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3 years ago

St. Patrick's Day Problem Solving

Mathematics

1 answer:

Evgesh-ka [11]3 years ago

8 0

Answer:

39, 51, 57

Step-by-step explanation:

Multiples of 3:

3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, 39, 42, 45, 48, 51, 54, 57, 60, 63, 66, 69, 72, 75, 78, 81, 84, 87, 90, 93, 96, 99

Cancel out Multiples of 2 (even numbers):

3, 9, 15, 21, 27, 33, 39, 45, 51, 57, 63, 69, 72, 75, 81, 87, 93, 99

Cancel out Multiples of 9:

3, 15, 21, 33, 39, 51, 57, 69, 75, 57, 93

Cancel out Numbers that are not between 30 through 60:

33, 39, 51, 57

Find 3 numbers that add up to 147:

39 + 51 + 57 = 147

Therefore, 39, 51, and 57 are the three lucky numbers.

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Help! I need 3,6, and 8

hoa [83]

Answer:

3. 11 (B)

6. (-2, 18) (D)

8. I see the answer choices now, it would be A.

I don't see any answer options, but anything that goes along the lines of the points form a line, it has a direct relationship, it is linear, etc.

Step-by-step explanation:

3. You are given the expression 6x^2 - 13 and told to evaluate it at x = 2

this yields 6(2)^2 -13 which is 24-13 = 11.

6. You are given the equation y = -9x and 4 choices for ordered pairs. Best way to do this is to plug in the values and see which one works. (But if you want to do this quick you realize that the since you are multiplying one of the values by a -9 this means that the signs of the ordered pair has to be opposite and that only occurs in D (-2, 18) Plug it in and it works.

8. Each time you pay for the meter, it costs $1 or 4 quarters. And you pay per hour. Therefore if the x - axis is time (hours) and the y axis was the number of quarters, you can see that for 1 hour you pay 4 quarters, 2 hours you pay 8 quarters, 3 hours you pay 12 quarters, etc.

You can connect the dots on the graph and you can see that it is linear, you can also verify this by finding the slope between each point and find that the slope (change in y / change in x) is all the same.

5 0

3 years ago

How to graph y=-3x+15

steposvetlana [31]

Answer:

Well first you put the y-intercept on the graph. In this case it would be 15

So graph the point (0,15)

The you do the slope which is 3

so you always do rise over run for slope.

If 3 were a fraction it would be 3/1 so go up 3 points and the go right 1 point from (0,15)

hope this helps .-.

3 0

4 years ago

Need help really badly

Virty [35]

Answer:

Step-by-step explanation:

Points: A, C, E, B, D, F

Line: AB

Line segment: AC, CE, CD, DF, DB

Planes: P, M

Rays: CA, DB

Angles: <ACE=90,< CDF= 90

Parallel lines: line w and line t are parallel to each other

Perpendicular lines: EC is perpendicular to AD and FD is perpendicular to CB

6 0

3 years ago

Solve the equation for b: -4b + 18 = -6

insens350 [35]

The answer is 6:

6+18= 24
24 divided by 4= 6

b=6

4 0

3 years ago

Read 2 more answers

A parallelogram has an area of 37 square feet. If the height of the parallelogram is 4 feet, how many feet is the base?

pogonyaev

Answer:

9.25 ft

Step-by-step explanation:

We know that area of parallelogram= base × height

4 0

2 years ago