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3 years ago

Explain how to isolate the variable in the equation -2/3n + 7 = 15

Mathematics

1 answer:

vodka [1.7K]3 years ago

7 0

Answer:

n = -12

Step-by-step explanation:

(-2/3)n + 7 = 15

(-2/3)n+7-7 = 15-7 Subtract by 7 on both sides

(-2/3)n = 8 Multiply by the reciprocal of the fraction, which is

(-2/3)n*(-3/2) = 8(-3/2) This makes it so you get n *1 and isolates n.

n = -24/2 = -12

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A high jumper starts the bar at 48 inches and raises the bar 1/2 inch after each jump.How high will the bar be after the seventh

VARVARA [1.3K]

Answer:

51.5 in , Formula: y=1/2x+48

Step-by-step explanation:

First, create a formula as shown above

Next, plug your number into the formula:

y=1/2(7)+48

Then, simplify your equation by multiplying 1/2 by 7 and getting 3.5, now add 48 and you get 51.5in

Last, check your work by adding 1/2 seven times and you will get the same result

I hope this helps you and if it does please give a thanks (i would eternally appreciate a brainliest trying t level up)

If i am wrong leave a comment

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3 years ago

9n - 16 -1 + 3n Pls help

Jlenok [28]

Answer:

17/12

Step-by-step explanation:

12n-17=0

12n=17

n=17/12

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3 years ago

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Ira Lisetskai [31]

Answer:

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Step-by-step explanation:

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4 years ago

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4vir4ik [10]

Answer:

5.5; 11.00; 16.50

$E = 5.5h$

Step-by-step explanation:

Given

The attached table

Solving (a): Complete the table

First, calculate the slope (m)

$m = \frac{E_2 - E_1}{h_2 - h_1}$

So:

$m = \frac{27.5- 22.00}{5-4}$

$m = \frac{5.50}{1}$

$m = 5.50$

So, the equation of the table is:

$E = m(h - h_1) + E_1$

$E = 5.5(h - 4) + 22$

$E = 5.5h - 22 + 22$

$E = 5.5h$

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3 years ago

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3 years ago

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