Question

can you please check if i am correct?

Answer 1

@Elsa213

Answer 2

#1, 2 are correct.
#3 hint: -x<4 is the same as x>-4 (i.e. the direction of inequality is reversed when you negate an inequality)
#4 "or" means either one works, so the two part-answers are additive
#5 is correct
#6 work out the two cases
2x+4>14 and
-2x-4>14
then take intersection of the two results, i.e. the part of the result that satisfies both cases.
#7 draw on number line each option and figure out the right answer, which should be equivalent to -40<F<257
#8 is correct.

Answer 3

thanks! @mathmate

Answer 4

you're welcome! :)

Answer 5

@mathmate for 3 it would be D right? and can you help me figure out 7 please?

Answer 6

and let me rephrase that. for 3 it would be A right? @mathmate

Answer 7

#3 3<x<6 is correct.
Please state the values when checking the answer, instead of the letters.
For #7,
recognize that 5/9(F-32) is the same temperature in Celsius.
Also, all options have two separate inequalities, so you need the equivalent of
-40<F, or -40<C, for the lower limit, and
F<257 or C<125 for the upper limit.
So check out each option to see which one has both conditions.

Answer 8

@mathmate 3<x<6 would be A am i correct?

Answer 9

For #3, 3<x<6 would be correct. I will leave that to you to find the options!
Remember that an empty dot refers to strict inequality, and a solid dot refers to >= or <=.

Answer 10

@mathmate thanks

Answer 11

@Michele_Laino

Answer 12

-40 F= -40 C
furthermore:
125 °C= 257 °F
I have used this formula:
\[F = \frac{9}{5}C + 32\]

Answer 13

@Michele_Laino can you help me figure the ones that are not correct out please?

Answer 14

it is simple, you have to compute how many Fahrenheit degrees are these temperatures
-40 C and 125 C

Answer 15

-40 C = -40 F
125 C = 257 F what would i do next ?

Answer 16

@Michele_Laino i know its either A or B now

Answer 17

It is option B)

Answer 18

thankss!! can you help me out with #3?

Answer 19

here we have to solve this inequality:
\[ - 13 > - 5x + 2 > - 28\]

Answer 20

actually, they are two inequalities

Answer 21

what would they be? @Michele_Laino

Answer 22

the first inequality is:
\[ - 13 > - 5x + 2\]
whereas the second one is:
\[ - 5x + 2 > - 28\]
please solve them

Answer 23

first: X>3
second: X<6 correct?

@Michele_Laino

Answer 24

yes! correct!

Answer 25

@Michele_Laino I'm thinking a what do you think?

Answer 26

@Michele_Laino

Answer 27

@mathstudent55

Answer 28

yes! correct!

Answer 29

THANK YOUUU! look. i know I'm really annoying and everything but can you please help me with 4? @Michele_Laino

Answer 30

here, you have to solve these inequalities:
\[\Large \begin{gathered}
4p + 1 > - 7 \hfill \\
6p + 3 < 33 \hfill \\
\end{gathered} \]
what do you get?

Answer 31

P>-2
P<5

@Michele_laino

Answer 32

so, what is the right option?

Answer 33

@Michele_Laino i don't know. the person up there said it wasn't A so i don't know

Answer 34

I think it is A

Answer 35

can you teach me find the 2 inequalities so that i can solve 6 please? @Michele_Laino

Answer 36

the proposed inequlity is equivalent to these two systems of inequalities:
\[\Large \left\{ \begin{gathered}
2x + 4 < 14 \hfill \\
2x + 4 \geqslant 0 \hfill \\
\end{gathered} \right. \cup \left\{ {\begin{array}{*{20}{c}}
{ - 2x - 4 < 14} \\
{2x + 4 < 0}
\end{array}} \right.\]
please solve them

Answer 37

for both them is (-2,5) (-9,2) @Michele_Laino right?

Answer 38

the first inequality gives x>-9
and the second one gives x<-2, so the intersection is:
(-9,-2)

Answer 39

the first solution is correct!

Answer 40

more precisely the first solution, is:
[-2,5)

Answer 41

quick question though. theres a point on a -5 on the number line and you got a -2.... is it supposed to be like that? @Michele_Laino

Answer 42

I don't understand, please specify more

Answer 43

never mind i am seeing double from not sleeping my bad sorry haha @Michele_Laino

Answer 44

ok! :)

Answer 45

@t.ashleyxx

Answer 46

@HelloKitty17

Answer 47

What would seem to be the problem?

Answer 48

let me update this. because i fixed some questions. @t.ashleyxx