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Gennadij [26K]
3 years ago
13

What is the opposite of -(-23)

Mathematics
1 answer:
oee [108]3 years ago
7 0

Answer:

23?

Step-by-step explanation:

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Julia and George are saving for new bicycles. Julia adds $30 to her savings each week. George saves $45 each week. How much will
Tems11 [23]

Multiply the amount each one saves by the number of weeks they save:

Julia: $30 x 5 weeks = $150 total.

George : $45 x 5 weeks = $225 total.

8 0
4 years ago
URGENT!!!! Which of the following statements is not true?(1 point) A.) For a complex number written in the form a+bi, the value
baherus [9]

Answer:

The correct option is;

Non of the above

Step-by-step explanation:

Option A is correct when a + b·i is a complex number, the real part = a and the imaginary part = b

Option B.) For the complex number,  a + b·i, a and b are real number

Option C) When a number, a + b·i is a complex number, then b ≠ 0

Option D) Whereby real numbers are numbers of the form  a + b·i, where b = 0, therefore, a real number is a complex number with the imaginary part = 0 and every real number is a complex number.

7 0
3 years ago
Helpppppppppppppppppp
makkiz [27]

For this case we have the following system of equations:

8x-9y = -122\\-8x-6y = -28

To solve, we add both equations:

8x-8x-9y-6y = -122-28\\-15y = -150\\y = \frac {-150} {- 15}\\y = 10

We find the value of "x":

8x = -122 + 9y\\x = \frac {-122 + 9y} {8}\\x = \frac {-122 + 9 (10)} {8}\\x = \frac {-122 + 90} {8}\\x = \frac {-32} {8}\\x = -4

The solution is (-4,10)

ANswer:

Option C

5 0
3 years ago
A horse race has 13 entries. Assuming that there are no ties, what is the probability that the four horses owned by one person f
Olin [163]
Well, there are 13 places that each horse can place. That means the first place has 13 options, second place has 12 options, third place has 11 options, etc. Though, we only care up to fourth place. When doing probability, we're multiplying in this case. So, here's the process:

How many ways all the horses can place = 13! = 6227020800
How many ways the first four places can place = 13*12*11*10 = 17160

Divide the second by the first and multiply by 100 for the probability as a percent:

(17160/6227020800)*100% ≈ <span>0.00027557319%
</span>
5 0
3 years ago
Read 2 more answers
Find the value of x and the value of y.
Zina [86]
The answer is B. x = 65, y = 10.
6 0
4 years ago
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