MATHEMATICS HIGH SCHOOL

7. Find the value of:
a) The number when 40% of the number is 10

Answers

Answer 1
Answer:

Step 1) Set up a proportion

Proportion: percent / 100 = x / number

In context of the problem, the proportion is: 40 / 100 = 10 / number

Step 2) Cross-multiply and solve

100 x 10 = 40 x N

1000 = 40N

N = 25

Answer: The number is 25
Answer 2
Answer:

Answer:

25

Step-by-step explanation:

Lettheunknown number bex

40 \% * x = 10 \n (40x)/(100) = (10)/(1)

CrossMultiply

40x = 100 * 10 \n 40x = 1000

Divide both sides of the equation by40

(40x)/(40) = (1000)/(40)

Simplify

x = 25

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Match the proof . This is really hard.
​

Answers

Answer:

DBFEA

Step-by-step explanation:

Compare the table and equation. x y
4 12
5 15
6 18

Equation: y = 3x

Which representation has the greatest slope?

The equation has the greatest slope.
The table has the greatest slope.
The table and equation have the same slope.
Their slopes cannot be determined.

Answers

Answer:

The table and equation have the same slope

Step-by-step explanation:

we know that

The formula to calculate the slope between two points is equal to

m=(y2-y1)/(x2-x1)

Step 1

Find the slope of the table

we have

A(4,12)\ B(5,15)

Substitute the values

m=(15-12)/(5-4)

m=(3)/(1)=3

Step 2

Find the slope of the equation

we have

y=3x ------> the equation represent a linear direct variation

The slope is equal to m=3

therefore

The table and equation have the same slope

Answer:

the table and equation have the same slope

Step-by-step explanation:

took the test and got a 100% :)

A box plot was made to represent the number of matches won by 14 participants in a tennis tournament. The box plot was symmetric. Based on the box plot, which conclusion is most likely correct?A) There are no participants who won an exceptionally large or small number of matches compared to other participants.
B) The mean of matches won by participants is more than the median of matches won by participants.
C) Most of the participants won many matches, but some participants won very few matches compared to the others.
D) Most of the participants won very few matches, but some participants won many matches compared to the others.

Answers

If we have drawn a box plot to represent number of matches won by 14 participants in a tennis tournament, and got that the box plot was symmetric . It means

1 . There are equal number of values that is points obtained by 14 participants , on both side of a line drawn from the middle of the curve , there are equal number of points.

Symmetric means, → Median = Mean

→The point graph representing number of points obtained by 14 players is divided into two congruent parts or curves have equal areas.

So, we can conclude that

Option (A):There are no participants who won an exceptionally large or small number of matches compared to other participants.

Answer: The correct answer is option A.

2^1-x=3^2x-3 solve for X

Answers

Hello,

if the exact equation is

2^(1-x)=3^(2x-3)

==>(1-x)ln 2=(2x-3) ln 3

==>2x ln 3+x ln 2=ln 2 +3 ln 3

==>x=ln (2*3^3) / ln (2*3²)

==> x= ln(54)/ ln (18)

==>x ≈1,3800937....


if the equation is 2^1 -x  =3^2 *x -3 then

2-x=9x-3
==>10x=5
==>x=1/2

All of the following numbers are composite numbers except:

15
17
18
14

Answers

15, 18 and 14 are composite except 17 which is prime

your answer is B=17

hope I helped you

Which function below correctly illustrates the absolute value function

Answers

The answer is the second choice:
a, if a is greater than or equal to 0 and
-a, if a is less than or equal to 0

You can check this by testing out values.
The absolute value of 5 is 5 while the absolute value of -5 is -(-5) or 5. This follows the chosen function.
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the teacher said there was about a one in a million chance of obtaining a perfect score by guessing on a test where all questions were true or false. assuming the teacher was not exaggerating, about how many true-false questions were on this test?
What is 3/4 of 16/21