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SVETLANKA909090 [29]
3 years ago
10

Ms. Johnson has a box of 60 red and black pens on the shelf. If the ratio of red to black pens is 2 to 3, how many red pens does

she have?
Mathematics
2 answers:
Elena-2011 [213]3 years ago
8 0
Red to Black.
2 to 3.
For every 2 red we have 3 black so
For 4 red we have 6 black and so on..
Notice that
For every 2+3=5 pens we have 2 red ones
If we divide the total number of pens 60 into groups of 5 we will get 60 /5= 12 groups.
12 groups •2 red pens=24 red pens
Ksivusya [100]3 years ago
5 0
40 red pens I believe
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adoni [48]

Answer:

change the equation into one variable.

2 y equals 10 + x

y equals 5 + x by 2

now put that into the second equation

-3x + b parentheses 5 + x / 2 equals 11

-3x+b(5+ x/2)

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What’s the height of the can?
kondaur [170]

Answer:

5 inches

Step-by-step explanation:

The formula to find the surface area of a cylinder is A = 2πrh + 2πr²  

Since we need the height we will need to solve for h

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The two variables for this equation we have no obtained, A = 12π and r = 1, so we can plug them into our equation to solve for the height

  • h=\frac{12\pi -2\pi (1)^{2}  }{2\pi (1)}=h=\frac{12\pi -2\pi  }{2\pi }=\frac{10\pi }{2\pi } =5
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Which number line represents the solution to the inequality 125x + 200 &gt; 1,200?
Elza [17]

Answer:

see below

Step-by-step explanation:

25x + 200 > 1,200

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Anyone who can do math if you can do this one problem that would be cool
nlexa [21]

Answer:

x = 11; z = 16

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180 - 64

6 0
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