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Rom4ik [11]
3 years ago
10

Algebra 1 system of equations -10x − 7y = -12x = 4

Mathematics
2 answers:
leonid [27]3 years ago
7 0

=  >  \:  - 10x - 7y =  - 12 \\  =  >  \:  - 10(4) - 7y =  - 12 \\  =  >  \:  - 40 - 7y =  - 12 \\  =  >  \:  - 7y =  - 12 + 40 \\  =  >  \:  - 7y = 28 \\  =  > y =   -  \frac{28}{7}  \\  =  >  \: y =  - 4
Hope this helps!
ira [324]3 years ago
5 0

I'm not sure about this but this is what I got

X= -2/11, 7/22

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I really need help <br> it’s very hard
barxatty [35]

Answer:

The angle ZLK has a value of 75 degrees.

Step-by-step explanation:

We can calculate this as:

m\angle MLZ+m\angle ZLK=m\angle MLK\\\\(x+66)+(x+86)=130\\\\2x+152=130\\\\2x=130-152\\\\x=-22/2=-11\\\\\\m\angle ZLK=x+86=-11+86=75

We replace the angles values in the equation, as both angles that are formed with Z (MLZ and ZLK), when added, gives as the angle MLK. This allows us to calculate x. The value for x is -11.

Then, with the value for x we can calculate any of both angles.

6 0
3 years ago
The dimensions (width and length) of room1 have been read into two variables: width1 and length1. the dimensions of room2 have b
Reika [66]
Hello : 
<span>a single expression  is : A = xy +zk
x : </span> width1       y : <span>length1
z : </span>width2        k : <span>length2
A : </span><span>the total area of the two rooms
note : 
A1 = xy  ........</span>area of the room 1<span>
A2 = zk   </span>.......area of the room 2
3 0
2 years ago
Add or subtract. Remember to line up the decimal points 53.199-27.61
Oksi-84 [34.3K]
The answer is 25.589
3 0
2 years ago
PLEASE HELP ME
pav-90 [236]
Converse I think but I’m not sure
5 0
3 years ago
Read 2 more answers
One of the diagonals of a rhombus is 15 cm long. if the rhombus has an area of 60 cm², find the length of the other diagonal.​
horsena [70]

Answer:

8.5

Step-by-step explanation:

area of a rhomus = (1/2)(product of its diagonals)

let the other diagonal be a

(1/2)(15a) = 60

15a= 120

a = 8

So let's find the hypotenuse of one of the right-angled triangles formed by the intersection of its diagonals

base = 4, height = 7.5

if h is the hypotenuse,

h^2 = 4^2 + 7.5^2

h = 8.5

3 0
2 years ago
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