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Shkiper50 [21]
3 years ago
10

What is the square root of 405x^3​

Mathematics
1 answer:
blagie [28]3 years ago
6 0

Answer:

9x sqrt 5x

Step-by-step explanation:

Simplify the radical by breaking the radicand up into a product of known factors.

9x√ 5x

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he number of square feet per house are normally distributed with an unknown population mean and standard deviation. If a random
Rama09 [41]

Answer: 1.300228

Step-by-step explanation:

The t-score we use for the confidence interval is two-tailed , i.e. the  t-score should be used to find a (1-\alpha) is given by :-

t_{n-1, \alpha/2}, where n is the sample size.

Given : Level of confidence: 1-\alpha: 0.80

Significance level : \alpha: 1-0.80=0.20

Sample size : n= 47

Then, degree of freedom : n-1=46

Now by using standard normal t-distribution table,

t_{n-1, \alpha/2}=t_{46, 0.10}=1.300228

Hence, the t-score should be used to find a 80% confidence interval estimate for the population mean = 1.300228

4 0
3 years ago
NEEP HELP QUICKLY PLEASE
almond37 [142]

Answer:

Axis of symmetery is x=-3

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
The bottom of a rectangular swimming pool has an area of 150 square meters and a perimeter of 50 meters. What are the dimensions
AysviL [449]

The  dimensions of the pool is 15m by10m

<h3>Area and perimeter of rectangle</h3>

A pool is rectangular in nature. If a rectangular swimming pool has an area of 150 square meters and a perimeter of 50 meters, then;

lw = 150

2(l+w) = 50

l + w = 25

where

l is the length

w is the width

From the equation 3

l = 25 - w

Substitute into 1

(25-w)w = 150
25w-w² = 150
w²-25w+150 = 0
w²-10w-15w+150 = 0

Factor

w(w-10)-15(w-10) = 0

w = 10 and 15

l = 150/10 = 15

Hence the  dimensions of the pool is 15m by10m

Learn more on dimension here: brainly.com/question/26740257

#SPJ1

7 0
2 years ago
A rocket is launched from atop a 104-foot cliff with an initial velocity of 110 ft/s. A. Substitute the values into the vertical
miv72 [106K]

Answer:

7.68 s

Step-by-step explanation:

The vertical motion formula is:

h_{t} = h_{0} + v_{0}t - \frac{gt^{2}}{2}

<u>Where:</u>

h(t): is the final height = 0

h(0): is the height of the cliff = 104 foot

v(0): is the initial velocity = 110 ft/s

g: is the gravity = 9.8 m/s² = 32.15 ft/s²

Hence, from the vertical motion formula we can find the time that will take the rocket to hit the ground:

0 = 104 + 110*t - \frac{32.15t^{2}}{2}

0 = 104 + t(110 - 16.08t)

We have two solutions:

t₁= -0.84 s

t₂ = 7.68 s

We will take the positive value, thus the time that will take the rocket to hit the ground is 7.68 s.

I hope it helps you!

4 0
3 years ago
Suppose a life insurance company sells a $240,000 one year term life insurance policy to a 25-year old female for $210. The prob
skelet666 [1.2K]

Answer:

$112.08 every year.

Step-by-step explanation:

Let's suppose a game in which we bet a certain amount of money ''A'' to a certain result and the probability of that result is ''p''. If the prize that we get is ''P'' therefore the expected value of gain is  :

E=p(P-A)+(1-p)(-A)=pP-A

Now,let's suppose that the female is ''betting on her death'' ⇒

P(she survives) = 0.999592

P(she doesn't survive) = 1 - 0.999592=4.08(10^{-4})

E(25-year old female) = 4.08(10^{-4}).(240000)-210=-112.08

The negative sign of E is important.It means that every year the 25-year old female will lose $112.08.

Therefore, the expected value of this policy to the insurance company is $112.08 every year.

5 0
3 years ago
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