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ASHA 777 [7]
3 years ago
13

Construct and interpret a 95% confidence interval estimate for the difference in the mean number of cell phone calls per month f

or 18-24-year-olds and 45-54-year-olds.
Mathematics
1 answer:
dsp733 years ago
5 0

Answer:

25 per month

Step-by-step explanation:

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Evaluate -32 + (2-6)(10).
Sergio039 [100]

Answer:

-72

Step-by-step explanation:

-32 + (2-6)(10).

PEMDAS

parentheses first

-32 + -4*10

Then multiply

-32 -40

Then subtract

-72

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Does anyone know the answer
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Use the discriminant to describe the roots of each equation. Then select the best description. 2m2 + 3 = m.
Tpy6a [65]

The roots of the equation , 2m^{2}+3=m, are non real roots.

<h3>Discriminants are what?</h3>

The quadratic formula's discriminant is represented by the square root symbol b^{2}-4ac. If there are two solutions, one solution, or none at all, the discriminant informs us.

As of now, 2m²+3=m we need to find the kind of roots they have.

2m²+3=m

2m²-m+3=0

Here, we can derive the following values from the equation:

a = 2, b = -1, c = 3

An equation's discriminant is stated as:

D = b²-4ac

D = (-1)(-1) - 4(2)(3)

D = 1 - 24

D = -23

Discriminant can determine the kind of roots that the equation contains.

In this instance, the discriminant is below 0.

The equation's roots are complex conjugates when D < 0.

Hence the roots for the equation are non real roots.

To get more information about discriminant follow the link:

https://brainly.in/question/27214502

#SPJ4

4 0
1 year ago
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Help me please! it’s short and you don’t have to explain it
OLga [1]

Answer:

c

Step-by-step explanation:

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PLS HELP!! I WILL GIVE THE FIRST GOOD ANSWER BRAINLIEST!!!
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Step-by-step explanation:

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