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lions [1.4K]
3 years ago
15

45% of a number is 180. Find the number

Mathematics
2 answers:
masha68 [24]3 years ago
8 0

Answer:

x = 400

Step-by-step explanation:

45% x X = 180

Or

45/100 x X = 180

x = 180 x 100/45

x = 400

KonstantinChe [14]3 years ago
4 0

Answer:

81

Step-by-step explanation:

The term "of" can be translated to multiplication in problems like this.

So it's essentially saying multiply 45% to 180 and give me the result.

45% can be written as 45/100 in fractions (45 percent, where cent means 100 and per means division). 45/100 can be written as 0.45 in decimal form.

Now the problem reads 0.45 X 180. Using a calculator, we can solve this and the result comes out to be 81

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So with this, I will be using the substitution method. With the first equation, substitute (y+3) into the x variable and solve for y:

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Next, now that we have the value of y, substitute it into either equation to solve for x:

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Will give brainliest to correct answer! Given that cos Ф=-8/17 and sin Ф is negative, determine the value of tan Ф.
Kipish [7]

Answer: option 3 is the correct answer

Step-by-step explanation:

Let us look at the various trigonometric ratios

Sin Ф = opposite side/ hypotenuse

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Tan Ф = opposite side / adjacent side

Therefore, tan Ф = sin Ф / cos Ф

This means that if cos Ф=-8/17 and sin Ф is negative, then the hypotenuse is negative

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