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Savatey [412]
2 years ago
8

I have alot of questions and I need help with a practice quiz ​

Mathematics
2 answers:
Fudgin [204]2 years ago
6 0

ok imma help u just it should not be chem

schepotkina [342]2 years ago
6 0
Okay! ill help, what subject ??
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Please help with my brother's math homework. Thank you.
Paha777 [63]

Answer:

Dividing two fractions is the same as multiplying the first fraction by the reciprocal of the second fraction.

6 0
2 years ago
Write at least 5 arithmetic sequence and determine the common difference
Margarita [4]

Answer: 1,6,11,16,21,26

Step-by-step explanation:

The common difference is 5 (n+5)

7 0
2 years ago
Read 2 more answers
If eight is added to four times a number the result is 96
Ilia_Sergeevich [38]

Answer:

12

Step-by-step explanation:

6 0
3 years ago
A set of piano prices distributed at a mean of 3000 and a standard deviation of 200 dollars. An electric piano has a price of 25
lana [24]

Answer:

The proportion of piano prices higher than the electric piano is 98.3%

Step-by-step explanation:

The first thing to do here is to calculate the standard score of the price of the electric piano given.

Mathematically, this is

z-score = (x-mean)/SD

where mean is 3000 and SD is 200, x is 2576

z-score = (2576-3000)/200 = -2.12

Now we proceed to calculate the probability of this z-score

The probability we are trying to calculate is

P( x > $2576) or simply P ( z > -2.12)

Using standard score probability calculator or table, we have

P(x>2576) = 1 - P(x<2576)

But, P(x<2576) = 0.017003

P(x>2576) = 1 - P(x<2576) = 0.983

This is same as 98.3%

4 0
3 years ago
The area of a parallelogram with the height of 6 meters is a hundred twenty six square meters what is the base length of the par
Anastaziya [24]
That's easy, it is 126 divided by 6 equals 21 meters. cause the formula is base times height = area so you do the opposite of it which is base = area divide by height
6 0
3 years ago
Read 2 more answers
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