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4 years ago

I need help with both

Mathematics

2 answers:

NNADVOKAT [17]4 years ago

7 0

$Answer: \\ 1. \: \frac{x}{2} + 3 > 9\Leftrightarrow \frac{x}{2} > 6\Leftrightarrow x > 12 \\ 2. \: 4x + 5 \leqslant 13\Leftrightarrow 4x \leqslant 8\Leftrightarrow x \leqslant 2$

IceJOKER [234]4 years ago

6 0

1) x>12

2) x is less than or equal to 2

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Answer:

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Step-by-step explanation:

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3 years ago

The sum of the digits of a two-digit number is 8. The difference between the number and the reversed number is 10 more than the

Vesna [10]

Answer:

The number is 62

Step-by-step explanation:

Let the digits of the number be T and U;

A 2 digit number is represented as: 10T + U

So,

$T + U = 8$

$10T + U - (10U + T) = 10 + 10U + T$

Required

Find the digit

Make U the subject in the first equation

$U = 8 - T$

Substitute 8 - T for U in the second

$10T + U - (10U + T) = 10 + 10U + T$

$10T + 8 - T - (10*(8-T) + T) = 10 + 10(8 - T) + T$

$10T + 8 - T - (80-10T + T) = 10 + 80 - 10T+ T$

$10T + 8 - T -80+10T - T = 10 + 80 - 10T+ T$

Collect Like Terms

$10T + 10T - T- T + 8 -80 = 10 + 80 - 10T+ T$

$18T -72 = 90 - 9T$

$9T + 18T = 90 + 72$

$27T = 162$

$T = 162/27$

$T = 6$

Recall that:

$U = 8 - T$

$U = 8 - 6$

$U = 2$

<em>Hence, the number is 62</em>

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3 years ago

Yasmin took a survey of her classmates to determine the frequencies of different eye colors Yasmin surveyed a total of what clas

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Answer:

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Step-by-step explanation:

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4 years ago

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Answer:

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Step-by-step explanation:

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3 years ago

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3 years ago