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SashulF [63]
3 years ago
11

50 POINTS !! PLEASE HELP !! ILL GIVE BRAINLIEST TO THE RIGHT ANSWERS.

Mathematics
2 answers:
Anestetic [448]3 years ago
5 0

Use Pythagorean theorem,   C^2 = A^2 + B^2

Where c is the hypotenuse, and b and a are the sides.

Substitute and solve:

C^2 = 6^2 + 8^2

C^2 = 36 + 64

C^2 = 100

\sqrt{C^2} = \sqrt{100}

C = 10

Sidana [21]3 years ago
5 0
I THINK IT MIGHT BE 10
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1 Andre tried to solve the equation: 1/4(x+12)=2. What was his mistake.
svetoff [14.1K]

Answer:

the correct answer is x=-4

Step-by-step explanation:

the mistake he made is writing 1/4x=-10 instead of 1/4x=-1

He should have wrote -1 instead of -10

3 0
3 years ago
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What is 2+2 i need to know
Kaylis [27]

Answer:

4

Step-by-step explanation:

2+2=4

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3 years ago
"If two cards are drawn at random without replacement from a standard deck, find the probability that the second card is a face
PolarNik [594]

Answer:

C. P(F|Q) = \dfrac{11}{51}

Step-by-step explanation:

it is to be noted that the question is only asking for the probability of the 2nd card given that the first card was queen (P(F|Q)), and not asking for the probability of 1st card to be queen and 2nd card to be faced cardP(Q\,\text{and}\,F)

we can represent it in an expression:

P(Q\,\text{and}\,F) = P(Q)P(F|Q)

here P(Q) is the first event: Queen

and P(F|Q) is the second event: Faced card, given that the Queen is taken

--------------------------------

we only need to know what is P(F|Q), and that can be found directly found:

let's start with P(Q), what is the probability that the first card is a Queen? Well, there are 4 queens in a standard deck of 52 cards, so the probability should be:

P(Q) = \dfrac{4}{52}

now we have taken our queen, but we haven't put it back in the deck. so the amount of cards in the deck now are 51.

let's calculate P(F|Q),now that one queen is taken out, what is the probability of the next card to be a faced card? Well, in a standard deck there are 12 faced cards, but in our case one queen is already taken out, so there are 11 faced cards in our deck!

P(F|Q) = \dfrac{11}{51}

and this our answer!

8 0
3 years ago
26) In triangle ABC, if AB-BC and B
MariettaO [177]

Answer:

55degrees

Step-by-step explanation:

Let the other angles of the triangle are x, x degrees. Since the sum of angles in a  triangle is 180degrees, hence;

<A + <B+ <C = 180

x + 70 + x = 180

2x+70 = 180

2x = 180 - 70

2x = 110

x = 110/2

x = 55

SInce <A is equal to x, hence <A is 55degrees

3 0
3 years ago
3. There are 350 people in an office building. A local deli randomly surveyed people in the building to determine the average am
IrinaK [193]

Answer:

(a)Sample 1

The Mean = 20

The median = 25

Sample 2

The Mean = 31

The median = 60

(b) Sample 1 has the least spread

Sample 1 has the least deviations from the mean

(c) Sample 1 align with the third sample

The least representative of the population is sample 1

Step-by-step explanation:

The mean is ∑fx/∑f

∑fx = 30 + 25 + 10 + 25 + 10 = 100

∑f = 5

Mean = 100/5 = 20

For the median, we arrange the data in increasing order;

10, 10, 25, 25, 30

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Sample 2

The mean is ∑fx/∑f

∑fx = 5 + 60 + 10 + 30 + 50 = 155

∑f = 5

Mean = 155/5 = 31

For the median, we arrange the data in increasing order;

5, 10, 30, 50, 60

The median = the middle number = 30

(b) Sample 1 range =$30 -$10 = $20

Sample 2 range =$65 -$5 = $60

Sample 1 has the least spread

Sample 1 standard deviation = 9.354

Sample 2 standard deviation =24.083

Sample 1 has the least deviations from the mean

(c) $30, $25, $20, $20, $25

Mean = 24

$20, $20, $25, $25, $30

Median = $25

∑fx = 120

Therefore sample 1 align with the third sample

The least representative of the population is sample 1 with ∑fx = 100.

5 0
3 years ago
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