What do you say when you see an empty parrot cage?

Mathematics

1 answer:

irina1246 [14]3 years ago

5 0

Oh no my parrot is missing

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last year the depth of the river was 4.2 feet deep. this year it dropped 24% find the depth of the river this year

zzz [600]

Answer:

3.2

Step-by-step explanation:

7 0

3 years ago

From a sample of 9,750 Ajax trucks, 273 developed transmission problems within the first two years of operation. What is the pro

-Dominant- [34]

Answer:

0.028

Step-by-step explanation:

Let sample space, S, be the trucks.

Hence, n(S)= number of trucks=9750

Let E be the event of the truck failing within the first two years of operation.

Hence, n(E)=273

Therefore by classical definition of probability, the probability of occurrence of the event E, denoted by P(E), is

P(E)= $\frac{n(E)}{n(S)}$ = $\frac{number of trucks failed within two years of operation}{Total number of trucks}$

⇒P(E)= $\frac{273}{9750}$ =0.028

7 0

4 years ago

Solve the system, using any method. y = x + 2 and x + 2y = 25

Leni [432]

$Elimination\ method\\\\\left\{\begin{array}{ccc}y=x+2&|subtract\ "x"\ from\ both\ sides\\x+2y=25\end{array}\right\\+\left\{\begin{array}{ccc}-x+y=2\\x+2y=25\end{array}\right|add\ the\ equations\ sides\ \\\----------\\.\ \ \ \ \ \ \ 3y=27\ \ \ \ \ |divide\ both\ sides\ by\ 3\\.\ \ \ \ \ \ \ \ \ \ y=9\\\\subtitute\ y=9\ to\ second\ equation\\x+2(9)=25\\x+18=25\ \ \ \ \ \ \ |subtract\ 18\ from\ both\ sides\\x=7\\\\Solution:x=7\ and\ y=9\to(7;\ 9)$