<u><em /></u>Subtracting a negative number really means to add it
Here's addition:
(1) + (1) = 2
(1) + (-1) = 0
(-1) + (-1) = -2
(-1) + (1) = 0
Here's subtraction:
(1) - (1) = (1) + (-1) =0
(1) - (-1) = (1) + (1) = 2
(-1) - (-1) = (-1) + (1) = 0
(-1) - (1) = (-1) + (-1) = -2
Here's your problem specifically:
(5/10) - (-8/10)
(5/10) + (8/10)
*since they have the same denominator, that stays the same, and you only have to add up numerators
(5 + 8)/10
13/10
<u><em>answer is 13/10 . . . it's positive</em></u>
L:w=5:7
l/w=5/7
cross multiply
7l=5w
(7/5)l=w
P=2(L+W)
P=72
72=2(L+W)
divide both sides by 2
36=L+W
W=(7/5)L
36=L+7/5L
36=12/5L
times both sides by 5
180=12L
divide both sides by 12
15=L
W=(7/5)L
W=(7/5)15
W=21
length=15ft
width=21ft
dimeitions are 15 by 21ft
Answer:
£15347.07
Step-by-step explanation:
Given data
Amount=£19064.67
% decrease=19.5%
let us find the value of 19.5%
=19.5/100*19064.67
=0.195*19064.67
=£3717.6
Hence the new Amount after the decrease is
=19064.67-3717.6
=£15347.07
Answer:
c
Step-by-step explanation:
the question gives us c already (the pounds of beans roasted) we know the total should be 280.
we are also given a time period, or a set amount of time in which the beans are roasted at. the coffee shop roasts 280 pounds within 8 hours
because we are told that the <u>rate beans are being roasted at is constant,</u> we know that the amount of beans roasted per hour has to be the same.
so now knowing all of this we know we can evenly divide 280 pounds of coffee by our time limit of 8 hours (280/8) to get the pounds of coffee roasted (280/8 = 35) by each time unit, which in this case <u>t = the number of hours.</u>
so
280 pounds of coffee in total = 35 lbs roasted per hour.
c = 35t
Ok so you need an equation. 188.12 is the total cost he ends up paying. 17.95 is the base fee/y-intercept and the $0.91 for each mile driven is the slope. So, the equation will be like this: (total cost)=(slope)+(base fee) Now let’s plug in the numbers. 188.12=0.91x+17.95. Now we solve for x. (X represents the number of miles driven.
188.12=0.91x+17.95 (first subtract 17.95 from both sides of the equation) (after this you get 170.17=0.91x. (Now divide by 0.91 on both sides)
