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aleksandr82 [10.1K]
3 years ago
6

Please help please help please help you

Mathematics
2 answers:
tatyana61 [14]3 years ago
4 0
40 students prefer vanilla. To get this answer you need to multiply 200 times 0.2 because you are trying to find 20%
Tomtit [17]3 years ago
4 0
I think it’s b. 20 but ur choice
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A drill can dig through rock at a rate of 2 1/2 inches per hour. How many hours will it take for the drill to reach five feet be
Gre4nikov [31]
5 feet is equal to 60 inches. 60 inches divided by 2.5 inches per hour means it would take 24 hours for the drill to reach five feet (assuming it maintains the same rate of digging)
7 0
3 years ago
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F (x) = (x + 5)º(x - 9)(x + 1)<br> 3
JulijaS [17]

Answer:

3x^3 - 11x^2 + 93x - 105

Step-by-step explanation:

(x+5) (x-9) (x+1) (3) FOIL (First, Outside, Inside, Last)...

x^2 - 9x + 5x - 35 (3x+3) Multiply

3x^3 + 3x^2 - 27x^2 - 27x + 15x^2 + 15x - 105x - 105 Combine Like Terms...

3x^3 - 11x^2 + 93x - 105

8 0
2 years ago
♦HURRY PLEASE!!! ♦<br><br> ↓<br> Don't worry about the answer choice that is highlighted : )
givi [52]

Answer:

B: {(3,1), (7,9)}

Step-by-step explanation:

For equation 2x-y=5, we can isolate y, so it's easier to solve later:

y = 2x - 5

y = (x - 4)^2

Now, notice that both equations are equal to y, so we can set them equal to each other:

(x-4)^2 = 2x-5

x^2-8x+16 = 2x - 5

x^2-10x+21=0

Now, we can factorize by finding 2 numbers that multiply to 21 and add up to -10:

(x-3)(x-7)=0

x=3 or x=7

Since B is the only one with the x values of 3 and 7, the answer must be B.

But to further check our answer, we can plug x back to any of the equations above to check for y:

(3-4)^2 = 1

(7-4)^2 = 9

Therefore, we can confirm that the answer is B.

7 0
3 years ago
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What do you do with fractions in finding absolute value
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Absolute value only removes the negative signs. Just multiply the numerator and the denominator


4 0
3 years ago
Nina makes $12 per hour at her job. She also earns commission. Last week she earned $78 in commission and made a total of $444.
Vesnalui [34]

Answer:

30.5 hours

Step-by-step explanation:

444-78=366

366/12=30.5

30.5 x 12= 366

7 0
3 years ago
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