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3 years ago

SOMEONE HELP PLS. if you know trigonometry, answer this simple question.

Mathematics

2 answers:

denis-greek [22]3 years ago

5 0

Answer:

Good luck!

Intelligent Muslim,

From Uzbekistan.

Softa [21]3 years ago

4 0

Answer: TanX = opp/Adj

Tan30 = x/10

1/√3 = x/10

x√3 = 10

x = 10/√3

x = 10/√3 * √3/√3

x = 10√3/3

x = 5.77 to 2dp

To find y using cosine

CosY = Adj/Hyp

Cos30 = 10/y

√3/2 = 10/y

y√3 = 20

y = 20/√3

y = 20/√3 * √3/√3

y = 20√3/3

y = 11.55 to 2 dp

Step-by-step explanation:

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(Worth 20 points) Triangle RST is similar to RVW

goldenfox [79]

12 mm is the correct answer

8 0

3 years ago

Read 2 more answers

Chico walks 3/5 mile to the library. Nikki walks 1/4 the distance that Chico walks to the library. How far does Nikki walk?

Effectus [21]

3/5 miles = 0.6 miles
0.6/4= 0.15 miles

Nikki walked 0.15 miles or 3/20 miles.

Multiply the bottom of the fractions together (4*5=20) and the tops (3*1=3) to get 3/20.

4 0

3 years ago

A ball is thrown off the roof of the school. Its path can be described by the equation: h(t) = -2t^2 + 8t + 10, where h is heigh

zimovet [89]

Answer:

10 meters

Step-by-step explanation:

The given function $h(t)=-2t^2+8t+10$ represents the height, $h$ , in meters, $t$ seconds after the ball is thrown.

Since the ball is thrown off the roof, then ball's height will be equal to the roof's height before being thrown (0 seconds). Therefore, substitute $t=0$ into the given function $h(t)=-2t^2+8t+10$ :

$h(0)=-2(0^2)+8(0)+10,\\h(0)=0+0+10,\\h(0)=\boxed{10\text{ meters}}$

Therefore, the building is 10 meters tall.

8 0

3 years ago

Evaluate the expression <br> 33(4a), if a = 2.

Alexandra [31]

Answer:

33(4a) =264

Step-by-step explanation:

Parentheses

Exponents

Multipication

Division

Addition

Subtraction

so, if we do parentheses first 4 times 2 will equal 8 then 33 x 8=264

you're welcome :D

6 0

3 years ago

Using the quadratic formula to solve 4x2 – 3x + 9 = 2x + 1

Oksanka [162]

Answer:

factorisation method

4x² - 3x + 9 = 2x + 1

4x² - 3x-2x +9-1 = 0

4x² - 5x + 8 = 0

sum = -5

product= 4x8

factors=(try to look for the numbers when added they give -5 a!d when multiplied they give 32

press the numbers in the position of -5

factorise

each blacket equal it to 0

and solve for the two values of x

8 0

3 years ago