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Igoryamba
3 years ago
14

2a + 3b = 5 b = a - 5 How would I solve this ?

Mathematics
2 answers:
Oksana_A [137]3 years ago
7 0
5 the answer isieirjjfjriroeoeoeoosodkdkririeje
lyudmila [28]3 years ago
6 0

Let me help ya

Step-by-step explanation:

lol I do iready too so first replace the varbile with what ever number they have then you multiply it

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PLEASE HELP ASAP!!!!
lina2011 [118]
<h3>Answer:</h3>

System

  • p + m = 10
  • 0.8m = 0.4·10

Solution

  • p = m = 5 — 5 lb peanuts and 5 lb mixture
<h3>Step-by-step explanation:</h3>

(a) Generally, the equations of interest are one that models the total amount of mixture, and one that models the amount of one of the constituents (or the ratio of constituents). Here, there are two constituents and we are given the desired ratio, so three different equations are possible describing the constituents of the mix.

For the total amount of mix:

... p + m = 10

For the quantity of peanuts in the mix:

... p + 0.2m = 0.6·10

For the quantity of almonds in the mix:

... 0.8m = 0.4·10

For the ratio of peanuts to almonds:

... (p +0.2m)/(0.8m) = 0.60/0.40

Any two (2) of these four (4) equations will serve as a system of equations that can be used to solve for the desired quantities. I like the third one because it is a "one-step" equation.

So, your system of equations could be ...

  • p + m = 10
  • 0.8m = 0.4·10

___

(b) Dividing the second equation by 0.8 gives

... m = 5

Using the first equation to find p, we have ...

... p + 5 = 10

... p = 5

5 lb of peanuts and 5 lb of mixture are required.

8 0
4 years ago
Christy solved this problem. A store charged a customer $445.50 for 150 floor tiles . What is the price of each tile? Christy th
Ivan
A is correct because 445.50 Divided By 150 is Equal to $2.97.
5 0
3 years ago
Read 2 more answers
Last week a jacket cost $39.50. This week the price of the jacket decreased by $4.50. What was the percent of the decrease? Roun
zavuch27 [327]
it might be 0.11 or 0.12%
6 0
3 years ago
Read 2 more answers
Can someone help out ??
kupik [55]

Answer:

120 cubes

Step-by-step explanation:

Find the volume of the prism and then divide it by the volume of one cube (which is 1/27 cm):

V = length*width*height = (5/3 cm)(4/3 cm)(2 cm) = 40/9 cm³.

Dividing this result by 1/27 yields

40       27         40*3    

------ * ------ = -------------- = 120

  9        1               1

120 cubes (answer)

7 0
3 years ago
7-x= 49<br> Solve the exponential equation
hjlf

Answer:

x=-42 to check ur answer place it like this 7-(-42) =49 which is correct

8 0
3 years ago
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