2 years ago

A number is squared, then doubled and then 4 is subtracted. The result is the original number. What could the number be?

Mathematics

1 answer:

s344n2d4d5 [400]2 years ago

8 0

Answer:

umm its B cause i got it right hope this helped :)

Step-by-step explanation:

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(7^4)(7^2) = A) 7^6 B) 7^8 C) 14^6 D) 14^8

jonny [76]

Answer:

Step-by-step explanation:

using the rule of exponents

• $a^{m}$ × $a^{n}$ ⇔ $a^{(m+n)}$ , hence

$7^{4}$ × 7² = $7^{(4+2)}$ = $7^{6}$

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2 years ago

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Grace [21]

Answer:

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Step-by-step explanation:

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3 years ago

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Joan has raised $306 by selling 34 equally priced boxes of chocolate for the team fund-raiser. Which of the following equations

Elza [17]

Answer:

34n=306

Step-by-step explanation:

Use inverse operation to find it, 306÷34= 9, check again 34(9)=306, so it's correct!

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2 years ago

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There are 40 pupils in a class. 75% of them are present. How may are present? How many are absent?

Aleonysh [2.5K]

Answer:

30 are present 10 are absent

Step-by-step explanation:

75%=3/4

so 3/4 of them are absent

3/4(40)=30

and 40-30=10 are absent

8 0

2 years ago

∠A and ∠B are adjacent. The sum of their measures is 92∘. ∠A measures (2x+5)∘. ∠B is three times the size of ∠A.

Ilia_Sergeevich [38]

Answer:

Equation: 2x + 5 + 6x + 15 = 92

Solution: x = 9

m∠A =23° m∠B = 69°

Step-by-step explanation:

measure of ∠B = 3(2x + 5) = 6x + 15

The sum of the angles = 92 = 2x + 5 + 6x + 15

92 = 8x + 20

72 = 8x

x = 9

m∠A = 2(9) + 5 = 18 + 5 = 23

m∠B = 6(9) + 15 = 54 + 15 = 69

Check: 23 + 69 = 92 and 23(3) = 69

5 0

2 years ago