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Alla [95]
3 years ago
15

You roll a number cube twice. Find the probability of the event. Rolling a 1 then a 2.

Mathematics
1 answer:
kap26 [50]3 years ago
7 0
P( 1)  = 1/6
P(2) = 1/6

Probability of 1 then 2  = 1/6 * 1/6  = 1/36
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Help pleaseeeeeee, I need help
Arlecino [84]

Answer:

15, 60, and 61

Step-by-step explanation:

First we have to find the 3rd side length from 2 side length chosen. So let’s pick 8 meters and 11 meters, to find the third side length we use the Pythagorean theorem: c^2 = a^2 + b^2

c = 11^2 + 8^2 = 121 + 64 = 185 = 13.6

13.6 isn’t one of the answers so we can’t pick 11 & 8. Let’s try 11 & 15:

c = 15^2 + 11^2 = 225 + 121 = 346 = 18.6

18.6 isn’t one of the answers either. Let’s try 15 & 60:

c = 60^2 + 15^2 = 3600 + 225 = 3825 = 61.85

61.85 might be it but let’s try one more just in case:

c = 60^2 + 61^2 = 3600 + 3721 = 7321 = 85.6

Nope! That means 15, 60, and 61 are the answer. I hope this is correct!

5 0
2 years ago
A construction firm is trying to decide which of two models of a crane to purchase. Model A costs $90,000 and requires $4,000 pe
liraira [26]
Let's say hmm let's use the figures in thousands, so
model A costs 90 + 4 per year, so... ok.. after "t" years, then the cost for model A is then 90 + 4*t, or A = 90 + 4t.

now, model B is 70 + 10 per year, so,... after "t" years, model B is then
B = 70 + 10 * t, or B = 70 + 10t.

if we were to assume A < B, namely the cost of A is less than B, what would the years be? namely, what's "t"?

\bf A\ \textless \ B\implies 90+4t \ \textless \  70 + 10t\implies 90-70 \ \textless \  10t-4t&#10;\\\\\\&#10;20 \ \textless \  6t\implies \cfrac{20}{6}\ \textless \ t\implies \cfrac{10}{3}\ \textless \ t\implies 3\frac{1}{3}\ \textless \ t&#10;\\\\\\&#10;\textit{3 years and }\frac{1}{3}\textit{ or \underline{3 years and 4 months}}

after that period, then A becomes cheaper than B.
8 0
3 years ago
I need help please.
Fed [463]

Answer:

$3420

Step-by-step explanation:

multiply 95 by 36

4 0
2 years ago
Which expression use the associative property to make it easier to evaluate 20 (3/5 × 6)
Marizza181 [45]

Answer:

C

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
(01.01)<br><br> Evaluate −15 + (−4). (1 point)<br><br> Group of answer choices
arsen [322]

Answer: -19

Step-by-step explanation: when ur adding two negatives it's gonna equal a negative

8 0
2 years ago
Read 2 more answers
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