Please help me it is division problems

What is the answer to 4x=-12

vampirchik [111]

4x = -12
4/4 -12/4
x = -3

3 0

3 years ago

What is the volume of a right circular cylinder with a radius of 5 cm and a height of 12 cm?

tatiyna

Answer:

V = 942.48cm³

Step-by-step explanation:

The volume of a right circular cylinder with a radius of 5 cm and a height of 12 cm is 942.48.

Formula: V=πr2h

V=πr2h=π·52·12≈942.4778cm³

5 0

3 years ago

the running back for the bulldogs football team carried the ball 5 times for the total of losses of 11 1/4 yards. find the avreg

Assoli18 [71]

Answer:

-2 1/4

The average change in the field position run was -2 1/4 yards

4 0

4 years ago

Prove :.........<br><img src="https://tex.z-dn.net/?f=%20%5Csqrt%7B%20%5Cfrac%7B1%20%2B%20cosx%7D%7B1%20-%20cosx%7D%20%7D%20%20%

krok68 [10]

This is generally not true. Let x = 3π/2. Then

cos(3π/2) = 0

sin(3π/2) = -1

and

√((1 + cos(x)) / (1 - cos(x))) = √(1 / 1) = 1

while

sin(x) / (1 - cos(x)) = -1 / 1 = -1

6 0

3 years ago

Which of the following trigonometric ratios is equivalent to sin 4pi / 3?

emmainna [20.7K]

Answer:

(A)

Step-by-step explanation:

The given trigonometric ratio is :

$sin\frac{4{\pi}}{3}$

On solving this, we get

$sin\frac{4{\pi}}{3}$

= $sin240^{{\circ}}$

= $sin(180+60)$

= $-sin60^{{\circ}}$

= $-\frac{\sqrt{3}}{2}$

(A) The given trigonometric ratio is :

$cos\frac{5{\pi}}{6}$

= $cos150^{{\circ}}$

= $cos(180-30)$

= $-cos30^{{\circ}}$

= $-\frac{\sqrt{3}}{2}$

Which is equivalent to the given trigonometric ratio, thus (A) is correct.

(B) The given trigonometric ratio is :

$cos\frac{5{\pi}}{3}$

= $cos300^{{\circ}}$

= $cos(360-60)$

= $-cos60^{{\circ}}$

= $-\frac{1}{2}$

which is not equivalent to the given trigonometric ratio, thus(B) is incorrect.

(C) The given trigonometric ratio is :

$sin\frac{{\pi}}{3}$

= $\frac{\sqrt{3}}{2}$

which is not equivalent to the given trigonometric ratio, thus(C) is incorrect.

(D) The given trigonometric ratio is :

$sin\frac{7{\pi}}{6}$

= $sin210^{{\circ}}$

= $sin(180+30)$

= $-sin30^{{\circ}}$

= $-\frac{1}{2}$

which is not equivalent to the given trigonometric ratio, thus(D) is incorrect.

7 0

4 years ago