All categories

3 years ago

If m + n = 12 and n = 5, what is m-n?don't know the answer

Mathematics

2 answers:

vladimir1956 [14]3 years ago

5 0

We need to find m first.

m+n=12, n=5 (plug in n as 5)

m+5=12 (subtract both sides by 5)

m=7

m-n: we know that m is 7 and n is 5

7-5=2

The final answer is 2.

Gnesinka [82]3 years ago

4 0

Answer:

Step-by-step explanation:

If m+n = 12 and we know what n is, then we can substitute n in to solve for m!

It would look like this:

m + 5 = 12

m = 12 - 5

m = 7

Next, we plug our numbers in for each variable in the next equation (m-n):

7 - 5

2

You might be interested in

Which equation can be used to solve for c? Triangle A B C is shown. Angle A C B is 90 degrees and angle A B C is 35 degrees. The

aliina [53]

Answer:

The correct option is B) $c=\frac{5}{\cos35^0}$ .

Step-by-step explanation:

Consider the provided information.

Angle A C B is 90 degrees and angle A B C is 35 degrees.

The required figure is shown below:

We need to find the value of c.

Use the trigonometric function: $\cos\theta=\frac{Adjacent}{Hypotenuse}$

$\cos35^0=\frac{5}{c}$

$c=\frac{5}{\cos35^0}$

Hence, the correct option is B) $c=\frac{5}{\cos35^0}$ .

4 0

3 years ago

Read 2 more answers

The spoilage rate on a shipment of wheat is expected to be 20%. It was purchased at a cost of $5.35 per bushel. What should the

kompoz [17]

Answer:

$7.09

Step-by-step explanation:

Let wheat shipment be x bushels

Per bushel cost = 5.35

So x bushels cost = 5.35x

Achieving markup of 6% means 1.06 * 5.35x =5.671x

20% spoiled means 80% of x stays, so 0.8x will need to be sold at 5.671x

Selling price should be 5.671x/0.8x = $7.09

So that's 7 dollars and 9 cents

6 0

3 years ago

Read 2 more answers

If Maria designs a function to predict the amount of revenue, r, generated as a function of the number of people, n, who attend

Katarina [22]

Answer:

Only whole numbers of people, n, are assumed in the calculation.

Step-by-step explanation:

The function relating the number of people, n, to the revenue, r, implicity assumes that only whole people will purchase tickets. 13.5 would mean that 13 normal people and 1/2 of a person bought tickets. This can't be in the domain, since the ticket saleperson would run away if 1/2 of a person showed up: thus no ticket sale.

Actually, it may depend on how one defines a person. Is it 1/2 physically, or 1/2 mentally? I've personally seen the latter show up at some fundraisers.

4 0

3 years ago

A number plus 7.1 is less than 5. write this word sentence as an inequality

Oxana [17]

Answer:

-2.1+7.1=5

Step-by-step explanation:

6 0

3 years ago

A machine that produces a major part for an airplane engine is monitored closely. In the past, 10% of the parts produced would b

nata0808 [166]

Answer:

With a .95 probability, the sample size that needs to be taken if the desired margin of error is .04 or less is of at least 216.

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of $\pi$ , and a confidence level of $1-\alpha$ , we have the following confidence interval of proportions.