MATHEMATICS MIDDLE SCHOOL

9a-5a for a=7 what is the answer

Answers

Answer 1

Answer:

Hi there!

To solve your answer, since we know a = 7, we can easily solve your equation.

But before we go onto that, I want to show you a tip or two about solving equations with variables next to numbers.

When you have a number, and a variable attached to it, it means to multiply.

Now, to make this equation look a little easier, lets rewrite it.

9 × 7 - 5 × 7 = ___

According to PEMDAS, we won't go straight from left-to-right when solving here. We'll skip around a little.

9 × 7 = 63.

5 × 7 = 35.

Now, since we've multiplied the two numbers, its time to subtract them.

63 - 35 = 28. Sooooo........

9 × 7 - 5 × 7 = 28

Hope this helps!

Message me if you need anything else, I'd be happy to help you out! :D

Answer 2

Answer: the answer is 28
when a number is attached by a variable, that usually means that it is attached by multiplication so, i multiplied 9 times 7 and got 63 then i multiplied 5 times 7 and got 35 then subtract 63 and 35 and i got 28
i hope this helps :)

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A pack of paper costs $3.75 including tax. Mr. Cooper wants to purchase packs of paper for his class and has a $20 budget. Write an inequality to solve for the number of packs of paper Mr. Cooper can purchase with his budget.

Answers

Answer:

$3.75x\leq 20$

5 packs of paper.

Step-by-step explanation:

Let x be the number of packs of paper.

We have been given that a pack of paper costs $3.75 including tax. The price of x paper packs would be $3.75x$ .

Since Mr. Cooper has a $20 budget, so the cost of x paper pack should be lees than or equal to 20.

We can represent this information in an inequality as:

$3.75x\leq 20$

$(3.75x)/(3.75)\leq (20)/(3.75)$

$x\leq 5.333$

Since we can purchase whole number of paper packs, therefore, Mr. Cooper can purchase 5 packs of paper with his budget.

3.75p<=20

divide by 3.75

p < 5 1/3

he can purchase 5 packs of paper

Determine the intercept of the line that passes through the following points

Answers

20-15/1-3= 5/-2

x=-2.5

15= 3(-2.5) + b

15=-7.5 + b

b=22.5

X-Intercept= (-2.5,0)

Y-Intercept= (0, 22.5)

3 . Log² x + 5 . Log x - 2 ≤ 0
3 3

Answers

It's not always easy to type in mathematical symbols, but you may need to try again here. It is unlikely that your problem actually states
2
Log x. Perhaps you meant Log x.
2

Double-check to ensure that you have entered this problem correctly. Also, please include the instructions for this problem. Explain what that "3 3" means.

Martin has 15 texts messages on his phone .Two thirds of them are from his sister how many texts does martin have from his sister? I need three different ways to calculate this answer?

Answers

15/3=5. 5x2=10. 2/3=66.66%. 10%=1.5 5%=0.75 1%=0.15 0.66 rounds to 1 1.5x6=9. 9+0.76+1.5+1.5=10. 2:3=10:15.

Divide 15 by 3 and add that number to itself

Multiply 15 by (2/3) (don't forget parentheses if you are using a calculator)

Draw a pic and shade in two thirds

_______________________________
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|__________|__________|__________|

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|__________|__________|__________|

_______________________________
| | | |
|__________|__________|__________|

////=shade in

Katie has read 32% of a book. if she has read 80 pages, how many more pages does Katie have left to read ?