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leonid [27]
3 years ago
12

A circular well has a circumference of 7.85 yards. What us the diameter of the well

Mathematics
2 answers:
sergiy2304 [10]3 years ago
6 0
15.7 that thy answer 
Lelechka [254]3 years ago
6 0
The circumference of 7.85 yards is 15.7
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The Lee family buys a new car that has a sales price of $35,000. If the car dealer requires a minimum down payment of 15%, what
Ivanshal [37]
<h2><u><em>PLEASE MARK ME BRAINLIEST!!!!!</em></u></h2>

Answer:

$5,250

Step-by-step explanation:

The less must pay a minimum down payment that is equivalent to 15% the sales price of the new car.

Given that the price of the new car is $35,000, the product of 15% with this amount will equal the down payment.

As such, the down payment

= 15% * $35,000

= 0.15 * $35,000

= $5,250

8 0
3 years ago
The half life of silicone-32 is 710 years. If 30 grams is present now, how much will be present in 300 years?
Irina18 [472]

Answer:

22.38 g of silicone-32 will be present in 300 years.

Step-by-step explanation:

A radioactive half-life refers to the amount of time it takes for half of the original isotope to decay and its given by

                                           N(t)=N_0(\frac{1}{2})^{\frac{t}{t_{1/2}}

where,

N(t) = quantity of the substance remaining

N_0 = initial quantity of the substance

t = time elapsed

t_{1/2} = half life of the substance

From the information given we know:

  • The initial quantity of silicone-32 is 30 g.
  • The time elapsed is 300 years.
  • The half life of silicone-32 is 710 years.

So, to find the quantity of silicone-32 remaining we apply the above equation

N(t)=30\left(\frac{1}{2}\right)^{\frac{300}{710}}=30\left(\frac{1}{2}\right)^{\frac{30}{71}}\approx22.38 \:g

22.38 g of silicone-32 will be present in 300 years.

7 0
3 years ago
What is -2(4n - 1) +15<br> I think that it is -8n - 13 but i am not sure plz help
ANEK [815]

Answer: Your right!

-8n-13

Step-by-step explanation:

-2(4n-1)+15=

-8n+2-15

Combine like terms- 2-5= -13

so -8n-13

8 0
3 years ago
Amanda think of a number, a. She subtract 4 then multiples the result by 2. Write an expression for her number?
algol13
(X - 4 ) x 2 = X

You subtract X from four then you get your answer next to multiply your answer by two resulting in an answer….. the answer is the expression I wrote above.
3 0
2 years ago
Can someone please help​
sweet [91]

Answer: y= -x +4

negative slope because our graph goes down as we go right.

+4 indicating how high on our y axis we go up/down

3 0
3 years ago
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