Step-by-step explanation:
0.4(5×-15+2.5×+7.5)use 2.5 to multiply the inner bracket
use 0.4 to multiply the equation in the bracket
2x-6+1+3
2×-5+3
2×-2
since there is no" equal to "sign this is the final answer
Using the slope formula, we know that the slope is -2/4
Hello!
The equation that models the money Tara owes is 1250= 80x.
I hope it helps!
There are 10 seniors in the class, from which 4 should be chosen by the teacher. The order of the chosen students does not matter. This means that we speak of combinations. THe equation for calculating the number of possible combinations is:
C=N!/R!(N-R), where N is the total number of objects and R is the number of objects we select from the N
In our case, N=10, R=4.
C= 10!/4!*6!=10*9*8*7*6!/6!*4*3*2*1=<span>10*9*8*7/24=5040/24=210
There are 210 different ways for the teacher to choose 4 seniors in no particular order.</span>
The factors of 40 from that list are 4, 8. and 80. A factor needs to be able to be divided by 40.
