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
GrogVix [38]
3 years ago
8

3x+5y=4, 2x-y=-7 solve using substitution

Mathematics
1 answer:
victus00 [196]3 years ago
6 0
 <span>3x+5y=4...(1)
 2x-y=-7...(2)
by(2) : y = 2x+7
subsct in (1) : 
3x +5(2x+7) = 4 
13x = - 31
x = -31/13
y = 2(-31/13)+7 = 29/13</span>
You might be interested in
Which sequence of transformations will map figure H onto figure H′?Two congruent hexagons are shown on a coordinate plane; hexag
frozen [14]

Answer:

Rotation of 180° about the origin, translation of (x + 10, y − 2), and reflection across y = −6

Step-by-step explanation:

8 0
3 years ago
Suppose a friend is having difficulty solving -2(q-5) &gt; -3(q+1). Explain how to solve the inequality, showing all the necessa
IgorC [24]

Firstly, use the distributive property of multiplication (A(B + C) = A×B + A×C) on -2(q - 5) and -3(q + 1): -2q+10>-3q-3

Next, apply the addition property of equality (whatever you add to one side you have to add the same quantity to the other), and add 3q on both sides: q+10>-3

Lastly, apply the subtraction property of equality (whatever you subtract on one side you have to subtract the same amount on the other side), and subtract 10 on both sides. <u>Your final answer will be q>-13</u>

8 0
3 years ago
What is the answer to question b and d
kogti [31]

Answer:

Step-by-step explanation:

a) -3

b) 5

c) -2

d) -6

8 0
3 years ago
Read 2 more answers
Would 1/5 be greater than 1/3 but less than 2/3
makvit [3.9K]
1/5 = 3/15
1/3 = 5/15
2/3 = 10/15
So no :)

Reason why:
You want to find the common denominator between all three fractions, so all fractions are the same proportions. So in this case, if you multiply 5*3 you get 15, making it the common denominator. Then since you multiplied the 5 in 1/5 by 3 to get 15, and you have to multiply the 3 in 1/3 and 2/3 by 5 to get 15, then you multiply the numerator by the same number.

Sorry I am terrible at explaining things. Hope this helped though!
7 0
3 years ago
7907÷24=? help answer and remander
cupoosta [38]

Answer:

329.45833333333

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Other questions:
  • HELP WILL MARK BRAINLIEST!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! 98 POINTS!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
    9·1 answer
  • Which statement is true of 1/2 divided by 2/3?
    12·1 answer
  • The FDA regulates that fresh Albacore tuna fish that is consumed is allowed to contain 0.82 ppm of mercury or less. A laboratory
    6·1 answer
  • SOMEONE ANSWER THIS QUESTION BEFORE I GO CRAZY!!!
    13·2 answers
  • The following statements as true or false.
    13·1 answer
  • Help ASAP !!!!!!
    12·1 answer
  • Renting company Charge 35 per day to rent
    8·1 answer
  • Can you help me? thank youuu&lt;3
    11·1 answer
  • What is the answer to pi squared?
    7·2 answers
  • Tom the painter is painting window frames on a house. He knows that the angle his ladder should make with the ground should be b
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!