MATHEMATICS HIGH SCHOOL

1. Find the value of the expression: 3a2 + 4, when a = -42. Find the value of the expression: 2a3, when a = -4

Answers

Answer 1

Answer:

Step-by-step explanation:

1. 3a2 + 4

3(-4)2+4

=-24+4

=-20

2. 2a3

2(-4)3

= (3)(−4)(3)

= −36

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You measured 6 cups of water and 5 cups of lemon juice to make how many total quarts of lemonade? quarts cups

Marta’s mother shared a funny video of their cat on the Internet. The total number of people who had viewed the video over the first 30 days could be modeled using the function f(x) = 33(1.3)x where x is the number of days the video has been online.About how many people had viewed the video once it had been online for 20 days?

190
858
6,271
86,460

Answers

In the question "Marta’s mother shared a funny video of their cat on the Internet. The total number of people who had viewed the video over the first 30 days could be modeled using the function f(x) = 33(1.3)x where x is the number of days the video has been online. About how many people had viewed the video once it had been online for 20 days?" The correct answer is 6271 because given the function f(x) = 33(1.3)^x where x is the number of days the video has been online. For x = 20 days: f(20) = 33(1.3)^20 = 33(190.0496377) = 6,271

By evaluating the exponential equation we will see that the correct option is 6,271.

How many people viewed the video after 20 days?

We know that the number of people that view the video is given by:

$f(x) = 33*(1.3)^x$

Where x is the number of days.

Then, we just need to evaluate the function in x = 20, we will get:

$f(20) = 33*(1.3)^(20) = 6,271$

So we conclude that after 20 days, 6,271 people saw the video.

If you want to learn more about exponential equations:

brainly.com/question/11832081

#SPJ5

How do you find a side length of a cube with the surface area of one face (64cm)

Answers

Fact #1:
A cube has six faces.

Fact #2:
Every one of them has the same area.

Fact #3:
The surface area of each face is (the length of the cube's side)²

Now that I look at this one more carefully, the only thing you need to know
to solve it is Fact #3. (But you can keep the others and save them for later.)

The surface area of each face is (the length of the cube's side)²

64 is the (length of the cube's side)²

Can you find a number that gives you 64 when you multiply it by itself ?
That's the length of the cube's side.

Hint: If you don't get ' 8 ', work on it a little more.

A dot plot labeled Times Riding a Roller Coaster goes from 1 to 6. 1 has 5 dots, 2 has 4 dots, 3 has 6 dots, 4 has 3 dots, 5 has 4 dots, and 6 has 1 dot. You asked amusement park visitors the question "How many times did you ride a roller coaster today?" as they left the park. The dot plot shows the results Of those surveyed, how many people rode a roller coaster 5 times? people

Answers

4 times

I just took the quiz

Answer:

4 people

Hope this helps! You got this!!!!

How do you write(−∞,8),(10,∞),as an inequality? A. x < 8 or x > 10
B. x < 10 or x > 8
C. x < 8 and x > 10
D. x < 10 and x > 8

Answers

Answer:

The answer is the option A

$x< 8$ or $x>10$

Step-by-step explanation:

we know that

The interval -----> (-∞,8)

Is all real numbers less than $8$

$x<8$

The interval -----> (10,∞)

Is all real numbers greater than $10$

$x>10$

The expression (-∞,8) U (10,∞) represent the inequality

$x< 8$ or $x>10$

see the attached figure to better understand the problem

(−∞,8),(10,∞) is equal to x < 8 οr x > 10

XZ=15 and the perimeter of XWZ is 50. what is the length of WZ?

Answers

Assuming that this is an Isosceles Triangle which has 2 sides equal, then we can assume as well that XZ being the base of 15 and the total perimeter is XWZ = 50.

Perimeter = X + W + Z

Therefore;

XWZ (50) – XZ (15) = 35

Since we are assuming that this is an Isosceles triangle then 2 sides should have equal distance.

35 / 2 = 17.5

Hence, XW = 17.5 and ZW = 17.5

Perimeter = 15 + 17.5 + 17.5 = 50

Find x of this shape.