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MArishka [77]
3 years ago
11

Solve by elimination: 3y-4x=29 2y+5=4

Mathematics
1 answer:
Vaselesa [24]3 years ago
5 0

The solution is x = -61/8 and y = -1/2.

<u>Step-by-step explanation</u>:

The given equations are -4x + 3y = 29 and 2y + 5 = 4

   <u>Step 1</u> : There is no x term in the second equation.

   <u>Step 2</u> : Solve for y, 2y = 4 -5

                                      y = -1/2

   <u>Step 3</u> : Substitute y = -1/2 in first equation and solve for x.

   <u>Step 4</u> : -4x + 3(-1/2) = 29

                 -4x -(3/2) = 29

                 -8x -3 = 29\times2

                 -8x = 58 + 3

                  x = -61/8

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The formula is
R=I/pt
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4 0
3 years ago
Read 2 more answers
Luke started a weight-loss program. The first week, he lost X pounds. the second week he lost 3/2 pounds less then 3/2 times the
irga5000 [103]

Luke started a weight-loss program.

The first week, he lost X pounds.

the second week he lost 3/2 pounds less then 3/2 times the pounds he lost the first week. so, he lost 3/2 x - 3/2

The third week, he lost 1 more pound than 3/4 of the pounds he lost the first week. so, he lost 3/4 x + 1

So, over 3 weeks he lost :

x + (3/2 x - 3/2) + (3/4 x + 1) = 13/4 x - 1/2

=========================================================

Liam started the program when Luke did.

The first week, he lost 1 pound less than 3/2 times the pounds luke lost the first week. so, he lost (3/2 x - 1)

The second week, he lost 4 pounds less than 5/2 times the pounds luke lost the first week. so ,he lost (5/2 x - 4)

The third week, he lost 1/2 more than 5/4 times the pounds luke lost the first week. so, he lost, ( 5/4 x + 1/2)

The expression for Liam's weight loss over the three weeks is =

= (3/2 x - 1) + (5/2 x - 4) + ( 5/4 x + 1/2) = 21/4 x - 9/2

=============================================================

Assuming they both lost the same number of pounds over the three weeks

So, equating the number of pounds lost by each one of them

so,

13/4 x - 1/2 = 21/4 x - 9/2

solve for x

13/4 x - 21/4 x = -9/2 + 1/2

-2x = -4

divide both sides by -2

so,

x = -4/-2 = 2

so,

The number of pounds luke lost in the fist week is 2 pounds

=============================================================

4. The number of pounds luke and liam each lost over the three weeks is

= 13/4 * 2 - 1/2 = 6 pounds

7 0
1 year ago
Express 7. 66 repeating as a ratio of two integers.
OverLord2011 [107]
Method A: 7.6666.... = 7 + 0.6666... = 7 + 2/3 = 21/3 + 2/3 = 23/3

Method B: 10(7.666...) - 1(7.666...) = 76.666... - 7.666... = 69.000...
(10 - 1)(7.666...) = 69
7.666... = 69/9 = 23/3
5 0
3 years ago
HELP HELP!!!! YOU WILL GET BRAINLIEST!! PLEASE!!!
LiRa [457]
Um idk sorry lol that’s way to hard for me
5 0
3 years ago
Help me please !!!!
fiasKO [112]

Answer:

BC = 10

Step-by-step explanation:

BC = BD - CD

BC = 14 - 4

BC = 10

6 0
3 years ago
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