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Savatey [412]
3 years ago
14

A DJ charges $175 and $35 an hour, h, for parties. Which equation shows the total cost, C, for hiring the DJ? A. C = 175h + 35 B

. C = 35h + 175 C. C = (175 + 35)h D. C = 175 + 35 + h
Mathematics
1 answer:
Arlecino [84]3 years ago
7 0

Answer:

-98 x (175-34)

Step-by-step explanation:

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Use the identity i2 = -1 to compute the powers of i and complete the table.
mylen [45]
Hint:    \bf \begin{array}{llll}
i^{3}\to & i^2\cdot i^1\\\\

i^{4}\to & i^2\cdot i^2\\\\

i^{5}\to & i^2\cdot i^2\cdot i^1\\\\

i^{6}\to & i^2\cdot i^2\cdot i^2\\\\

i^{7}\to & i^2\cdot i^2\cdot i^2\cdot i^1\\\\

i^{4n}\to & (i^{4})^n\\\\

i^{4n+1}\to & (i^4)^n\cdot i^1\\\\

i^{4n+2}\to & (i^4)^n\cdot i^2\\\\

i^{4n+3}\to & (i^4)^n\cdot i^3
\end{array}
7 0
3 years ago
Find all zeros f(x) = 3x^2+8x+7
Artemon [7]

Answer:

Step-by-step explanation:

4 0
3 years ago
Assume that all (525)poker hands are equally likely. What is the probability that you will be dealt:
AlekseyPX

Answer:

There is 1.98% of probability of being dealt a flush in 5-card Poker

Step-by-step explanation:

To know the probability of a flush being dealt, we can calculate the number of cases when that happens and divide it by the total number of cases of poker hands that exist, naming A the event of a flush.

We will use combinations (nCr button on a calculator) to count the number of cases, because we don't care about the order (it is the same to be dealt a 2, 4, 6, 7 and 8 of hearts than the opposite order), being a flush the event when we take 5 cards out of 13 of the same suit, times 1 out of 4 possible suits and the total number of cases is taking 5 random cards out of 52.

P_{A} =\frac{Cases   Of Flush}{Hands} =\frac{\left(\begin{array}{ccc}13\\5\end{array}\right)*\left(\begin{array}{ccc}4\\1\end{array}\right)}{\left(\begin{array}{ccc}52\\5\end{array}\right)} =\frac{5148}{2598960}=0,00198\\

That means there is about a 2% of probability of being dealt a flush.

In other words, of every 16660 plays, 33 will be, on average, a flush

6 0
3 years ago
How do I find the properties of a parabola
Elanso [62]
The directrix of a parabola<span> is the horizontal line found by subtracting p p from the y-coordinate k k of the vertex if the </span>parabola<span> opens up or down. Substitute the known values of p p and k k into the formula and simplify. Use the </span>properties<span> of the </span>parabola<span> to analyze and graph the </span>parabola<span>.</span>
3 0
4 years ago
Choose yes or no to tell if each pair of expressions is equivalent. YES OR NO
AnnyKZ [126]
<h3>Answer:</h3>
  1. no
  2. yes
  3. no
  4. yes
  5. yes
<h3>Explanation:</h3>

The distributive property is useful both for collecting terms and for eliminating parentheses.

1. 3x +1/4 -x +1 1/2 = x(3 -1) +(1/4 +1 2/4) = 2x +1 3/4 ≠ 4x +1 3/4 (no)

2. 2(3x+1) = 2·3x + 2·1 = 6x +2 = 2 +6x (yes)

3. 3(x+1) -(1+x) = (x+1)(3 -1) = 2(x+1) = 2x +2 ≠ 2x +3 (no)

4. 4(x+1)-x-4 = 4x +4 -x -4 = x(4-1) +(4-4) = 3x +0 = 3x (yes)

5. 5.5 +2.1x +3.8x -4.1 = x(2.1 +3.8) +(5.5 -4.1) = 5.9x +1.4 = 1.4 +5.9x (yes)

3 0
4 years ago
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