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marshall27 [118]
3 years ago
9

Does 2 + 2 really equal 4?

Mathematics
2 answers:
Dennis_Churaev [7]3 years ago
5 0

Answer: yes

Step-by-step explanation:

2+2=4

nikitadnepr [17]3 years ago
5 0

Answer:

yes :)

Step-by-step explanation:

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The shadow of a tree measures 25 feet from its base. The angle of elevation to the Sun is 31º How tall is the tree? Round your a
grigory [225]

Answer: 15 feet

Step-by-step explanation:

Hi, since the situation forms a right triangle (see attachment) we have to apply the next trigonometric function.  

Tan α = opposite side / adjacent side

Where α is the angle of elevation to the sun, , the opposite side (x) is the height of the tree, and the adjacent side is the length of the shadow.

Replacing with the values given:  

Tan 31 = x /25

Tan 31 (25) =x

x = 15 feet

Feel free to ask for more if needed or if you did not understand something.  

4 0
4 years ago
Simplify 8 over negative 4 divided by negative 3 over 9. 6 −6 12 −12
skelet666 [1.2K]

Answer:

6

Step-by-step explanation:

Given

\frac{8}{-4} /  \frac{-3}{9}

Required

Solve

\frac{8}{-4} /  \frac{-3}{9}

We start by converting the division sign to multiplication

\frac{8}{-4} /  \frac{-3}{9} =\frac{8}{-4} *  \frac{-9}{3}

Then, we divide -9 by 3

\frac{8}{-4} /  \frac{-3}{9}=\frac{8}{-4} *  -3

Then, we divide 8 by -4

\frac{8}{-4} /  \frac{-3}{9}=-2 *  -3

Multiply -2 and -3 to give final result

\frac{8}{-4} /  \frac{-3}{9} = 6

Hence, \frac{8}{-4} /  \frac{-3}{9} is equivalent to 6

4 0
3 years ago
You guys are Smart, Answer me this. But I need It fast-
miss Akunina [59]

Answer:

E = 58

F = 32

G = 90

Step-by-step explanation:

3x + 31 + 5x -13 + 90 = 180

3x + 31 + 5x -13 = 90

8x = 90 - 31 + 13

8x = 72

x = 72 / 8

x = 9

E = 3(9) + 31 = 27+31 = 58

F = 5(9)-13 = 45 - 13 = 32

G = 90

8 0
3 years ago
Tell whether the ratios form a proportion. 21:3 and 16:6​
lesya692 [45]

Answer:

Step-by-step explanation:

21/3 = 16/6

126 ≠ 48

does not form a proportion

4 0
3 years ago
A bag contains 125 marbles. Some are red and the rest are black. There are 19 red marbles for every 6 black marbles. How many re
horsena [70]

Answer:

Um I think the answer is 114. There are 19 red marbles every for black marble. Therefore, there are 114 red marbles in the bag. Stay safe and have a great rest of the day!!! Hope this helps... :D Plz mark me brainliest...

4 0
3 years ago
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