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
strojnjashka [21]
3 years ago
13

PLEASE HELP ME SEE IF MY ANSWERS ARE CORRECT!!!!!!!

Mathematics
1 answer:
Lena [83]3 years ago
8 0
So first one
'how many solutions does 2x-y=-5 and 2x+y=5 have?'
add and get
2x-y-5
plus
2x+y=5

equals
2x+2x+y-y=5-5
4x=0
x=0 always
solve for y
4(0)+y=5
y=5
the solution is (0,5)
only <u>ONE </u>solution






one way is to subsitute
just remember that it is in (x,y) form so
the pont (1,2) means that 1 solution is x=1 and y=2 so subsitute and find that
the first one is the answer you are correct





just look at the graph
the solution is the intersection
it seems to be at a point that is 3 units to the right and -6 units up (6 units down)
so the solution is (3,-6)
yo are corect








subsitution
y=y
therefor
the answe ris (-4,-14) if you did the math correctly











#8 is correct

# 9 is correct




# 10 the answe ris bananas=0.40 pears=0.60


the  last one you got it wrong, remember to check your answer to the graph for commonsense
then answer is (-2,5) and (1,2)
You might be interested in
an electronics store sells large flat screen tvs for 1699 last month the store sold 8 of this tvs anout how much did the tvs sel
rusak2 [61]
The answer is $212.37 for each large flatscreen tv
4 0
3 years ago
BRAINLIEST WILL I GIVE HURRY
stepladder [879]

Answer:

{10,8}

Step-by-step explanation:

-3x + 4y = -62

4x + 5y = 0

let's eliminate the x

-3x + 4y = -62 | x -4 |

4x + 5y = 0 | x 3 |

12x - 16y = 248

12x + 15y = 0

-------------------- -

-31y = 248

y = 248/(-31) = 8

since you must do this proble with elimination, we cant use subtitution. so we repeat the way once more to find x (eliminate y)

-3x + 4y = -62 | x 5 |

4x + 5y = 0 | x 4 |

-15x + 20y = -310

16x + 20y = 0

-------------------- -

-31x = -310

x = -310/-31 = 10

4 0
3 years ago
Write to show how you make a ten.then add
storchak [24]
You can write it like this 5+5
3 0
3 years ago
What adds to -288 and adds to -41?
inna [77]
-329 hood this helps
6 0
2 years ago
Read 2 more answers
Tommy has a pet monkey. Every day, his monkey eats 4 apples in the morning. The monkey also eats two bananas for every banana th
natta225 [31]
Y=4+2x
Hope this helps!
Vote me brainliest!
6 0
3 years ago
Read 2 more answers
Other questions:
  • House 1 2 3 4 5 6 7 8
    7·1 answer
  • Divide 794.1 by 7.61. Round off your answer to two decimal places. A. 104.35 B. 786.49 C. 95.83 D. 1,043.50
    14·2 answers
  • Have no clue how to find the slope or y off pic
    14·1 answer
  • A coin is flipped four times, and the result is recorded for each flip. How many possible outcomes are there for the experiment?
    7·1 answer
  • Guys, please help me out. Thank you.
    10·2 answers
  • If 2/3n= -12 what is the value of n=​
    10·2 answers
  • Sarah used a probability simulator to roll a 12-sided number cube 100 times. Her results are shown in the table below:
    12·2 answers
  • If the area of a circle is 58 square feet, find the circumference. A. 42.5 ft. B. 4.25 ft. C. 22.35 ft. D. 26.99 ft.
    11·2 answers
  • What is the surface area of the pyramid in square inches?
    11·1 answer
  • WOULD VERY MUCH APPRECIATE THIS PLEASE HELP​
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!