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kolbaska11 [484]
3 years ago
11

a five-question quiz is taken in which the first and second questions have four answer choices the third and fourth questions ha

ve three answer choices and the last question has five answer choices a student randomly marks an answer for each question, what is the expected number of questions he will answer correctly

Mathematics
1 answer:
suter [353]3 years ago
7 0

Answer:

1.37

Step-by-step explanation:

1

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HELP ASAP solve the equation using the properties of equality.<br><br><br>89= -5d+9
sergey [27]

Answer:

d = -16

Step-by-step explanation:

Step 1: Write equation

89 = -5d + 9

Step 2: Solve for <em>d</em>

<u>Subtract 9 on both sides:</u> 80 = -5d

<u>Divide both sides by -5:</u> -16 = d

Step 3: Check

<em>Plug in x to verify if it's a solution.</em>

89 = -5(-16) + 9

89 = 80 + 9

89 = 89

8 0
3 years ago
Which expression is equivalent to<br> (r-7)6?
lapo4ka [179]

Answer:

Step-by-step explanation:

The expression equivalent to

( r^{-7})^{6}     \\is\\\frac{1}{r^{42} }

Hope it helps :)

3 0
3 years ago
Kelly bought a new pair of shoes for $9.95. Wendy paid 4.2 times this amount for a new pair of shoes. What price did Wendy pay f
ExtremeBDS [4]

wendy paid $41.79.

kelly's shoes were $9.95, and wendy paid 4.2 times more.

just multiply 9.95 with 4.2.

9.95 x 4.2 = 41.79

7 0
4 years ago
Solve this:/ 2m - 5 - 5 = -3m + 15
ValentinkaMS [17]
2m-5-5= -3m +15
2m -10= -3m+15
2m+3m= 15+10
5m= 25
m= 25/5
m=5
5 0
4 years ago
Write a power represented with a positive base and a positive exponent whose value is less then the base
sasho [114]

Answer:

The question is open ended as i suppose since there are infinitely many possibilities. one possible form of the solution can be 5^{2}

Step-by-step explanation:

The base in this case is 5 while the exponent is simply the power to which the base is raised in which case it would be 2. Both values are positive and the exponent is less than the base.

6 0
3 years ago
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