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ElenaW [278]
3 years ago
8

tim has $45. he buys pens that cost 2.75 each until he has only 12.00 left. if x represents the number of pens purchased.. write

an equation to determine how many pens tim bought

Mathematics
2 answers:
aliya0001 [1]3 years ago
6 0

Solve this equation:  $45 - ($2.75/pen)x = $12.  Simplifying, we get

$33 = ($2.75)x, so that

x = $33 / ($2.75) = 12.

Tim's buying 12 pens leaves him with $12.

fomenos3 years ago
5 0
The answer to the question

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Solve for 2.<br> 2<br> E<br> 92<br> 2<br> 6<br> N<br> 10<br> B<br> 10<br> D<br> help please
Rudiy27

Answer:

Step-by-step explanation:

I think you mean solve for x

Set up a proportion.

The proportion should be set up as

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x/6 = 20/10                Multiply by 6

x = 20*6 / 10

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2 years ago
-3 2/5 - 5/6<br>I dont just need the answer. I wanna know how to do it.​
LenKa [72]

Answer:

so do you mean the step by step??

6 0
3 years ago
Read 2 more answers
Answer...............
kolezko [41]

Answer:

the dif is i would take the plus 9.5% each time cause you could always do over and get you salary even greater and it's better getting a plus then just the 450 every time

Step-by-step explanation:

4 0
2 years ago
Find the equation of the plane with the given description. contains the lines r1(t) = 2, 1, 0 + t, 2t, 4t and r2(t) = 2, 1, 0 +
Genrish500 [490]
The intersection point of the two lines is (2,1,0).
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L1: <1,2,4>
L2: <4,1,15> 
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i  j    k
1 2  4
4 1 15
=<30-4, 16-15, 1-8>
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We know that the plane must pass through (2,1,0), the equation of the plane is

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simplifying,
26x+y-7z=52+1+0=53
or
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Check:
Put points on L1 in the plane
26(t+2)+(2t+1)-7(4t+0)=53   ok
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8 0
2 years ago
Solve for x <br> 5(x-10)=30-15x
timofeeve [1]

Answer:

solution :

    x = 4

Rearrange:

Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :

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Step by step solution :

Step  1  :

Equation at the end of step  1  :

 5 • (x - 10) -  (30 - 15x)  = 0

Step  2  :

Step  3  :

Pulling out like terms :

3.1     Pull out like factors :

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Equation at the end of step  3  :

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Step  4  :

Equations which are never true :

4.1      Solve :    20   =  0

Step-by-step explanation:

4 0
3 years ago
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