Answer:
a. 10 + 2.50x
b. 60
c. 100
Step-by-step explanation:
a. 10 + 2.50x
b. 10 + 2.50(20)
= 10 + 50
= 60
c. 260 = 10 + 2.50x
250 = 2.50x
250/2.50 = x
x = 100
Answer:
80 hours
Step-by-step explanation:
let d represent doug, let l represent laura
first, set up a system of equations representing the problem:
since doug spent 10 less than twice the hours laura did, and we know that the total amount of hours they spent together is 230:
l=2d+10
d+l=230
then solve:
*first i rearranged the equations so i can solve this system of equations using elimination method*
l-2d=10
l+d=230
*subtract*
3d=240
d=80
so, doug spent 80 hours in the lab
Step-by-step explanation:
(-24)+19
= 19 - 24
= -5 (Ans)
No its not, the equation your showing right now adds up to 68
Step-by-step explanation:
180-89=91(angles on a straight lline)
5x-24=91(Corresponding angles)
5x =91+24
5x =115
<em> x =23 degrees</em>
94+13x-5=180(allied angles)
94+13x-5 =180-94+5
13x =91
<em> x=7</em>
7(x-7)=7x-49
7x-49=126(corresponding angles)
7x =126+49
7x=175
<em> x=25</em>
<em>Hope you got it </em>
<em>If you have any question just ask me</em>
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