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Rus_ich [418]
3 years ago
8

This table shows values that represent an exponential function. What is the average rate of change for this function for the int

erval from x=3 to x=5? a. 8 b. 12 c. 6 d. 16

Mathematics
1 answer:
Pepsi [2]3 years ago
6 0

Answer:

\boxed{12}

Step-by-step explanation:

When x = 3, y = 13

When x = 5, y = 37

Subtract both y-values to find the change:

37 - 13 = 24

Average of the change:

\frac{24}{2} = 12

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Usama needs to read 6 novels each month.
Delicious77 [7]

Answer:

78 novels

Step-by-step explanation:

N= novels

M= month

6N = 1M

? = 13M

6N × 13M= 78NM

78NM ÷ 1M

cancel M, therefore;

the number of novels Usama needs to read in 13 months is 78.

5 0
2 years ago
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What is the denominator of the fraction 2over3
Nataly [62]
<span>The number below the line in a common fraction

The answer is 3</span>
7 0
2 years ago
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Evaluate 3x - 4y + 11 for x = -2 and y = -1
katrin [286]

Answer:

9

Step-by-step explanation:

Plug in -2 for x, and -1 for y, and solve:

3x - 4y + 11

3(-2) - 4(-1) + 11

Remember to follow PEMDAS. First, multiply. Remember, that when you multiply:

2 positive signs will result in a positive answer.

1 positive & 1 negative will result in a negative answer.

2 negative will result in a positive answer.

3 * -2 = -6

-4 * -1 = 4

-6 + 4 + 11 = 9

9 is your answer.

~

7 0
3 years ago
Read 2 more answers
The ages of students in a school are normally distributed with a mean of 15 years and a standard deviation of 2 years. Approxima
worty [1.4K]

We have been given that the ages of students in a school are normally distributed with a mean of 15 years and a standard deviation of 2 years.

We are asked to find the percentage of students that are between 14 and 18 years old.

First of all, we will find z-score corresponding to 14 and 18 using z-score formula.

z=\frac{x-\mu}{\sigma}

z=\frac{14-15}{2}

z=\frac{-1}{2}

z=-0.5

Similarly, we will find the z-score corresponding to 18.

z=\frac{18-15}{2}

z=\frac{3}{2}

z=1.5

Now we will find the probability of getting a z-score between -0.5 and 1.5 that is P(-0.5.

P(-0.5

Using normal distribution table, we will get:

P(-0.5

P(-0.5

Let us convert 0.62465 into percentage.

0.62465\times 100\%=62.465\%\approx 62.5\%

Therefore, approximately 62.5\% of the students are between 14 and 18 years old.

8 0
3 years ago
Read 2 more answers
Anyone please help me
Verdich [7]
9) Original price: $45 ; discount rate : 20% off
Discount     = $45 * 20%   =   $9
Sales price = $45 - $9       = $36

10) Original price : $450 ; discount rate : 30% off
Discount     = $450 * 30%  = $135
Sales price = $450 - $135 = $315

11) Original price : $48 ; discount rate : 15% off
Discount     =  $48 * 15%  =   $7.20
Sales price = $48 - $7.20 = $40.80

12) Original price : $150 ; discount rate : 25% off
Discount     = $150 * 25%      =   $37.50
Sales price = $150 - $37.50 = $112.50

13) Original price : $1,450 ; discount rate : 40% off
Discount     = $1,450 * 40%  = $580
Sales price = $1,450 - $580 = $870

14) Original price : $82 ; discount rate : 50% off
Discount     = $82 * 50% = $41
Sales price = $82 - $41  = $41
4 0
2 years ago
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