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3 years ago

13

What is (+12) – (-8)?

2 answers:

Mandarinka [93]3 years ago

4 0

Answer:

${\huge\red{\fbox{{࿐αɴѕωєя࿐}}}}$

$( + 12) - ( - 8) \\ = 12 + 8 \\ = + 20$

${\boxed{\boxed{\tt { Note :-}}}} \$

$- + - = +$

Sergio [31]3 years ago

3 0

Answer:

+12+8＝+20

Step-by-step explanation:

Hope it helps you!

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Compare the two groups of data. Which statement is true?

kati45 [8]

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3 years ago

Jamie is buying 5 concert tickets, and he wants his total cost to be no more than $4 Above or below $80. Which inequality models

kumpel [21]

Answer:

Option C $\left|80-5x\right|\le 4$

Step-by-step explanation:

Let

x ----> the cost of the concert ticket

we know that

The total cost to be no more than $4 Above $80

so

$5x\leq 80+4$

Solve for x

$x\leq \$16.80$

The total cost to be no more than $4 below $80

so

$5x\geq 80-4$

Solve for x

$5x\geq 76$

$x\geq \$15.2$

therefore

The inequality that represent this problem is

$\left|5x-80\right|\le 4$

<u><em>Verify</em></u>

<em>First solution (positive case</em>)

$+(5x-80)\le 4$

$5x\le 80+4$

Solve for x

$x\leq \$16.80$ ----> is ok

<em>Second solution (negative case)</em>

$-(5x-80)\le 4$

Multiply by -1 both sides

$(5x-80)\ge -4$

$5x\geq 80-4$

Solve for x

$5x\geq 76$

$x\geq \$15.2$ ---> is ok

Remember that

$\left|5x-80\right|\le 4$ is equivalent to $\left|80-5x\right|\le 4$

Because is a absolute value

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3 years ago

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Lina20 [59]

Answer:

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Step-by-step explanation:

7^2=49

49+4=53

6^2=36

53+36=89

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Step-by-step explanation:

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