answer.

Glad I was able to help!!

8 0
3 years ago
Read 2 more answers
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