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bulgar [2K]
3 years ago
14

3/4=m+1/4 What is m ​

Mathematics
1 answer:
Julli [10]3 years ago
8 0

Answer:

m = 1/2

Step-by-step explanation:

We need to solve the equation:

3/4 = m + 1/4

In order to solve for m, we must isolate the variable - in other words, we need to move all the m terms to one side and all the non-m terms to the other.

So, subtract 1/4 from both sides to isolate m:

3/4 - 1/4 = m

m = 2/4 = 1/2

Thus, m = 1/2.

<em>~ an aesthetics lover</em>

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The expression 2.5a+2b gives the cost (in dollars) for a DVDs and b CDs at a moving sale. a. The cost for 1 DVD is $ and the cos
Mekhanik [1.2K]

Answer/Step-by-step Explanation:

Given:

a = no. of DVDs

b = no. of CDs

Total cost ($) for DVDs and CDs = 2.5a + 2b

a. The cost for 1 DVD = 2.5(a) = 2.5(1) = $2.5

The cost for 1 CD = 2(b) = 2(1) = $2

b. Total cost for 4 DVDs and 4 CDs:

Substitute a = 4, and b = 4 into the equation.

2.5(4) + 2(4)

10 + 8 = 18

Total cost for 4 DVDs and 4 CDs = $18

c. To find out if $20 would be enough to buy 6 DVDs and 3 CDs, substitute a = 6, and b = 3 into the equation. Solve for the total cost to see if it equals $20 or is less than $20. If it's greater than $20, then it won't be enough.

2.5(6) + 2(3)

15 + 6 = 21

6 DVDs and 3 CDs cost more than $20, therefore, $20 is not enough.

5 0
2 years ago
What is the difference between a straight angle and a line
Bogdan [553]
A straight angle is 180 degrees in a right angle is 90 degrees
3 0
3 years ago
A retail variety store that advertises extensively by mail circulars expects a sale with 20% probability. Suppose 30 prospects a
KIM [24]

Answer:

The expected number of sales of this store from this sample of 30 is 6.

Step-by-step explanation:

For each prospect, there are only two possible outcomes. Either there is a trade, or there is not. Prospects are independent of each other. So we use the binomial probability distribution to solve this question.

Binomial probability distribution

Probability of exactly x sucesses on n repeated trials, with p probability.

The expected value of the binomial distribution is:

E(X) = np

A retail variety store that advertises extensively by mail circulars expects a sale with 20% probability.

This means that p = 0.2

Suppose 30 prospects are randomly selected from a city-wide mailing.

This means that n = 30

What is the expected number (mean) of sales of this store from this sample of 30?

E(X) = np = 30*0.2 = 6

The expected number of sales of this store from this sample of 30 is 6.

4 0
2 years ago
How would I solve these problems?
oksian1 [2.3K]
You add the whole numbers together first and then you do the numerators then the denominators. Like for example, #2 would be 2 and then 4 on the top and 6 on the bottom since they share a common denominator! Hoped this helps.
3 0
3 years ago
0.2 ( 10 - 5c ) = 5c - 16
Mumz [18]

Answer: c = 3

Step-by-step explanation: Distribute 0.2 to (10-5c)

2-1c=5c-16

Then subtract 2 on both sides and subtract the 5c.

-1c=5c-18

-6c=-18

Then divide -6 to -18

-18/-6 = 3

8 0
3 years ago
Read 2 more answers
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