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stich3 [128]
3 years ago
12

Simplify: 20 - 2 × 8 + 42 A. 20 B. 160 C. 52 D. 26

Mathematics
1 answer:
Gnom [1K]3 years ago
5 0

Answer: 46

Step-by-step explanation:

You can simplify this using PEMDAS:

Parentheses

Exponents

Multiplication/division

Addition/subtraction

Move through the steps in that order.

In this case, the first two steps are absent, so multiply first:

20 - 16 + 42

Then, add and subtract:

46.

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A student randomly draws a card from a standard deck and checks to see if it is his favorite suit he then returned to card to th
tensa zangetsu [6.8K]

Answer:

The binomial probability formula can not be used for this experiment because it does not state the number of times he expects to draw his favorite suit.  

Step-by-step explanation:

The binomial probability formula is expressed as follows:

P (k success in n trials) = \left \{ {{n \atop k} \right. p^{k}q^{n-k}

n = number of trials, k = number of successes, n-k = number of failures, p = probability of success in one trial and q = 1 - p = probability of failure in one trial.  

In the given problem, all of the variables are known except for 'k', the amount of times that the student predicts he will draw his favorite suit.  

8 0
3 years ago
How do u round 33 and 89 to estimate their sum
Zolol [24]
33 would round down. (30)

This is because the second 3 is smaller than 5 and when your rounding, if number your rounding is smaller then 5 you will round down

89 would round up. (90)

This is because the 9 is larger than 5 which means you would round up.


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6 0
3 years ago
The copy machine runs for 20 seconds and then jams. About how many copies were made before the jam occurred? Round your answer t
dangina [55]

Answer:

10.7

Step-by-step explanation:

7 0
3 years ago
What do two equivalent expressions always h av in common
mixer [17]
-they can get the same answer
8 0
3 years ago
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According to the square root property, the solution set of x 2 = 25 is {±5}.<br> True<br> False
babymother [125]
I believe the correct answer is true. According to the square root property, the solution set of x^2 = 25 is {±5}. <span>The </span>square root property<span> is one method that is used to find the solutions to a quadratic (second degree) equation. This method involves taking the </span>square roots <span>of both sides of the equation. Hope this answers the question.</span>
8 0
3 years ago
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