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RSB [31]
4 years ago
7

Please explain this step by step and solve within 10-20 minutes please

Mathematics
1 answer:
DaniilM [7]4 years ago
3 0

Answer:

y=\frac{306}{7} is the answer.

In decimal y = 43.71

Step-by-step explanation:

Given:

y varies directly with x .

Also x = 7 when y = 18

To Find:

y = ? when x = 17

Solution:

y varies directly with x .

i.e. y is directly proportional to x

∴ y = k\times x

Where

k = constant of proportionality {Remain Same}

First we will find constant of proportionality k,

∴ When x = 7 and y = 18 we have

∴ 18 = k\times 7\\\\k=\frac{18}{7}

Now when x= 17 and k=\frac{18}{7} we have

∴ y = k\times x

∴ y=\frac{18}{7}\times 17\\\\y=\frac{306}{7}\\\\ y=43.71

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30x40x60=72,000. with area you do LxWxH
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4 years ago
There are 4 blueberry, 6 raisins, and 2 plain bagels in a bag. Mike randomly selects two bagels without replacing the first bage
rodikova [14]

Answer:

The probability that he selects a raisin bagel and then a plain bagel is \frac1{11}.

Step-by-step explanation:

Probability:

The ratio of the number of outcomes of favorable event to total number of all possible outcomes is called probability of the favorable event.

Probability=\frac{\textrm{The number of favorable outcomes}}{\textrm{Total number of all possible}}

Given that, there are 4 blueberry, 6 raisins and 2 plain bangles in a bag.

Total number of bangles= (4+6+2)

                                        = 12

The probability that he selects a raisin

=\frac{\textrm{Number of raisin bangles}}{\textrm{Total number of bangles}}

=\frac{6}{12}

=\frac12

Total number of remaining bagels is =(12-1)=11

After selecting a raisin  bagel,the probability that he selects a plain bangle is

=\frac{\textrm{Number of plain bangles}}{\textrm{Total number of bangles}}

=\frac{2}{11}

Selecting of a raisin bangle and a plain bangle are both independent event.

The probability that he selects a raisin bagel and then a plain bagel is

=\frac{1}2\times\frac{2}{11}

=\frac1{11}

3 0
3 years ago
Write the scientific notation for 2,460,000
Diano4ka-milaya [45]
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4 0
4 years ago
Can someone help me please?
frutty [35]

The surface area of the cone is: A. 184π units².

<h3>What is the Surface Area of a Cone?</h3>

Surface area of a cone = πr(l + r), where r is the radius and l is the slant height.

Given the following:

  • Slant height (l) = 15 units
  • Radius = (r) = 8 units

Surface area of a cone = π8(15 + 8)

Surface area of a cone = 184π units²

Learn more about surface area of a cone on:

brainly.com/question/10506554

#SPJ1

3 0
2 years ago
PLS HELP ME QUICK BRAINLIEST +15 POINTS!!!!!
Ipatiy [6.2K]

Answer:

3/4

Step-by-step explanation:

The mean of a data set is synonymous with the average. To find the mean, add up all the values in the data set and then divide by the number of elements.

From the table, there is 12 values. Thus, add up all the 12 values and then divide by 12:

\bar x=\frac{(-3)+4+8+(-1)+(-4)+(-2)+0+2+5+2+(-3)+1}{12}

Simplify:

\bar x=\frac{9}{12}

Reduce:

\bar x=3/4

Therefore, the mean of the data set is 3/4.

For the data set, this means that the average person guesses the temperature too high by about 3/4°F.

(Note: the symbol of x with a bar over it denotes the mean of a set)

7 0
3 years ago
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