Question

I need help..........pronto!

Answer 1

Can you wait a little so I can write the word problem?

Answer 2

Yeah that's fine

Answer 3

A baseball pitcher makes 53 pitches in the first four innings of a game and plans to pitch in the next three innings. the baseball coach assigns a maximum of 105 pitches to the pitcher in the game. Write and solve an inequality to find the possible average numbers of pitches that the pitcher makes in each of the next three innings.

Answer 4

Ok lets start by figuring out how many pitches he has left of his allotment

Answer 5

Okay,
So
1O5-53=52

Answer 6

Ok good. So now he has to spread those 52 pitches over 3 innings. To figure out how much he needs to average per inning, simply divide the number of pitches he has left by the number of innings he has left...so in this case 52/3

Answer 7

52/3 = 17.333333333

Answer 8

Hey sorry my openstudy locked up. the pitcher has to average <= 17.33 pitches per inning the rest of the way to finish his 3 innings under his pitch allotment. Make sense?

Answer 9

Kind of but is that my answer or do I round it?

Answer 10

According to the problem you wrote down, you don't have to round it to a whole number. 17.33 is rounded to some degree already.

Answer 11

Oh........ Okay! :)








Don't go anywhere I need your help again.

Answer 12

Ha ok

Answer 13

Describe and correct the error in the inequality.

-4(2x+3)< -13
-8 -12<28
-8x<40
X<-5

Answer 14

Where did the 28 come from in the second line? should be -8x-12<-13 right

Answer 15

Oh okay then thAts what's wrong. now how would I describe that?

Answer 16

Just scratch out the second line and write the proper inequality. There's another error at the bottom -8x<40 implies x>5. You have to flip the inequality when dividing by a negative.

Answer 17

x>-5 is what I meant

Answer 18

Is that the description that I should write?

Answer 19

You should write what you understand. It's not going to help you to write what I understand

Answer 20

Oops major fail! The -13 IS supposed to be a positive 28. :'/

Answer 21

Sorry!

Answer 22

Oh ok well then it's just the second thing I mentioned.

Answer 23

Phew! Okay.

Answer 24

What's the area question?

Answer 25

Okay I'm on the iPad so I can't draw......so I'll explain it.
Area> 81square ft
Then there's a square
The bottom side is (x+2)ft.
The right side is 9ft.

Answer 26

Like that?

Answer 27

I need to write and solve an inequality for it.

Answer 28

And yes, like that

Answer 29

Ok what's the formula for area of a rectangle?

Answer 30

It's a square.
But the formula is length times with times two

Answer 31

If it was a square we wouldnt need any inequality..it's a rectangle. And the formula is actually length*width. So express the area of this rectangle in terms of what's given.

Answer 32

Okay................
X+2*9= x. ?

Answer 33

Close.. Area = length*width so in this case Area = (x+2)*9. The parentheses are important. Now what else do we know about the area from the problem?

Answer 34

That area =81sq. Feet

Answer 35

Well actually area > 81 sq. feet. Now just substitute our expression for area into that inequality. What do you get?

Answer 36

(x+2)9>81 sq. feet

Answer 37

Right...so now just to solve the inequality. Do you know how to do that?

Answer 38

Yeah, let me solve it and I'll tell you the answer in a minute.

Answer 39

Sounds good

Answer 40

Wait........what's the first step again?
Just to explain all the questions.......I just started seventh grade.

Answer 41

Yeah I figured...I remember 7th grade. So do you know how to solve it if it were an equation...In other words could you solve (x+2)9=81

Answer 42

Well to dumb it down I woul proBably subtract nine

Answer 43

The first step would be actually to divide each side by 9... Then you would have (x+2)*9/9 on the left side which = x+2. On the right side you would have 81/9

Answer 44

Got it thanks . Don't go yet because I have another area problem

Answer 45

Did you solve the inequality?

Answer 46

No.

Answer 47

Well how about the equation? We got it to x+2 = 9 right. Now how do we get x?

Answer 48

Hey.......
So 9-2 =7
7/2 = 3.5

Answer 49

Why are you dividing by 2? You just want x alone on the left side. the first line is right...x = 7

Answer 50

The equality is the same thing except replace the = by a >

Answer 51

Oh.....okay.

Answer 52

so x>7

Answer 53

Well that was difficult.

Answer 54

Ha don't worry. Just takes practice

Answer 55

Okay so the next one is the same thing, but it's a triangle.
Area=44sq. Cm.
The bottom is (x+1)
The left side is 8cm

Answer 56

Ok what should be the first step?

Answer 57

Writing it in an inequality?

Answer 58

Well seems like there is no inequality in this case so I would just write an equation for the area.

Answer 59

Okay........(x+1)8>44

Answer 60

but it's a triangle right so area = .5*base*height

Answer 61

Oh so it's.......(x+1)*8. ?

Answer 62

Haha that's exactly what you had before...should be .5*(x+1)*8>44

Answer 63

i think the pickle is right

Answer 64

I'm kind of a big dill

Answer 65

?

Answer 66

What's confusing you?

Answer 67

I can't solve it. I wasn't taught that you multiply it by five.

Answer 68

I'll get you started
.5*(x+1)*8>44
(x+1)*8>88
The rest is just like the previous problem.

Answer 69

Thanks. Can you become my fan? And is it okay if I message you for help? Of course I would only message you when you are on open study.

Answer 70

Yeah go ahead.

Answer 71

Cool thanks

Answer 72

Do you know anybody that is a really good "tutor" on open study?

Answer 73

Cause you know.......... I NEED th extra help!

Answer 74

Ha the important thing is that you care enough to try to get help...you'll be fine. I'm not sure about tutors. I'm not an expert on the site. My friend helps make and run this website so I just come to answer questions from time to time. I can ask him.

Answer 75

Oh thanks okay...... Like you said i am trying to look for extra help because my dad says that if I do good in school I ll do goog in the future. specially with what I want to be when I grow up.

Answer 76

And what is that?

Answer 77

Fashion designer

Answer 78

Ah interesting. My girlfriend is an interior designer. Lots of art but it's good to know math too.

Answer 79

Here's a good place to learn algebra: http://www.mathsisfun.com/algebra/index.html

You should go through the basics section at least. It will help you understand this stuff much better.

Answer 80

Yeah especially when your trying to do the math of where all the money goes too. I'm not there yet, but that's where I'm going to need math. Ggood for your girlfriend, interior design is a really good job

Answer 81

I'm actually taking art as my elective this year.

Answer 82

That's great. I hope you like it. Art is a lot of work too. When my girlfriend was in college she had to do self portraits for 4 hours at a time and often worked all weekend and all night on her projects.

Answer 83

Really wow! I signed up for art because I thought it would help with my designing.