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agasfer [191]
3 years ago
13

A radioactive substance decays according to the equation y=30( .88 )^x, where y is measured in grams of the radioactive substanc

e and x is years. In how many years will there be about half of the original amount left of this radioactive substance?
Mathematics
1 answer:
Gelneren [198K]3 years ago
7 0
The answer is: 4 idk.
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If the length of the pond is 125 and your stride is 2.5 what is the distance that you have to paddle
vazorg [7]

Answer:

The distance you have to paddle = 50

Step-by-step explanation:

In order to determine the distance you have to paddle, you simply find out how many 2.5s are in 125. This is a case of simple division, as follows:

Total distance = 125

stride = 2.5

distance of paddle = 125 ÷ 2.5 = 50

8 0
3 years ago
(The answer I put is the wrong answer)
ra1l [238]

Answer:

Step-by-step explanation:

Volume = πr²h/3 = πr²9/3 = 3πr²

3πr² = 3πy² + 30πy + 75π

r² = y² + 10y + 25

r² = (y+5)²

r = y+5

8 0
3 years ago
How much will 5 pounds cost
Lesechka [4]

Answer:

$6.25

Step-by-step explanation: 10/8=1.25 1.25*5=6.25

8 0
3 years ago
3. Are these ratios equivalent? 35:28 and 10:8 *
attashe74 [19]

Reduce each ratio to its minimum expression to find if they are equal.

35:28

\begin{gathered} \frac{35}{28}=\frac{7\cdot5}{7\cdot4} \\ =\frac{5}{4} \end{gathered}

10:8

\begin{gathered} \frac{10}{8}=\frac{2\cdot5}{2\cdot4} \\ =\frac{5}{4} \end{gathered}

Since both ratios reduce to 5:4, they are equivalent.

Another way to check a:b is equivalent to c:d, is that a*d = b*c

In this case, this will be true if 35 times 8 is equal to 10 times 28:

\begin{gathered} 35\cdot8=280 \\ 10\cdot28=280 \end{gathered}

Since both products are equal, then the ratios are equivalent.

4 0
1 year ago
How many 2/3 foot pieces can Wendy cut from the 51/3 feet of ribbon
Katen [24]

You would divide 51 by 2 to get the answer, as the units are the same, for an answer of 25 two-thirds foot sized pieces, with 1 as a remainder.

3 0
3 years ago
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