All categories

2 years ago

What is the probability that the first marbles you choose is red and the second is blue

Mathematics

1 answer:

ella [17]2 years ago

5 0

Answer:

2/9

Step-by-step explanation:

You might be interested in

Use the expression 28b - 4c. Part B: What is the value of the expression when b = -4 and c = 1? Show your work or explain.

Brilliant_brown [7]

Answer:

The value of the expression is -116

Step-by-step explanation:

Given

$Expression: 28b - 4c$

Required

Solve when b = -4 and c = 1

$Expression: 28b - 4c$

Substitute -4 for b and 1 for c

$Expression: 28*-4 - 4*1$

$Expression = -28*4 - 4$

$Expression = =112 - 4$

$Expression: -116$

The value of the expression is -116

3 0

3 years ago

A sample of tritium-3 decayed to 94.5% of its original amount after a year.

Zolol [24]

(a) If $y(t)$ is the mass after $t$ days and $y(0) = A$ then $y(t) = Ae^{kt}.$

$y(1) = Ae^k = 0.945A \implies e^k = 0.945 \implies k = \ln 0.945$

$\text{Then } Ae^{(\ln 0.945)t} = \frac{1}{2}A\ \Leftrightarrow\ \ln e^{(\ln 0.945)t} = \ln \frac{1}{2}\ \Leftrightarrow\ ( \ln 0.945) t = \ln \frac{1}{2} \Leftrightarrow \\ \\
t = - \frac{\ln 5}{\ln 0.945} \approx 12.25 \text{ years}$

(b)
$Ae^{(\ln 0.945) t} = 0.20 A \ \Leftrightarrow\ (\ln 0.945) t \ln \frac{1}{5}\ \implies \\ \\
t = - \frac{\ln 5}{\ln 0.945} \approx 28.45\text{ years}$

3 0

4 years ago

What numbers multiply to 0.32 and also add to 1.2

mylen [45]

.08 x .04 is the right answer

6 0

4 years ago

How do you rewrite y-3=4(x-5) turn into Slope Intercept Form

marissa [1.9K]

Answer:

Step-by-step explanation:

cause when you do 3=4 equals 4 then multiply 5 then you have 20

6 0

4 years ago

What is the area of the trapezoid shown below? 2 15 12 help fast please!!!

Ugo [173]

Answer:

78 units2

Step-by-step explanation:

The Area of the triangle is 54 units2

The rectangle on the side has an area of 24 units2.

Add them together, and you get 78.

I hope this helps!

pls ❤ and give brainliest pls

7 0

3 years ago