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anzhelika [568]
3 years ago
11

Please + brainliesting.

Mathematics
1 answer:
gogolik [260]3 years ago
6 0

Answer:

a) 0.3125

b) 45

Step-by-step explanation:

Remark

5 students own a smart phone

11 do not.

Part A

The probability of owning a smart phone is 5/16. Where did the 16 come from.? You must use a total for the sample. You can't choose someone without a smart phone and figure out the probability of doing that if you use 11  in the denominator.

So the answer is 5/16 = 0.3125

Part B

You have to set up a proportion for this.

x / 144 = 5/16  

Notice where the 144 goes. It is across from 16. Both of them represent the total number of students. Multiply both sides by 144

x * 144 / 144 = 5 * 144/16

x = 720 / 16

x = 45

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grin007 [14]

Answer:

all work is shown and pictured

6 0
3 years ago
The difference of a number divided by 7 and 9 is equal to 2. use the variable C what the unknown
bogdanovich [222]
Given that the number is C.
The number divided by 7 is C/7
Difference means we will subtract 9 from C/7.
Therefore, the equation will be:
C/7 - 9 = 2 (multiply all terms by 7 to get rid of the fraction)
C - 63 = 14
C = 14 + 63 = 77
5 0
3 years ago
A man sells sugarcane juice in 200ml per one cup. How many cups of sugarcane juice can he dispense from his big rectangular tank
kozerog [31]

Answer:

702

Step-by-step explanation:

multiply 65*40*54

equals 140400

it conversion cm cube is equal to ml

140400/200

it equals 702 cups

4 0
3 years ago
A man owns 3/4 of the share of a business and sells 1/3 of his
quester [9]

Given:

A man owns 3/4 of the share of a business and sells 1/3 of his  shares for Bir 10,000.

To find:

The value of the business in Bir.

Solution:

Let x be the value of the business.

It is given that a man owns 3/4 of the share of a business and sells 1/3 of his  shares for Bir 10,000.

x\times \dfrac{3}{4}\times \dfrac{1}{3}=10000

x\times \dfrac{1}{4}=10000

Multiply both sides by 4.

x=4\times 10000

x=40000

Therefore, the value of the business is 40,000 Bir.

3 0
3 years ago
2. You bought items at Best Buy totaling $290.76. You have a 20%
vovangra [49]

Answer:

Discount = $290.76 × 0.2 = $58.15

Cost After Discount = $290.76 - $58.15 = $232.61

Sales Tax = 0.0625 × $232.61 = $14.56

How Much You Pay = $232.61 + $14.56 = $247.17

Step-by-step explanation:

Discount:

290.76 × 0.2* = 58.152

Round that to 58.15

* Turn 20% into a decimal (0.2)

Cost after Discount:

290.76 - 58.15 = 232.61

Sales Tax:

First turn 6.25 % into a decimal. Which would be 0.0625.

0.0625 × 232.61* = 14.556875

Then we round to the nearest hundredth and you get 14.56.

* We us the amount after the discount instead of the original price.

How much you pay:

232.61 + 14.56 = 247.17

8 0
4 years ago
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