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3 years ago

6

A boat is moving at a velocity of –14 miles per hour.

1 answer:

Rama09 [41]3 years ago

5 0

Answer:

d

Step-by-step explanation:

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I NEED THIS ASAP!!!!

Andreas93 [3]

If you subtract 2 from both sides

It would be 4=-4x

So the answer is B

6 0

2 years ago

Helppp? if possible

Mice21 [21]

Answer:

x=9

Step-by-step explanation:

8x-14=2(2x+11)

8x-14=4x+22

4x=36

x=9

3 0

3 years ago

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Help please and thanks! I'll award brainliest if you show your work as well :)

iren2701 [21]

Answer:

6 inches

Step-by-step explanation:

Formula for surface area of a cylinder:

$SA=2\pi r^{2} +2\pi rh$

Plug in values and solve for the radius:

$180\pi =2\pi r^{2} +2\pi r(9)\\$

Divide both sides by $2\pi$

$90=r^{2} +r(9)$

Subtract 90 from both sides

$0=r^{2} +9r-90$

Use the quadratic equation to find the roots

$x=(-b$ ± $\sqrt{b^2-4ac})*\frac{1}{2a}$ (sorry for formatting, Brainly doesn't

allow equations with ± in them)

$x=\frac{-9+\sqrt{9^2-4*1*90} }{2(1)}$ and $x=\frac{-9-\sqrt{9^2-4*1*90} }{2(1)}$

$x=\frac{(-9+\sqrt{81+360})}{2}$ and $x=\frac{(-9-\sqrt{81+360})}{2}$

$x=\frac{(-9+\sqrt{441})}{2}$ and $x=\frac{(-9-\sqrt{441})}{2}$

$x=\frac{(-9+21)}{2}$ and $x=\frac{(-9-21)}{2}$

$x=\frac{12}{2}$ and $x=\frac{-30}{2}$

$x=6$ and $x=-15$

We can't have a negative radius, so that leaves us with r=6 in.

8 0

2 years ago

The ratio of two sums of money are 4:5. the first sum is $6. what is the second?

BabaBlast [244]

7.5
Cross multiply (4•x) and (5•6) and get 30=4x
X=7.5

4 0

2 years ago

Find the circumference

AleksAgata [21]

12 times 3.14 = 37.68 CM
C=D x 3.14

5 0

2 years ago

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