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3 years ago

What is the sin inverse of (sine 9pi/7)?

1 answer:

7 0

For the answer to the question above, I've used my calculator to inverse your given equation because my brain can't do that.
The answer to your question is
In radians, arcsin(sin(9π) / 7) = 0.
i hope my answer helped you.

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At Everyday Donuts, 3 of the last 6 donuts sold had sprinkles. Considering this data, how many of the next 10 donuts sold would

Oliga [24]

Answer:

Step-by-step explanation:

3 is half of 6, so since half of 10 is 5 I'd say 5.

I hope this helped <3

4 0

3 years ago

What is the area of the triangle??? helpppp

MAVERICK [17]

Answer:

210 ft^2

Step-by-step explanation:

The area of a triangle is

A = 1/2 bh where b is the base and h is the height

Since this is a right triangle the base is 20 ft and the heigth is 21 ft

A = 1/2 ( 20) * 21

210 ft^2

4 0

3 years ago

Read 2 more answers

Question is 15 points

Blababa [14]

sin(x+y)=sin(x)cos(y)-cos(x)sin(y)

also, remember pythagorean rule, $sin^2(x)+cos^2(x)=1$

given that sin(Θ)=4/5 and cos(x)=-5/13

find sin(x) and cos(Θ)

sin(x)

cos(x)=-5/13

using pythagorean identity

(sin(x))^2+(-5/13)^2=1

sin(x)=+/- 12/13

in the 2nd quadrant, sin is positve so sin(x)=12/13

cos(Θ)

sin(Θ)=4/5

using pythagrean identity

(4/5)^2+(cos(Θ))^2=1

cos(Θ)=+/-3/5

in 1st quadrant, cos is positive

cos(Θ)=3/5

so sin(Θ+x)=sin(Θ)cos(x)+cos(Θ)sin(x)

sin(Θ+x)=(4/5)(-5/13)+(3/5)(12/13)

sin(Θ+x)=16/65

answer is 1st option

7 0

3 years ago

How would you find the x-intercept of f(x)=(x-4)^2-3?

Svetlanka [38]

The x -intercepts occur when f(x) =0
So,
(x-4)^2 = x^2 -8x + 16 -3 =0
x^2 -8x + 13 =0
Solving by the quadratic formula
x1 = 5.7321
x2 = 2.2679

8 0

3 years ago

Determine whether the polynomial below can be factored into perfect squares. If so, factor the polynomial. Otherwise, select tha

kkurt [141]

Answer:

A. $=(9x-12)^2$

Step-by-step explanation:

We need to determine whether the polynomial $81x^2-216x+144$ can be factored into perfect squares. If so, factor the polynomial. Otherwise, select that it cannot be factored into a perfect square.