1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Yakvenalex [24]
3 years ago
10

Can anyone pls tell me when do we cross multiply and when do we multiply 10 * 75 im really confused

Mathematics
1 answer:
Westkost [7]3 years ago
4 0

You don't multiply liters of gasoline by distance.

They are<u> directly proportional </u>- the more gasoline you have the longer is the dictance you can go.

So it's <u>cross multiply</u>.

Another examlpe:

you are paid by hour for your work. The more hours you have worked, the more you are paid:

hours      payment

2 h            $36

5 h             x    

x=\dfrac{5\cdot36}2=90

You would multiply 10•70 if they were inversely poportional values

For example:

1. speed and time of ride by given distance {the greater the speed the less time you need for a ride}

speed          time

10 m/s          75 s

 8 m/s           x

x=\dfrac{10\cdot75}{8}=93.75\,s

2. price and kolos of apples - the higher the pice the less of kilos you can buy by given cash

price          kilos of apples

$2                8

$4                x

x=\dfrac{2\cdot8}{4}=4\,kg

You might be interested in
There are 35 students in a college algebra class. If two fifths of the students are female, how many students are in the class?
sergejj [24]

Answer:

35.

Step-by-step explanation:

You mentioned that there are 35 students in a college algebra class.

8 0
3 years ago
A ladder is leaning against the house. The base of the ladder is 9 feet from the base of the house. The ladder is 20 feet long.
zvonat [6]

Answer:

17.86057

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Maria is standing next to a tree. The tree cast a shadow that is 5.4 ft long. The angle formed from the sun hitting the tree and
Firlakuza [10]
Well if you Multiply 5.4 times 5 yo get 27, so your answer should be 27in
7 0
3 years ago
Read 2 more answers
I am thinking of a number x. what algebraic expression represents 7 less than three times this number?
sammy [17]

Step-by-step explanation:

Answer: 3x-7

Explanation: x times 3

(3x)

subtracted by 7

(3x-7)

Is this what you are looking for?

8 0
3 years ago
PLEASE HELP FAST
Minchanka [31]

Answer:

-3165

Step-by-step explanation:

put 3 in for x than you just multiply from there than once you multiplied add and subtract than you have the answer

6 0
2 years ago
Other questions:
  • A king wanted to reward his adviser,a wise man of the kingdom.so he asked the wiseman to name his own reward.the wiseman thanked
    12·1 answer
  • Sue has 18 sweets Tony has 18 sweets Sue gives tony x sweets Sue then eats 5 of her sweets Tony then eats half of his sweets Wri
    13·1 answer
  • 5. A markup of 30% on cost is equivalent to a 41% markup on selling price,<br> True<br> False
    14·1 answer
  • Calculate the area of triangle ABC given A(1, 1), B(7, 1), and C(4, 6).
    14·1 answer
  • There was a girl half my age when i was 12, now i am 64 how old is she?
    11·1 answer
  • solve for a and B. A. a=400/21, b = 580/21 B. a=400/21, b=20/21. C a=580/21, b=20/21. D a=20/21, b=580/21
    12·1 answer
  • (64x44)/11x2^7<br> please reply it is exponents question
    5·1 answer
  • Help please will mark brainliest!!!
    9·1 answer
  • Multiply.
    14·1 answer
  • Find The Distance Between4.5 And -1.4. ( i Need A Answer Right Now Pleaseeeeee!!!!!!
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!