2 years ago

Solve the equations 7x+9y=27 and 4x+5y=13 by combining the equations

1 answer:

7 0

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Reika [66]

Answer:

$m\angle ABC=90^o$

Step-by-step explanation:

see the attached figure to better understand the problem

we know that

$m\angle ABC=m\angle ABD+m\angle DBC$ ----> by angle addition postulate

substitute the given values

$m\angle ABC=35^o+55^o=90^o$

5 0

2 years ago

son4ous [18]

Answer:

23 is the answer of the question

3 0

2 years ago

german

Answer:

Step-by-step explanation:

18x-2

3 0

2 years ago

vitfil [10]

D. Slide Up 4

the x is for left and right, the y in for up and down. positive means up or right, negative means down or left.

4 0

2 years ago

Ede4ka [16]

Reflecting a function across the x-axis means to change the sign of the function itself: you're mapping $f(x)\mapsto -f(x)$

So, if you have a x/y values table, you simply have to change sign to all the values in the y column.

5 0

2 years ago