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Lena [83]
3 years ago
8

Is -7 + 9= 9 + 7 true, false or open

Mathematics
2 answers:
Natasha_Volkova [10]3 years ago
6 0
-7 + 9  \neq  9 + 7

2 \neq 17

When you add a positive number and a negative number, you get a positive, but the number is smaller. If you add two positive numbers, then of course, you're going to get a positive number as an answer. But overall, this is false.
True [87]3 years ago
5 0
That's false -7+9=2 and 7+9=18
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Martin charges $15 for every 5 bags of leaves he raked last week and he raked 27 bags of leaves how much money did he earn
Luba_88 [7]

Answer:

$81

Step-by-step explanation:

First, find out how much he charges for raking 1 bag of leaves. The following equation can solve for the amount charged per bag.

<em>[b = amount charged per bag]</em>

15/5 = b

15/5 = 3

3 = b

This means he charges $3 for one bag.

Martin rakes 27 bags, so multiply 3 by 27 to find the total amount of money he earned

27(3) = 81

So, Martin earned $81 for raking 27 bags of leaves

4 0
3 years ago
Solve for x.<br> 2x^2+12x+11-(x+4)^2
Andru [333]
2x² + 12x + 11 - (x - 4)²
2x² + 12x + 11 - 1(x - 4)²
2x² + 12x + 11 - 1(x - 4)(x - 4)
2x² + 12x + 11 - 1(x(x - 4) - 4(x - 4))
2x² + 12x + 11 - 1(x(x) - x(4) - 4(x) + 4(4))
2x² + 12x + 11 - 1(x² - 4x - 4x + 16)
2x² + 12x + 11 - 1(x² - 8x + 16)
2x² + 12x + 11 + 1(x²) + 1(8x) - 1(16)
2x² + 12x + 11 + x² + 8x - 16
2x² + x² + 12x + 8x + 11 - 16
3x² + 20x - 5
5 0
3 years ago
Answer pls kkhejejrjt
balu736 [363]

Answer:

The answer is B :) hope you have a great day

7 0
4 years ago
Plzzz help. I just need someone to tell me a bunch of stuff about planning for the cost of college. I will mark brainliest when
sammy [17]

Answer:

is this for a project or just for you?  There are several ways

Step-by-step explanation:

First, a few questions:

what are your interests in college? like what subject/ major?

Are you interested in a certain type of college like local, state school, private, in state/ out of state?

How do you feel about attending courses on line?

Are you interested in working while in school?

Do you plan to live at home, in a dorm, with a relative or roommate? (in other words, would you have to pay rent?)

If you're still in high school, would you be able to work now before going to college?

How soon do you plan to/ will be able to attend college?

Things you need to know are:

does your state pay for tuition to state schools?

Do your parents/guardian/relative claim you on their taxes? because if they do, the financial aid dept will have to look at the income of whomever claims you.

If you have a few schools in mind, go on their website and look at the financial aid and see if they list any grants that you could apply for.

You can also check their cost per credit for a class. Be aware that 1 class could have 2, 3, or 4 credits etc so, for example, if their cost was $200 per credit, a class might cost you $800... like... just 1 class. Private schools are more expensive than state schools, but some private schools have special grants from alum or donations etc.

I'm just going to throw a number out there and say that if you went to a local uni near me, i'd budged for about $3000 a semester and that's just class fees, books, administrative fees... not including dorm, food or transportation.

I'm sure you might not want to count on a grant or loan, but it's hard for a single person to pay for college unless you have funds or a good paying job. Also, going to a junior college for core classes (english, science, math, history) can be cheaper OR find an online class ( but make sure in both cases that your credits will transfer).

Usually a school guidance counselor will help you through all of this stuff.

OH! there's also work-study where you can get a job on campus that goes towards paying your tuition.

Really there are many options.

7 0
3 years ago
Marcus earns $13.00 per hour by walking the neighbor's dogs. He walked the dogs for
Lisa [10]

Answer:

$52.00

Step-by-step explanation:

if he makes 13.00 per hour, for four hours, you just times 13 by 4 to get 52.

4 0
3 years ago
Read 2 more answers
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