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
vovikov84 [41]
3 years ago
9

7.Solve the following system of equations:

Mathematics
1 answer:
Nadusha1986 [10]3 years ago
5 0
The answer whould be c or b but I can be a it’s o o o I know it is A
You might be interested in
last week shiras fruit stand sold 1 3/4 boxes of peaches down the road tommys fruit stand sold 2 1/2 times as many boxes of peac
Sedaia [141]
The answer is 4 3/8 boxes because 1 3/4 x 2 1/2 = 4 3/8.
6 0
3 years ago
PLEASE HELP!!!!!!!!!!!!!!!!!!!!!!!!
Kamila [148]

Answer:

ok imma be honest i dont have a clue jk

Step-by-step explanation:

use a calculator

7 0
2 years ago
The speed of the boat going with a current is 20 mph. When the boat goes against the current, the speed is 16 mph. Find the spee
adoni [48]

Answer:

The speed of the boat in still water is 18 mph.

The speed of the current is 2 mph

Step-by-step explanation:

Let x represent the speed of the boat in still water.

Let y represent the speed of the current.

When the boat goes against the current, the speed is 16 mph. Assuming it traveled against the current while going upstream, its total speed would be (x - y) mph. It means that

x - y = 16  (equation 1)

Going downstream, the boat averages 20 mph. Assuming it traveled with the current, its total speed would be (x + y) mph. It means that

x + y = 20  (equation 2)

Adding both equations, it becomes

2x = 36

x = 36/2

x = 18 mph

Substituting x = 18 into equation 1, it becomes

18 - y = 16

y = 18 - 16

y = 2 mph

4 0
2 years ago
The sum of three prime numbers (other than two) is always odd.
grandymaker [24]

Step-by-step explanation:

The statement in the above question is True.

Sum of three prime numbers (other than  two)  is always odd.

Going by Christian Goldbach number theory ,

  • Goldbach stated that every odd whole number greater than 5 can be written as sum of three prime numbers .  

 Lets take an example,

  • 3 + 3 + 5 = 11
  • 3 + 5 + 5 = 13
  • 5 + 5 + 7 = 17

Later on in 2013  the Mathematician <u>Harald Helfgott</u> proved this theory true for all odd numbers greater than five.

6 0
3 years ago
A faucet in a large tank can fill the tank in 12 hours. However, there is a hose in the tank which would be able to empty the ta
Kruka [31]
It would take the faucet 18 hours to fill the tank because 18/12=1.5.  That means it will be 1.5 times slower to fill the tank up with the hose on.  1.5*12=18.
7 0
3 years ago
Other questions:
  • What is the greatest common factor of 8m^{2}8m
    10·1 answer
  • ASAP PLEASE ......................
    7·1 answer
  • Sahil's brother is three years old how many weeks old is his brother?
    7·1 answer
  • A table is 4 ft high. A model of the table is 6 in. high. What is the ratio of the height of the actual table to the height of t
    13·2 answers
  • There's a string of red and blue lights strung around a window the red lights blink every three seconds and the blue lights blin
    9·2 answers
  • Which equation is equivalent to 4x + y=12? A.y=-4x-32 B.y=-4x+12 c.y=4x+12 D.y=4x-3
    8·2 answers
  • Simplify 35.36 over 17
    6·1 answer
  • Is – 3 a factor of 66?
    12·1 answer
  • Inscribed angles math lib <br> Need help with number 2 , 3 , and 4 thank you!!!
    14·2 answers
  • Here are the ages (in years) of 10 professors at a college. 44,38,45,34,28,56,54,28,61,48 what percentage is less than 46
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!