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4 years ago

I am confused on how to get the answer

Mathematics

2 answers:

Ksju [112]4 years ago

4 0

Answer:

try using this

Step-by-step explanation:

multiply π which = 3.14 by the diamiter so it would be 3.14 x 6.5 = 20.41

Irina18 [472]4 years ago

4 0

Multiply the diameter by pi (3.14)

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PLEASE help me I need help

Alexxandr [17]

Answer:

Step-by-step explanation:

The rest you can elimate because of obvious inferring and reasoning so process of elimination

7 0

3 years ago

Read 2 more answers

2x-8y=6 y=-7- x what are the coordinates

goblinko [34]

2x-8(-7-x)=6
2x+56+8x=6
10x=-50
x=-5

y=-7-(-5)
y=-2

(-5,-2)

5 0

4 years ago

Recall that m(t) = (1/2)^t/h for radioactive decay, where h is the half-life. Suppose that a 500g sample of phosphorus-32 decays

katrin2010 [14]

The question is incomplete, here is the complete question:

Recall that m(t) = m.(1/2)^t/h for radioactive decay, where h is the half-life. Suppose that a 500 g sample of phosphorus-32 decays to 356 g over 7 days. Calculate the half life of the sample.

Answer: The half life of the sample of phosphorus-32 is $14.28days^{-1}$

Step-by-step explanation:

The equation used to calculate the half life of the sample is given as:

$m(t)=m_o(1/2)^{t/h}$

where,

m(t) = amount of sample after time 't' = 356 g

$m_o$ = initial amount of the sample = 500 g

t = time period = 7 days

h = half life of the sample = ?

Putting values in above equation, we get:

$356=500\times (\frac{1}{2})^{7/h}\\\\h=14.28days^{-1}$

Hence, the half life of the sample of phosphorus-32 is $14.28days^{-1}$

7 0

4 years ago

Your friend George is 6 feet tall and his shadow is 10 feet long. At the same time, the shadow of the flagpole was 85 feet long.

Leokris [45]

Answer:

51 feet

Step-by-step explanation:

Let

x -----> the height of a flagpole

we know that

Using proportion

$\frac{6}{10}=\frac{x}{85} \\\\x=6*85/10\\\\x=51\ ft$

8 0

4 years ago

Need help with this problem

Zanzabum

Answer:

C. Priya needs to charge at least $21 per bracelet.

Step-by-step explanation:

$117b - 505 \ge 1952$

Add 505 to both sides.

$117b \ge 2457$

Divide both sides by 117.

$b \ge 21$

Answer: C. Priya needs to charge at least $21 per bracelet.

7 0

3 years ago