Question

can you plz help as much as you can
1)Select the choice that translates the following verbal phrase correctly to an algebraic expression:

the difference of c and 10

c + 10
10c
10 ÷ c
c − 10

2)The official weight, in pounds, of four high school wrestlers is as follows:
Wrestler A Wrestler B Wrestler C Wrestler D
Weight 124.5 125.3 124.9 124.2


If the weight data are accurate to the nearest ones place only, which wrestler has a different weight?
Wrestler A
Wrestler B
Wrestler C
Wrestler D

Answer 1

3)Evaluate the following expression using the values given:

Find 2x − 3y − z if x = −2, y = 3, and z = −2

−11
11
−15
15

4)Martin wants to plot a graph to show the prices of different numbers of helmets. He has to plot the following points:

(1, 24.97), (2, 49.94), (3, 74.91), (4, 99.88)

Which of the following best describes how the y-axis should be labeled?

From 0 to 300 at intervals of 50
From 0 to 100 at intervals of 25
From 0 to 500 at intervals of 100
From 0 to 80 at intervals of 10

5)It took Everly 55 minutes to run a 10-kilometer race last weekend. If you know that 1 kilometer equals 0.621 mile, how many minutes did it take Everly to run 1 mile during the race? Round your answer to the nearest hundredth.

3.41 minutes
5.50 minutes
6.21 minutes
8.86 minutes

Answer 2

@Koikkara

Answer 3

@Study_man can you help me

Answer 4

@itsnotjesse the difference of c and 10 .... just the waqy you subtract \(2−3=-1\)

Answer 5

so it would be d right because you subtract @Koikkara

Answer 6

@Koikkara right?

Answer 7

@Koikkara ?

Answer 8

@Study_man can you help me plz

Answer 9

@itsnotjesse yes \(c-10\)

Answer 10

@Koikkara ok thank you and can you help me with any more ?

Answer 11

these are the four different weights:
Weight 124.5 125.3 124.9 124.2
@itsnotjesse check which one is not \(below~.5\)

Answer 12

124.9 and 124.5 but i think its 124.9

Answer 13

Here, if the decimal value is \(= or < than~ 5, ~the ~decimal~value~changes~i.e,, \) 124.9=125. \(you~are~right~!!\) @itsnotjesse

Answer 14

@Koikkara ok thank you is that all or can you help with more

Answer 15

next one, \(2x − 3y − z ,~x = −2, y = 3, ~z = −2\) substitute the values..

Answer 16

im sorry can you help me a bit more to jog my memory i dint remember how to do this

Answer 17

in place of x,y,z put the values, you are done

Answer 18

\(2x-3y-z=0\)
\(2*(-2)-3*(3)-(-2)=0\)

Answer 19

so x,y,z i would replace them with -11 and see if it works and also with the others

Answer 20

\(-4-9+2\)= \(-11\) @itsnotjesse

Answer 21

so i was right the answer was -11

Answer 22

?

Answer 23

Yes

Answer 24

ok thank you can you help me with the last two?

Answer 25

@itsnotjesse next one... the point has the form of \((x,y)\)
so there are 4 points given, can you tell me what is the maximum value of the y given ? ?

Answer 26

99.88

Answer 27

Correct, so we just need the y axis to be that long.
so what interval of y you think we can take ?

Answer 28

25?

Answer 29

@itsnotjesse c'mon... you did everything by yourself

yes..you are right

Answer 30

ok so it's B

Answer 31

Yes, and the last one, is here... http://openstudy.com/study#/updates/557f391ee4b07028ea60595b

@itsnotjesse \(\color{blue}{\huge\tt{Nice~}}\) \(\huge\mathcal{to~meet~}\) \(\color{red}{\huge\tt{You~!}}\)

Answer 32

@Koikkara ok thanks for all your help