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daser333 [38]
3 years ago
10

Explain the error in the work shown. Find the correct answer.

Mathematics
2 answers:
const2013 [10]3 years ago
5 0
You cant have a negative exponent

Kobotan [32]3 years ago
4 0
The mistake is in 3rd step, as we can't equate powers if bases are different.
4^-3=2^8a
2^-6=2^8a
-6=8a
-3/4=a
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I need help with my Algebra 1 ugh plz help! Sorry there’s a typo
mezya [45]

Answer:

x + 8 > 11

dot at 11 going to the right.

4 0
3 years ago
-90 = -2(6a – 3)<br> Pls help just solving an equation. :)
Ksenya-84 [330]

Answer:

a=8

Step-by-step explanation:

We are asked to solve this equation -90=-2(6a-3) . As here our variable is a , we will solve it for a. Let us do it step by step

1. Opening the brackets and distribution of -2 inside

-90=-12a+6

2. Subtracting 6 from both sides we get

-90-6=-12a+6-6

-96=-12a

3. Dividing both sides by 12 we get

\frac{-96}{-12}=\frac{-12a}{-12}

a=8

7 0
3 years ago
A lake covers a surface area of about 20,000 square miles.
trapecia [35]

Step-by-step explanation:

2×1000¹⁰

hope this helps

4 0
3 years ago
Sophie is choosing an outfit for the day. She has a choice of four pairs of pants, three shirts, and four pairs of shoes. How ma
blsea [12.9K]
The answer is 48. 4x3x4.
8 0
3 years ago
14. Solve: (a) 2y - 1/2 = -1/3 (b) 6 + 5 (a - 1) = 30
Strike441 [17]

A)2y - 1/2 = -1/3

2y=-1/3+1/2

FIND THE LCM TO MAKE THE FRACTIONS LIKE FRACTIONS

LCM OF 3 AND 2 IS 6

-1/3*2=-2/6

1/2*3=3/6

-2/6+3/6=1/6

2y=1/6

y=1/6 ÷ 2

TAKING THE RECIPROCAL,

RECIPROCAL OF 2 IS 1/2

y=1/6*1/2

y=1/12

B) 6 + 5 (a - 1) = 30

6+(5)*(a)+(5)*(−1)=30(Distribute)

6+5a+−5=30

(5a)+(6+−5)=30(Combine Like Terms)

5a+1=30

5a=30-1

5a=29

a=29/5

15.sum of three consecutive integers=48

let the numbers be x ,x+1,x+2

x+x+1+x+2==48

3x+3=48

3x=48-3

3x=45

x=45/3

x=15

x+1=15+1=16

x+2=15+2=17

the numbers are 15,16,17

​​  

7 0
3 years ago
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