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mrs_skeptik [129]

3 years ago

10

How do I do this problem?

1 answer:

Elenna [48]3 years ago

8 0

Roots can be written as fraction exponents. An exponent of 1/2 means the square root.

$(12 x^{4})^{1/2} = \sqrt{12 x^{4} } \\ \\ \sqrt{12 x^{4} } = \sqrt{3*4*x^{2}*x^{2}} = 2x^{2} \sqrt{3}$

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Can someone please help me solve this?

jonny [76]

You want to get this equation in slope intercept form and you have,
x+5y=10
You must first move x to the other side and get
5y=-x+10
next we isolate y by dividing by 5
y= -1/5x+2
So, the slope is -1/2 and the yintercept is positive 2.
We can now plot the first point at (0,2). To find the next point, we add the x and y values of our slope to the values for our slope intercept so our second point is (0+5,2-1) or (5,1)

8 0

4 years ago

Is 5/11 equivalent to -5

Svet_ta [14]

Answer:

false, no

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

A local retailer claims that the mean waiting time is less than 8 minutes. A random sample of 20 waiting times has a mean of 6.3

rusak2 [61]

Answer:

The claim is not true

Step-by-step explanation:

We are given that A local retailer claims that the mean waiting time is less than 8 minutes.

$H_0:\mu=8$

$H_a:\mu$

A random sample of 20 waiting times has a mean of 6.3 minutes with a standard deviation of 2.1 minutes.

$\bar{x}=6.3$

s = 2.1

n = 20

Since n <30 and population standard deviation is unknown

So,we will use t test

So, $t=\frac{x-\mu}{\frac{s}{\sqrt{n}}}$

$t=\frac{6.3-8}{\frac{2.1}{\sqrt{20}}}$

t=-3.62

α = 0.01

Degree of freedom = df=n-1=20-1=19

$t_{df,\frac{\alpha}{2}}=t_{19,\frac{0.01}{2}}=2.861$

t calculated < t critical

So, we failed to reject null hypothesis

Hence the claim is not true

8 0

4 years ago

Daniel, Jim and David share £80 in the ratio 3:6:7 respectively. David gets the biggest share,

shutvik [7]

Answer:

Got my points deducted by a loser name PoeticAesthetics

Step-by-step explanation:

6 0

3 years ago

What is the least common denominator of the rational expressions below?

Lyrx [107]

Answer:

B.(x-6)

Step-by-step explanation:

12/(x^2 - 11x+30) - 43/(x^2-6x)

12/((x - 5) (x - 6)) - 43/x(x-6) [Factoring the denominator]

Both have x-6 common in the denominator,

4 0

3 years ago