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AlexFokin [52]
3 years ago
12

Problem: Isabella is buying art supplies the table shows the prices for the items she buy |table : glass beads $0.28 per ounce $

0.95 paint brush 0.75$ poster board jar of paint $0.99. She spends 2.25 on poster boards how many does she buys Part B Isabella spends $4.87 on paint brushes and paint how many of each item does she buy explain how u found it answer. Can’t figure it out need help !

Mathematics
1 answer:
Murrr4er [49]3 years ago
7 0

the complete question in the attached figure

Part A

we know

price poster boards----------- > $0.75

let

p------------- > number of poster boards

q------------- > money spends on poster boards----------> $2.25

q=p*0.75---------> p=q/0.75=2.25/0.75=3

the answer part A is 3

Part B

Let 

x-------------- >number of paint brushes------------ > $0.95

y-------------- >number of jar of paint ------------ > $0.99

we know

0.95x+0.99y=4.87

using a graph tool

see the attached figure

the solution is the line shown in the graph

the solution must be a pair of whole numbers, <span>the only pair that meets that condition is the point (2,3)

x=2-------------- ></span>number of paint brushes
y=3-------------- >number of jar of paint

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From the image

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\begin{gathered} \angle1=\angle3(vertical\text{ angles)} \\ \angle2=\angle4(vertical\text{ angles)} \\ \angle5=\angle7(vertical\text{ angles)} \\ \angle6=\angle6(vertical\text{ angles)} \end{gathered}

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\begin{gathered} \angle5+\angle6=180^0(supplementary\text{ angles)} \\ \angle5+\angle8=180^0(supplementary\text{ angles)} \\ \angle7+\angle8=180^0(supplementary\text{ angles)} \\ \angle6+\angle7=180^0(supplementary\text{ angles)} \\ \angle1+\angle2=180^0(supplementary\text{ angles)} \\ \angle1+\angle4=180^0(supplementary\text{ angles)} \\ \angle2+\angle3=180^0(supplementary\text{ angles)} \\ \angle3+\angle4=180^0(supplementary\text{ angles)} \end{gathered}

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1 year ago
Susan worked 5 out of 8 hours during the day what percentage of the day does she work
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