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
andreyandreev [35.5K]
3 years ago
13

Solve the system of equations algebraically.

Mathematics
1 answer:
Romashka [77]3 years ago
8 0
A should be the right answer because 4*5/4=5 + 5*2=10 and 5+10=15.
You might be interested in
If a triangle has side 6 feet and 9 feet and perimeter is 23 feet , how long is the third side ?
tiny-mole [99]

The perimeter of a triangle is found by adding all the three sides.


Let's call the third side "x"

So,

6+9+x = 23

15+x = 23

x = 8

8 0
3 years ago
Read 2 more answers
Sonia is standing 20 centimeters from the door.brice is standing 20 meters from the door.who is standing further from the door
Sever21 [200]
Hello!

Brice is standing further away from the door, because 20 metres are greater than 20 centimetres.

A lot greater, actually, because 20 metres = 2,000 centimetres.
6 0
3 years ago
What is the prime factorization of 121?
Diano4ka-milaya [45]
121|11
11|11
1

121=11^2
3 0
3 years ago
What is the answer to the solution 2x-y=5<br><br> A) 2,-1<br> B) 3,-1<br> C) 1,2<br> D) 7
lapo4ka [179]
I believe it's a , not sure though
6 0
3 years ago
Read 2 more answers
A robot moving forward at a constant speed takes 2.5 hours to travel 1 kilometer. Moving forward at this same constant speed, it
makvit [3.9K]

Answer:

The length of the hallway is 10 m.

Step-by-step explanation:

Given:

Time taken to cover 1 km = 2.5 hours

Distance covered in 2.5 hours = 1 km

Therefore, speed of robot = \frac{\textrm{Distance}}{\textrm{TIme}}=\frac{1}{2.5}=0.4\ km/h

Now, speed is constant.

Now, time taken to cover the length of hallway = 90 s

Speed of the robot = 0.4 km/h

Converting 0.4 km/h to m/s, we multiply by the factor \frac{5}{18}. This gives,

0.4\times \frac{5}{18}=\frac{1}{9}\ m/s

Now, distance of the hallway is equal to the product of speed and time. So,

Distance of hallway = Speed \times Time

Distance of hallway = \frac{1}{9}\times 90=\frac{90}{9}=10\ m

Therefore, the length of the hallway is 10 m.

5 0
3 years ago
Other questions:
  • Femi drove 290 miles from his college to home and used 23.2 gallons of gasoline. His sister, Kehinde, drove 225 miles from her c
    15·2 answers
  • ( Multiple choice) In the game of miniature golf, the ball bounces off the wall at the same angle it hit the wall. (This is the
    11·2 answers
  • Solve the following equation, and check your solution. Be sure to show all work.
    6·2 answers
  • A family buys groceries for $149.98,
    10·1 answer
  • Plz help I’ll mark you
    5·1 answer
  • HELP! Write the equation of the circle graphed below.
    11·1 answer
  • Write the equation of a line with a slope of O through the point (3, -1).
    13·1 answer
  • Evaluate the expression 2b ^3+5 when b=3
    14·1 answer
  • You have a bag of 63 candies you want to give to your 9 friends. The company that makes the candies guarantees that exactly 9 of
    7·1 answer
  • Can someone help?????
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!