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siniylev [52]
3 years ago
13

Which expression is equal to 7(1+3) ?7+217+31+217+4​

Mathematics
1 answer:
Marysya12 [62]3 years ago
8 0

The right answer is first option: 7+21

Step-by-step explanation:

Given expression is;

7(1+3)

In mathematics, the term outside is multiplied by each term inside the bracket, therefore, in this expression;

7(1+3)\\7*1+7*3\\7+21\\

The given expression 7(1+3) is equals to 7+21.

The right answer is first option: 7+21

Keywords: multiplication, addition

Learn more about addition at:

  • brainly.com/question/9527632
  • brainly.com/question/9533500

#LearnwithBrainly

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circular cardboard with an area between 154 in² and 616 in²

Radius is between 7 inches and 14 inches. ⇒ A) 7 < r < 14

√18 + √2 = √9 *2 + √2 = 3√2 + √2 = (3+1) √2  = 4√2

D) It is irrational and equal to 4 multiplied by the square root of 2.

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3 years ago
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Jack broke apart 5x216 as (5x200)+(5x16) to multiply mentally. What strategy did Jack use?
Sveta_85 [38]

For this case we have the following multiplication:

5 * 216

We can rewrite this multiplication in the following way:

5 * (200 + 16)

From here, we apply the distributive property.

We have then:

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Therefore, Jack's strategy is:

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Answer:

Jack's strategy is:

Write the number in an expanded form and then apply the distributive property.

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3 years ago
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\text{State Income Tax Rate: }6.65\%, \\\text{Deduction: }\$7,702.03

Answer:

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Step-by-step explanation:

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The chart given for state income tax is broken into two categories:

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Since the chosen career's salary is $115,820, the career falls into the second range of 6.65% state income tax.

The deduction is simply the amount of money taxed. For a 6.65% state income tax, the deduction can be found from:

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Answer:

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Step-by-step explanation:

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