3 years ago

12c3d2 21ab 14a2b 8c2d

Mathematics

1 answer:

AfilCa [17]3 years ago

8 0

what are you trying to do with this set of numbers + letters?

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Mika jumped rope for 55 minutes and burned 98 calories. How many calories could she burn in 15 minutes

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Answer: Mika burned 26.7 calories in 15 minutes

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3 years ago

Which ratio is equivalent to 9:180

Mamont248 [21]

Step-by-step explanation:

B 12:240

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4 years ago

Determine whether the function is even, odd, or neither. Then determine whether the function's graph is symmetric with respect

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3 years ago

5x + 2y=7<br> - 2x + 6y=9

ollegr [7]

Answer:

x = $\frac{12}{17}$ or 0.706

$y = \frac{59}{34}$ or 1.735

Step-by-step explanation:

5x + 2y=7 ----->(eq 1)

- 2x + 6y=9 ----->(eq 2)

Multiply (eq 1) with 3

3×(5x + 2y) = 3×7

15x + 6y = 21 ----->(eq 3)

substract (eq 3) from (eq 2)

- 2x + 6y - (15x + 6y) = 9-21

- 2x + 6y - 15x - 6y = 9-21

- 2x - 15x + 6y - 6y = 9-21

-17x = -12

x = -12 ÷ -17

x = $\frac{12}{17}$

put x = $\frac{12}{17}$ in (eq 1)

$5*\frac{12}{17} + 2y = 7$

$2y = 7- 5*\frac{12}{17}$

$2y = \frac{7*17 - 60}{17}$

$2y = \frac{119- 60}{17}$

$2y = \frac{59}{17}$

$y = \frac{59}{17*2}$

$y = \frac{59}{34}$

6 0

4 years ago