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Sever21 [200]
3 years ago
13

Amy can mop the store in 30 minutes. James can mop the store in 45 minutes. How long would it take them if they worked together?

Mathematics
1 answer:
zavuch27 [327]3 years ago
5 0
Solve the equation 1/30 + 1/45 = 1/x  

where x is the required time

multiply thru by 90x:-

3x + 2x  = 90

x = 90 / 5 = 18

answer 18 minutes
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A 7-pack of tickets to the zoo costs $78.61. What is the unit price?
vredina [299]

Answer:

$11.23

Step-by-step explanation:

To find the unit price divide the price by the product. For example, 12 ounces of juice costs $2.45. You divide $2.45 by 12 ounces. The unit price would be $0.20.

<em>I hope this helped you, if it did more than all the other answers that may be on your question, feel free to give me brainliest, I would really appreciate it.</em>

7 0
2 years ago
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What is the measure of angle A? A.118 B.120 C.130 D.720
stich3 [128]
The actual measure of angel A is actually 190
8 0
3 years ago
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a group of workers can plant 5 1/4 acres in four and a half days what is the unit rate in acres per day
dangina [55]

Divide to find the unit rate:

5.25 acres

---------------- = 1.1666... acres/day, or 1 1/6 acres/day.

4.5 days

7 0
3 years ago
Which equation is y = 2x2 – 8x + 9 rewritten in vertex form?
pishuonlain [190]

we have

y=2x^{2} -8x+9


Group terms that contain the same variable, and move the constant to the opposite side of the equation

y-9=2x^{2} -8x


Factor the leading coefficient

y-9=2(x^{2} -4x)


Complete the square. Remember to balance the equation by adding the same constants to each side

y-9+8=2(x^{2} -4x+4)

y-1=2(x^{2} -4x+4)


Rewrite as perfect squares

y-1=2(x-2)^{2}

y=2(x-2)^{2} +1-----> equation in vertex form


therefore


the answer is the option C

y=2(x-2)^{2} +1


3 0
3 years ago
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Transform the given standard form into vertex form and determine vertex.
Natalka [10]

Answer:

1. the vertex form of your function is f(x)= (x+-2)^2+-7

The vertex is at (2,-7)

2. So, the vertex form of your function is f(x)= (x+-7/2)^2 -41/4

The vertex is at (7/2, -41/4)

Step-by-step explanation:

7 0
3 years ago
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