3 years ago

PLEASE HELP!! 50 POINTS!

Mathematics

1 answer:

olganol [36]3 years ago

3 0

18 vials are supposed to treat 250

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Which expression is equivalent to StartFraction 2 a + 1 Over 10 a minus 5 Endfraction divided by StartFraction 10 a Over 4 a squ

dimaraw [331]

For this case we must simplify the following expression:

$\frac {\frac {2a + 1} {10a-5}} {\frac {10a} {4a ^ 2-1}} =$

We apply double C:

$\frac {(4a ^ 2-1) (2a + 1)} {10a (10a-5)} =$

We apply distributive property in the numerator and we take common factor 5 in the denominator:

$\frac {8a ^ 3 + 4a ^ 2-2a-1} {10a (5 (2a-1))} =$

We factor the numerator:

$\frac {(2a + 1) ^ 2 (2a-1)} {10a (5 (2a-1))} =\\\frac {(2a + 1) ^ 2 (2a-1)} {50a (2a-1)} =$

We simplify:

$\frac {(2a + 1) ^ 2} {50a}$

Answer:

$\frac {(2a + 1) ^ 2} {50a}$

Option D

7 0

3 years ago

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The weekly salaries of six employees at a fast food franchise are $250, $120, $95, $160, $185, $225. For these six salaries, fin

Mashcka [7]

250+120+95+185+160+225= the mean

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3 years ago

Five times the sum of a number and 3 is 35. Find the number.

natta225 [31]

Answer:

Step-by-step explanation:

Let the required number be x.

Since, Five times the sum of a number and 3 is 35.

$5(x + 3) = 35 \\ \\ x + 3 = \frac{35}{5} \\ \\ x + 3 = 7 \\ \\ x = 7 - 3 \\ \\ x = 4$

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If r(x) = 2 – x2 and w(x) = x – 2, what is the range of (w*r)(x)

Ainat [17]

(-infinity and 0)

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3 years ago

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Please help. 40 points + brainliest

marusya05 [52]

Answer:

1) q = (sq rt 15 - 2) / 3

2) d = (sq rt 3 - 1) / 4

3) m = 15 * sq rt 3

Step-by-step explanation:

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3 years ago

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