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masha68 [24]
3 years ago
13

Blocks numbered 0 through 9 are placed in a box, and a box is randomly picked.

Mathematics
2 answers:
kvasek [131]3 years ago
8 0

A) Since there are 3 (3,5,7) odd primes between 0-9 and there are 10 blocks from 0-9, the probability is 3/10


B)  Since there are 3 (1,4,9) perfect squares above 0 and there are a totally 10 blocks from 0-9, the probability is 3/10.

Anastasy [175]3 years ago
5 0

Answer:P(Prime number) = 0.4

P(Perfect Square>0) =0.1

Step-by-step explanation:There is 10 numbers in the box.

Out of the 10 numbers 4 are prime numbers (2 3 5 7) the probability to pick a prime number is thus 4/10=0.4

The only number greater than zero that is a perfect square is 4. The probability of picking a perfect square bigger than zero is thus 1/10=0.1

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What is the quotient of b^3+4b^2-3b+126/b+7
stepladder [879]
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7 0
2 years ago
PLEASE ANSWERERRREEERRR
Vladimir79 [104]

the operation:

2*10^1 - 4*10^0 = 20 - 4 = 16

Gives a square number.

<h3>How to get a perfect square?</h3>

A perfect square is the product of a number and itself.

As you can see in the example, 16 is a square number. Then let's try to get 16.

To get 16 we can use the difference:

20 - 4

So the first therm needs to be equal to 20, and the second equal to 4.

To write 20 in scientific notation we have:

2*10^1

To write 4 in in scientific notation:

4*10^0

Then the operation:

2*10^1 - 4*10^0 = 20 - 4 = 16

Gives a square number.

If you want to learn more about square numbers:

brainly.com/question/21694652

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5 0
2 years ago
Find the value of x. Then find the missing angle measures of the polygon.
Naily [24]

The sum of the angles equals 540

There are 3 angles that measure (x - 30) and 2 angles that measure (x)

3(x - 30) + 2(x) = 540

3x - 90 + 2x = 540

5x - 90 = 540

5x = 630

x = 126

x - 30   = 126 - 30   = 96

Answer: x = 126,  x-30 = 96

8 0
3 years ago
Austin buys $10 worth of food for his dog each week. There are 52 weeks in a year.
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Step-by-step explanation:

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3 years ago
Multiply and subtract these polynomials and simplify. Enter your response in standard form. (2x^3 − 3x + 11) − (3x^2 + 1)(4 − 8x
Lera25 [3.4K]

Answer:

=26x^3−12x^2+5x+7

Step-by-step explanation:

2x^3−3x+11−(3x^2+1)(4−8x)

Distribute:

=2x^3+−3x+11+24x^3+−12x^2+8x+−4

Combine Like Terms:

=2x^3+−3x+11+24x^3+−12x2+8x+−4

=(2x^3+24x^3)+(−12x^2)+(−3x+8x)+(11+−4)

=26x^3+−12x^2+5x+7

5 0
3 years ago
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