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Rzqust [24]
3 years ago
13

Help me please i am very lost

Mathematics
1 answer:
spayn [35]3 years ago
4 0

Answer:

y=−55x+985

Step-by-step explanation:

HOPE THIS HELPS!

if you need help with slope and y-intercepts theres alot of websites out there with alot of good info.

wish you luck!

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The standard IQ test is designed so that the mean is 100100 and the standard deviation is 1515 for the population of all adults.
Natalija [7]

Answer:

The sample size should be approximately 151.      

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = 100

Population standard deviation, σ = 15

We have to evaluate the sample size, n.

Alpha, α = 0.10

Confidence interval:

\mu \pm z_{critical}\frac{\sigma}{\sqrt{n}}

Putting the values, we get,

z_{critical}\text{ at}~\alpha_{0.10} = \pm 1.64

100 \pm 1.64(\frac{15}{\sqrt{n}} ) = (98,102)

100 \pm 1.64(\displaystyle\frac{15}{\sqrt{n}} ) = (98,102)\\\\1.64(\frac{15}{\sqrt{n}} ) = 2\\\\n = 151.29 \approx 151

Thus, the sample size should be approximately 151.

6 0
3 years ago
HELP WILL MARK RIGHT ANSWER BRAINLIEST
Elden [556K]

Answer:

Step-by-step explanation:

Lack of information

4 0
3 years ago
Complete the sequence: 1, 1, 2, 3, 5, ____, ____, ____.
Elza [17]

Answer:

8, 13, 21

Step-by-step explanation:

This is a part of the Fibonacci sequence. it is where you add the two previous numbers together to get the third.

<u><em>Ex. </em></u>

<u><em>1+1 = 2</em></u>

<u><em>1+2 = 3</em></u>

7 0
4 years ago
Which equation can be solved using the expression StartFraction negative 3 plus-or-minus StartRoot (3) squared + 4 (10) (2) EndR
katen-ka-za [31]

Answer: B.  2 = 3x + 10x2

Step-by-step explanation:

This is the concept of quadratic equations; We required to find the type of equation that can be solved using the model that has been used to solve the equation such that the answer is:

[-3+-sqrt(3^2+4(10)(2))]/(2(10))

The formual that was applied here was a quadratic formula given by:

x=[-b+\-sqrt(b^2-4ac)]/2a

whereby from the our substituted values above,

a=10,b=3 and c=-2

such that the quadratic equation will be:

10x^2+3x-2 

3 0
3 years ago
Read 2 more answers
What times what equals 225?
defon
I got 5 times 45 because I multiplied by 5 to get my answer.
4 0
3 years ago
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