Question

Use signed numbers to solve.

A helicopter descended 1200 feet, rose 800 feet, and then descended 450 feet.

What was the net gain or loss in altitude?

A.
lost 2450 ft

B.
lost 850 ft

C.
gained 850 ft

D.
gained 2450 ft

Answer 1

A helicopter descended 1200 feet, rose 800 feet, and then descended 450 feet.

descended 1200 feet : -1200
rose 800 feet : +800
descended 450 feet : -450
-----------------------------
Overall : ???

Answer 2

Add them up

Answer 3

-850

Answer 4

yes ! that means overall it has "descended" 850 feet.

Answer 5

which means it has lost a height of 850 feet

Answer 6

if that makes some sense...

Answer 7

thanks

Answer 8

np :)

Answer 9

can u help me with some more

Answer 10

shoot...

Answer 11

Write an equation and then solve the problem.

Vick’s Vitamins had start-up expenses of $85,000 for research and $125,000 for the first year’s inventory. So far, the sales are $45,000. What do the sales have to be for the rest of the year for the company to break even?

A.
$65,000

B.
$130,000

C.
$165,000

D.
$255,000

Answer 12

at breakeven, there will not be any profit or loss

Answer 13

expenses = revenues

Answer 14

85000 + 125000 = 45000+x

Answer 15

solve x

Answer 16

but 85000 + 125000 dose not = 45000

Answer 17

good observation :)
yes they're not equal

Answer 18

but did u miss the "+x" attached to the equation, in the end ?

Answer 19

85000 + 125000 = 45000+x

Answer 20

you need to solve that "x",
such that equation balances

Answer 21

first add left hand side numbers

Answer 22

idk how to do it can u help

Answer 23

85000 + 125000 = 45000+x

210000 = 45000 + x

Answer 24

next subtract 45000 both sides

Answer 25

85000 + 125000 = 45000+x

210000 = 45000 + x

165000 = x

Answer 26

165,000 is the sales they need to make still to breakeven

Answer 27

where u get the 160000

Answer 28

165,000 i meant

Answer 29

did u get my second equaiton ?

Answer 30

85000 + 125000 = 45000+x

210000 = 45000 + x ***********************

165000 = x

Answer 31

^^that one, did u understand how I got 210000 ?

Answer 32

yeah by adding 85000 + 125000

Answer 33

Yes !

Answer 34

To get to third equation,
you need to subtract 45000 both sides

Answer 35

85000 + 125000 = 45000+x

210000 = 45000 + x ***********************
-45000 -45000

Answer 36

u have to add them those -45000 -45000

Answer 37

@ganeshie8 sorry i am giving u a hard time
but i have to do it

Answer 38

yah subtract : 210000 - 45000
wat do u get ?

Answer 39

oh 165000

Answer 40

so the answer is 165000

Answer 41

The first and second year’s sales for a company were $225,000 and $547,000. The expenses for the first year were $186,000. The company had a net profit of $202,000 after two years.

What were the company's expenses for the second year?

A.
$16,000

B.
$384,000

C.
$586,000

D.
$788,000

Answer 42

@ganeshie8 sorry but have one more left

Answer 43

The first and second year’s sales for a company were $225,000 and $547,000. The expenses for the first year were $186,000. The company had a net profit of $202,000 after two years.

What were the company's expenses for the second year?

A.
$16,000

B.
$384,000

C.
$586,000

D.
$788,000

Answer 44

Profits = Sales - Expenses

Answer 45

you knw Profits = 202,000

Answer 46

Can u find out Sales ?

Answer 47

$225,000 and $547,000

Answer 48

yes, add them up.
wat do u get ?

Answer 49

$225,000 + $547,000 + 202,000 -186,000

Answer 50

974000

Answer 51

Nope, add only the sales first

Answer 52

Total Sales = $225,000 + $547,000
= ?

Answer 53

772000 i thought we had to add the profit and sail sorry

Answer 54

yes, next lets say second year expenses were "x",
then total expenses = 186,000 + x

Answer 55

plug these in the equation :

Profit = Sales - Expenses

202,000 = 772000 - 186000 - x

Answer 56

solve x

Answer 57

idk need help plez @ganeshie8

Answer 58

202,000 = 772000 - 186000 - x

202,000 = 586000 - x

Answer 59

I have just subtracted the right hand side terms

Answer 60

202,000 = 586000 - x

next subtract 586000 both sides, you get :

-384,000 = -x

multiply -1 both sides

384,000 = x

Answer 61

thanks