Answer:
Final alloy
- weighs grams
- contains grams of cooper
- percent of cooper in alloy is
Step-by-step explanation:
Suppose that a certain alloy is made by mixing 90 grams of an alloy containing 50% of copper with 70 grams of an alloy containing 35% copper.
50% alloy contains
grams of cooper
35% alloy contains
grams of cooper
Final alloy
- weight grams
- contains cooper grams
- percent of cooper in alloy
Answer:
here, the both triangles are similar, so
by solving , x = 8
Step-by-step explanation:
see full explanation in attachment.
i hope it helped you ...
have a nice day...
y=-x
slope for perp line = 1
2y=-x+6
y=-1/2x +3
slope for perp line = 2
15.
i don’t wanna do all sorry it’s a lot of work so i’ll tell u how to do it instead. first write it in slope intercept form which is
y-y1=m(x-x1)
it’s parallel which means it shares the same slope. if it’s perpendicular it would be opposite reciprocals so for -3/2 the perp slope would be 2/3.
the line is
y+1=3/4(x-4)
we distribute the 3/4 so it’s now
y+1=3/4x-3
then we subtract the 1
y=3/4x-4 is the equation boom done
A) is ok; its slope is the neg. reciprocal of the given slope 4, as is required for
perpendicular lines.
B) not feasible; its slope is +1/4, not the negative reciprocal of 4 (-1/4).
C) OK
D) OK (slope is -1/4)