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frez [133]
3 years ago
7

I don’t even know what i’m doing anymore. aren’t there supposed to be two answers??

Mathematics
1 answer:
Evgen [1.6K]3 years ago
8 0

Answer:

a>4

Step-by-step explanation:

-7a-11<1-4a

ADD 4a to both sides

-3a-11 <1

Add 11 to both sides

-3a <12

Divide both sides by 3

-a <4

Multiply by -1 both sides and FLIP SIGN

a>4

So  a should be 5 ,6,7,8.........

On the number line you need to count from zero  4 units to the right (positive 4) Once you are in number 4 draw an open circle which means the 4 is NOT included) Draw a line from 4 to the right because it is bigger than 4.

Interval notation is (4,∞)

[ ] a square bracket when we want to include the number 4

( ) a round bracket when we don't want to include the number 4

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3 0
3 years ago
Answer fasttt plsssssss
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Answer:

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5 0
3 years ago
A = 100(1+r)^4<br> Expand the right of this formula.<br> appreciate your help with an explanation
suter [353]

Answer:

100r^4 + 400r^3 + 600r^2 + 400r + 100

Step-by-step explanation:

Expanding ( r + 1 )^4 gives :-

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So multiplying 100 with r^4 + 4r^3 + 6r^2 + 4r + 1 gives :-

100r^4 + 400r^3 + 600r^2 + 400r + 100

4 0
3 years ago
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Mama L [17]
She will pay 90 because the income is 5 times greater
(answer o number one)
7 0
3 years ago
Pls help soon!Amélie runs a bakery. She wants to find out whether her cake sales are affected by the weather conditions. She rec
kozerog [31]
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