I just need to know if I add, subtract, divide, or multiply, I think I divide but not sure

Please help!!!!!!!!!!!!!

aivan3 [116]

Answers:

A
C
D

Step-by-step explanation:

We must simplify each option to see if they are equivalent to $-\frac{3}{8}$ .

Lets try A.

$-\frac{6}{16}$ can be simplified to $-\frac{3}{8}$ by dividing both the numerator and denominator by 3.

$-\frac{6}{16}$ ÷ $\frac{3}{3} = -\frac{3}{8}$

A is correct!

Lets try B

$\frac{12}{32}$ simplifies to $\frac{3}{8}$ . However, because this answer is not negative, it is not equivalent.

Lets try C

There is a negative in the numerator, making this fraction negative. So yes, $\frac{-3}{8} = -\frac{3}{8}$ .

Bonus Info: If there was a negative in both the numerator and denominator, the two negatives would cancel eachother out, making the fraction positive

C is correct!

Lastly, Lets try D

There is a negative in the denominator, so this fraction is negative. $\frac{9}{-24}$ can be simplified by dividing by 3 to $-\frac{3}{8}$ .

$\frac{9}{-24}$ ÷3 = $-\frac{3}{8}$

D is correct!

Hope this helped you!~

6 0

4 years ago

The central angle of an arc measures 120° The radius of the circle measures 3 cm what is the area of the sector to the nearest h

jeka57 [31]

Answer:

The area of the sector should be 9.42 $cm^2$ .

Step-by-step explanation:

-The formula for finding the area of a sector:

$A = \frac{Arc}{360} \pi r^2$

-Next use the arc measure and the radius in order to solve and get the answer:

$A = \frac{120\textdegree}{360\textdegree}\pi 3^2$

-Solve:

$A = \frac{120\textdegree}{360\textdegree}\pi 3^2$

$A = \frac{120\textdegree}{360\textdegree}\pi \times3^2$

$A = \frac{1}{3} \pi \times 3^2$

$A = \frac{1}{3} \pi \times 9$

$A = 3\pi \approx 9.424$

-Round to the nearest hundredth:

$A \approx 9.42$

8 0

3 years ago

Help with number 14 please :))

Degger [83]

Answer:

b = - 5

Step-by-step explanation:

(k + a )(k + x) + 1 = k^2 + kx + ak + ax + 1

I think the way to solve this is to worry about the 36

k^s + 1 + ak should equal 36

We know that a = 2

k^2 + 1 + 2k = 36

k^2 + 2k + 1 - 36 = 0

k^2 + 2k - 35 = 0

(k + 7)(k - 5) = 0

k = -7 is the only acceptable answer. It is given that K < 0.

bx = kx + ax

b = k + a

b = - 7 + 2

b = - 5

3 0

3 years ago

Need help!!! i also have similar question to this one too if you want to help me. :)

natta225 [31]

Answer:

19 pts

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

1. Triangle ABC with coordinate points A(-2,3); B(-1,0); C(5,-4) is rotated 90 degrees clockwise. What

Reil [10]

Answer: A'(3,2), B'(0,1) and C'(-4, -5).

Step-by-step explanation:

When we rotate (a,b) 90 degrees clockwise, the new point will be (b,-a).

i.e. rotation rule for 90 degrees clockwise : (x,y) → (y,-x)

Given: Triangle ABC with coordinate points A(-2,3); B(-1,0); C(5,-4) is rotated 90 degrees clockwise.

Then, the new image points for triangle A'B'C' will be :

A(-2,3) → A'(3,-(-2)) =A'(3,2)

B(-1,0)→ B'(0,-(-1)) = B'(0,1)

C(5,-4) → C'(-4, -5)

Hence, the new image points for triangle A'B'C' are A'(3,2), B'(0,1) and C'(-4, -5).

6 0

3 years ago