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olga_2 [115]
3 years ago
5

Isabella spends $4.87 on paintbrushes and paint. How many of each item does she buy? Explain how you found your answer. Paint br

ush=$0.95Paint=$0.75

Mathematics
1 answer:
Lelechka [254]3 years ago
8 0
The complete question in the attached figure

Let 
x-----------------> number of <span>paintbrushes----------- > $0.95 each
y---------------- > number of jar of paint-------------- > $0.99 each

we know that
0.95x+0.99y = </span><span>$4.87
</span><span>
using a graph tool

</span>the solution will be a pair of coordinates that are whole numbers -- > see the attached figure
<span>
the solution is the point (2,3)

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

the answer is
number of paintbrushes=2
number of jar of paint=3<span>

</span>

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Problem Page
Orlov [11]

If order matters, then there are 12 ways to do this

If order does not matter, then there are 6 ways to do this

===========================================

We have 4 choices for the first slot and 3 choices for the next (we can't reuse a letter) so that's where 4*3 = 12 comes from

If order doesn't matter, then something like AB is the same as BA. So we are doubly counting each possible combo. To fix this, we divide by 2: 12/2 = 6

To be more formal, you can use nPr and nCr to get 12 and 6 respectively (use n = 4 and r = 2)

7 0
3 years ago
What is the slope of the line that passes through the points (-2,-12) and (1,-3)?
Nookie1986 [14]

Answer:

3

Step-by-step explanation:

Change in Y/Change in X = Slope

8 0
3 years ago
Read 2 more answers
10.
yan [13]

Answer:

D. y = -5^x – 27

Step-by-step explanation:

Find the negative reciprocal of the slope of the original line and use the point-slope formula  y − y 1 = m ( x − x 1 )  to find the line perpendicular to  − x + 5 y = 14 .

y = − 5 x − 27                         PERPENDICULAAR

...................................................................................................................................................

Find the slope of the original line and use the point-slope formula  y − y 1 = m ( x − x 1 )  to find the line parallel to  − x + 5 y = 14 .

y = 1 /5 x − 1                             PARALLEL

7 0
3 years ago
Can someone please help, I’ll mark as brainliest
BaLLatris [955]

Answer: (3,inf)

(-inf,3)

Step-by-step explanation:

6 0
2 years ago
THIS IS DUE IN 3 MINUTES HELPP!!!!
algol [13]

Answer:

C

Step-by-step explan:

I rlly hope this is right im sorry if its not.

3 0
3 years ago
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