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natta225 [31]
3 years ago
8

by 14 1 4 each week for a number of weeks, w . He writes the expression 20(14) 20 ( 1 4 ) w to find the amount of radioactive su

bstance remaining after w weeks. Autumn starts with 5 5 milligrams of a radioactive substance. The amount of the substance decreases by 50% 50 % each week for a number of weeks, w . She writes the expression (1−0.5) ( 1 - 0 . 5 ) w to find the amount of radioactive substance remaining after w weeks. Use the drop-down menus to explain what each part of Nick's and Autumn's expressions mean.
Mathematics
1 answer:
erastovalidia [21]3 years ago
8 0

Answer:

1/2 ^w : decay factor after w weeks

hope this helps

Step-by-step explanation:


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Anna007 [38]

Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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Natasha_Volkova [10]

Answer:

3/5

Step-by-step explanation:

To have the best chance of pulling a pair with the same color you should try to get a pair of black socks. There is a 3/5 chance of pulling a black sock so this means for every 5 socks you pull you get 3 black socks or 2 navy socks. Either way you will get a pair of socks with the same color. (Double check to make sure I'm correct)

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Write the equation of the linear relationship in slope-intercept form, using decimals as needed.
Vedmedyk [2.9K]

Answer:

y = -0.3x + 103

Step-by-step explanation:

✔️Find the slope (b):

Slope = ∆y/∆x

Using, (25, 95.5) and (35, 92.5),

Slope (m) = (92.5 - 95.5)/(35 - 25) = -3/10 = -0.3

✔️Find the y-intercept (b):

Substitute (x, y) = (25, 95.5) and m = -0.3 into y = mx + b

95.5 = -0.3(25) + b

95.5 = -7.5 + b

95.5 + 7.5 = b

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✔️To write the equation, substitute m = -0.3 and b = 103 into y = mx + b

Thus:

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3 years ago
Given triangle PRS is congruent to triangle CFH, find the values of x, y, and z.
Mashutka [201]

Answer:

x = 23

y = 7

z = 11

Step-by-step explanation:

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m<R = m<F

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Add 1 to both sides

13y - 1 + 1 = 90 + 1

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Divide both sides by 13

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PS = CH

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Add 7 to both sides

2x - 7 + 7 = 39 + 7

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Divide both sides by 2

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Since ∆PRS ≅ ∆CFH, therefore,

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Find m<S

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Plug in the value of y

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62° = 6z - 4 (substitution)

Add 4 to both sides

62 + 4 = 6z - 4 + 4

66 = 6z

Divide both sides by 6

66/6 = 6z/6

11 = z

7 0
3 years ago
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