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4 years ago

9

PLEASE Help !!!PICTURE SHOWN

1 answer:

V125BC [204]4 years ago

8 0

I think that C would be the best answer because you have to multiply and then divide.

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Formula to find the volume of a circle

victus00 [196]

V = ⁴⁄₃πr³ is the formula for the volume of a sphere

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4 years ago

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Pls help with this problem

sergey [27]

The answer to this is -11/12

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3 years ago

Solve the following equation for r : (1/t(t-1)) - 1/t = 3/t-1

givi [52]

$Domain:\\\\t(t-1)\neq0\to t\neq0\ \vee\ t\neq1$

$\dfrac{1}{t(t-1)}-\dfrac{1}{t}=\dfrac{3}{t-1}\qquad|+\dfrac{1}{t}\\\\\dfrac{1}{t(t-1)}=\dfrac{3}{t-1}+\dfrac{1}{t}\\\\\dfrac{1}{t(t-1)}=\dfrac{(3)(t)}{t(t-1)}+\dfrac{(1)(t-1)}{t(t-1)}\\\\\dfrac{1}{t(t-1)}=\dfrac{3t+t-1}{t(t-1)}\\\\\dfrac{1}{t(t-1)}=\dfrac{4t-1}{t(t-1)}\iff1=4t-1\qquad|+1\\\\2=4t\to4t=2\qquad|:4\\\\\boxed{t=0.5}$

8 0

4 years ago

It takes Josephine 60 minutes to walk 7 1/2 blocks.At This Rate How Many Blocks Can He Walk In 4 Hours.

never [62]

Answer:

30 blocks

Step-by-step explanation:

60 minutes = 1 hour

For one hour, she will walk 7.5 blocks.

The rate is 7.5blocks per hour.

Multiply this by 4 hours, and you will get 30 blocks.

(7.5)4 = 30

5 0

3 years ago

Helppp please show work

Mamont248 [21]

Step-by-step explanation:

<u>Given</u><u> </u><u>that</u><u>:</u><u>-</u>

Side AC measures 6 units
Side BC measures 9.5 units
Side AB measures 11 units

<u>To</u><u> </u><u>find</u><u>:</u><u>-</u>

The cosB as a decimal rounded to the nearest hundredth

<u>We</u><u> </u><u>know</u><u> </u><u>that</u><u>, </u>

${ \bigstar \: { \underline{ \boxed{ \cos( \theta ) \: = \sf\frac{adjecent \: side}{hypotenuse} }}}}$

<u>Solution</u><u>:</u>

$\longrightarrow \rm \cos(B) = \dfrac{BC}{AB}$

$\longrightarrow \rm \cos(B) = \dfrac{9.5}{11}$

$\longrightarrow \rm \cos(B) = \dfrac{95}{110}$

$\longrightarrow \rm \cos(B) = 0.8 63$

$\longrightarrow \rm \cos(B) \approx \: 0.9$

<u>Therefore:</u>

Cos B equals 0.9

6 0

2 years ago