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nevsk [136]
3 years ago
15

How many solutions can be found for the equation −4x − 11 = 2(x − 3x) + 13? (4 points) none or one or two or infinitrly many

Mathematics
1 answer:
Nadya [2.5K]3 years ago
5 0
There is one solution
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−30=5(x+1)minus, 30, equals, 5, left parenthesis, x, plus, 1, right parenthesis<br> x =x=x, equals
ivann1987 [24]

Answer:

x = -7

Step-by-step explanation:

−30=5(x+1)

Divide each side by 5

-30/5=5/5(x+1)

-6 =x+1

Subtract 1 from each side

-6-1 = x+1-1

-7 =x

8 0
3 years ago
The square of a whole number 'n' lies between 80 and 150. Find all possible values for 'n'.
pychu [463]
The square of a whole number n lies between 80 and 150, so n lies between √80 and √150.

\sqrt{80} \approx 8.9 \\&#10;\sqrt{150} \approx 12.2

n is a whole number and lies between 8.9 and 12.2, so n can be 9, 10, 11, or 12.

The possible values for n are 9, 10, 11, and 12.
5 0
3 years ago
I need help <br><br> Explain your answer please
shepuryov [24]

Answer:

For a the answer is 1/20 or 5%. For b the answer is 6/20 or 30%.

Step-by-step explanation:

a) There are 20 spots the dart can land on. To land on one specific spot, it would be 1/20. 1 spot out of 20 spots.

b) There are 20 spots the dart can land on. To land on any of the 6 spots, it would be 6/20. 6 spots out of 20 spots.

7 0
3 years ago
The price of a cd was decreased by 20% to £7.68. What was the price before the decrease?
aleksandrvk [35]

Answer:

£9.6

Step-by-step explanation:

x = the original price of a CD

£x = 100% of the original price

The price of a CD was decreased by 20% to £7.68.

This means:

£7.68 = 100% - 20%

£7.68 = 80% of the original price

From this, we will find 1% of the original price.

£7.68 ÷ 80 = 1%

£0.096 = 1%

Since the original price ( x ) = 100% of the original price, we will find 100% of the original price.

£0.096 × 100 = 100%

£9.6 = 100%

Therefore, the original price of a CD = £9.6

4 0
3 years ago
Someone please help me answer this!!
Ivahew [28]

Answer:

8 mm

Step-by-step explanation:

Answer attached....

Hope it helps :)

7 0
2 years ago
Read 2 more answers
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