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djverab [1.8K]
3 years ago
13

The mean of a set of data is 3.77 and its standard deviation is 3.39. Find the z score for a value of 6.19

Mathematics
1 answer:
melomori [17]3 years ago
6 0
Z = (x - mu)/sigma
z = (6.19 - 3.77)/3.39
z = 0.71386430678467
z = 0.71

The approximate z score, rounded to two decimal places, is 0.71
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PLEASE EXPLAIN <br> I wil give brainiest
Advocard [28]

Answer: (-2, -2)

Step-by-step explanation:

Reflection over the x-axis: (x, y) → (x, -y)

(-2, 2) → (-2, -2)

x would remain the same but the y would turn negative since we're reflecting over the x-axis. The x never changes in this situation but since we're flipping it over the x-axis, they y has to be negative.

Hope this helps!

8 0
3 years ago
Alicia borrowed $15,000 to buy a car. She borrowed the money at 8% for 6 years
myrzilka [38]

Answer:

She have to pay the bank at the end of the 6 years = 222000$

Step-by-step explanation:

Formula applied in this case where price, interest rate and time duration is mentioned.

Interest = prt/100

Substituting all the given values in the formula.

interest = 15000 * 6 * 8/100

150 * 6 * 8 = 7200

Interest + 15000 = 15000 + 7200 = 222000$ has to pay the total.

In this question amount is 15000 multiply by 6 and by 8 then divide it by 100 so we get the interest then we add it in to amount so we get an answer that is total amount which he has to pay.                                                                           Hope this helps! :P PLZ GIVE ME BRAINLIST

7 0
3 years ago
If g(x)= square root of 3-5x, find the domain of g'(x).
BaLLatris [955]

Answer:

domain: x>3/5

Step-by-step explanation:

First we need to derive our function g(x) to get a new function g'(x)

To do this we will have to apply chain rule because we have an inner and outer functions.

Our G(x) = square root(3-5x)

Chain rule formula states that: d/dx(g(f(x)) = g'(f(x))f'(x)

where d/dx(g(f(x)) = g'(x)

g(x) is the outer function which is x^1/2

f(x) is our inner function which is 3-5x

therefore f'(x)= 1/2x^(-1/2) and f'(x) = -5

g'(f(x)) = -1/2(3-5x)^(-1/2)

Applying chain rule then g'(x) = 1/2 (3-5x)^(-/1/2)*(-5)

But the domain is the values of x where the function g'(x) is not defined

In this case it will be 3-5x > 0, because 3-5x is a denominator and anything divide by zero is infinity/undefined

which gives us x >3/5

5 0
4 years ago
Read 2 more answers
What is the value of -3/4^-4
VLD [36.1K]

Answer:

-786

Explanation:

Move 4^-4 to the numerator using the negative exponent rule 1/x^-n = x^n

<em>-(3×^4)</em>

Raise 4 to the power of 4.

<em>-(3×256)</em>

Multiply 3 by 256.

<em>-1×768</em>

Multiply -1 by 768.

<em>-768</em>

3 0
4 years ago
Sooo..... can anybody help.....
Margaret [11]
V= wlh so the answer is 56.25 or 56 1/4
4 0
3 years ago
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