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3 years ago

180 is 40% of what number

Mathematics

2 answers:

PtichkaEL [24]3 years ago

8 0

40% of 450 =180

The answer would be 450

natulia [17]3 years ago

6 0

This is easy. Next time you need help on short ones, use a calculator

180 is 40% of 450.

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Can someone help me with this question?

belka [17]

Answer:

The required probability is 0.0155.

Step-by-step explanation:

We are given that the one-year survival rate for pancreatic cancer is 20%.

Of 12 people diagnosed with pancreatic cancer at one hospital, 6 survived one year.

The above situation can be represented through binomial distribution;

$P(X=r) = \binom{n}{r} \times p^{r} \times (1-p)^{n-r} ; x = 0,1,2,3,......$

where, n = number of trials (samples) taken = 12 people

r = number of success = 6 survived

p = probability of success which in our question is probability of

one-year survival rate for pancreatic cancer, i.e; p = 20%

Let X = Number of people survived one year

So, X ~ Binom(n = 12 , p = 0.20)

Now, the probability that 6 survived one year is given by = P(X = 6)

P(X = 6) = $\binom{12}{6} \times 0.20^{6} \times (1-0.20)^{12-6}$

= $924 \times 0.20^{6} \times 0.80^{6}$

= 0.0155

5 0

4 years ago

A right triangle has legs of lengths 14 and 16 inches. Find the length of

Mice21 [21]

Answer:

about 21.3

Step-by-step explanation:

I found the hypotenuse value by doing the Pythagorean theorem.

a^2+b^2=c^2.

"a" and "b" are the values of the legs, and "c" is the value of the hypotenuse. So, "a" is 14 and "b" is 16.

14^2+16^2=c^2

196+256=452.

Now, I found the square root of 452. The square root of 452 is 21.26029163. This value rounded to the nearest tenth is 21.3.

In conclusion, the length of the hypotenuse rounded to the nearest tenth is 21.3 inches.

6 0

3 years ago

Does anyone know this answer I don’t get it

Svetradugi [14.3K]

Answer:

∠ XYZ ≈ 66.4°

Step-by-step explanation:

Using the cosine ratio in the right triangle

cosY = $\frac{adjacent}{hypotenuse}$ = $\frac{XY}{YZ}$ = $\frac{6}{15}$ , then

∠ Y = $cos^{-1}$ ( $\frac{6}{15}$ ) ≈ 66.4° ( to 1 dec. place )

6 0

3 years ago

This has to be turned in, I have about 20 minutes, can someone please look over it and check my answers? Please help correct it

goblinko [34]

Answer:

ok I will help you because I am a nice person:)

7 0

3 years ago

1 3/4 and 1/8 divided as a simplify form

Sati [7]

Simplest form for 1 3/4 would be 7/4

Simplest form for 0.125

3 0

4 years ago