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3 years ago

I really need help with number nine

Mathematics

2 answers:

Trava [24]3 years ago

7 0

The answer would be:
C) 190

snow_lady [41]3 years ago

3 0

Take a more clear picture then I will help you

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Plzz help I have I noooo clue :(

iogann1982 [59]

The correct answer is C. Hope that helps!

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3 years ago

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Angles α and β are the two acute angles in a right triangle. Use the relationship between sine and cosine to find the value of β

Dimas [21]

Answer:

From given relation the value of β is 37.5°

Step-by-step explanation:

Given as :

α and β are two acute angles of right triangle

Acute angle have measure less than 90°

Now given as :

$sin(\frac{x}{2} + 2x)$ = $cos(2x +\frac{3x}{2})$

Or, $cos(90° - (\frac{x}{2}+2x))$ = $cos(2x +\frac{3x}{2})$

SO, $(90° - (\frac{x}{2}+2x))$ = $2x+\frac{3x}{2}$

Or, 90° = $2x+\frac{3x}{2}$ + $\frac{x}{2}+2x$

or, 90° = $\frac{4x}{2}$ + 4x

Or, 90° = $\frac{12x}{2}$

So, x = $\frac{90}{6}$ = 15°

∴ $sin(\frac{x}{2} + 2x)$ = $sin(\frac{15}{2} + 30)$

So, $sin(\frac{x}{2} + 2x)$ = sin $\frac{75}{2}$

∴ The value of Ф_1 = $\frac{75}{2}$ = 37.5°

Similarly $cos(2x +\frac{3x}{2})$ = $cos(30 +\frac{45}{2})$

So ,The value of Ф_2 = $\frac{105}{2}$ = 52.5°

∵ β α

So, As 37.5°52.5°

∴ β = 37.5°

Hence From given relation the value of β is 37.5° Answer

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3 years ago

Is y=-2x+b linear or non linear

Anuta_ua [19.1K]

Hint: if you were to graph this, and it curves, then its a linear, if not its straight, then its non linear

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The product of a number t and 6 increased by 1 is equal to 43

Flura [38]

6*7=42 42+1=43 therefore the number you are looking for is 7

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3 years ago

Choose the best system of equations to represent the situation and determine the labels for the variables:

7nadin3 [17]

Answer B.
X represents the number of years grown
Y represents the total number of feet grown

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