2 years ago

(08.03)

Mathematics

1 answer:

VMariaS [17]2 years ago

8 0

Answer:

rearrange them properly to get

x-y=7

-3x+y=12

( by elimination method)

x-y = 7

-3x+y=

(x+ –3x) + (–y+y) = (7+12)

-2x+0= 19

x= -9.5

from eqn(i)

x-y=7

-9.5 - y=7

-y=16.5

y= -16.5

You might be interested in

What is 26.5 rounded to the nearest hundreds

scZoUnD [109]

5 rounds up 6 rounds up 2 stays the same what is the answer?

7 0

2 years ago

there were 16 teams at a gymnastics meet. each team had 12 members. how many gymnastics participated in the meet.

prisoha [69]

192 gymnastics members

6 0

2 years ago

Read 2 more answers

What is the first step to solve this equation: 11 - 3i = 44

Alex17521 [72]

Answer:

11 - 3i = 44 (move 11 to the right side and add minus)

-3i = 44-11

-3i = 33 (dive it by -3)

i = -11

7 0

2 years ago

The coordinate plane shows the location of the houses of some of Kendra's friends.

n200080 [17]

What- I don’t get it

5 0

2 years ago

YS is the perpendicular bisector of XYZ and YS is a shared side of XYS and ZYS. which of the following must be congrent in order

german

Answer:

The triangles SYX and SYZ are congrient so by CPCTC $XY\cong YZ$ , $XS\cong ZS$ and $\angle X\cong \angle Z$ .

Step-by-step explanation:

Given information: YS is the perpendicular bisector of XYZ.

In triangle YXS and triangle YSZ,

$\angle SYX=\angle SYZ$ (YS is the perpendicular bisector of XYZ)

$YS=YS$ (Common side, Reflexive property)

$\angle YSX=\angle YSZ=90^{\circ}$ (YS is the perpendicular bisector of XYZ)

By ASA postulate,

$\triangle SYX\cong \angle SYZ$

The corresponding parts of congruent triangles are congruent. so,

$XY\cong YZ$

$XS\cong ZS$

$\angle X\cong \angle Z$

6 0

2 years ago