7n-22 is more than or equal to 64 what is n

1 answer:

8 0

7n-22 ≥ 64

1. Move constant to the right.

7n ≥ 64 + 22

2. Combine like terms.

7n ≥ 86

3. Divide 7n by 7 to get n alone.

n ≥ 86

4. Divide 86 by 7.

n ≥ 86 / 7 OR n ≥ 12.29

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Reduce to simplest form.

BigorU [14]

Convert 3 6/2 to an improper fraction so: 12/2
convert 2 4/5 to 14/5
multiply the numerators of the improper fractions so 12*14, which is 168.
multiple the denominators so 2*5, which is 10.
the new fraction is 168/10, so you divide 168 divided by 10, which is 16.8, or 16 4/5.

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padilas [110]

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Answer:

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Step-by-step explanation:

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the length of a rectangle is five feet less than its width. If the area of the rectangle is 84 square feet, find its dimensions

KIM [24]

Let
x---------> the length of the rectangle
y--------> the width of the rectangle

we know that
A=84 ft²
[area of rectangle]=x*y-----> 84=x*y-----> equation 1
x=y-5------> equation 2
substitute 2 in 1
84=[y-5]*y-----> 84=y²-5y---------> y²-5y-84=0

using a graph tool-----> to resolve the second order equation
see the attached figure

the solution is
y=12
x=y-5-----> x=12-5-----> x=7

the answer is
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Marina CMI [18]

Answer: 72

Step-by-step explanation: Its in the middle

4 0

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