Question

I NEED HELP PLEASE

Evaluate the following expression using the values given:

Find 2r2 + 3s3 - r2 + 4t2 - r2 if r = -2, s = -3, and t = 5.

-19

-37

27

19

Answer 1

2 * -2^2 + 3 * -3^3 - 2^2 + 4 * 5^2

Answer 2

what would the answer be

Answer 3

Use PEMDAS to find out.

Answer 4

iI don't know may you help

Answer 5

the last time i did i got 40 which is wrong

Answer 6

Sure!
First you need to solve the terms with exponents.
What is:
-2^2
-3^3
-2^2
5^2

Answer 7

ok

Answer 8

so it the answer would be : -4, -9.-4, and 10

Answer 9

-3^3 is not -9. Think of -3^3 as:
-3 * -3 * -3

Answer 10

The others are correct.

Answer 11

oh srry that was stupid mistake lol it suppose to -27

Answer 12

Correct.

Answer 13

ok

Answer 14

what is next

Answer 15

2 * -4 + 3 * -27 - 4 + 4 * 10
Now you add, don't multiply yet.

Answer 16

ok

Answer 17

i need help with that

Answer 18

-4 + 3
-4 + 4

Answer 19

ok

Answer 20

the first one would be -7 and the next one would be -8?

Answer 21

No. Try again.

Answer 22

um r u subtracting

Answer 23

Sure, you can do that.
3 - 4
4 - 4

Answer 24

the first one is -1 and second is 0

Answer 25

Correct. So:
2 * -1 * -27 * 10

Answer 26

Now you can solve.

Answer 27

r those little star things suppose to be time signs

Answer 28

Yes, you don't put x because x is a variable.

Answer 29

ok i understand

Answer 30

x is for when you're still in Elementary school.

Answer 31

ok

Answer 32

Wait, you made a mistake that I didn't notice, one second.

Answer 33

first one is -2

Answer 34

second one is -270

Answer 35

r u still there

Answer 36

helllp i need help remember

Answer 37

HEELLLP CAN YOU HELP ME OR ARE U JUST GOING TO DO NOTHIN THIS IS IMPORTANT

Answer 38

ur not helping

Answer 39

@dan815

Answer 40

uh

Answer 41

Sorry I was busy.

Answer 42

oh its fine r u back

Answer 43

yeah

Answer 44

ok

Answer 45

what is the answer

Answer 46

r u there

Answer 47

Ugh, I'll give it only because you waited so long.

Answer 48

ok

Answer 49

It's 7. :)

Answer 50

but thats not one of the answer

Answer 51

lol wait miscalc xD

Answer 52

oh i was about to say XD

Answer 53

27 :D

Answer 54

lol yeah "I WAITED HALF AN HOUR FOR THE WRONG ANSWER???" lol

Answer 55

lol

Answer 56

may i ask u some other questions

Answer 57

this time u can walk me thorught them

Answer 58

Just ask them as new questions.

Answer 59

ok

Answer 60

i can't it won't let me

Answer 61

What's it saying?

Answer 62

it says post but it won't post

Answer 63

Post @jcpd910 and then post the question as a reply

Answer 64

ok

Answer 65

it won't

Answer 66

Post it here.

Answer 67

Evaluate the following expression using the values given.

Find 2x2 - 2z4 + y2 - x2 + z4 if x = -4, y = 3, and z = 2.

Answer 68

i think that some of the number don't mean t multiply i think its an exponent

Answer 69

Sub in the values.
2(-4)^2 - 2(2)^4 + (3)^2 + (4)^2 + (2)^4

Answer 70

ok

Answer 71

-64-316+9+16+8

Answer 72

Not quite, the ^ means to the power of.

Answer 73

For example, 5^4 is 5 * 5 * 5 * 5

Answer 74

3^4 is 3 * 3 * 3 * 3

Answer 75

Try again. :)

Answer 76

ok

Answer 77

i still get the same answer

Answer 78

2(-4)^2 - 2(2)^4 + (3)^2 + (4)^2 + (2)^4
2(16) - 2(16) + 27 + 16 + 16

Answer 79

?

Answer 80

Now solve:
2(16) - 2(16) + 27 + 16 + 16

Answer 81

I simplified it for you.

Answer 82

ok

Answer 83

38

Answer 84

60 i mean

Answer 85

Can you show me your work please?

Answer 86

ok

Answer 87

32 - 32 + 27 +16 + 16 = 59 ?

Answer 88

Correct, see why I need to see your work?

Answer 89

It helps clarify two things: if you actually did the work, and what you got wrong if applicable.

Answer 90

ok

Answer 91

r we going to continue

Answer 92

I AM NOT WAITING ANOTHER 30 MIN

Answer 93

Woah, chill and sure we can do another

Answer 94

ok srrry lol

Answer 95

Gonna post it?

Answer 96

isn't there answer 2

Answer 97

32 - 32 + 27 +16 + 16 = 59
You solved it.
59.

Answer 98

o