I really need help on this one. Help please

Subtract the second equation from the first 6x + 5y =16 - (6x + 2y=10)

Akimi4 [234]

Answer:

3x = 6

Step-by-step explanation:

Combine:

6x + 5y =16

- (6x + 2y=10)

--------------------

3y = 6, so that y = 2 (We weren't actually asked to find the solution.)

5 0

3 years ago

Which expression can be used to find the value of X?

IRINA_888 [86]

Use the Law of Sines to find side b.
b / sin(B) = a / sin(A)
b / sin(32°) = 11 / sin(47°)
b = (sin(32°) x 11) / sin(47°) <---- You would use this, so rewritten
11(sin(32))/sin(47) would be the expression, or answer B.)

BTW b = 7.970

Hope this helps!

6 0

2 years ago

Read 2 more answers

In the library on a university campus, there is a sign in the elevator that indicates a limit of 16 persons. Furthermore, there

yan [13]

Answer:

Explained below.

Step-by-step explanation:

According to the Central Limit Theorem if an unknown population is selected with mean μ and standard deviation σ and appropriately huge random samples (n > 30) are selected from this population with replacement, then the distribution of the sample means will be approximately normally.

Then, the mean of the sample means is given by,

$\mu_{\bar x}=\mu$

And the standard deviation of the sample means is given by,

$\sigma_{\bar x}=\frac{\sigma}{\sqrt{n}}$

a

The expected value of the sample mean of their weights is same as the population mean, μ = 1515 lbs.

b

The standard deviation of the sampling distribution of the sample mean weight is:

$\sigma_{\bar x}=\frac{\sigma}{\sqrt{n}}=\frac{25}{\sqrt{16}}=6.25$

c.

The average weights for a sample of 16 people will result in the total weight exceeding the weight limit of 2500 lbs. is:

$\text{Average Weight}=\frac{2500}{16}=156.25$

d

Compute the probability that a random sample of 16 persons on the elevator will exceed the weight limit as follows:

$P(\bar X > 156.25)=P(\frac{\bar X-\mu_{\bar x}}{\sigma_{\bar x}}>\frac{156.25-151}{6.25})\\\\=P(Z>0.84)\\\\=1-P(Z$

4 0

2 years ago

I NEED HELP!!

beks73 [17]

Answer:

x=x

Step-by-step explanation:

4x-6+2x=3(2x-2)

4x+2x-6=6x-6

4x+2x=6x

6x=6x

x=x

3 0

2 years ago

Read 2 more answers

Please help me I’m stuck.

Svetlanka [38]

Answer:

Step-by-step explanation:

We will use the general area formula for finding the area of triangle when you are given information for SAS, which we have been.

$A=\frac{1}{2}absinC$ , where a and b are the given side lengths and C is the included angle. You can ONLY use this when you have the info for SAS in a triangle. For us,

a = 17, b = 15 and C = 35 degrees. Filling in:

$A=\frac{1}{2}(17)(15)sin35$

Do that on your calculator in degree mode and you'll find the area to be

73.1 meters squared

6 0

3 years ago