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
ale4655 [162]
3 years ago
15

Solve 5x+2y=4 x-y=5 (by elimination)I really need help

Mathematics
1 answer:
Ray Of Light [21]3 years ago
6 0
I hope this helps you



x=5+y



5 (5+y)+2y= 4



25+5y+2y=4



7y= -21



y= -3



x=5+y


x=5-3 x= 2
You might be interested in
As punishment for bad behavior during recess, Mrs. Busywork asked her class to multiply 10 by 1/3 five times. John, however, not
xenn [34]
It is the simplest expression which is a multiple of both of the original denominators. Then, the numerators only are added, and the result is divided by the lowest common denominator. Example. Express as a single fraction.
5 0
4 years ago
Read 2 more answers
How do you do this problems?
rewona [7]

x = 6

Step-by-step explanation:

It's based on similarity of triangles

DEF ~ △XYZ

\implies \mathsf{ \frac{DE }{ XY } =  \frac{EF}{YZ} =  \frac{ FD}{ZX}}

The sides should be taken in order, like the triangles start with DE and XY so, we'll proportionate DE and XY and then the next two sides and so on.

I'm using \mathsf{ \frac{DE }{XY } =  \frac{EF}{YZ} }to get the value of x.

[You can use any two fractions out of the three given above. ]

\implies \mathsf{ \frac{10}{x - 1} =  \frac{8}{4}  }

\implies \mathsf{ \frac{10}{x - 1} =  2  }

\implies \mathsf{ 10 =  2 (x - 1) }

\implies \mathsf{ 10 =  2 x - 2 }

\implies \mathsf{ 10  + 2=  2 x  }

\implies \mathsf{ 1 2=  2 x  }

\implies \mathsf{ x = 6 }

Hence, the value of x is 6.

5 0
3 years ago
BRAINLIEST <br> Please answer these
zheka24 [161]

3.14 is used for pi.

6.  r = \sqrt{\frac{A}{\pi } }

14.00

7. d = \frac{c}{\pi }

5.00

8. d = 2 \sqrt{\frac{A}{\pi } }

23.01

9. r = \frac{c}{2\pi }

20.01

10. d\pi = 2 \sqrt{{A}

31\pi

11. r\pi = \frac{c}{2}

22.5\pi

Hope this helps :)

6 0
3 years ago
HELP!!!
Hoochie [10]

Answer:

AT = 8\sqrt{2}

Step-by-step explanation:

Using the sine ratio in the right triangle

and sin45° = \frac{1}{\sqrt{2} }

sin45° = \frac{opposite}{hypotenuse} = \frac{AB}{AT} = \frac{8}{AT}

Multiply both sides by AT

AT × sin45° = 8, that is

AT × \frac{1}{\sqrt{2} } = 8

Multiply both sides by \sqrt{2}

AT = 8\sqrt{2}

3 0
3 years ago
Match each three-dimensional figure to
lara [203]

Answer:

15

Step-by-step explanation:

4 0
3 years ago
Other questions:
  • Make a ten or a hundred to add mentally 1,274 + 3,599
    13·1 answer
  • Please help with area of right triangles!
    13·1 answer
  • Need help with these 3 questions please explain how you do It. Thx!
    15·1 answer
  • Becky is writing a coordinate proof to show that the diagonals of a parallelogram bisect each other. She starts by assigning coo
    7·2 answers
  • Can someone please please pleas help me please
    13·1 answer
  • -5b + 8 &lt; 3<br> What’s the correct answer
    8·1 answer
  • A circle with radius of 2 cm 2cmstart color greenD, 2, space, c, m, end color greenD sits inside a circle with radius of 4 cm 4c
    8·1 answer
  • Can anyone work out number 2 and 4 thanks :)
    9·1 answer
  • Without graphing, tell if the coordinate (-3,-15) is a solution
    15·1 answer
  • Which of the following equations is 2x + 3y = 6 written in slope-intercept form.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!