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ludmilkaskok [199]
3 years ago
11

15=3(2x+4)-3 prove x=1

Mathematics
2 answers:
Leona [35]3 years ago
7 0

Answer:

see below

Step-by-step explanation:

15=3(2x+4)-3

Distribute

15 = 6x +12 - 3

Combine like terms

15= 6x +9

Subtract 9 from each side

15 -9 = 6x+9-9

6 = 6x

Divide each side by 6

6/6 = 6x/6

1 =x

kherson [118]3 years ago
4 0

Answer:

X=1

Step-by-step explanation:

6x+12-3=15

6x+9=15

6x+9-9=15-9

6x=6

X=1

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If the product of six tenths and three tenths is subtracted from the sum of two tenths and four tenths, what
MakcuM [25]

Answer:

-\frac{1}{200}

Step-by-step explanation:

\frac{6}{10}×\frac{3}{10}-\frac{2}{10}+\frac{4}{10}

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\frac{18}{100}-\frac{2}{10}=-\frac{1}{50}

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5 0
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A cell phone weighs about 2.8x 10pounds. Which value of n is most reasonable?
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Answer:

G, 113.04

Step-by-step explanation:

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π*r^2

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3 0
3 years ago
Read 2 more answers
Dilly is 7 years younger than Dally. In 4 years time she will be half Dally’s age. What is the sum of their ages now?
Step2247 [10]

Answer:

<u>The sum of their ages now is 13</u>

Step-by-step explanation:

Dally's age = x

Dilly's age = x - 7

In 4 years time Dilly will be half Dally’s age, therefore:

Dilly's age plus four equals to half of Dally’s age plus four,

replacing with the values and variables we know:

x - 7 + 4 = (x + 4) /2

x - 3 = (x + 4) /2

2x - 6 = x + 4 (Multiplying by 2 at both sides)

2x - x = 4 + 6 (Like terms)

x = 10 ⇒ x - 7 = 3

<u>The sum of their ages now is 13 (10 + 3)</u>

4 0
3 years ago
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