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3 years ago

The measure of the two angles in a triangle are shown in the diagram Which equation can be used to find the value of x?

Mathematics

2 answers:

Gnesinka [82]3 years ago

4 0

Answer:

48+2x=180

Step-by-step explanation:

This is an isosceles triangle, this means that two of the sides/angles are the same. I'm not 100% sure if I'm right though.

ASHA 777 [7]3 years ago

3 0

So it’s 66 degrees for x

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第 5 个问题 a multiple choice exam has 10 questions. each question has 3 possible answers, of which one is correct. a student knows

tatuchka [14]

The chances that the student was merely guessing is 1/3.

Bayes Theorem determines the conditional probability of an event A given that event B has already occurred.

denoted by

$P(A/B)=\frac{P(A)*P(B/A)}{P(B)}$

let A be the event that the student knows the answer .

B be the event that the student does not knows the answer .

and

E be the event he gets answer correct .

According to the given question

$P(A)=\frac{4}{10} \\\\ P(B)=1-\frac{4}{10} =\frac{6}{10}$

Probability that the answer is correct ,given that he knows the answer is

$P(E/A)=1$

Probability that the answer is correct ,given that he guesses it is

$P(E/B)=\frac{1}{3}$ [as the MCQ has 3 options and only one is correct]

We need to find the probability that he guesses the answer given that it is correct.

Required probability $P(B/E)=\frac{P(B)*P(E/B)}{P(A)*P(E/A)+P(B)*P(E/B)}$

Substituting the values we get

$P(B/E)=\frac{\frac{6}{10} *\frac{1}{3} }{\frac{4}{10} *1+\frac{6}{10} *\frac{1}{3} }$

$=\frac{6}{30}*\frac{30}{18} \\ \\ =\frac{6}{18} \\ \\ =\frac{1}{3}$

Therefore , the chances that the student was merely guessing is 1/3.

Learn more about Probability here brainly.com/question/13140147

#SPJ4

8 0

1 year ago

Which expression is equivalent to -3.5(4x – 3)? A. -3.9x – 3.2 B. -3.9x + 3.2 C. -14x + 10.5 D. -14x – 10.5

romanna [79]

Answer:

I do not know

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

Jordan is cutting a 2 \text{ m}2 m2, start text, space, m, end text by 1\dfrac14\text{ m}1 4 1 m1, start fraction, 1, divided

sineoko [7]

Answer:

The area of each of the pieces is $\frac{5}{4} \ m.$

Step-by-step explanation:

The question is incomplete, so below is the complete question:

Jordan is cutting 2 meters by 1 \frac{1}{4} m piece of rectangular paper into 2 pieces along its diagonal.What is the area of each of the pieces?

Now, to get the area of each piece of paper.

So, the dimensions of piece of rectangular paper is 2 meters by $1\frac{1}{4}\ m.$

Now, to get the area of rectangular piece of paper:

$2\times 1\frac{1}{4}$

$=2\times \frac{5}{4}$

$=\frac{10}{4}\ m.$

The area of rectangular piece of paper = $\frac{10}{4} \ m.$

As, Jordan is cutting the piece of rectangular paper into 2 pieces along its diagonal.

Thus, the area of both the piece of paper are equal.

Now, to get the area of each piece of paper we divide the area of rectangular piece of paper by 2.

$\frac{10}{4} \div 2$

$=\frac{10}{4} \times \frac{1}{2}$

$=\frac{10}{8}$

On simplifying it:

$=\frac{5}{4}\ m.$

Therefore, the area of each of the pieces is $\frac{5}{4} \ m.$

6 0

3 years ago

Read 2 more answers

Point P is plotted on the number line. Point Q is the opposite of point P. Determine the location of point Q on the number line.

Art [367]

Answer:

b jdjsnsbsjajiasejsiwosjbejdbd

7 0

3 years ago

Andria is conducting an experiment to determine whether a new medication is effective in reducing swelling. She gets 1,000 volun

Fittoniya [83]

Answer:

The medicine treats swelling

Step-by-step explanation:

"The control group does not receive any medication; the treatment group receives the medication. The patients in the treatment group show reduced signs of swelling. What can Andria conclude from this experiment?"

If she does not give placebo, which she should, then we can only conclude that the medication might be effective. Might, because the thought of the medicine fixing swelling might actually be what helps them.

This takes us to the next topic- placebo experiments.

Most good experiments, to elaborate, are "double blind," one group receives a placebo, and another the medication, and neither know which.

In this case, assuming that the placebo was ineffective, we can conclude that the medicine is effective in treating swelling.

7 0

3 years ago