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
tester [92]
3 years ago
8

— 4х + 7y = 20 у = 3х + 15

Mathematics
1 answer:
Angelina_Jolie [31]3 years ago
6 0

Answer:

x=-5

Step-by-step explanation:

-4x+7(3x+15)=20\\ -4x+21x+105=20\\ 17x+105=20\\ 17x=20-105\\ 17x=-85\\ x=-5

You might be interested in
Please help .............​
Brums [2.3K]

Answer: It is a quicker way to solve the problem.

3 0
3 years ago
The polynomial function of least degree with a leading coefficient of 1 is:
Lelu [443]
A) x=-2,1,3(x+2)(x-1)(x-3)=0(x+2)(x2-4x+3)=0x3-4x2+3x+2x2-8x+6=0x3-2x2-5x+6=0 b) x=-3,3,i and also -i(x-3)(x+3)(x-i)(x+i)=0(x2-9)(x2-i2)=0(x2-9)(x2+1)=0x4-9x2+x2-9=0x4-8x2-9=0 c) x=-2,-2,2-3i (also 2+3i), 4+√2 (also 4-√2)(x+2)(x+2)(x-[2-3i])(x-[2+3i])(x-[4+√2])(x-[4-√2])(x2+4x+4)(x2-[2-3i]x-[2+3i]x+4-9i2)(x2-[4+√2]x-[4-√2]x+16-2)(x2+4x+4)(x2-4x+13)(x2-8x+14)you now multiply all three trinomials together
3 0
3 years ago
Read 2 more answers
Which Set of Ordered Pairs Doesn't Represent A Function DUE TONIGHT WILL GIVE<br> BRAINLIEST
vlada-n [284]

Answer:

B

Step-by-step explanation:

In the first two coordinates, they share an x-value: 5

8 0
2 years ago
Kerry has 77 dolls. Perry has e more dolls than Kerry. Write the expression that shows how
Rus_ich [418]

Answer: 77+e=Perry

Step-by-step explanation:

if you pulg in any number that is exacly what you will do to the number.

7 0
3 years ago
What is the slope of a line perpendicular to the line whose equation is 2x+8y -64 Fully reduce your answer.
Lelechka [254]

Answer: I am pretty sure it is y=-1/4x-8. Hope this helps!

Step-by-step explanation:subtract the 2x from both sides which gives you 8y=-2x-64. Then you want to divide both sides by 8 to get y=-1/4x-8

6 0
3 years ago
Other questions:
  • What number is the opposite of 165
    8·2 answers
  • True or false? "If two angles form a linear pair, they must be supplementary?"
    11·2 answers
  • How to use the distributive Property fr 64 -+ 24
    6·1 answer
  • Which equation describes the line parallel to y=7x+15 that contains P(9,-6)?
    13·1 answer
  • 51 is approximately equal to<br> A<br> 7<br> B<br> 5.1<br> с<br> 6<br> D<br> 60
    5·1 answer
  • Which expressions are equivalent to 1/3+Bd+5/7?<br> Check all that apply
    8·1 answer
  • Drag the tiles to the boxes to form correct pairs.
    10·1 answer
  • Find the values of x and y
    8·2 answers
  • A company claims that their new bottle holds 25% more laundry soap. If their original container help 48 fluid ounces of soap, ho
    14·1 answer
  • Ƒ(1) = −16 [ƒ(1) <br> f(n) = -29 - f(n-1) <br>what is f(2)=​
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!