MATHEMATICS HIGH SCHOOL

A rectangle measures fourteen centimetrers by four centimetres what is its area

Answers

Answer 1
Answer: The formula for finding the area of a rectangle is:
\sf area = length * width

Here we are given that the length is 14 cm, and the width is 4 cm.

So the are will be:

\sf area = 14~cm * 4~cm\n\n\boxed{\sf{area = 56 cm^2}}
Answer 2
Answer: The rectangles area is 56 cm. messed it up the first time!! lol

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In the data set below, what is the mean absolute deviation?4,9,2,9,2,2,7

If the answer is a decimal, round it to the nearest tenth.

Answers

Answer:

2.9 (2.85)

Step-by-step explanation:

Simplify (-80/-20)
-4
4
-40
40

Answers

Answer:

4

Step-by-step explanation:

the negatives cancel and 80/20 equals 4

Answer:

-80/-20=80/20=4

Step-by-step explanation:

Which of the following statements is true?A. Both the square root of 15 and the square root of 0.001 are rational.

B. Both the square root of 15 and the square root of 0.001 are irrational.

C. The square root of 15 is rational and the square root of 0.001 is irrational.

D. The square root of 15 is irrational and the square root of 0.001 is rational.

Answers

Answer:

Option D is right.

Step-by-step explanation:

Given are four statements and we have to find which one is true.

A) 15 is not a perfect square and hence square root of 15 is not rational. Incorrect.

B) While 15 has irrational root 0.0001 is the square of 0.01 hence the square root of second is rational hence incorrect

C) Since 15 is not a perfect square and hence square root of 15 is not rational. Incorrect

D) The square root of 15 is irrational and the square root of 0.001 is rational.

is the only correct option

For the rational equation,(x^(2)+5x+6)/(x+3)=1 , what is a valid value of x?

Answers

Answer:

-3 or -1 is a valid value for x

Step-by-step explanation:

We start by cross multiplying;

So the expression becomes;

x^2 + 5x + 6 = 1(x + 3)

x^2 + 5x + 6 = x + 3

x^2 + 5x -x + 6-3 = 0

x^2 + 4x + 3 = 0

x^2 + x + 3x + 3 = 0

x(x + 1) + 3(x + 1) = 0

(x + 3)(x + 1) = 0

x + 3 = 0 or x + 1 = 0

x = -3 or x = -1

Evaluate the expression for the given value of the variable(s). -x 2 - 4x; x = -3

A. 11
B. 3
C. -17
D. -1

Answers

-x^2 - 4x when x = -3
-(-3)^2 -4(-3)
= - 9 + 12 
= 3

answer is B. 3 

PLEASE HELP!!!!!!Which of the following experiments could be used to simulate an event in which the probability of success, P(success), is 0.65 and the number of successes out of 20 events is desired?

A, Use a spinner that is divided into five equal parts. Choose three colors for successful; the other two colors represent unsuccessful. Spin the spinner 20 times, once for each event.

B. Use a random number table consisting of the digits 0 through 9, with digits 0 through 3 representing successful and the remaining digits, 4 through 9, representing unsuccessful. Choose 20 digits, one for each event.

C. Roll a 10-sided die. Let 1 through 5 represent successful and the values 6 through 10 indicate unsuccessful. Roll the die 20 times, once for each event.

D. Count out 65 yellow beads and 35 pink beads. Select 20 of these beads at random. Let a yellow bead represent successful and a pink bead represent unsuccessful.

Answers

the following experiments could be used to simulate an event in which the probability of success, P(success), is 0.65 and the number of successes out of 20 events is:

D. Count out 65 yellow beads and 35 pink beads. Select 20 of these beads at random. Let a yellow bead represent successful and a pink bead represent unsuccessful.

65 + 35 = 100
65/100 = 0.65
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