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Arisa [49]
4 years ago
12

15.8 divided by x =0.7 what is x

Mathematics
1 answer:
pogonyaev4 years ago
3 0

22.5714285714 i got that by dividing 0.7 from 15.8

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Matias spent 2 hours studying for an exam, and he received an A on the exam. Normally, he would have spent that time watching TV
Setler79 [48]

Answer:

1) 1 hour

Step-by-step explanation:

Marginal cost is the total cost of making the product.

Here, the Total number of hour Matias need to move from grade B to grade A is:

Time spent to get grade A - Time spend to get grade B

= 2 hours - 1 hours = 1 hours

Thus, Matias ’s marginal cost in terms of TV viewing to moving from a B to an A on the exam is 1 hour.

6 0
3 years ago
Solve the system of equations.<br> - 5x + 2y = 9<br> Y = 78<br> =
Oksi-84 [34.3K]

Answer:

x = 147/5 and y = 78

Step-by-step explanation:

First solve by substitution and put 78 into y in -5x + 2y = 9 so you get 147/5

then plug 147/5 into x and find y

7 0
3 years ago
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-5x+10x+3=5x+6<br> Along with an explanation please.
vitfil [10]
There is no solution to this equation

X≠0

The answer would be 3=6 which is an invalid answer therefor an equation with no solution.

-5x+10x+3=5x+6

Combine like terms first

5x+3=5x+6

After this whether you make it 10x=9 that’s still an invalid answer but if you subtracted 5x on both sides it’d be 3=6

Therefore x≠0
7 0
4 years ago
At a large university a simple random sample of five female professors is selected and a simple random sample of 10 male profess
Aloiza [94]

Answer:

D. All of the above

Step-by-step explanation:

Samples may be classified as:

Random: Basically, put all the options into a hat and drawn some of them.

Systematic: Every kth element is taken. For example, you want to survey something on the street, you interview every 5th person, for example.

Cluster: Divides population into groups, called clusters, and each element in the cluster is surveyed.

Stratified: Also divides the population into groups. However, then only some elements of the group are surveyed.

In this problem:

Two random samples are selected and combined. The combination is a random sample. So A. is correct.

They are not balanced. More male professors than female are chosen. So B. is correct.

The teachers are divided into groups(male and female). And some members of each group are selected. So C. is correct.

So the correct answer is:

D. All of the above

6 0
3 years ago
Which sequence of transformations performed on triangle J could result in similar triangle J'?
Luda [366]

Answer:

B

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
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