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3 years ago

What the answer and how can I explain my answer

Mathematics

2 answers:

yaroslaw [1]3 years ago

7 0

The order of operations, is PEMDAS (parentheses, exponents, multiplication, division, addition, subtraction) so you should always follow that order when you're solving equations like this one, but when it comes to multiplication and division, it just depends on whichever one comes first, and the same is true for addition and subtraction. So since there aren't any parentheses or exponents here, we will start with multiplication or division...it just depends on which one comes first in the equation. 15 ÷ 3 is first so we start with that: 15 ÷ 3 = 5:
5 + 6 x 2 - 10 = ? Now we move onto the next multiplication or division problem we see until there are no more left. 6 x 2 is the next and last one:
6 x 2 = 12 5 + 12 - 10 = ? Now we move on to addition and subtraction, and again, whatever comes first is what we do first:
5 + 12 = 17 17 - 10 = ? Last but not least: 17 - 10 = 7

So your answer is 7! Hope this was helpful!

madreJ [45]3 years ago

7 0

Answer:

the answer is 7

Step-by-step explanation:

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The first and second year’s sales for a company were $328,000 and $565,000. The expenses for the first year were $117,000. The c

Serhud [2]

As a disclaimer, I can't say I'm completely confident in this answer. Use at own risk.

Formulas:

Year 1: 328,000 (sales) - 117,000 (expense) = 211,000 (profit)

Year 2: 565,000 (sales) - x (expense) = y (profit)

Net Profit: 211,000 + y = 113,000

Math

211,000 (profit y1) + 565,000 (sales y2) = 776,000

776,000 - 113,000 (net profit) = -663,000 (expenses)

Confirm:

Net Profit: 211,000 + y = 113,000 (listed in formulas, just a reminder)

Plug in: 565,000 (y2 sales) - 663,000 (our solution) = -98,000

211,000 (y1 net) + -98,000 (our plug in) = 113,000 (2 year net profit given to us)

6 0

3 years ago

R: 7x - 2y = 14<br> each line<br> Slope

Llana [10]

Answer:

m=7/2

Step-by-step explanation:

7x-2y=14

2y=7x-14

y=7/2x-14/2

y=7/2x-7

y=mx+b where m=slope and b=y-intercept,

the slope is 7/2

7 0

3 years ago

Five dogs were running in a race. Bandit completed the race 10 seconds after Sergeant and 30 seconds before Sally. Smokey comple

ipn [44]

Answer:

The Answer is D

Step-by-step explanation:

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3 years ago

2) Brian purchased pens for 75 cents each and pencils for 40 cents each he bought total of 22 writing utensils for $11.95. How m

d1i1m1o1n [39]

Answer:

13 pencils.

Step-by-step explanation:

Let x be the pens and y be the pencils

Given:

Brian purchased pens for 75 cents each and pencils for 40 cents each he bought total of 22 writing utensils for $11.95.

Total pens and pencils is 22

So, $x+y=22$ ----------------(1)

And he bought all utensils for $11.95. and each pen for 75 cents and pencils for 40 cents.

$0.75x+0.40y=11.95$ ------------(2)

solve equation 1 and equation 2 for x and y.

From equation 1.

$x+y=22$

$y=22-x$ ----------------(3)

put y value in equation 2.

$0.75x+0.4(22-x)=11.95$

$0.75x+0.4\times 22-0.4x=11.95$

$0.75x+8.8-0.4x=11.95$

$0.75x-0.4x=11.95-8.8$

$0.35x=3.15$

$x=\frac{3.15}{0.35}$

$x=9$

Now substitute x value in equation 3.

$y=22-9$

$y=13$

So, he buy 13 pencils.

5 0

3 years ago

What is the converse of the following conditional statement? If x = –10, then x2 = 100

tangare [24]

The converse would be If x² = 100 then x = -10

So essentially if the conditional statement is p → q then the converse is q → p (In essence, the converse of a conditional statement is formed by interchanging the hypothesis and the conclusion.)

8 0

3 years ago