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Kisachek [45]
3 years ago
11

What number is 12% of 90

Mathematics
2 answers:
yulyashka [42]3 years ago
7 0
10.8

12% = 10% + 1% + 1%

10 percent of a number is that number but with the decimal point 1 to the left. 10% of 90.0 is 9.0

1% of a number is that number but with the decimal point two to the left. 1% of 90.0 is 0.9

9 + 0.9 + 0.9 = 10.8

10.8 is 12% of 90
Tasya [4]3 years ago
3 0

Answer:

10.8

Step-by-step explanation:

i used a calculator

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Write an equation for the line perpendicular to y=1/3x-2 and passing through the point (3,3)
maria [59]

line given slope = x coefficient = 1/3

Perpendicular slopes must be opposite reciprocals of each other:  m1 * m2 = –1

line slope (m) = -3

line equation formula = y = mx + b

y = -3x + b

from the point given

x = 3

y= 3

3 = -9 + b

b = 12

y = -3x + 12

6 0
2 years ago
The number of years of education of self-employed individuals in the united states has a population mean of 13.6 years and a pop
muminat

Answer:

0.3 years

Step-by-step explanation:

With problems like these, I always like to start by breaking down the information into smaller pieces.

μ = 13.6

σ = 3.0

Survey of 100 self-employed people

(random variable) X = # of years of education

So now we have some notation, where μ represents population mean and σ represents population standard deviation. Hopefully, you already know that the sample mean of x-bar is the same as the population mean, so x-bar = 13.6. Now, the question asks us what the standard deviation is. Since the sample here is random, we can use the Central Limit Theorem, which allows us to guess that a distribution will be approximately normal for large sample sizes (that is, n ≥ 30). In this case, our sample size is 100, so that is satisfied. We're also told our sample is random, so we're good there, too. Now all we have to do is plug some stuff in.

The Central Limit Theorem says that for large values of n, x-bar follows an approximately normal distribution with sample mean = μ and sample standard deviation = σ/√n. So, with that info, all we need to do to find the standard deviation of x-bar is to plug our σ and n into the above formula.

σ(x-bar) = σ/√n

σ(x-bar) = 3.0/√100

σ(x-bar) = 0.3

So your answer here is .3 years.

7 0
3 years ago
LONG WORD PROBLEM I KNOW! PLEASE ILL GIVE THANKS BRAINLIEST AND POINTS FOR THIS ANSWER! PLEASE!
11Alexandr11 [23.1K]
Answer:
5X + 8Y >= 300; intersection at (-20, 50)
Step-by-step explanation:
let t = work hours
0 < t < 30
X = time lawn mowing
Y = time babysitting.
X + Y < 30
5X + 8Y >= 300
We could solve...
X < 30 - Y
5(30 - Y) + 8Y >=300
150 - 5Y + 8Y >= 300
3Y >=150
Y >=50
then X < -20
intersection at (-20, 50)
5 0
3 years ago
35 multiplied by the quantity r less than 45
Reil [10]
Hello There!

Call the missing value 'n'
35n < 45.

Hope This Helps You!
Good Luck :)

4 0
3 years ago
6th grade math <br><br> 5x - 2
Naddik [55]

Answer:

-10

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
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