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Studentka2010 [4]
3 years ago
6

Can someone help me and explain, the answer is on the blue paper

Mathematics
1 answer:
postnew [5]3 years ago
5 0
First thing you do is make both sides of the equation fractions which would make it

15/100 + 44/100 = x/20 + 44/100

Then you’d cancel out the 44/100 since there are one of those on each side of the equation. That would leave you at

15/100 = x/20

You then need to get common denominators. 20*5=100 would give you a common denominator of 100, and anything you do to the denominator you do to the numerator so you’d also multiply x by 5 (5x):

15/100 = 5x/100

Then cancel out the 100 since there is a 100 as a denominator on both sides of the equation

15 = 5x

For there you divide both sides by 5 to get x by itself (15/5=3 and 5x/5=x) which would leave you with

3 = x

I’m sry if this didn’t help I’m not great at explaining math equations
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Five the equation of line that is perpendicular to f(x)=-2x+1 that goes through point (0,5)
Alinara [238K]

Answer:

y = \frac{1}{2} x + 5

Step-by-step explanation:

the equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

f(x) = - 2x + 1 ← is in slope- intercept form

with slope m = - 2

Given a line with slope m then the slope of a line perpendicular to it is

m_{perpendicular} = - \frac{1}{m} = - \frac{1}{-2} = \frac{1}{2} , then

y = \frac{1}{2} x + c

the line crosses the y- axis at (0, 5 ) ⇒ c = 5

y = \frac{1}{2} x + 5 ← equation of perpendicular line

7 0
2 years ago
harry rolls a number cube what is the probability that he will roll an even number or a number greater than 4
kap26 [50]
The probability would be either 2/3 or 80%
4 0
3 years ago
Read 2 more answers
The probability that a new car battery functions for more than 10,000 miles is .8, the probability that it functions for more th
MAXImum [283]

Answer:

There is a 50% probability that its total life will exceed 20,000 miles.

Step-by-step explanation:

To solve this question, we use the following formula:

P(A|B) = \frac{P(A \cap B)}{P(B)}

In which P(A|B) is the probability of A happening, given that B has happened, P(A \cap B) is the probability of A and B happening, and P(B) is the probability of B happening.

In this problem, we want:

The probability of the total life of the car battery exceeding 20,000 miles, given that it exceeded 10,000 miles.

P(A \cap B) is the probability of exceeding 20,000 and 10,000 miles. It is the same as the probability of exceeding 20,000 miles(If it exceeded 20,000 miles, necessarily it will have exceeded 10,000 miles). So P(A \cap B) = 0.4

P(B) is the probability of exceeding 10,000 miles. So P(B) = 0.8)

So

P(A|B) = \frac{P(A \cap B)}{P(B)} = \frac{0.4}{0.8} = 0.5

There is a 50% probability that its total life will exceed 20,000 miles.

6 0
3 years ago
Whats 2-2? I'm 8<br> Please help me
jolli1 [7]

Answer:

0

Step-by-step explanation:

2-2=0

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2 years ago
if you roll a pair of six-sided number cubes what is the probability of rolling two numbers whose sum is 6
Afina-wow [57]
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