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
Lana71 [14]
3 years ago
14

How do solve this problem

Mathematics
1 answer:
Tanzania [10]3 years ago
8 0
Multiply the first equation by 3
21x+15y=-6

Add this to the second equation
21x+15y=-6
-21x-15y=6
0+0=0

True

Final answer: Infinitely Many Solutions (they are coinciding lines)
You might be interested in
What is the volume of the square pyramid shown below?
castortr0y [4]
Option A. 150 m 3 is the correct one
150 \: m {3}
7 0
3 years ago
Calculate the area of a regular octagon if the radius is 10 cm long.
charle [14.2K]

Answer:

Area is A≈282.8 cm  

Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
What’s the length of the leg?
AveGali [126]

Answer:

a = 4 cm

Step-by-step explanation:

Using Pythagoras' identity in the right triangle.

The square on the hypotenuse is equal to the sum of the squares on the other 2 sides, that is

a² + 3² = 5²

a² + 9 = 25 ( subtract 9 from both sides )

a² = 16 ( take the square root of both sides )

a = \sqrt{16} = 4

3 0
3 years ago
Math 7 A Unit 4 lesson 2 Please help quick<br>5/10-3/10<br>1/2+3/4<br>1/6+3/8<br>7/8-5/12
velikii [3]

Answer:

2/10, 1 1/4, 13/24, 11/24

Step-by-step explanation:

1. subtract the fractions

2. add the fractions

3. add the fractions

4. add the fractions

3 0
2 years ago
The digits 1-5 are used for a set of locker codes. Suppose the digits cannot repeat. Find the number of possible two digit and t
Archy [21]
So you would do
5×4×3= 60
and
5×4=20
so, for a 3 digit code there are 60 possibilities and for a 2 digit code there are 20 possibilities.
7 0
3 years ago
Read 2 more answers
Other questions:
  • Make q the subject of the formula 5(q+p)=4+8
    9·1 answer
  • Evaluate 4(2a - b) when a = -1 and b = 5<br><br> A -48<br> B -28<br> C -12<br> D 32
    6·1 answer
  • What is 2/3 in percent form
    13·2 answers
  • How do you compare 7/8 ___ 15/16 ?
    6·2 answers
  • A broken calculator can double any number or permute its digits (but 0 cannot go up front). Can we start with number 1 and obtai
    10·1 answer
  • Solve the inequality.<br> -2(w+4) +9&lt;-11
    14·1 answer
  • What is the slope of the line that passes through the points (1, 7) and (10, 1)?
    15·1 answer
  • Which expression is equivalent to 63 + 27?
    6·1 answer
  • 5 t-shirts cost £38.75. <br> How much do 7 t-shirts cost?
    11·2 answers
  • 1/2a+2/3b=50 when b=30?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!