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2 years ago

A single die is rolled. Find the probability of rolling an even number or a number less than 4

2 answers:

6 0

Even numbers on a dice: 2,4,6 = 1/2 chance.

Numbers less than 6 on a dice: 5/6 chance. 1/2 + 5/6 = 8/6.

8/6 is impossible so we'll take it down to 1. There will ALWAYS be an even number, or a number less than 6.

The answer is 1.

Radda [10]2 years ago

3 0

5/6 because there are 5 possible possibilities and 6 numbers on the dice I'm assuming that the dice has 6 faces.

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What is the solution to the system shown below y=2x-1. Y=2x+3 A (0,0). B(1,-3) C(-1,3). D no solution

Setler [38]

We have that
y=2x-1
and
Y=2x+3
the two lines are parallel
because the slopes are the same
m=2

we know that
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therefore
the answer is the option
D no solution

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2 years ago

6409 divided by 61 = ?

Kitty [74]

105 r4
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3 years ago

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20 POINTS!!! Mr. Moore is installing new work benches in the wood shop. He wants the height of the benches to be best for studen

liubo4ka [24]

A: Suppose Mr. Moore decides to use 20 seventh graders as the sample. Is this sample a random sample? Explain your reasoning.

Ans: No, because he only chose the seventh graders which is invalid since he wants to have to use the mean height which involves the 6th, 7th and 8th graders.

B: Mr. Moore decides to use a random number generator to select 20 students from the school. Suppose that when choosing 20 students using the random generator on the graphing calculator, Mr. Moore’s sample is all eighth graders. Does that mean the sample is not a random sample? Explain your reasoning.

Ans: No, it is still a random sample. Since he is using a random generator, there is a possibility that the random generator would pick all students from the 8th grade. Unlike the first one, the random generator is not biased towards any grade, it is just a coincidence.

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3 years ago

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Let z be the product of any 5 consecutive three digit odd natural numbers. When you multiply

Charra [1.4K]

Answer:

Step-by-step explanation:

If x is the middle number of the 5 consecutive odd numbers, their product is ...

x(x -2)(x +2)(x -4)(x +4) = x(x² -4)(x² -16) = x⁵ -20x³ +64x

The first 3-digit prime is 101, so the product of that with this is ...

101(x⁵ -20x³ +64x) = 101x⁵ -2020x³ +6464x

Since we're only interested in the units digit, we can find the mod 10 value of this to be ...

(x⁵ +4x) mod 10

Possible units digits of x are 1, 3, 5, 7, 9, so possible units digits of this product are ...

x(x⁴ +4) = 1(1⁴ +4) = 5

3(3⁴ +4) = 3(1 +4) = 5 . . . . mod 10

5(5⁴ +4) = 5(5 +4) = 5 . . . . mod 10

7(7⁴ +4) = 7(1 +4) = 5 . . . . mod 10

9(9⁴ +4) = 9(1 +4) = 5 . . . . mod 10

In every case, the units digit of 101z will be 5.

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2 years ago

If you covert the number 673/20 to a decimal, what would it be

fiasKO [112]

Answer:

33.65

Step-by-step explanation:

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2 years ago