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Pavlova-9 [17]
3 years ago
5

Solve for m 5(m+4)=2m+20

Mathematics
2 answers:
olga55 [171]3 years ago
6 0
Distribute 5 to all monomials inside the parenthesis

5(m + 4) = 5m + 20

5m + 20 = 2m + 20

Isolate the m, subtract 2m from both sides, and 20 from both sides

5m (-2m) + 20 (-20) = 2m (-2m) + 20 (-20)

5m - 2m = 20 - 20

Simplify

3m = 0

isolate the m, divide 3 from both sides

3m/3 = 0/3

m = 0/3

m = 0

hope this helps
kvasek [131]3 years ago
5 0
We can solve this equation by using the distributive property to open up 5(m+4), and then getting m on one side and the constants on the other and then solving for m. Doing this gives us:

5m+20=2m+20 Now we get m on one side
3m=0 Divide each side by 3
m=0 The answer 
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(CO 3) A survey indicates that shoppers spend an average of 22 minutes with a standard deviation of 8 minutes in your store and
padilas [110]

Answer: 0.60

Step-by-step explanation:

Given: Mean : \mu = 22\text{ minutes}

Standard deviation : \sigma = 8\text{ minutes}

The formula to calculate z is given by :-

z=\dfrac{x-\mu}{\sigma}

For x= 20 minutes

z=\dfrac{22-20}{8}=0.25

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4 years ago
How many 1 degree are in 4/360 of a circle
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4 degrees.

Step-by-step explanation:

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8 0
3 years ago
Please show your work and I will make you brainliest ​
klio [65]

Answer:

17. y=1/2x+5

18. y=-2x+15

19. y=2x-7

Step-by-step explanation:

Number 17.

(4,7); parallel to y=1/2x-1

You know that lines that are parallel to each other have the same slope, so the slope is 1/2x.

1. Use the point-slope formula to solve for the slope-intercept equation.

y-y1=m(x-x1)

m= 1/2

x= 4

y= 7

y-7= 1/2(x-4)

y-7= 1/2x-2

y=1/2x+5

Number 18.

(4,7); perpendicular to y=1/2x-1

You know that lines that are perpendicular to each other have the opposite reciprocal slope, so the slope is -2.

1. Use the point-slope formula to solve for the slope-intercept equation.

y-y1=m(x-x1)

m= -2

x= 4

y= 7

y-7=-2(x-4)

y-7=-2x+8

y=-2x+15

Number 19.

f(3)=-1

f(4)=1

To write a linear equation, first find the slope with the slope formula.

x1= 3

y1= -1

x2= 4

y2=1

(y2-y1)/(x2-x1)

(1-(-1))/(4-3)

2/1

m=2

Use the point-slope formula and solve for the slope-intercept equation.

y-y1=m(x-x1)

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6 0
3 years ago
Please help. This is due soon. Ty 
Nataliya [291]

Answer:

3 dollars and 9 cents.

Step-by-step explanation:

From the question given above, the following data were obtained:

Total amount = 20 dollars

Amount for gift A = 9 7/10 dollars

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Amount for gift C =?

The amount of money she has left for gift C can be obtained as follow:

A + B + C = 20

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Change to improper fraction

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Collect like terms

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Change to mixed fraction

C = 3 9/10 dollars

C = 3.9

C = 3 dollars and 9 cents

Therefore, Kathy had 3 dollars and 9 cent for gift C

5 0
3 years ago
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