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3 years ago

Please help I suck at this kind of math

Mathematics

1 answer:

hammer [34]3 years ago

3 0

Answer:

I am sorry, I am only in middle school... I am learning about like the questions I have been asking

Step-by-step explanation:

I really hope you get the question answered and get it correct

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I literally have no clue how to do this.

timurjin [86]

Answer:

Step-by-step explanation:

Sine is opposite divided by the hypotenuse.

sin(30) = 9/y

1/2 = 9/y

y = 18

Cosine is adjacent divided by the hypotenuse

cos(30) = x/18

$\frac{\sqrt{3} }{2}=x/18\\x=9\sqrt{3}=15.6$

3 0

3 years ago

Help plz will be marked brainlyist

garik1379 [7]

Answer:

Not proportional

Step-by-step explanation:

If x and y are proportional then the equation relating them is

y = kx ← k is the constant of proportionality

To determine if x and y are in proportion then k must be equal for all ordered pairs, that is

k = $\frac{y}{x}$

(2, 0) k = $\frac{0}{2}$ = 0

(4, 2) → k = $\frac{2}{4}$ = $\frac{1}{2}$

(6, 4) → k = $\frac{4}{6}$ = $\frac{2}{3}$

(8, 6) → k = $\frac{6}{8}$ = $\frac{3}{4}$

Since k is not constant for all values then not in proportion

6 0

3 years ago

Doug left $3 as a tip on a lunch bill of $14.

Svetllana [295]

Answer:

Step-by-step explanation:

5 0

3 years ago

Evaluate A² for A = -3

frutty [35]

Answer:

Step-by-step explanation:

If A = - 3, than A^2 is equal to (-3)^2

If a number is squared (to power of 2), it is multiplied by itself (there are two of that number being multiplied together) so it is - 3x-3

-3 x - 3 = 9,

Because 3x3 =9 and a negative multiplied by a negative makes a positive.

Hope this helped!

7 0

4 years ago

Read 2 more answers

PLEASE HELP ASAP WILL MARK THE BRAINLEST DUE TODAY NEED YA'LL HELP

tangare [24]

Answer:

nitrogen

Step-by-step explanation:

By far, the most abundant gas in the Earth's atmosphere is nitrogen, which accounts for about 78% of the mass of dry air. Oxygen is the next most abundant gas, present at levels of 20 to 21%

3 0

4 years ago

Read 2 more answers