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larisa86 [58]
3 years ago
12

~!!!!HELPPPPPPP IM IN 7TH GRADE LEARNING 9TH AND 8TH GRADE MATH !!!!~

Mathematics
1 answer:
const2013 [10]3 years ago
4 0

Answer:

See below.

Step-by-step explanation:

You don't show what the function is, but I'll explain how to do it.

The average rate of change of function f(x), from x = a to x = b, is given by the fraction:

\dfrac{f(b) - f(a)}{b - a}

Since I don't know what the function is, I cannot evaluate the function at x = a and at x = b, which in your case are x = 2 and x = 3, but you can do it.

Here are the steps you need to do:

1) Evaluate the function at x = 3. Get a value for f(3).

2) Evaluate the function at x = 2. Get a value for f(2).

3) Evaluate the following fraction, after writing the values for f(3) and f(2) that you found in steps 1) and 2) above.

\dfrac{f(3) - f(2)}{3 - 2}

The denominator above is easy. It's just 1.

Try it and see what you get. You can write the function and your answer in the comments if you need more help.

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Ann uses 3/4 cup pecans to make 2 dozen banana muffins. How many cups of pecans would she use to make 5 dozen muffins
Lisa [10]

Answer:

1\frac{7}{8}cups

Step-by-step explanation:

2 dozen muffins = \frac{3}{4}cups

5 dozen muffins = \frac{5}{2} × \frac{3}{4}cups

                           = \frac{15}{8}cups

                           = 1\frac{7}{8}cups

5 0
3 years ago
160% of what number is 19.2
riadik2000 [5.3K]

Answer:

The number is 12

Step-by-step explanation:

Let x be the number

160/100 = 1.6

1.6 x = 19.2

x = 19.2 / 1.6

x = 12

7 0
3 years ago
Almost done guys I have 5 more questions
erastova [34]

Answer:the third one

Step-by-step explanation:

just time how much months,weeks, and years, for each amount

8 0
3 years ago
Which represents the area of ABC ?
disa [49]

A = \frac{1}{2} bc(sin A)

5 0
3 years ago
Read 2 more answers
Researchers measured the data speeds for a particular smartphone carrier at 50 airports. The highest speed measured was 76.676.6
faltersainse [42]

Answer:

Step-by-step explanation:

Researchers measured the data speeds for a particular smartphone carrier at 50 airports.

The highest speed measured was 76.6 Mbps.

n= 50

X[bar]= 17.95

S= 23.39

a. What is the difference between​ the carrier's highest data speed and the mean of all 50 data​ speeds?

If the highest speed is 76.6 and the sample mean is 17.95, the difference is 76.6-17.95= 58.65 Mbps

b. How many standard deviations is that​ [the difference found in part​ (a)]?

To know how many standard deviations is the max value apart from the sample mean, you have to divide the difference between those two values by the standard deviation

Dif/S= 58.65/23.39= 2.507 ≅ 2.51 Standard deviations

c. Convert the​ carrier's highest data speed to a z score.

The value is X= 76.6

Using the formula Z= (X - μ)/ δ= (76.6 - 17.95)/ 23.39= 2.51

d. If we consider data speeds that convert to z scores between minus−2 and 2 to be neither significantly low nor significantly​ high, is the​ carrier's highest data speed​ significant?

The Z value corresponding to the highest data speed is 2.51, considerin that is greater than 2 you can assume that it is significant.

I hope it helps!

3 0
4 years ago
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