3 years ago

PLEAASE HELP DUE TODAY

Mathematics

1 answer:

Kryger [21]3 years ago

8 0

Answer:

I'm not sure but try 13.5.

Step-by-step explanation:

It might not be correct sorry

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You play a game that involves rolling a die. You can roll as many times as you want, but if you roll a six your score is zero an

anyanavicka [17]

Answer:

Step-by-step explanation:

P(6) = ⅙

Expected no. of trials for first 6:

1 ÷ (1/6) = 6

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3 years ago

(Calculus help, 25 points, will give brainliest) Find the sum of the sigma notation below.

Andreyy89

$\displaystyle\sum_{i=3}^{10}(2i-9)=2\sum_{i=3}^{10}i-9\sum_{i=3}^{10}1$

Recall that

$\displaystyle\sum_{i=1}^n1=n$

$\displaystyle\sum_{i=1}^ni=\frac{n(n+1)}2$

Your sums start at $i=3$ , so in order to apply these formulas directly, you need to compensate for the missing first two terms:

$\displaystyle\sum_{i=3}^{10}1=\sum_{i=1}^{10}1-(1+1)=10-2=8$

$\displaystyle\sum_{i=3}^{10}i=\sum_{i=1}^{10}i-(1+2)=\frac{10\cdot11}2-3=52$

$\implies\displaystyle\sum_{i=3}^{10}(2i-9)=2\cdot52-9\cdot8=\boxed{32}$

4 0

3 years ago

Which of the following is a perfect square trinomial?

myrzilka [38]

I think the answer is A

7 0

2 years ago

Solve for x if 5x + 6 = 16 A) x=5 B) x=6 C) x=1 D) x=2

KIM [24]

Answer:

the answer is D

Step-by-step explanation:

5x+6=16

-6 -6

5x=10

divide both sides by five

x=2

3 0

3 years ago

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One quarter of a certain number added to one eighth of the same number is 12. What is the number

alexdok [17]

Answer:

Step-by-step explanation:

let the number be n , then

$\frac{1}{4}$ n + $\frac{1}{8}$ n = 12 ( multiply through by 8 to clear the fractions )

2n + n = 96

3n = 96 ( divide both sides by 3 )

n = 32

The number is 32

6 0

3 years ago