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2 years ago

Find the value of x plz plz plz

Mathematics

2 answers:

eduard2 years ago

6 0

Answer:

Step-by-step explanation:

A triangle always has 180° so that means 40° (2x+9)° and another angle add up to 180°.

We can find out two angles in order to find out the third, one of them is 40° the other is 180°-105° because there are 180° on a line.

you get 75.

75°+40°=115°

180°-115°=65°

2x+9=65°

Make x the subject of the formula:

2x=56

(take away 9)

x=28

(divide both sides by 2)

Wewaii [24]2 years ago

4 0

Answer:

X=28

Step-by-step explanation:

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2 years ago

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Consider randomly selecting a student at a large university, and let A be the event that the selected student has a Visa card an

poizon [28]

Answer:

We have that $B = 0.3$ .

$0.3 = b + (A \cap B)$

However, b is a probability, which means that it cannot be negative. So no, P(A ∩ B) cannot be 0.5. It can, at most, be 0.3.

Step-by-step explanation:

Event A:

Probability that a student has a Visa card.

Event B:

Probability that the student has a MasterCard.

We have that:

$A = a + (A \cap B)$

In which a is the probability that a student has a Visa card but not a MasterCard and $A \cap B$ is the probability that a student has both these cards.

By the same logic, we have that:

$B = b + (A \cap B)$

In this problem, we have that:

$A = 0.6, B = 0.3$

(a) Could it be the case that P(A ∩ B) = 0.5?

We have that $B = 0.3$ .

$0.3 = b + (A \cap B)$

However, b is a probability, which means that it cannot be negative. So no, P(A ∩ B) cannot be 0.5. It can, at most, be 0.3.

8 0

3 years ago

I’m not sure how to do this.. can anyone help?

Pie

Answer:

m<1 =95

m<2 = 130

Step-by-step explanation:

I take it you want the size of <1 and <2?

<ABC + 95 = 180 Same straight line.

<ABC = 180 - 95 Subtract 95 from both sides.

<ABC = 85 Combine

===========================

<1 + <ABC = 180 Interior angles on the same side of the transversal = 180

<1 + 85 = 180

<1 = 180 - 85

<1 = 95

=============================

Givens

<ABC = 85

m< 1 = 95

<ADC = 50 Given

m<2 = ?

m<2 + <ABC + m<1 + 50 = 360 The four angles of a quadrilateral add to 360

m<2 + 85 + 95 + 50 = 360

m<2 + 230 = 360

m<2 = 360 - 230

m<2 = 130

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2 years ago

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D. 1 and 2 is your answer

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nlexa [21]

I would say the 3rd one but I don’t know.

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