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zhannawk [14.2K]
3 years ago
10

15 is 30% of what number? (Please explain and/or show work)

Mathematics
2 answers:
vivado [14]3 years ago
7 0
Alright so I thought of it like this. 30 is 30% of 100
divide 30 in 1/2 you get 15. divide 100 in half to make it proportional. And you get 50.
But another more mathematical way is as follows
So you have your 15
Then you convert your percent into a decimal. 30% converts to 0.30
Divide your 15 by the converted percentage...so ex: 15/0.3
calculate and it should equal 50.
So 15 is 30% of 50
Mariana [72]3 years ago
6 0
<span>0.30x = 15
x = 15/0.3
x = 50</span>
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5(3+t)-3(t+1) I don't understand how to do this problem.
shtirl [24]
Okay, just break it up so you're not overwhelming yourself or anything :)
So here, do it in steps-

Let's do 5(3 + t) first:
Distribute the 5, or in non-mathematical terms, just multiply 5 by 3 and t. This will give you 15 + 5t.

Now onto -3(t + 1):
Again, just multiply -3 by t and 1. This will come out to: -3t - 3.

*Note: the 3 is negative because it's "MINUS 3" in the original equation and remember that any number times a negative, if it isn't negative itself, will turn out to be negative.... (aka "-" x "-" = "+" | "+" x "+" = "+" | "-" x "+" = "-")*

ANYWAY
Now just put both answer together and you get:
15 + 5t -3t - 3. You can only add and minus the LIKETERMS (which are the things that are the same) - in this case, the liketerms are 15 and -3 ,,,, AND 5t and -3t.

15 - 3 = 12
5t - 3t = 2t

12 + 2t is your final answer. Hope that helps! :)
7 0
3 years ago
PLEASE ANSWER THIS ITS URGENT
Oksi-84 [34.3K]

Answer:

  • Option C

Explanation:

First, I plotted both the lines on the graph, then I graphed the inequality.<u> </u><em>Please check out image.</em> Looking at the image, we can tell that the graph matches with Graph-C. Hence, Option C is correct.

Hoped this helped!

3 0
2 years ago
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Hal used the following procedure to find an estimate for Step 1: Since and and 81 &lt; 82.5 &lt; 100, is between 9 and 10. Step
aalyn [17]
The answer would be i<span>n step 4, he made an error in determining which value is closer to 82.5</span>
6 0
3 years ago
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Interpreting Solutions:
Darina [25.2K]
We have that
solution is
x <-10 or x>=25

for
x < -10
the solution is the interval (-∞, -10)

and 
for 
x>=25
the solution is the interval [25,∞)

therefore
the solution for
x <-10 or x>=25
is
(-∞, -10)  ∪ [25,∞)

<span>the solution is any value of x less than -10 or greater than or equal to 25</span>
6 0
3 years ago
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An isosceles right triangle has a hypotenuse of 16mm what would the area of the triangle be
olga2289 [7]

Answer: 64 square mm

Step-by-step explanation:

6 0
2 years ago
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