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yaroslaw [1]
3 years ago
7

Line QR goes through points Q(0,1) and R(2,7). which equation represents line QR

Mathematics
2 answers:
vodka [1.7K]3 years ago
3 0
M= (7-1)/(2-0)=3
y=3x + c
plug in Q 
1= 3 x 0 +c
=> c =-2
=> the equation represents line QR is y=3x -2
Ainat [17]3 years ago
3 0

y – 1 = 3x

since Q is (0,1) that would make 1 the y-intercept.

using a formula to find the slope we end up with 3.

1 is a negative because when moved to the other side it must be positive.

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Write the sentence as an inequality. Then solve the inequality.
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4 0
3 years ago
A shopkeeper purchased 60 pencil boxes for 4.500 and sold at the rate of 4.125 for 50 pencil boxes. How
VARVARA [1.3K]

Answer: 10%

Step-by-step explanation:

Since the shopkeeper purchased 60 pencil boxes for 4,500, he purchased them at the rate of:

= 4500 / 60

= 85 per pencil box

If the shopkeeper sold them at the rate of 4,125 for 50 pencil boxes, then he sold them at the rate of:

= 4125 / 50

= 82.50 per pencil box.

Therefore the percentage profit will be:

= Gain / Cost price × 100

= (82.50 - 75) / 75 × 100

= 7.5/75 × 100

= 10%

8 0
2 years ago
Please help ....!!!!!
Alinara [238K]

Answer:

4

Step-by-step explanation:

44444444444444444

7 0
3 years ago
Please help me I don't know how to do it
poizon [28]
Findd total collected
add everybody
fri+sat+sun+mon=
21+5 and 5/6+2.75+4 and 5/8
add what you can
21+5+2.75+4+5/6+5/8=
28.75+5/6+5/8
add the fractions by making denom same
5/6+5/8=20/24+15/24=35/24=1 and 9/24=1 and 3/8
28.75+1 and 3/8=29.75+3/8
that is how many barels total
times 205 since that is how many litesr in each bottle
205 times (29.75+3/8)=
205*29.75+205*(3/8)=
6098.75+76.875=
6175.625

29/30 is lost

1//30 remains
9175.625 times 1/30 (aka divided by 30)=205.854166666666666 litesr
205 bottles (and 0.85 partially full bottle)
3 0
3 years ago
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