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3 years ago

Right triangles are similar. Always Sometimes Never

Mathematics

2 answers:

lora16 [44]3 years ago

8 0

Always because the all have a angle measurement of 45 45 and 90

zavuch27 [327]3 years ago

4 0

Answer:

Always

Step-by-step explanation:

Right triangles are always similar.

All right triangles have a 90 degree angle.

This means that, they would all look visually similar because of the 90 degree angle.

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Y=-x+1 y=2/3x-4 please answer this!!!!

yawa3891 [41]

Answer:

(x, y) = (-15, -14)

Step-by-step explanation:

y = x+1

y = 2/3x - 4

Next, we will substitute the value of y (first equation) into the second equation.

x+1 = 2/3x - 4

1/3x + 1 = -4

1/3x = -5

x = -15

So, y = -14

3 0

3 years ago

Nearest whole number to 67,400

MakcuM [25]

70,400 is the answer

4 0

3 years ago

Suppose that 15% of people dont show up for a flight, and suppose that their decisions are independent. how many tickets can you

geniusboy [140]

Answer: 157 tickets

Explanation:

The people not showing up for the flight can be treated as from Binomial distribution.

The binomial distribution B(n, p) is approximately close to the normal i.e. N(np, np(1 − p)) for large 'n' and for 'p' and neither too close to 0 nor 1 .

Now, Let us assume 'n' = n

and we are given

p=0.15

So now B(n,0.15n) follows Normal distribution

u=n

$\sigma^{2}$ = 0.15n

We have to calculate P(X<144) with 99% accuracy

P(X<144) = P(Z<z)

where;

z= $(144-\bar{X})\div \sigma$

z score for 99% is 2.33

i.e.

$(144-\bar{X})\div \sigma = (144-n)/\sqrt{np} = 2.33\\\ (144-n)^{2} = \ np*2.33^{2}\\\ 20736 +n^{2} - 288n = 0.15n*5.43\\\ n^{2} - 288.81n + 20736=0$

solving this we will get one root nearly equal to 157 and other root as 133

Hence the answer is 157.

8 0

3 years ago

A group of 3030 students from your school is part of the audience for a TV game show. The total number of people in the audience

nlexa [21]

Answer:

Step-by-step explanation:

In general, probably can be found as n(E)/n(S), where n(E) is the number of favorable outcomes, and n(S) is the number of total outcomes.

n(S) is the number of ways any 9 students can by picked from the audience, which is 9/140.

n(E) is the probability of picking four students from our school and five students from another school. This is (4/30)*(5/110) = 9/3300 =3/1100

n(E)/n(S) = (3/1100) / (9/140) = (3/1100) * (140/9) = 14/330

4 0

3 years ago

Kayla knows that 1/16 means "1 divided by 16." She uses this to find the decimal equivalent for 116. Enter a digit into each box

lesantik [10]

Answer:

0.0625

Step-by-step explanation:

We are given that a number

$\frac{1}{16}$

We have to find the decimal equivalent for $\frac{1}{16}$

To find the decimal equivalent to given fraction we will use division method.

By using division method

We get that

$\frac{1}{16}=0.0625$

In division ,first box filled by

Second box filled by 8

In quotient

First box filled by 0

Second box filled by 6

Third box filled by 2

Fourth box filled by 5.

6 0

3 years ago