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harkovskaia [24]
3 years ago
15

Please answer 5,6,7. With explanation.

Mathematics
1 answer:
Anestetic [448]3 years ago
8 0
First you need to know some rules 2 numbers that are the same with coefficients divided : you differentiate those coeff
and multyplied :you sum up them

12x^8/3x^3= 4x^8-3=4x^5

20^2x=20^x*20^x

m^5*m^-7=m^5-7=m^-2







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Consider the equation 21 = m + 14 1/6. Which step will help to solve this equation? A add 14 1/6 on both sides of the equation.
Furkat [3]

Answer:

B. subtract

Step-by-step explanation:

Subtracting is the opposite of adding which is what is originally in the equation, by subtracting you are canceling out the 14 1/6

7 0
2 years ago
Mariana solved the equation below. Identify her ERROR and EXPLAIN what she did wrong. -3(2x-4)=-12 -6x-12=-12 -6x=0 x=0
nydimaria [60]

Answer:

Her error was multiplying -3 and -4 which gives +12 but she wrote -12 instead

Step-by-step explanation:

Mariana workings:

-3(2x - 4) = -12

-6x - 12 = -12

Her error was multiplying -3 and -4 which gives +12 but she wrote -12 instead

-6x = 0

x=0

Correct workings:

-3(2x - 4) = -12

-6x + 12 = - 12

-6x = -12 - 12

-6x = -24

x = -24/-6

x = 4

8 0
2 years ago
Find the slope of the line that passes through the points (0-2) and (1.4).​
vredina [299]

Answer:

m = 6

Step-by-step explanation:

m=\frac{rise}{run}=\frac{4+2}{1-0}=\frac{6}{1}=\boxed{6}

Hope this helps!

4 0
3 years ago
Read 2 more answers
I don't know how to solve this at all. please help​
dybincka [34]

Answer:

5. 97

Step-by-step explanation:

Well, we know that all we have to do is add QRP and PRS. so 71+25 is 96 (but put 97). For the other one you can do 2x-5=x+1. Then you just solve for x. For the y value you do the same thing, 3y=5y+3. So, x=2 but y=1.5 but its not an answer choice... I know the second one didn't help you, sorry. :(

3 0
2 years ago
Lucas was comparing the weights of boxes of crackers shown in this table. Which list shows the boxes of crackers ordered from gr
Nataly_w [17]
Wheat, Rye, Oat, and Rice
8 0
3 years ago
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