Use a portion of the circumference: pi x 2 x r x angle at centre =8xpix72/360 =8pi/5
Positive × Positive = Positive
3 × 2 = 6
m × n = mn
Positive × Negative = Negative
8 × -4 = -32
m × -n = -mn
Negative × Negative = Positive
-5 × -4 = 20
-m × -n = mn
(-x) × (-x) = x²
The same rules apply for division as multiplication.
Answer:
D
Step-by-step explanation:
The line-of best fit is where a line would be drawn if there was one. The line goes through the majority of the dots and doesn't touch the outliers. Also the line is strait.
Answer:
81pi
Step-by-step explanation:
pi3^2=9pi
9pi * 9 = 81pi
Answer:
9.6 mL
Step-by-step explanation:
If x is mL of chemical X, and y is mL of chemical Y, then:
x + y = 16
0.05x + 0.09y = 0.074(16)
Solve the system of equations using substitution.
0.05(16 − y) + 0.09y = 0.074(16)
0.8 − 0.05y + 0.09y = 1.184
0.04y = 0.384
y = 9.6
You need 9.6 mL of Y.