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Nikitich [7]
3 years ago
13

Solve the system using elimination. | 3x – 5y = 7 5x - 2y =-1

Mathematics
2 answers:
Licemer1 [7]3 years ago
6 0

Answer:

(-1, -2)

Step-by-step explanation:

multiply the top equation by 5

multiply the bottom equation by 3

15x - 25y = 35

15x - 6y = -3

subtract these two - x values cancel

-25 y = 35

6 y  = 3

-19y = 38

y = -2

plug this back in to get x

15x + 12 = -3

15x = -15

x = -1

stich3 [128]3 years ago
3 0

Answer:

yea girl i need to know dat answer too cuz my teacher thank im Houdini

Step-by-step explanation:

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What is 8.723 in word form
Annette [7]

Eight point sevenhundreth twenty-three thousandths

6 0
3 years ago
Read 2 more answers
5. Mississippi and Georgia have a total of 21 electoral votes. Mississippi has 6 electoral votes. Use mental math or the guess,
MrRa [10]

Answer:  g = 15 . Georgia has 15 electoral votes.

Step-by-step explanation:

Mental math:  How many do I need to make up the difference?

counting by 5s:  5, 10 15, 20.  

6 is one more than 5.

From 5, three more 5's gets us close to 20.  It works.

6 + 15 = 21

8 0
3 years ago
Suppose that z=6^500. Express the following in terms of z.
Studentka2010 [4]

Answer:

1. z^2

2. 14z

Step-by-step explanation:

  • We know that (a^m)^n = a^(mn) = (a^n) ^m

We also know that (a^m)(a^n) = a^(m+n)

  1. 36 can be written as 6^2 and here 36^(500) can be written as (6^2)^500 which also can be written as (6^500)^2 and as already it is mentioned that 6^500 as z we can write the above as <u>z^2</u>

2. 8 x 6^500 = 8z

And we can also write 6^(501) as 6^(500+1) which is equivalent to 6(6^500) which is 6z.

From the above we can make sure that the question is the sum of the above which is 8z + 6z = <u>14z</u><u>.</u>

7 0
3 years ago
7
poizon [28]

Answer:

4:3

Step-by-step explanation:

24/8=3     there are 3 blue beads to __ purple beads

32/8=4     there are __ blue beads to 4 purple beads

there are 3 blue beads to 4 purple beads

3 0
3 years ago
Find the value c that completes the square for x^2-8x+c
Blababa [14]

Answer: 16

Step-by-step explanation:

x^2-8x+c

Let's complete the square.

c=(\frac{b}{2})^2

c=(\frac{-8}{2})^2

c=(-4)^2\\ c=16

7 0
3 years ago
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