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Levart [38]
3 years ago
11

A bag contains 10 marbles: 3 are green, 2 are red, and 5 are blue. Brian chooses a marble at random, and without putting it back

, chooses another one at
random. What is the probability that both marbles he chooses are red? Write your answer as a fraction in simplest form.
Mathematics
1 answer:
ANTONII [103]3 years ago
8 0

Answer:

1:40

Step-by-step explanation:

because there are two red continuous so double the no. of total marbles.

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6. Write the inequality using interval notation for the graph.
makkiz [27]

Answer:

C

Step-by-step explanation:

C is the correct answer because it represents exactly what the graph shows with the bold lines.

As you can see in the graph, there is no interception between 7 and 12. Therfore, the answer can't be B(because it represents the area between the two numbers).

A isn't the correct answer either because it represents a dot, which is obviously not the case here since there is no dot.

I can't explain why C isn't the right answer, but I hope that explanation that I gave is enough for you to understand ;)

(If you have any questions about the way I solved it, don't hesitate to ask me in the comments, and if you find my answer helpful - consider marking it Brainliest ÷) )

6 0
3 years ago
Find the value of the following expression
Misha Larkins [42]

Looks like the expression is

(2⁸ • 5⁻⁵ • 19⁰) • (5⁻² / 2³)⁴ • 2²⁸

First, any positive number raised to 0 is 1:

(2⁸ • 5⁻⁵ • 1) • (5⁻² / 2³)⁴ • 2²⁸

(2⁸ • 5⁻⁵) • (5⁻² / 2³)⁴ • 2²⁸

Exponents in a denominator can be rewritten as negative exponents in the numerator:

(2⁸ • 5⁻⁵) • (5⁻² • 2⁻³)⁴ • 2²⁸

Distribute the 4th power across the product 5⁻² • 2⁻³ :

(5⁻² • 2⁻³)⁴ = 5⁻⁸ • 2⁻¹²

so we have

(2⁸ • 5⁻⁵) • (5⁻⁸ • 2⁻¹²) • 2²⁸

Multiplication is associative, so we can ignore the parentheses. Combine factors with equal bases and simplify the exponents:

2⁸ • 5⁻⁵ • 5⁻⁸ • 2⁻¹² • 2²⁸

2⁸⁻¹²⁺²⁸ • 5⁻⁵⁻⁸

2²⁴ • 5⁻¹³

Rewrite the negative exponent as a positive one:

2²⁴ / 5¹³

6 0
3 years ago
Solve: -5.67 + q ≤ 18.67
alexgriva [62]

Answer:

Q=5

Step-by-step explanation:

You simplify and thEn solve for q

5 0
3 years ago
Of the four choices given, which two, when written as a system, have a solution of (–4, 5)?
Alex787 [66]

Answer:

f(x)= 1.8x + 1

Step-by-step explanation:

Just got it right on edge :)]

4 0
3 years ago
Read 2 more answers
HELPPP , me with this please !
Varvara68 [4.7K]

Answer:

Step-by-step explanation:

1/6(1/6)=1/36

3 0
3 years ago
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