Answer: b) 384 sq. in.
Step-by-step explanation:
Surface area of cube = 6a^2
= 6 (8)^2
= 6 x 64
= 384 sq. in.
Answer:
252
Step-by-step explanation:
Types of main courses available = 9
Types of drinks offered = 7
Types of deserts = 4
Number of different meals consisting of a main course, a drink and a desert offered
Using the combination rule :
9C1 * 7C1 * 4C1
nCr = n! ÷ (n-r)!r!
So using calculator we obtain :
9 * 7 * 4 = 252
Answer:
n = 6
Step-by-step explanation:
Represent the unknown number by n. Then 8 - n/3 = 6.
Consolidate the constants on the left side: 2 - n/3 = 0, or n/3 = 2.
Multiplying both sides by 3 results in: n = 6
1) x = - 4 and y = 8
answer is d. last choice
2) x = 16 y =20
answer is d. last choice
3) x - 6y = -24
so -x + 6y = 24
answer is B. second choice
4) 4.75k + 2.25p = 22
answer is a. first choice
5) last graph.
answer is D.
Adding a negative is the same as subtracting a positive,
So,
5 + (-7.5) = 5 - 7.5
which is equal to,
-2.5
You can also graph this on a number line
