#7 is 1/25 and 6 is 3/87
Step-by-step explanation:
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y = - x - 1
the equation of a line in slope-intercept form is
y = mx + c ( m is the slope and c the y-intercept )
rearrange - 7x + 5y = 12 into this form
add 7x to both sides
5y = 7x + 12 ( divide all terms by 5 )
y = x + ← in slope- intercept form
with slope m =
given a line with slope m then the slope of a line perpendicular to it is
perpendicular slope = - = -
The partial equation of the perpendicular line is
y = - x + c
to find c substitute (- 7, 4 ) into the partial equation
4 = 5 + c ⇒ c = 4 - 5 = - 1
y = - x - 1 ← in slope- intercept form
ΔADC and ΔCDB are similar. Therefore the sides are in proportion:
Substitute:
<em>cross multiply</em>
<em>divide both sides by 4</em>
firts lets see how many dollars she has
192 divided by 4 is 48 so she currently has 48 dollars.
and she puts in 2 quarters daily
so lets see how much she need to earn
75 - 48 is 27
lets see how many quarters she need to have 27 dollars 27 x 4 is 180
now lets divide 180 by two because shes giving two everyday. 180 divided by 2 is 54 so if she kept adding two quarters everyday it would take her 54 days to get the rest of the money she need to by and iPod.
i dont know if this helped or not but i solved it
Answer:
As I divided in the picture,
Total area = area of triangle + area of 2 rectangles
= base x height/2 + length1 x width1 + length2 x width2
= 15 x (15 + 3 + 5 - 3)/2 + 3 x 4 + 8 x (3 + 5)
= 226
Hope this helps!
:)