4 years ago

-2(-4y+2×-3) I need help with this equation.....

Mathematics

1 answer:

bazaltina [42]4 years ago

4 0

Answer:

8y+12

Step-by-step explanation:

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What angle of inclination (to the nearest whole degree) does a stairway make with the floor if the steps have a tread of 11 inch

faltersainse [42]

tan x = opposite / adjacent
tan x = 6 / 11
tan x = 6 / 11
x = 28.61 (or 29 degrees rounding to the nearest whole degree)

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4 years ago

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Solve 4x- c= k for x.<br> A. x = 4(k - c)<br> O B. x = 4(k+ c)<br> O C. x-***<br> O D. x-**

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Answer:

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3 years ago

8x-4=2(4x-4) math question

EleoNora [17]

Answer:

No solution.

Step-by-step explanation:

8x - 4 = 2(4x - 4)

8x - 4 = 8x - 8

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-4 ≠ -8

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3 years ago

A cylinder with a height of 8 cm has a volume of 2887 cm. What is the radius of the cylinder? (The volume of a

vesna_86 [32]

Answer:

The radius will be 10.72 cm

Step-by-step explanation:

Hope this helps

4 0

3 years ago

Which of the following is a solution of x² - 7x = -5?

lesya [120]

$\frac{7 - \sqrt{} 29} {2}$

$x {}^{2} - 7x = - 5 \\ x {}^{2} - 7x - ( - 5) = - 5 - ( - 5) \\ x {}^{2} - 7x( - 5) = 0 \\ x {}^{2} - 7x + 5 = 0 \\ x = \frac{ - ( - 7 + \sqrt{( - 7 {) }^{2} - 4 \times 5} }{2} \\ x = \frac{ - ( - 7 + \sqrt{49 - 4 \times 5} }{2} \\ x = \frac{ - ( - 7) + \sqrt{49 \times 20} }{2} \\ x = \frac{ - ( - 7) \sqrt{29} }{2} \\ x = \frac{7 + \sqrt{29} }{2} \\ \frac{ \sqrt{29 + 7} }{2} \\ x = \frac{7 - \sqrt{29} }{2} \\ x = \frac{ \sqrt{29 + 7} }{2} \\ x = \frac{7 - \sqrt{29} }{2}$

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3 years ago