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saul85 [17]
3 years ago
11

How many solutions does the equation |x+7|= -1 have?

Mathematics
1 answer:
KonstantinChe [14]3 years ago
6 0

None.

The absolute value of something cannot be <em>negative</em>.

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How much more interest will Maria receive if she invests $1,000 for one year at x percent annual interest, compounded semiannual
notka56 [123]

Answer:

  $0.025x² . . . where x is a number of percentage points

Step-by-step explanation:

The multiplier for semi-annual compounding will be ...

  (1 + x/2)² = 1 + x + x²/4

The multiplier for annual compounding will be ...

  1 + x

The multiplier for semiannual compounding is greater by ...

  (1 + x + x²/4) - (1 + x) = x²/4

Maria's interest will be greater by $1000×(x²/4) = $250x², where x is a decimal fraction.

If x is a percent value, as in x = 6 when x percent = 6%, then the difference amount is ...

  $250·(x/100)² = $0.025x² . . . where x is a number of percentage points

_____

<u>Example</u>:

For x percent = 6%, the difference in interest earned on $1000 for one year is $0.025×6² = $0.90.

3 0
3 years ago
Work out the value of: 5x - 2y when x = 3 and y = 4
KATRIN_1 [288]
The expression is 5x - 2y
Use PEMDAS and work out the rest
x = 3 and y = 4
5 x = 5 x 3 = 15
2 y = 2 x 4 = 8
15( x ) - 8 (y) = 7
The answer is 7

Hope This Helps You!
Good Luck Studying :)
4 0
3 years ago
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The answers for number 5
VladimirAG [237]
The answer is c because of y=mx+b

5 0
3 years ago
You have inherited land that was purchased for $30,000 in 1960. The value of the land increased by approximately 5% per year. Wh
Alexxandr [17]

Answer:

  $361,223

Step-by-step explanation:

Each year, the value is multiplied by 1+5% = 1.05. After 51 years, it has been multiplied by that factor 51 times, so is now ...

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6 0
3 years ago
0.00012 in scientific notation
Vladimir [108]

Answer:

1.2⋅10  

−4

Step-by-step explanation:

7 0
2 years ago
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