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2 years ago

5

The half-life of a radioactive substance is 27.7 years.

1 answer:

Thepotemich [5.8K]2 years ago

6 0

Answer:

N(t) = N₀·0.5^(t/27.7)

11.5 years

242.5 grams

Step-by-step explanation:

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In the expression 14b what is the coefficient? *

Pachacha [2.7K]

Answer:

14

Step-by-step explanation:

4 0

2 years ago

What is the solution of the system? Use elimination.

Anit [1.1K]

Note that if we add each side of the 2 equations, y will cancel out:

-12x-y+(17x+y)=6+4

5x=10

x=2

Substituting x=2 in either of the equations, we find the value of y.

Let's use the first equation:

-12x-y=6

-24-y=6

-y=24+6

-y=30, so y=-30.

Thus, the solution is (2, -30)

Answer: C

6 0

2 years ago

Paisley has 8\tfrac{1}{4}8 4 1 cups of yogurt to make smoothies. Each smoothie uses \tfrac{11}{16} 16 11 cup of yogurt. How

Ivenika [448]

Given:

Total Yogurt = $8\dfrac{1}{4}$ cups

Yogurt required for each smoothie = $\dfrac{11}{16}$ cup

To find:

The number of smoothies that Paisley can make with the yogurt.

Solution:

We know that,

$\text{Number of smoothies}=\dfrac{\text{Total yogurt}}{\text{Yogurt required for each smoothie}}$

Substituting the given values, we get

$\text{Number of smoothies}=\dfrac{8\dfrac{1}{4}}{\dfrac{11}{16}}$

$\text{Number of smoothies}=8\dfrac{1}{4}\times \dfrac{16}{11}$

$\text{Number of smoothies}=\dfrac{32+1}{4}\times \dfrac{16}{11}$

$\text{Number of smoothies}=\dfrac{33}{4}\times \dfrac{16}{11}$

$\text{Number of smoothies}=3\times 4$

$\text{Number of smoothies}=12$

Therefore, the number of smoothies is 12.

6 0

3 years ago

7200 divided by y = 90

vladimir1956 [14]

Are you looking for y and if so y=80

3 0

2 years ago

Read 2 more answers

write a linear equation in slope-intercept form with a slope of -5 and passes through the point (-1,8)

hammer [34]

Answer:

y=-5x-13

Step-by-step explanation:

use y-y1=m(x-x1)

y+8=-5(x+1)

y+8=-5x-5

subtract 8 from both sides

y=-5x-13

8 0

2 years ago