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DochEvi [55]
3 years ago
13

Solving proportions Solve for k. 10 3 k 9 k

Mathematics
2 answers:
dem82 [27]3 years ago
8 0

Answer:

k = 30

Step-by-step explanation:

Given

\frac{10}{3} = \frac{k}{9} ( cross- multiply )

3k = 90 ( divide both sides by 3 )

k = 30

masya89 [10]3 years ago
8 0

Answer:

K=30

Step-by-step explanation:

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6) The amount of Jen's monthly phone bill is normally distributed with a mean of $70 and a standard
alexandr402 [8]

Answer:

i)The correct option is  D.) 99.74%

ii) The correct option is B.) 68.26%

Step-by-step explanation:

i) P(10≤X≤70) = P(  (10−40)/10  ≤Z≤   (70−40 )/10 ) =  Pr(−3≤Z≤3)

= 0.9987 - 0.0013 = 0.99734

Therefore the percentage of Jen's monthly phone bills are between $40 and $100 is D.) 99.74%

ii)P(2.1≤X≤3.1) = P(  (2.1 − 2.6) /0.5   ≤ Z  ≤ (3.1−2.6 )/0.5)  =  Pr(−1  ≤Z  ≤1) )

=  0.8413 − 0.1587  =  0.6826

Therefore the percentage of students at college have a GPA between 2.1 a,d 3.1 is B.) 68.26%

5 0
3 years ago
How do I know what the circle and triangle equal to?
Brrunno [24]

Answer:

circle= 5, triangle= 3

Step-by-step explanation:

Please see attached picture for full solution.

8 0
3 years ago
لیست داده و
choli [55]

Given parameters:

Cost price of the article = Nu.28.30

Selling price of the article  = Nu.29.30

Unknown:

Gain percentage = ?

The gain percentage is the same as the percentage profit on a trade.

The formula is given as:

       Gain percentage  = \frac{Profit}{Cost price}  x 100

         Profit = Selling price  - Cost price

                   = Nu.29.30 - Nu.28.30  

                   = Nu. 1

Now input the parameters and solve;

            Gain percentage  = \frac{1}{28.3} x 100

                                          = 3.5%

The gain percent is  3.5%

3 0
3 years ago
The dot plot below shows the hourly rate of some babysitters:
elena55 [62]
3 bhhhh maki cash men un r so if en jus kookie
7 0
3 years ago
Read 2 more answers
Help pls will give brainlist make sure to show work if needed
weqwewe [10]

Answer:

11

Step-by-step explanation:

Just make your dot plot so that the amount of dots corresponding to the number is the amount of times the number shows in the box. :)

4 0
3 years ago
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