Question

To fit in an existing frame, the length, x, of a piece of glass must be longer than 12 cm but not longer than 12.2 cm. Which inequality can be used to represent the lengths of the glass that will fit in the frame?

Answer 1

12 < x ≤ 12.2
12 > x ≤ 12.2
x > 12 or x ≤ 12.2
x < 12 or x ≤ 12.2

Answer 2

A

Answer 3

thanks i have 2 more questions can u help me with them

Answer 4

sure

Answer 5

Ori needed at least $1.47 in postage to mail an envelope to his cousin overseas. If x represents the number of $0.44 cent stamps he has and y represents the number of $0.10 cent stamps he has, the inequality representing the number of stamps he can use to mail the envelope is 0.44x + 0.10y ≥ 1.47.

If Ori uses all 3 of the $0.44 cent stamps he has, what is the minimum number of $0.10 stamps he needs to use?

Answer 6

plug in 3 for x and then solve for y

Answer 7

1.5 ?

Answer 8

yep. so what is the minimum

Answer 9

wait isnt that the answer just 1.5

Answer 10

i don't think you can have 0.5 of a stamp, so i would just round up to 2 stamps

Answer 11

yeah but it doesn't say to round

Answer 12

but thanks my last question is

Answer 13

Which description of the graph of the linear equality y > 3x – 8 is correct?
A. The graph will be a dashed line with a y-intercept of negative eight and a slope of three. The graph will be shaded below the line.
B. The graph will be a solid line with a y-intercept of three and a slope of negative eight. The graph will be shaded above the line.
C. The graph will be a solid line with a y-intercept of three and a slope of negative eight. The graph will be shaded below the line.
D. The graph will be a dashed line with a y-intercept of negative eight and a slope of three. The graph will be shaded above the line.

Answer 14

https://www.wolframalpha.com/input/?i=graph+of+y%3E3x-8

Answer 15

B

Answer 16

?

Answer 17

y = mx + b

Answer 18

m is the slope, b is the y-int

Answer 19

then its C

Answer 20

looking at the equation y > 3x – 8, what is the slope?

Answer 21

3

Answer 22

ok and what is the y-int

Answer 23

-8

Answer 24

that's right, and is the graph shaded above or below the line?

Answer 25

above

Answer 26

but at the same time isn't it a solid line ?

Answer 27

No it's a dashed line because > means it's greater than but not equal to the line

Answer 28

\[ \ge\]

Answer 29

OOOH OMG SORRY I WAS SLOW ... I REMEMBER THIS NOW
thanks a lot the answer is D

Answer 30

would have a solid line

Answer 31

That's right, good job

Answer 32

THANK YOU A LOT SIR :)

Answer 33

no problem