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masha68 [24]
3 years ago
11

-3m-[2m+(5-m)]+7 explain how the simplified answer: 2-4m is correct

Mathematics
1 answer:
gulaghasi [49]3 years ago
4 0

Step-by-step explanation:

So what you can do is first get ride of the parentheses around 5-m so:

-3m - (2m + 5-m)+7

Then, you can simplify the numbers inside the parentheses, so:

-3m-(m+5) + 7

Then, you can get rid of the parentheses by distributing the - sign:

-3m-m-5+7

Next, just combine like terms:

-4m + 2 or 2-4m

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A bag of chips contains 375 calories and
NISA [10]

Answer:

I like chips ;))))))))))))))))

6 0
3 years ago
Dan invests £11000 into a savings account. The bank gives 3.9% compound interest for the first 3 years and 4.5% thereafter. How
jekas [21]

Answer: £14378

Step-by-step explanation:

We would apply the formula for determining compound interest which is expressed as

A = P(1+r/n)^nt

Where

A = total amount in the account at the end of t years

r represents the interest rate.

n represents the periodic interval at which it was compounded.

P represents the principal or initial amount deposited

From the information given,

P = £11000

n = 1 because it was compounded once in a year.

For the first 3 years,

r = 3.9% = 3.9/100 = 0.039

Therefore,

A = 11000(1+0.039/1)^1 × 3

A = 11000(1.039)^3

A = $12338

The new principal is 12338

For the next 4 years,

A = 12338(1.039)^4

A = 14378

4 0
3 years ago
X−6 = 4(2−3x)−8x <br> _______________
atroni [7]

Answer:

<h2>x= 2/3</h2>

Step-by-step explanation:

x−6 = 4(2−3x)−8x

Rearrange terms

x-6= 4(-3x+2)-8x

Distribute

x-6= -12x+8-8x

Combine Like Terms

x-6= -20x+8

21x-6= 8

Isolate x

21x= 8+6

21x=14

x= 14/21

Simplify

x=2/3

5 0
3 years ago
Read 2 more answers
I dont understand what I'm supposed to do
marissa [1.9K]

Your suppose to take the order pair you got and subsitute it in both of the equations. The chart has the y and x on one side and a number on the other. Treat it like an algebraic equation and try to see if when you subsitute the x and y with the order pair given you get the number on the other side of the equation. For example x + 3y = 6 once subsituted with the order pair looks like 3 + 3(1) = 6. From there you do one step at time until finally you get 6 = 6 which tells you that (3,1) is a solution for this equation. Now you have to find out if the ordered pair works for both of the equations not just one since it said "given system". Hope I explained it clearly enough :)  

5 0
3 years ago
find the first 4 terms of the sequence defined by the explicit rule f(n)=7(n-1)-10. Is it an arithmetic sequence?
Nutka1998 [239]

This is an arithmetic sequence

f(1) = 7(0) -10 = -10

f(2) = 7(1) -10 = -3

f(3) = 7(2) -10 = 4

f(4) = 7(3) -10 = 11

3 0
3 years ago
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