Question

@nuz93

Answer 1

width=x
length=2x-3
Sum of 3 sides = x + x + 2x-3 = 29
4x - 3 = 29
4x = 32
x = 8
width=8
length=13

Answer 2

let car = x
truck = y
276x+167y = 5961116
69x + 105y = 2578179
solve :P

Answer 3

hum u could multiply the second equation by 4
then eliminiate x

Answer 4

Car= 11191
Truck= 17200

Answer 5

yeah (y)

Answer 6

woo

Answer 7

this question u've already tackled I'm not mistaken :P

Answer 8

Lol hang on let me double check

Answer 9

yeah i remember :P

Answer 10

The numbers are diff lol

Answer 11

I'm trying to find in my notes where I have the equation written

Answer 12

u could just replace the num ;)

Answer 13

I'm looking for how the equation was set up but my notebook is all over the place lol

Answer 14

got it :D
let x=no. of heavy equipmnt op
33-x=labores employed
134x+81(33-x)=4157



replace now ;)

Answer 15

33 heavy and 2 general?

Answer 16

(y)

Answer 17

let d = 10.5 mi the distance she traveled down the Habashabee River
t1 = 1.5 h
t2 = 3.5 h
x represent the rate Ina can row in still water
y represent the rate of the current
since speed = distance/time follows distance = time*speed
going down the river her speed is: x + y
(x+y)*t1 = d
(x+y)1.5 = 10.5
going up the river her speed is: x-y
(x-y)t2 = d
(x-y)3.5 = 10.5


x = 5 mph
y = 2 mph

Answer 18

we did that :P

Answer 19

ok let me find the equation so I can plug it in

Answer 20

let x be smaller num
y be larger num
x+y=71
y-2x=5

Answer 21

could i make it 2x-y=5

Answer 22

x=22
y=49

Answer 23

if twice the smaller number is subtracted from the larger number!
no u can't

Answer 24

am i right? :)

Answer 25

yes (y)
22 and 49

Answer 26

hmm
let x be the first number
y be the second number
x+y=52
y-3x=8

Answer 27

x=11 y=41

Answer 28

(y)

Answer 29

I'm trying to speed it up lol

Answer 30

Assuming t=two...
f=free.....
t+f=13
2t+f=21

Answer 31

chill it's only 22:46 ;)

Answer 32

t=8 f=5

Answer 33

(y)

Answer 34

is that it?

Answer 35

include upto x=-1in the shaded regon

Answer 36

huh

Answer 37

from x=-1 to the right end

Answer 38

-1,3

Answer 39

yeah (y)

Answer 40

thank you

Answer 41

yeah good

Answer 42

and shade on the left?

Answer 43

yeah (y)
u r just checking :D

Answer 44

I am

Answer 45

ok come on how many left?

Answer 46

15 lol

Answer 47

I think I'm back to word problems though

Answer 48

we did that 2day :D
just replace :P

Answer 49

x+y=7
x-y=-3

Answer 50

x=2?

Answer 51

y=5

Answer 52

yup :P

Answer 53

3a+4c=129
2a+3c=92

Answer 54

c=18

Answer 55

a=19

Answer 56

(y)

Answer 57

Speed,Time=Distance
x+y * 3 =630miles
x-y * 3.5 =630miles

equation 1:
3(x+y)=630
3x+3y=630

equation 2:
(3x+3y=630)/3
x+y=210

equation 3:
2[3.5(x-y)]=(630)2
7x-7y=1260

2[3x+3y=630]
x+y=210
(+)7x-7y=1260

14x =2730
x = 195miles per hour

x= 195 miles per hour

195+y=210
y=210-195
y= 15 miles per hour

Answer 58

we did that ;)
4d+6c=7.70
2d+2c=3

Answer 59

sorry I'm posting fast now

Answer 60

5 min 10 prob

Answer 61

I'll post the ans since the equations r the same ok?
288 mph the speed of the plane in still air
48 mph the speed of the wind

Answer 62

thank you

Answer 63

nxt question quiiiiiiiiiiiiick :D

Answer 64

6 going up stream
10 going down