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4 years ago

PLEASE HELP AND EXPLAIN [100 POINTS] !!

Mathematics

2 answers:

Gnoma [55]4 years ago

7 0

Answer:

D) In geometry, deductive rules can be used to prove conjectures.

Step-by-step explanation:

Geometry is the part of mathematics that deals with the relationships between lines, angles and surfaces. On the other hand, deductive rules refers to argument forms where true premises result in a conclusion that must be true and are called valid arguments. Deductive arguments that are not in a valid form are called invalid arguments. What is important here is that If I assume the premises are true, is it possible that the conclusion could be false? If the answer "yes" then the argument is invalid and valid if you answer "no".

So, we can use deductive rules to prove conjectures. A conjecture is a theory based on information that is not complete. Thus, we can use the question If I assume the premises are true, is it possible that the conclusion could be false? to get valid or invalid arguments.

Sindrei [870]4 years ago

3 0

Answer:

I WOULD Help but I do not really know the subject like that hehe

Step-by-step explanation:

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Three friends went to a book shop the first bought three bros and four pencils for $30.00. The second bought two Bros and five p

skad [1K]

Answer:

total 66$

Step-by-step explanation:

let price of bro s be x and pencil be y

according to Qn

at 1 cond

3x+4=30____(1)

2x+5y=27____(2)

solve botth and get value of each bros and pencil and then at last add,30$,27$,6$,3$

7 0

3 years ago

Is (3,-3)(3,−3)left parenthesis, 3, comma, minus, 3, right parenthesis a solution of the graphed system of inequalities?

defon

Hi there!

»»————-　★　————-««

I believe your answer is:

No.

»»————-　★　————-««

Here’s why:

⸻⸻⸻⸻

If we mark the point at (3, -3), the we can tell that the point does not lie in any shaded region.
This means that it is NOT a solution to the system.

See the graph attached.

⸻⸻⸻⸻

»»————-　★　————-««

Hope this helps you. I apologize if it’s incorrect.

7 0

3 years ago

A(-3, 0) B(2, 4) C(6, -1) D(1, -5) What is the perimeter and area of quadrilateral ABCD?

Sloan [31]

Answer:

Step-by-step explanation:

7 0

3 years ago

Triangle LMN is similar to triangle XYZ with altitudes KL and WX. Find KL

Amiraneli [1.4K]

KL is 7.

Since LMN~XYZ, that means m∠N = m∠Z.

Since the angles are the same, we also know that
sin N = sin Z

Sine is the ratio of the opposite side to the hypotenuse of a right triangle. The sine of N would be the ratio of sides LK to LN, and the sine of Z would be the ratio of sides XW to XZ. That gives us:

x/28 = 3/12

Cross multiply the proportion:

12*x = 28*3
12x = 84

Divide both sides by 12:
12x/12 = 84/12
x = 7

3 0

3 years ago

Each year, ratings are compiled concerning the performance of new cars during the first 90 days of use. Suppose that the cars ha

denpristay [2]

Answer:

1. 0.0417

2. 0.1375

3. no

Step-by-step explanation:

lets define:

A as the probability that a car needs a warranty repair.

B as probability taht the car is manufactured by a company that is based in country X

we have the

prob(A) = 0.08

prob(B) = 0.60

prob(A∩B) = 0.025

a. we are to calculate the probability taht a car manufactured in country X needs a warranty repair.

= p(AIB) =

$P(\frac{AnB}{p(B)}) \\$

= 0.025/0.60

= 0.0417

2. Probability that car needs warranty repair given it was not manufactured in country X.

P(AIB')

= p(A∩B')/P(B')

= 0.08-0.025/1-0.60

= 0.055/0.40

= 0.1375

3. no, Need for warranty repair and location are not independent

5 0

3 years ago