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Svetllana [295]
3 years ago
11

The half life of a radioactive kind of cadmium is 14 years. How much will be left after 28 years, if you start with 72 grams of

it?

Mathematics
1 answer:
nlexa [21]3 years ago
8 0

Answer:

18 grams

Step-by-step explanation:

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Use a graphing calculator or online application to find the solutions to x 2 - 9 = to the nearest tenth. The solution is approxi
drek231 [11]
X^2-9=0 add 9 to both sides

x^2=9  take the square root of both sides

x=±3
7 0
3 years ago
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I need to know ASAP! Thanks ^^
jek_recluse [69]

Answer:

PQ=30

Step-by-step explanation:

Knowing that the segment has 3 parts that are 3:1:1 and sum up to 50, you could find how much 1 would equal by finding the total in relation to the ratio (doing 3+1+1) which gets you 5 parts. Then you can divide the total (50) by 5 to figure out how much one part would equal (10). Now, since you know that 1 part is equal to 10 and that PQ is 3 parts, you can find that PQ is equal to 3x10, or 30.

7 0
3 years ago
Urrrrrrrrrrrrrrerrrrrr
Alenkasestr [34]

Answer:

answer = -12

Step-by-step explanation:

substitute y as -3 and z as 4

3(-3) - 2(4) + 5

-9-8+5

-17+5

-12

5 0
3 years ago
Read 2 more answers
you plan to go snowboarding this weekend in Pennsylvania. the resort charges $15.75 per hour in addition to a $25 deposit to ren
Ulleksa [173]

Answer:

A. Equation is c=25+15.75x

B. Cost is $88


Step-by-step explanation:

A)

Suppose you rent for x hours and each hour costs $15.75

<u><em>How much would you need to pay?</em></u>

15.75x

Moreover, there is a $25 dollar (fixed) deposit for renting, so that gets added to your payment. All in all, you have to pay 25+15.75x

This is the equation of renting a snowboard for x hours.

Equation is c=25+15.75x

  • Where x is the number of hours you rent the snowboard, and
  • c is the total cost

B)

If you are renting from 8.30 to 12.30, you are basically renting for 4 hours.

To know how much it will cost, you simply plug in 4 into x (in the equation):

c=25+15.75x\\c=25+15.75(4)\\c=88

Cost is $88

6 0
3 years ago
Let p(x)=x^3+15x^2-8x+2. What is the remainder when p(x) is divided by x-2?
Oduvanchick [21]

Answer:

Step-by-step explanation:

Using synthetic division, the zeros goes into the box, which would be -1

-1  |  1  -3  -1  24

           -1   4   -3

       1  -4   3   21

The remainder is 21

4 0
3 years ago
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