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zubka84 [21]
4 years ago
6

a new type of pump can drain a certain pool in 6 hours. an older pump can drain the pool in 9 hours. how long will it take both

pumps working together to drain the pool?
Mathematics
1 answer:
Art [367]4 years ago
5 0

Answer:

if im correct 4.5 hours

Step-by-step explanation:

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Natalie is cutting construction paper into rectangles for a project. She needs to cut one rectangle that is 6 inches x 13 1/2 in
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Answer:

1. 81

2. 108 1/2

3. 189 1/2

Step-by-step explanation:

7 0
4 years ago
Consider the following statements:
Black_prince [1.1K]

Answer:

b. I and II are both false.

Step-by-step explanation:

I. For a significance level, the two tailed hypothesis is not always accurate than the one tailed hypothesis test. The hypothesis testing is carried to find out the correctness of a claim of a population parameter. The two tail hypothesis test which used both positive and negative tails of the distribution is not always more accurate than one tailed test.

II. The process of the point estimation involves the utilization of the values of a statistic which is obtained from the sample data to obtain the best estimate of a corresponding unknown parameter in the given population.

Hence, both the statements are false.

3 0
3 years ago
Determine the measure of ∠Q, rounded to the nearest tenth of a degree.<br> images attached.
const2013 [10]

Answer:

D

Step-by-step explanation:

Using the Sine rule in Δ QRS , that is

\frac{q}{sinQ} = \frac{r}{sinR} , that is

\frac{15}{sinQ} = \frac{12}{sin50.1} ( cross- multiply )

12× sinQ = 15 × sin50.1° ( divide both sides by 12 )

sinQ = \frac{15sin50.1}{12} , thus

Q = sin^{-1} ( \frac{15sin50.1}{12} ) ≈ 73.5° ( to the nearest tenth )

8 0
4 years ago
To determine a student’s overall test score for the semester, Ms. Lopez throws out the lowest test score and takes the average o
Ugo [173]

Answer:

80%

Step-by-step explanation:

I'm assuming you want the average of the class.

62 + 78 + 83 + 84 + 93

= 400

400/5

= 80

Therefore Victor's overall test score is 80%

6 0
3 years ago
<img src="https://tex.z-dn.net/?f=7%5C%3A%2B%5C%3A%5Cleft%286%5C%3A%5Ctimes%5C%3A52%5C%3A%2B%5C%3A3%5Cright%29" id="TexFormula1"
Alexxandr [17]

Answer :

= 7 + (6 \times 52 + 3) \\ =7+(312  + 3) \\ =7 + 315 \\= 322

8 0
3 years ago
Read 2 more answers
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