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3 years ago

How to work this problem 5(m-1)= -25

1 answer:

3 0

5 (m - 1) = -25 Use the Distributive Property
5m - 5 = -25 Add 5 to both sides
5m = -20 Divide both sides by 5
m = -4

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natima [27]

Answer:

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Step-by-step explanation:

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3 years ago

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What is the net percent gained or lost on a stock with goes up 30% on monday and then drops 30% on tuesday? use a negative sign

dimaraw [331]

Answer:

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2 years ago

The first number plus the second number equals 83, the first number

timama [110]

Answer:

I hope this helps

Step-by-step explanation:

So the way to handle a problem like this is to rewrite the three numbers in terms of their relationship to one of the three numbers. Let's call the numbers x, y, and z, where x is the first number, y is the second, and z is the third.

We know x + y + z = 83.

Since the third number is twice the second, we say that z = 2y.

Since the second number is seven less than the first, we say that y = x - 7. We can rewrite this as x = y + 7.

Now all three can be written in terms of y.

x + y + z = 83

(y + 7) + y + 2y = 83

4y + 7 = 83

4y = 76

y = 19

The second number is 19. The first is 19 + 7 or 26, and the third is 2 times 19 or 38.

A check reveals that 26 + 19 + 38 = 83.

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3 years ago

A model rocket is launched from the top of a building. The height (in meters) of the rocket above the grown is given by h(t)=-6t

Iteru [2.4K]

Answer:

47.5 Meters

Step-by-step explanation:

Find where the derivative changes from positive to negative (local maximum)

h(t)= $-6t^2+30t+10$

h'(t)= $-12t+30$

Find where the derivative equals zero

Theres no spot where the derivative wont exist because its a polynomial.

-12t=-30

t= $\frac{5}{2}$

Ill stop here because this is a parabola opening down and this is the only spot where there will be a horizontal tangent line so this is the x-coordinate of the vertex. AKA you don't need to test positive and negative on both sides.

Now plug into original equation

h(2.5)= $-6(2.5)^2+30(2.5)+10$