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Marat540 [252]
2 years ago
8

The half-life of cobalt-60 (used in

Mathematics
1 answer:
Likurg_2 [28]2 years ago
5 0

Answer:

6.25 gm left

Step-by-step explanation:

Find the number of half lives in 26.3 years

   26.3 / 5.26 = 5 half lives

(1/2)  ^5   = 1/32 nd  of the original will be left

   1/32 * 200g = 6.25 gm left

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What is the radius of a circle with an area of 530.9
Igoryamba

Answer:

13

Step-by-step explanation:

diameter = r * 2 = 13  * 2 = 26 (diameter is double radius)

Circle area = π * r^2 = π * 169 ≈ 530.9

3 0
3 years ago
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One number is three less than a second number. Six times the first is 6 more than 3 times the second. Find the numbers.
Karolina [17]

Step-by-step explanation:

Given,

x = y - 3

Also,

6(y - 3) = 3y + 6

6y - 18 = 3y + 6

6y - 3y = 6 + 18

3y = 24

y = 24/3

y = 8

x = 8 - 3

x = 5

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4 0
3 years ago
Y= -1/3x + 4<br><br> I dont understanddddddddddd
mr Goodwill [35]
- if you're looking for the inverse of it is -3x + 12
- if you're looking for the slope of it is m equals m=-1/3
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7 0
3 years ago
Suppose f(x) = x2 and g(x)= (1/4x)2 Which statement best compares the
Umnica [9.8K]

Answer:

B. The graph of g(x) is the graph of f(x) horizontally stretched by a factor of 4.

I just did it off of A.P.E.X

7 0
3 years ago
Given -3x + 2y = 1 and x = 5, solve for y.<br><br> a.-7<br><br> b.7<br><br> c.-8<br><br> d.8
eduard

Answer:

d. 8

Step-by-step explanation:

Given: -3x + 2y = 1 and x = 5

Now plug x =5 in the given equation and find the value of y.

-3(5) + 2y = 1

-15 + 2y = 1

2y = 1 + 15

2y = 16

Dividing both sides by 2, we get

y = 8

Thank you.


7 0
3 years ago
Read 2 more answers
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