Average = Mean
To find the mean, add up the numbers and divide it by how many numbers there are.
So,
![-2.6+1.8+(-3.3)+(-2.7)+2.2=-4.6](https://tex.z-dn.net/?f=-2.6%2B1.8%2B%28-3.3%29%2B%28-2.7%29%2B2.2%3D-4.6)
There are 5 numbers in total.
![-4.6 \div 5=-0.92](https://tex.z-dn.net/?f=-4.6%20%5Cdiv%205%3D-0.92)
To do these types of division, ignore the decimal and add a 0 at the end.
So we can do:
![-460\div5=-92](https://tex.z-dn.net/?f=-460%5Cdiv5%3D-92)
And put back the decimal.
Hope this helps :)
Solve for 1 variable
solve for y in 2nd
y-x=4
add x
y=4+x
su that for y in other
2(4+x)-x=3
8+2x-x=3
8+x=3
minus 8
x=-5
sub back
y=x+4
y=-5+4
y=-1
(x,y)
(-5,-1)
Answer:
.66, 4/5, 84%, .86
Step-by-step explanation:
.66 is already in decimal form.
4/5 converted to decimal form is .8
84% in decimal form is .84
.86 is already in decimal form
Answer:
b. No she will not have enough bracelets for all 32 classmates if she orders 5 more packages of bracelets
Step-by-step explanation:
write out the equation
p=the number of packages she needs to buy
32=5+4p
subtract five from both sides
32-5=5-5+4p
27=4p
dived both side by 4
27/4=4p/4
6.75=p round to 7
Check your answer:
4 x 7 = 28
add the number of bracelets she already has
28 + 5 = 33 bracelets
33>32
So <u>7 packages</u> is the minimum number of packages she needs to buy