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3 years ago

How many solutions does the equation have? -11 = -|n|

Mathematics

2 answers:

Scrat [10]3 years ago

3 0

Answer:

There are two when n= 11 and n=-11

Step-by-step explanation:

Nataly [62]3 years ago

3 0

Answer:

2 solutions.

Step-by-step explanation:

-11 = -|n|

First divide both sides by -1:

|n| = 11 |n| means the absolute value of n, so n could be negative or positive.

So n can be 11 or -11.

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eleanor purchased $2568 worth of stock and paid her broker a 0.5% fee. She sold the stock when the stock price increased to 3928

Gnoma [55]

Answer:

Eleanor's net proceeds would be $1340.16.

Step-by-step explanation:

If Eleanor purchased $2568 worth of stock and paid a 0.5% broker fee, she would have to pay $12.84 for the service, which is what we get when we multiply her initial purchase by the percentage (0.005). When Eleanor sold the stock at $3928, she had to pay a flat fee of $7 for the trade, decreasing her overall profit by $7, or $3921. Subtracting her initial investment from the overall profit gives Eleanor a net proceed of $1340.16.

5 0

3 years ago

Vivian surveyed bicyclists in her community to see the average number of miles they biked per day. Her results are shown below.

Alex

Answer:

MAD of her data set is 4.

Step-by-step explanation:

Vivian surveyed bicyclists in her community to see the average number of miles they biked per day.

The data set is given below :

7, 10, 13, 4, 12, 21, 10, 3

$mean=\frac{\text{Sum of data set}}{\text{number of values}}$

$=\frac{(7+10+13+4+12+21+10+3)}{8}$

$=\frac{80}{8}$

= 10

$MAD=\frac{\sum |A_1-f_1|}{n}$

Data point Distance from mean

1 7 7 - 10 = | -3 | = 3

2. 10 10 - 10 = | 0 | = 0

3. 13 13 - 10 = | 3 | = 3

4. 4 4 - 10 = | -6 | = 6

5. 12 12 - 10 = | 2 | = 2

6. 21 21 - 10 = | 11 | = 11

7. 10 10 - 10 = | 0 | = 0

8. 3 3 - 10 = | -7 | = 7

Adding the distance = 3 + 0 + 3 + 6 + 2 + 11 + 0 + 7 = 32

MAD = $\frac{32}{8}$ = 4

MAD of her data set is 4.

Mean Absolute Deviation of this data tells about the variation of 4 miles biked each day by the bicyclists.

6 0

3 years ago

Solve for the formula for the indicated variable. Solve A=1/2bh for b.

choli [55]

B = 2A/h

The way you would get this is first by clearing the fraction. So in order to clear the fraction, you have to multiply the equation by the denominator.

2(A = 1/2bh)

2A = 1bh

2A = bh

Then you have to isolate the variable. So you'd divide bh by h in order to get b by itself. So you'd end up with:

2A/h = bh/h

2A/h = b

5 0

3 years ago

1. Find the next three term.<br> 3,6,12,24

Ivanshal [37]

Answer:

48 96 and 192

Step-by-step explanation:

you just have to multiply by two

3 0

3 years ago

A circle has its center at the origin and has a diameter of 24 units.

Colt1911 [192]

Answer:

x² + y² = 144

Step-by-step explanation:

The general equation of a circle is given as

(x - a)² + (y-b)² = r²

where a and b are the center of the circle along the x and y axis respectively and r is the radius of the circle.

Hence a circle that has its center at the origin and has a diameter of 24 units, we can deduce that the values of a,b are 0,0. Also,

radius = diameter/2

= 24/2

= 12 units

Hence the standard equation of the circle

(x - 0)² + (y - 0)² = 12²

x² + y² = 144

5 0

3 years ago