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3 years ago

Mathematics is not my subject lol :(

Mathematics

1 answer:

Airida [17]3 years ago

5 0

Hey there! :D

Since Carol has 100 stamps, the percentages are like whole numbers.

24%= 24 stamps

22%= 22 stamps

25%= 25 stamps

29%= 29 stamps

This is only because she has 100, and the percentages are from 100. If it was 50, it would be much different. You would multiply .25 by 50 for the number of stamps. It was nice that it was 100.

So, now we just find Italy and England and subtract them.

25-22= 3

3 stamps. <== the answer

I hope this helps!
~kaikers

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On a test that has a normal distribution, a score of 60 falls two standard deviations above the mean, and a score of 42 falls on

Sergeu [11.5K]

Answer:

Step-by-step explanation:

Given that:

$A \ score \ of \ 60 \ falls \ two \ standard \ deviations \ above \ the \ mean \\ \\ A \ score \ of \ 42 \ falls \ one \ standard \ deviation \ below \ the \ m ean$

The interval for score = 60 - 42 = 18

If we divide it by the 3 standard deviations; the interval result into

= 18/3

= 6

So, the standard deviation is 6, and the mean = 42 + 6

= 48

7 0

2 years ago

Read 2 more answers

Find the precent of each number.

ELEN [110]

Answer:

A.)377.6

B.)7.084

C.)1107.6

D.)680.8

Step-by-step explanation:

6 0

3 years ago

First correct response gets brainliest

Simora [160]

Answer:

x = 13

Step-by-step explanation:

This question is based on Secant Secant theorem.

Secant Secant theorem gives us the following formula:

(AB + BD)AB = (AC + CE).AC

From the above question we have the following parameters

AB = 5

BD = x

AC = 7.5

CE = 4.5

Hence,

(AB + BD)AB = (AC + CE).AC

(5 + x)5 = (7.5 + 4.5)7.5

25 + 5x = 90

Collect like terms

5x = 90 - 25

5x = 65

x = 65/5

x = 13

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2 years ago

Which of the following is not part of the Triangle Proportionality Theorem?

natka813 [3]

Answer:

A. AA Similarity Theorem . True

B. Two sides divided proportionally. True

C. A parallel line to one side of a triangle. True

D. A perpendicular line to one side of a triangle. False

Step-by-step explanation:

The Triangle Proportionality Theorem says that if a line is parallel to one side of a triangle, then it splits the other two sides into proportional sections.

Now, here the given statements are:

A. AA Similarity Theorem

TRUE, as the angles opposite to equal sides are equal.

And if lines are divided proportionally, both the triangles are Similar by AA similarity theorem.

B. Two sides divided proportionally.

TRUE,as the other two sides of the triangle are divided proportionally by the parallel line.

C. A parallel line to one side of a triangle.

TRUE, as the parallel line divides the other two non- parallel sides in equal proportions.

D. A perpendicular line to one side of a triangle.

FALSE, this part is not required anywhere in the given theorem result.

3 0

2 years ago