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Olin [163]
3 years ago
5

15w2+62w+63=0 Can you help me

Mathematics
1 answer:
anzhelika [568]3 years ago
7 0

Answer:

w=-7/3 and w=-9/5

Step-by-step explanation:

Given: 15w^2+62w+63=0

Factor: (3w+7)(5w+9)=0

Zero Product Property: 3w+7=0 and 5w+9=0

Solve each equation: w=-7/3 and w=-9/5

Let me know if you would like me to explain more.

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Cari knows that a certain species of fish need 240 cubic feet of water in their tank.the tank has a height of 12 feet and a widt
pochemuha

The equation that can be used to find the length of the tank is 240 = l × 12 × 10

<h3>How to find the volume of rectangular prism?</h3>

The volume of a rectangular prism can be found as follows:

volume of rectangular prism = lwh

where

  • l = length
  • w = width
  • h = height

Therefore,

volume of rectangular prism = lwh

volume of rectangular prism = 240 ft³

h = 12 ft

w = 10 ft

Therefore, the let's find the length of the tank.

240 = l × 12 × 10

240 = 120l

divide both sides by 120

l = 240 / 120

l = 2

learn more on volume here:brainly.com/question/21308574

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8 0
1 year ago
You have just used the network planning model and found the critical path length is 30 days and the variance of the critical pat
ollegr [7]

Answer: The probability that the project will be completed in 33 days or less is equal to<u> </u><u>0.73</u> .

Step-by-step explanation:

We assume that this is a normally distribution.

Given : The critical path length is 30 days .

i.e. Population mean = \mu=30

Variance : \sigma^2=25

Then, standard deviation : \sigma=\sqrt{25}=5

Z-score :  z=\dfrac{x-\mu}{\sigma}

The value of z corresponding to 33 = z=\dfrac{33-30}{5}=0.6

Now, the p-value = P(x\leq33)=P(z\leq0.6)=0.7257469\approx0.73

Hence, the probability that the project will be completed in 33 days or less is equal to 0.73.

6 0
3 years ago
Read 2 more answers
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Answer:

Step-by-step explanation:

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43% of 300 is what number?

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12% of what number is 43?

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43 is what percent of 106?

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What percent of 43 is 6?

14%

3 0
3 years ago
Find the average rate of change for the given function from x = 1 to x = 2.
Akimi4 [234]

Answer:

d. 2

Step-by-step explanation:

The average rate of change is found from ...

... (f(x2) -f(x1))/(x2 -x1) = (5 - 3)/(2 -1) = 2/1 = 2

3 0
3 years ago
A mountain has a 20 degree slope, and is 1 mile tall. How far do you need to hike to reach the summit?
netineya [11]

Answer:21

Step-by-step explanation:

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