3 years ago

Pls help me. i'm so sorry:( this is the last question

Mathematics

1 answer:

agasfer [191]3 years ago

7 0

Answer:

7.2 X 2000 = 14400 pounds

5/8 = 0.625, 0.625 X 2000 = 1250 pounds

14400 + 1250 + 8500 = 24150 pounds

24150/2000 = 12.08 tons

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Which equation represents the total cost, y, for x hours of student ski lessons?

Mice21 [21]

SUP THANKS FOR THE POINTS

5 0

4 years ago

I know it’s not -2 please help!!

hjlf

Answer:

$\boxed { - 4}$

Step-by-step explanation:

Substitute y = x-4 in the first equation.

$3x - 2(x - 4) = 4$

Distribute -2 in the expression.

$3x - 2x + 8 = 4 \\ x = 4 - 8 \\ x = - 4$

Because we only want to find the value of x.

Therefore the answer is -4.

8 0

3 years ago

Please answer & help me !! will mark brainliest and reward points !!

Lynna [10]

Answer:

$\frac{1 + \frac{a}{b} }{1 - \frac{ {a}^{2} }{ {b}^{2} } } \\\\ = \frac{ \frac{b + a}{b} }{ \frac{ {b}^{2} - {a}^{2} }{ {b}^{2} } } \\\\= \frac{b + a}{b} \times \frac{ {b}^{2} }{{b}^{2} - {a}^{2} } \\ \\ = \frac{b + a}{b} \times \frac{ {b}^{2} }{(b + a) (b - a)} \\ \\ = \frac{b}{b - a}$