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3 years ago

What is the value of x in the equation 1x - y = 30, when y= 15?

Mathematics

2 answers:

enot [183]3 years ago

4 0

Replace y with 15

The equation is now:

1x - 15 = 30

Add 15 to both sides:

1x = 45

Divide both sides by 1

X = 45

Margarita [4]3 years ago

3 0

Answer: X = 45

Step-by-step explanation:

1x - 15 = 30

add 15 to both sides

1x = 30 + 15

1x = 45

then you have to seperate the 1 from the x, so divide 1 from both sides

45 divided by 1 = 45

so the answer is x = 45

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Which statement is true when all points of a line lie in a plane?

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Your answer would be choice 3, because when all points of a line lie in a plane, the plain contains the line so the line can contain all of the points. Hope this helped. ;)

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3 years ago

Which is equivalent to the equation given below ;

Anestetic [448]

Answer:

y = log6 (15)

Step-by-step explanation:

6^y = 15

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3 years ago

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3 years ago

What is the average metabolic rate for a boiler maker who is performing maintenance on the boiler during shutdown and works for

Ann [662]

Answer:

The average metabolic rate for the boiler maker during the 8 hours is 2.475 kcal/min.

Step-by-step explanation:

We can calculate the average as a weighted average.

This weighted average can be expressed as:

$\bar M=\dfrac{\sum t_i\cdot M_i}{\sum t_i}=\dfrac{3*3.5+0.5*0.3+3.5*2.5+1*0.4}{3+0.5+3.5+1}\\\\\\\\\bar M=\dfrac{19.8}{8}=2.475$

being ti the hours on each task or break, and Mi the metabolic rate for each task or break.

The average metabolic rate for the boiler maker during the 8 hours is 2.475 kcal/min.

3 0

3 years ago

I will mark brainiest if you answer ty also you can answer one of them or both tysm i will mark brainliest for both

rewona [7]

Step-by-step explanation:

a) The total cost C is given by

$C = \$60n + \$40$

b) If the total cost is $400, then we can solve for the number of hours as

$\$400 = \$60n + \$40 \Rightarrow \$360 = \$60n$

Solving for n, we get

$n = \dfrac{\$360}{\$60} = 6\:\text{hrs}$

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2 years ago