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Aleksandr-060686 [28]
3 years ago
13

1. Evaluate. 7b, for b= 5

Mathematics
1 answer:
MrRissso [65]3 years ago
4 0

Answer:

35

Step-by-step explanation:

Since we know that 7 b is the equation and 5 is the value of b we can substitute b in 7 b.

b = 5

7 b = 7 × 5 = 35

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A national survey indicated that 30% of adults conduct their banking online. It also found that 40% are under the age of 50. and
Svet_ta [14]

Answer:

Step-by-step explanation:

Hello!

I'll express all the given percentages as probabilities:

Given the events:

Banking online (Bo)

Under the age of 50 (<50)

P(Bo)= 0.30

P(<50)= 0.40

P(Bo ∩ <50)= 0.25

1) What percentage of adults do not conduct their banking online?

The event "adults that do not conduct their baking online" is the complement of the event "adults that conduct their baking online" Symbolically Bo^c

P(Bo^c)= 1 - P(Bo)= 1 - 0.30 = 0.70

2) What type of probability is 25%?

The probability P(Bo ∩ <50)= 0.25 is a joint probability, it indicates the intersection between both events.

3) Construct a contingency table showing all joint and marginal probabilities.

Check attachment.

4) What is the probability that an individual conducts banking online given that the individual is under the age of 50?

Symbolically:

P(Bo/<50)= <u> P(Bo ∩ <50) </u> = <u> 0.25 </u> = 0.625

                       P(<50)            0.40

I hope it helps!

4 0
3 years ago
What is the answer to <br> 7/9 - 3/8=
antiseptic1488 [7]
7/9-3/8
56/72-27/72
29/72
5 0
3 years ago
223x12 please tell me I'm in my last question and dieing.
svlad2 [7]

Answer:

2,676

Step-by-step explanation:

2,676=223x12

7 0
2 years ago
Solve for x <br><br> x/6= 16/9
Tju [1.3M]

Answer:

x = 32/3

Step-by-step explanation:

Step 1: Write equation

x/6 = 16/9

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

  1. Cross multiply: 9x = 96
  2. Divide both sides by 9: x = 96/9
  3. Simplify: x = 32/3
8 0
3 years ago
At a deli, 56 sandwiches were sold during lunchtime. Twenty-five percent of the sandwiches sold were tuna salad sandwiches. How
denpristay [2]
Answer - 42 Sandwiches

Explanation -
56 is what you start out with. you will need to find 25% of those 56 to see the remaining. So 25% of 56 is 14 because .25 x 56 is 14. You then subtract 56 from the 14 Tuna sandwiches and you’re left with 42.
8 0
3 years ago
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