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2 years ago

If x2 = 30, what is the value of x? +60 +15 130 O: 15

Mathematics

1 answer:

Tresset [83]2 years ago

7 0

Answer:

<h2>(+)(-)√30</h2><h2>#option c</h2>

Step-by-step explanation:

☆ REFER TO THE ATTACHMENT!

<h3>♰Hope it helps................</h3>

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What is the value of ?

azamat

Sure! So this is ready as "the cube root of 125". This basically means, "what number cubed can get me 125?"
Let's go through our options.
We can rule out D, as D cubed would be unreasonably big.
We can also rule out C, because 375 cubed is easily over 10000, you know this even if you haven't computed it all, just compute the 300 cubed.
We can rule out B, too. 41 squared is already over 125, therefore it can't be the answer.
Therefore our answer is A, 5. We can check that by cubing 5, and that indeed gets us 125.
Hope this helps!

4 0

3 years ago

Read 2 more answers

Given a population mean of 53.7 with a standard deviation of 1.3 and a sample size

a_sh-v [17]

Answer: A. 0.4899 B. 14

Step-by-step explanation:

If X = random variable

then, the standard deviation of the sampling distribution of X = $\dfrac{\sigma}{\sqrt{n}}$

GIven: $\sigma= 1.2, \n= 6$

The standard deviation of the sampling distribution of X = $\dfrac{1.2}{\sqrt{6}}=0.4899$

B. Let n be the sample size,

$0.325=\dfrac{1.2}{\sqrt{n}}\\\\\Rightarrow\ \sqrt{n}=\dfrac{1.2}{0.325}\\\\\Rightarrow\ \sqrt{n}=3.69230769231\\\\\Rightarrow\ n= (3.69230769231)^2=13.6331360947\approx 14$

Hence, the required sample size = 14

3 0

2 years ago

19)You are trying to decide between two apartments to rent.

VMariaS [17]

Answer:

ok so the first one is

1200x+2000

the second one is

1000x+3000

month 1.

a.3200

b.4000

month 2.

a.4400

b.5000

month 3.

a.5600

b.6000

month 4.

a. 6800

b. 7000

month 5.

a. 8000

b. 8000

They would equal out at 8000 in month 5

7 0

2 years ago

Given right triangle ABC with altitude BD drawn to hypotenuse AC. If AD=40 and AC=48, what is the length of AB in simplest radic

Natalka [10]

Answer:

8 $\sqrt{30}$

Step-by-step explanation:

AB^2 = AD * AC

we got the answer

8 0

2 years ago

Use the distributive property to remove the parentheses. -6(2v - 4w-6)

lilavasa [31]

Just multiple. -12v+24w+35

7 0

3 years ago