All categories

3 years ago

A trangle has a 30 angle and a 55angle .what is the other angle ？how do you know？

Mathematics

1 answer:

algol [13]3 years ago

5 0

Answer:

95°

Step-by-step explanation:

Sum of 3 angles of a triangle equals to 180°

Here we have angles of 30° and 55°, so the remaining angle is:

180° -(30° + 55°) = 95°

You might be interested in

A certain standardized test measures students’ knowledge in English and math. The English and math scores for 10 randomly select

rodikova [14]

Answer

A.
y=180.2 +0.68x

6 0

2 years ago

Sophia can walk 1.4 miles in 15 minutes. At this rate how far can she walk in an hour

spin [16.1K]

At this rate she can walk 5.6 miles because you need to multiply 1.4 by each 15 minutes until it gets to a hour so you get 5.6 miles

6 0

3 years ago

Read 2 more answers

il63 [147K]

Answer:

Step-by-step explanation:

5 0

3 years ago

Mack the bug starts at (0,0) at noon and each minute moves one unit right or one unit up. He is trying to get to the point (5,7)

PSYCHO15rus [73]

This is a very nice counting question. Suggestion / Hint: Count how many ways he can get from (0,0) to (5,7) by going through the point (2,3). Then subtract that from ALL POSSIBLE ways he can get from (0,0) to (5,7). Hint for the hint: How many ways he can get from (0,0) to (5,7) by going through the point (2,3)? Well, that's the SUM of how many ways he can get from (0,0) to (2,3) and how many ways he get get from (2,3) to (5,7). Hope this helps! :)

4 0

3 years ago

A production process is known to produce a particular item in such a way that 5 percent of these are defective. If two items are

IRINA_888 [86]

Answer:

0.0025 = 0.25% probability that both are defective

Step-by-step explanation:

For each item, there are only two possible outcomes. Either they are defective, or they are not. Items are independent of each other. So we use the binomial probability distribution to solve this question.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

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

In which $C_{n,x}$ is the number of different combinations of x objects from a set of n elements, given by the following formula.

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

And p is the probability of X happening.

5 percent of these are defective.

This means that $p = 0.05$

If two items are randomly selected as they come off the production line, what is the probability that both are defective

This is P(X = 2) when n = 2. So

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

$P(X = 2) = C_{2,2}.(0.05)^{2}.(0.95)^{0} = 0.0025$

0.0025 = 0.25% probability that both are defective

4 0

2 years ago

A trangle has a 30 angle and a 55angle .what is the other angle ？how do you know？​

A trangle has a 30 angle and a 55angle .what is the other angle ？how do you know？