Answer:
Blank 1: 1 Blank 2: 8 Blank 3: 72
Step-by-step explanation:
What it is basically saying is that 9*8 is equal to 10*8 - 1*8 [Blank 1]. 10 times any number is a friendly number, it all ends with a 0. The question is saying that it is easier to think of a friendly number and subtracting from that. 10 eights - 9 eights is equal to 1 eight. So we take away 1*8=8 from 10*8=80, or in other words, 80-8 [Blank 2]= 9*8=72 [Blank 3].
Are you starting to see what I mean?
Answer:ill help all triangles should equal to 180 hope it did help you
Step-by-step explanation:
A^2 + 31 = 155 - I squared each of b and c for those numbers
a^2 = 155 - 31
a^2 = 124
a = 4 * sqrt(31)
Answer:
She will ride 13 miles in one hour
Step-by-step explanation:
(8 2/3) / (2/3) = x / 1....8 2/3 miles to 2/3 hr = x miles to 1 hr
cross multiply
(2/3)(x) = (8 2/3)(1)
2/3x = 26/3
x = 26/3 * 3/2
x = 26/2...which equals 13....she will ride 13 miles in 1 hr
P(x₁ , y₁) and Q(x₂ , y₂) ↔ [ P(0,14) Q(5, - 2)]
Distance = PQ = √[(x₂ - x₁)² + (y₂ - y₁))²]
PQ = √[(5 - 0)² + (- 2 - 14)²]
PQ = √[(25 + 256]
PQ = √281
PQ = 17.76
