Answer:
16 feet wide
Step-by-step explanation:
Use the proportion
1 in is to 8 feet as 2 inches is to 'x' feet.
1/8 = 2/x
now solve by cross multiplying
x = 16 feet
First, you need your slope. this can be found by the slope formula: m = (y2 - y1)/(x2 - x1)
(3, -4) and (-4, 4)
(x1, y1) and (x2, y2)
m = (4 - -4)/(-4 - 3)
m = (8)/(-7)
so your slope is -8/7
now, to find a line through the given points, the only piece of information you're missing is your y-intercept. you just have to pick one point and plug it into slope-intercept form: y = mx + b, then solve for b
(-4) = (-8/7)(3) + b
-4 = -24/7 + b
-4/7 = b
so plug all of it into y = mx + b:
y = (-8/7)x - 4/7
Answer:
she has 3 quarters
Step-by-step explanation:
let's call the amount of dimes D
let's call the amount of quarters Q
you know that she has 11 coins in total,
so D + Q = 11.
you also know that each dime is worth 10 cents.
and each quarter is worth 25 cents.
so 10d + 25q = 155
this is a system of equations. solve by substitution:
d = 11 - q
10d + 25q = 155
10(11 - q) + 25q = 155
110 - 10q + 25q = 155
15q + 110 = 155
15q = 45
q = 45/15
q = 3
Answer:
b
Step-by-step explanation:
it bbbbbbbbbbbbbbb yeah b or d
I believe the answer is a. 40.