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2 years ago

13

The expression twice the product of 3 and x is the same as which of the following? 2 + (3x) (2 + 3x 2(3x) 2(3 + x)

2 answers:

frutty [35]2 years ago

5 0

Answer: 2(3x)

Step-by-step explanation: double the product of two numbers is always 2(x + x) and when one is unknown you use x as stated and 3 plus x is 3 +x so the answer is 2(3 + x)

kvv77 [185]2 years ago

3 0

Answer:

All of these can be captured by the algebraic statement 3x + 2x = 5x, for any number of x. The product of 3 and x; x is multiplied by 3, or 3 is multiplied by x. 2 terms are called like terms if they involve exactly the same pronumerals and each term. The terms 3x and 3x2 are not like terms because the indices are different.

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Anarel [89]

Connor has 14 quarters and 28 dimes.

Step-by-step explanation:

Given,

Worth of coins = $6.30 = 6.30*100 = 630 cents

We know that,

1 quarter = 25 cents

1 dime = 10 cents

Let,

Quarter = x

Dime = y

According to given statement;

25x+10y=630 Eqn 1

The number of dimes is 14 more than the number of quarters

y = x+14 Eqn 2

Putting value of y from Eqn 2 in Eqn 1

$25x+10(x+14)=630\\25x+10x+140=630\\35x=630-140\\35x=490$

Dividing both sides by 35

$\frac{35x}{35}=\frac{490}{35}\\x=14$

Putting x=14 in Eqn 2

$y=14+14\\y=28$

Connor has 14 quarters and 28 dimes.

Keywords: linear equation, substitution method

Learn more about substitution method at:

#LearnwithBrainly

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PolarNik [594]

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Step-by-step explanation:

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Answer:

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