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brilliants [131]
3 years ago
10

Three less than triple a number is the same as the number plus 57. What is the number?

Mathematics
1 answer:
saw5 [17]3 years ago
3 0
Make this into an equation keeping the number as x
3x-3 = 57+x
3x-x = 57+3
2x=60
x= 30

prove this by substituting the x 
30*3 -3 =57+30
87=87
there you have it :)
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Around 50% of live births in the United States are male, the remainder are designated female. However, recent medical studies su
vesna_86 [32]

Answer: The percentage is almost 2%

Step-by-step explanation:

Around 50% of live births in the United States are male. The interpretation of this could be 49% or 51% that is 50 plus or minus 1 percent are Male

the remainder are designated female. That is Female = 49% or 51% too.

If many individuals do not fit neatly into either Male or female.

Then the current estimate of the percentage of such births will be around:

+1 - (-1) = 2%

The percentage is almost 2%

5 0
3 years ago
How to solve for the x??? Pls hep
Talja [164]

Answer:

x = 97.5 degrees

Step-by-step explanation:

First, we need to know what the total sum of interior angles. We use the formula (n-2) * 180, n being the number of sides.

Since this is a 6-sided polygon, the sum is (6-2) * 180, or 720 degrees.
We have the total sum of interior angles, so now we have all the information we need.
720 degrees = (2x-50) + (x+40) + 80 + (x+20) + 90(right angle symbol) + 150
720 = 4x + 330 (subtract 330 from both sides)

390 = 4x (divide by 4)
x = 97.5 degrees


7 0
2 years ago
A line passes through the point (10,-7) and has a slope of 1/2
vichka [17]

Answer:

1/2x -12

Step-by-step explanation:

y- -7 = 1/2 (x-10)

y + 7 = 1/2x - 5

-7              -7

y= 1/2x -12

5 0
3 years ago
Two times a number is equal to the absolute value of the quantity "sixty-three less than five times that number." What could the
ANTONII [103]

Answer:

The number is 21.

Step-by-step explanation:

First you need to solve for n.

So the equation would be 2n = |5n-63|

First you'd subtract 5n from each side, that would give you -3n=|-63|

Then you need to divide each side by -3 to get n=21.

                       ~~~~~

To check, you can just plug 21 back into the equation.

2(21) = |5(21) - 63|

42 = |105-63|

42 = |42|

42 = 42

5 0
3 years ago
Explain in sentences how you can add or subtract two fractions with common denominators?
Lemur [1.5K]
If two fractions have the same denominators, then just simply add up the numerators together and keep the denominator.

Examples:

\frac{4}{10} +  \frac{5}{10} =  \frac{9}{10}

\frac{10}{12} - \frac{2}{12} = \frac{8}{12}
8 0
3 years ago
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