7TH GRADE MATH IF YOU HELP ILL GIVE BRANLIEST AND 10 POINT//PROBABILITY
2 answers:
1) 20%
2) Assuming that on the spinner with color, every section has an equal share, then the probability of landing on orange is or 20%. This is because, the orange section is one of the five equal sections, or
or the spinner.
in decimal form is 0.2, to convert to a percent, multiply by 100. Hence one gets, 20%.
3) 40
4) There are 5 sections on the spinner with color, hence 5 possible outcomes when one spins the spinner. On the black and white spinner, there are 8 sections, hence 8 possible outcomes when one spins the spinner. To find the total number of outcomes resulting from the two events, one must multiply the total outcomes from one event by the total outcome of the other event. When one does this, they get that there are 40 possible events.
You might be interested in
Looks like the system is
x + 4y - z = -14
5x + 6y + 3z = 4
-2x + 7y + 2z = -17
or in matrix form,
Cramer's rule says that
where is the solution for i-th variable, and
is a modified version of
with its i-th column replaced by
.
We have 4 determinants to compute. I'll show the work for det(A) using a cofactor expansion along the first row.
The modified matrices and their determinants are
Then by Cramer's rule, the solution to the system is