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2 years ago

Solve for the missing angle with the question mark

Mathematics

1 answer:

mash [69]2 years ago

4 0

Answer:

it's 60

Step-by-step explanation:

I have done that before

You might be interested in

The expression 3r - 6 can be written as _____. A:3(r - 2) B:3(r - 6) C:3(3r - 6)

Zolol [24]

Answer:

<h3> $\boxed{ \bold{ \sf{ \boxed{3(r - 2)}}}}$ </h3>

Option A is the correct option.

Step-by-step explanation:

$\sf{3r - 6}$

▪️If there is a common factor in each term of an expression, the common factor can be taken as the factor with the remaining terms.

Here, taking 3 common

$\sf{3(r - 2)}$

Hope I helped!

Best regards!!

3 0

3 years ago

Read 2 more answers

It is known that 10% of the 9-year old children in a town have three siblings. Fifteen 9-year old children are selected at rando

inn [45]

Using the binomial distribution, it is found that there is a 0.0555 = 5.55% probability that more than 3 of these selected children have three siblings.

<h3>What is the binomial distribution formula?</h3>

The formula is:

$P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}$

$C_{n,x} = \frac{n!}{x!(n-x)!}$

The parameters are:

x is the number of successes.

n is the number of trials.

p is the probability of a success on a single trial.

In this problem, for the parameters, we consider that:

10% of the 9-year old children in a town have three siblings, hence p = 0.1.

Fifteen 9-year old children are selected at random, hence n = 15.

The probability that more than 3 of these selected children have three siblings is given by:

$P(X > 3) = 1 - P(X \leq 3)$

In which:

$P(X \leq 3) = P(X = 0) + P(X = 1) + P(X = 2) + P(X = 3)$

Then:

$P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}$

$P(X = 0) = C_{15,0}.(0.1)^{0}.(0.9)^{15} = 0.2059$

$P(X = 1) = C_{15,1}.(0.1)^{1}.(0.9)^{14} = 0.3432$

$P(X = 2) = C_{15,2}.(0.1)^{2}.(0.9)^{13} = 0.2669$

$P(X = 3) = C_{15,3}.(0.1)^{3}.(0.9)^{12} = 0.1285$

$P(X \leq 3) = P(X = 0) + P(X = 1) + P(X = 2) + P(X = 3) = 0.2059 + 0.3432 + 0.2669 + 0.1285 = 0.9445$

P(X > 3) = 1 - 0.9445 = 0.0555

0.0555 = 5.55% probability that more than 3 of these selected children have three siblings.

More can be learned about the binomial distribution at brainly.com/question/24863377

5 0

1 year ago

Evaluate x/y + 3z^2 for x= 2/3, y= 6/7, and z=3

prohojiy [21]

x/y + 3z^2 for x= 2/3, y= 6/7, and z=3

=2/3 / 6/7 + 3(3^2)

=2/3 * 7/6 + 3(9)

= 7/9 + 27

= 7/9 + 243/9

= 250/9

answer is a. 250/9

6 0

2 years ago

Read 2 more answers

You would like to buy new carpet for a room. The room is rectangular. The dimensions are 12 1 third feet by 10 3 over 4 feet. Ho

KatRina [158]

12 1/3 * 10 3/4 = 132.583ft^2
= 133ft^2

3 0

2 years ago

Help me please asap

abruzzese [7]

Answer:

So the right answer is none

Step-by-step explanation:

-6≤1+3x

3x≥-7

x≥-2,33

-2,33>-5>-6>-11

so none of those are bigger then -2,33 and x is bigger then -2,33

3 0

2 years ago