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lutik1710 [3]
3 years ago
7

Mary has 23 marbles 7/23 of the marbles are yellow and 13/23 of the marbles are blue the rest of the marbles are green how many

marbles are green explain how you know
Mathematics
1 answer:
deff fn [24]3 years ago
8 0

Answer:

The answer here is 3.

Step-by-step explanation:

Since 7 of the marbles are yellow and 13 of them are green, you would first add these numbers together to find the number of marbles that are not green. After doing this you will find that 20 of the marbles aren't green. Since there are 23 marbles, and 20 of them aren't green, you would subtract these two numbers to find that the number of green marbles is three.

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Graph a line that contains the point (-5,-3) and has a slope of -2
Tpy6a [65]

Answer:

-->

Step-by-step explanation:

Graph (-5,-3) and use the slope, -2, to find another point. -2 can also be written as -\frac{2}{1}

\frac{rise}{run} =\frac{-2}{1} and  \frac{rise}{run} =\frac{2}{-1} **

Use both. This works because either way, they will lie on the same line with the same slope. So, starting at (-5,-3), go down two points (-)* and to the left 1 (+)*, then, starting at (-5,-3) again, go up two points (+)* then to the right 1 point (-)*.

* If the number is negative, you either go down or to the right. If the number is positive, you go up and to the left.

**Rise over run refers to the change in the y-axis and the change in the x-axis: \frac{rise}{run} =\frac{y-axis}{x-axis}. Only one number is negative because, if both were negative, that would make a positive number, but the slope is -2, not 2.

Another way you could do this is by finding points first. All you need to do is turn the slope into a "point". Remember, 2 is the y and 1 is the x:

-2=-\frac{2}{1} = (1,-2) and (-1,2)

Then, using (-5,-3) and your new points, add them separately:

(-5,-3)+(1,-2)\\(-5+1,-3+(-2))\\(-5+1,-3-2)\\(-4,-5)

(-4,-5) is one point

(-5,-3)+(-1,2)\\(-5+(-1),-3+2)\\(-5-1,-3+2)\\(-6,-1)

(-6,-1) is another point. Connect the three points. You can check your work on the graph:

3 0
3 years ago
A gallon of paint covers 400 square feet. How many square feet will 2 3/8 gallons of paint cover. How do you solve this problem.
PSYCHO15rus [73]

Answer:

Hey there!

1 gallon=400 square feet

2 3/8 gallon= 400 (2 3/8) square feet

2 3/8 gallon= 950 square feet.

Let me know if this helps :)

5 0
3 years ago
Suppose a railroad rail is 3 kilometers and it expands on a hot day by 20 centimeters in length. Approximately how many meters w
siniylev [52]

Answer:

sadfasdfasdfasdf

Step-by-step explanation:

asdfasdfasdfsadfsadfsadfsdfsdfsaf

4 0
3 years ago
tim and his brother are building towers out of blocks. Tim is using blue blocks that are 6 cm tall and his brother is using gree
Karolina [17]

The shortest possible height of tower is 24 cm.

Tim used 4 blue blocks and his brother used 3 green blocks.

Step-by-step explanation:

Given,

Height of blue block = 6 cm

Height of green block = 8 cm

We will take least common multiple to find the shortest possible height.

6 = 2*3

8 = 2*2*2

LCM = 2*2*2*3 = 24 cm

The shortest possible height of tower is 24 cm.

Number of blue blocks used = \frac{24}{6} = 4

Number of green blocks used = \frac{24}{8} = 3

Tim used 4 blue blocks and his brother used 3 green blocks.

Keywords: LCM, multiplication

Learn more about multiplication at:

  • brainly.com/question/11203617
  • brainly.com/question/11253316

#LearnwithBrainly

7 0
3 years ago
Mr. Grant spent $8.40 to place an ad in the newspaper. This price included a one-time fee of $6.00 plus $0.08 per word. Which me
kondaur [170]

Answer:

He used 30 words

Step-by-step explanation:

(8.40 - 6.00) divided by 0.08 = the number of words

7 0
3 years ago
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