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3 years ago

Can someone please let me know what the answer is?

Mathematics

2 answers:

Artist 52 [7]3 years ago

8 0

Answer:

Step-by-step explanation:

$\dfrac{\sqrt{a}}{\sqrt{b}}=x\\\\Take \ square \ both \ sides,\\\\(\dfrac{\sqrt{a}}{\sqrt{b}})^{2}=x^{2}\\\\x^{2}=\dfrac{a}{b}$

Brilliant_brown [7]3 years ago

3 0

Answer:

Step-by-step explanation:

I'm not 100% sure but since when you remove the square roots on a and b, you have to add it to X

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Please someone help me solve this. in graphic method.

fiasKO [112]

Answer:

just graph it mate

Step-by-step explanation:

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4 years ago

√60 <br> Simplify this please. Thanks

Nana76 [90]

Answer:

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3 years ago

Read 2 more answers

Last year, a soft drink manufacturer had 22% of the market. In order to increase their portion of the market, the manufacturer h

N76 [4]

Answer:

Critical value zc = 1.6449.

As the test statistic z=1.3881 is smaller than the critical value zc=1.6449, it falls in the acceptance region and the null hypothesis is failed to be rejected.

Step-by-step explanation:

This is a hypothesis test for a proportion.

The claim is that more than 22% of the population will like the new soft drink.

Then, the null and alternative hypothesis are:

$H_0: \pi=0.22\\\\H_a:\pi>0.22\\$

The significance level is 0.05.

The sample has a size n=400.

The sample proportion is p=0.25.

$p=X/n=100/400=0.25$

The standard error of the proportion is:

$\sigma_p=\sqrt{\dfrac{\pi(1-\pi)}{n}}=\sqrt{\dfrac{0.22*0.78}{400}}\\\\\\ \sigma_p=\sqrt{0.000429}=0.0207$

Then, we can calculate the z-statistic as:

$z=\dfrac{p-\pi-0.5/n}{\sigma_p}=\dfrac{0.25-0.22-0.5/400}{0.0207}=\dfrac{0.0288}{0.0207}=1.3881$

As this is a right-tailed test, there is only one critical value and it is, for a significance level of 0.05, zc=1.6449.

As the test statistic z=1.3881 is smaller than the critical value zc=1.6449, it falls in the acceptance region and the null hypothesis is failed to be rejected.

3 0

3 years ago

I need to find domain and range for this piecewise function.

dolphi86 [110]

Answer:

a) Domain is from [-3,3] U [4,0)

b) Range is From (-2,2]

Step-by-step explanation:

a) To find the domain look at the x-axis where you find out that the it starts at -3 with dot( included) and ends till 3 and 4 included till 5 which is hole and not included.

b) To find the range look at the y-axis where you start from bottom -2 not included till 2 which is included.

6 0

3 years ago

Ted Williams made deposits of $500 at the end of each year for eight years. The rate is 8% compounded annually. The value of Ted

Leviafan [203]

Answer:

The value of Ted's annuity at the end of eight years is $5318.3138.

Step-by-step explanation:

Given : Ted Williams made deposits of $500 at the end of each year for eight years. The rate is 8% compounded annually.

To find : The value of Ted's annuity at the end of eight years ?

Solution :

The future value of an ordinary annuity is given by,