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LUCKY_DIMON [66]
3 years ago
15

Find x 76° 6x-9 47°​

Mathematics
1 answer:
Zina [86]3 years ago
5 0

This is not formatted correctly.

76 degrees and 47 degrees?

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You have a 5-question multiple-choice test. Each question has four choices. You don’t know any of the answers. What is the exper
mrs_skeptik [129]
Each question has four choices, then the probability to guess a correct answer is p= \frac{1}{4} and the probability to select incorrect choice is  q=1-p=1- \frac{1}{4} = \frac{3}{4}.

You have a 5-question multiple-choice test, then n=5. The <span>probability that you will guess exactly three out of five questions correctly is </span>
<span /><span>
</span><span>C_n^kp^nq^{n-k}=C_5^3p^3q^{5-3}= \dfrac{5!}{3!\cdot 2!} \left( \dfrac{1}{4} \right)^3\left( \dfrac{3}{4} \right)^2=\dfrac{1\cdot 2\cdot 3\cdot 4\cdot 5}{1\cdot 2\cdot 3\cdot 1\cdot 2} \cdot \dfrac{9}{1024} =</span>
= \dfrac{90}{1024} = \dfrac{45}{512}.
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6 0
3 years ago
Read 2 more answers
Can someone help me pls I’m stuck on both problems
Degger [83]

Answer:

171

Step-by-step explanation:

6x6x4.75 is 171

3 0
3 years ago
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Here are scores for two softball teams for seven innings. Each team's total score is the sum of the numbers in its row. Rosie's
gladu [14]

Answer:

<h2> T<u>he Susans Bees lost by </u><u>3</u><u> points.</u></h2>

Step-by-step explanation:

Rosie's Riveters has 13 points in all.

The Susans Bees have 10 points in all.

13 - 10 = 3.

5 0
2 years ago
True or false 398+9 = 400+8
defon

Answer: False

Step-by-step explanation:

398 + 9 = 407

400 + 8 = 408

If the equation was 398 + 10 then yes it will be equal to 400 + 8

4 0
3 years ago
Can someone explain how to do this?
Tems11 [23]
         x+7
------------------- =       
  x^2+4x -21

         x+7
= -------------------
    (x+7)(x-3)

       1
= ----------  where x is not equal -7 and 3
    x - 3

answer is A. first choice
4 0
3 years ago
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