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tangare [24]
3 years ago
5

“28 is 40% of what number?” i got 70, is that correct?

Mathematics
1 answer:
Vladimir79 [104]3 years ago
5 0

Answer:

70

You got it correct :)

Step-by-step explanation:

\frac{28}{y} =\frac{40}{100}

y × 40 = 100 × 28

40y = 2800

40y ÷ 40 = 2800 ÷ 40

y = 70

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Binomial Theorem
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Answer:

\frac{p^{4} x^{24}+6p^{2}q^{2}x^{12}+q^{4}+4p^{3}qx^{18}+4pq^{3}x^{6}}{x^{12} }

Step-by-step explanation:

3 0
2 years ago
PLEASEEE EXPLAIN AND HELP
Firdavs [7]

The length of the unknown sides of the triangles are as follows:

CD = 10√2

AC = 10√2

BC =  10

AB = 10

<h3>Triangle ACD</h3>

ΔACD is a right angle triangle. Therefore, Pythagoras theorem can be used to find the sides of the triangle.

  • c² = a² + b²

where

c = hypotenuse side = AD = 20

a and b are the other 2 legs

lets use trigonometric ratio to find CD,

cos 45 = adjacent / hypotenuse

cos 45 = CD / 20

CD = 1 / √2 × 20

CD = 20 / √2 = 20√2 / 2 = 10√2

20² - (10√2)² = AC²

400 - 100(2)  = AC²

AC² = 200

AC = √200 = 10√2

<h3>Triangle ABC</h3>

ΔABC is a right angle triangle too. Therefore,

  • AB² + BC² = AC²

Using trigonometric ratio,

cos 45 = BC / 10√2

BC = 10√2 × cos 45

BC = 10√2 × 1 / √2

BC = 10√2 / √2 =  10

(10√2)² - 10² = AB²

200 - 100 = AB²

AB² = 100

AB = 10

learn more on triangles here: brainly.com/question/24304623?referrer=searchResults

5 0
2 years ago
Determine if the statements below are true or false. Justify your answer. (a) If a fair coin is tossed many times and the last e
denis23 [38]

Answer:

(a) is False (b) is true (c) is true

Step-by-step explanation:

4 0
2 years ago
(-1)3 exponet is 3 help me please i dont want to fail
Natali5045456 [20]

Answer:

-1

i do not remember how to solve this but i just answered a question that had this problem in it on my algebra test and that is the right answer

8 0
3 years ago
a triangle with a perimeter of 36 inches is dilated with a scale factor of 2. what will be the perimeter of the image
sweet [91]

Answer:

18

Step-by-step explanation:

36/4=9  9/2=4.5  4.5+4.5+4.5+4.5=18

7 0
3 years ago
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