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Bumek [7]
2 years ago
11

What is 12x+3? please be specific with your answer

Mathematics
1 answer:
DedPeter [7]2 years ago
5 0

Answer:

That is correct

Step-by-step explanation:

12x-3(5+4x)=7x+20

12x-15-12x=7x+20

-15=7x+20

-35=7x

-5=7

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It takes 8 hours for 4 men to paint a room.
eimsori [14]

Answer:

16 men would be needed to paint the room in 2 hours

Step-by-step explanation:

We can use proportion to solve the problem given, but first we need to determine whether it is a direct or indirect proportion.

If the number of men are increase, the time taken to do the work will decrease, If the number of men are decrease, the time taken to do the work will increase. Therefore, this is an indirect proportion.

We are going to arrange the data inversely.

Let x be the number of men needed to paint the room in two hours

8 hours =  2 hours

    x        = 4 men

Cross-multiply

2×x = 8×4

2x = 32

Divide both-side of the equation by 2

2x/2 = 32/2

x = 16 men

16 men would be needed to paint the room in 2 hours

7 0
3 years ago
The average number of customers per day at a home improvement store is given in the following table. Let x represent the day whe
nika2105 [10]

Answer:

A. 33.690\sin (0.887x + 1.337) + 81.684.

Step-by-step explanation:

We are given that,

x = Number of days where 1 = Sun of 1st week and 7 = Sat of first week.

The corresponding table for the data is given by,

Days        Day Number               Number of Customers

Sun                    1                                     115

Mon                   2                                     77

Tue                    3                                     60

Wed                   4                                     51

Thur                   5                                     68

Fri                      6                                      86

Sat                     7                                      120

The general form of the regression model is a\sin (bx+c)+d.

Using the sinusoidal regression calculator, we get that,

a = 33.690

b = 0.887

c = 1.337

d = 81.684

That is, the sine regression model is 33.690\sin (0.887x + 1.337) + 81.684.

Thus, option A is the sine regression model for the given data.

6 0
3 years ago
Read 2 more answers
What is the equation in point-slope form of a line that passes through the points (3, −5) and (−8, 4) ?
Nookie1986 [14]

I think it's C or A what do you think it is



7 0
3 years ago
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Select the equation where x = 6 is a solution.
olga55 [171]

Answer: D 5x=30

Step-by-step explanation

You just substitute 6 into the equations to see if they make the equation true.

8 0
2 years ago
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Find the length of the third side. If necessary, round to the nearest tenth. 5 9
lbvjy [14]

Answer: so you have a picture of the shape or what thing we have to find the length to

Step-by-step explanation

6 0
3 years ago
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