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4 years ago

How do you do this? It's so confusing! Please help!

Mathematics

1 answer:

Dima020 [189]4 years ago

6 0

Check the picture below.

notice AB ⟂ BC , whilst ∡B = 30°.

now, if we run a perpendicular line from C to AB, it'll be a 90° angle at M, however ∡AMC has to be 105°, so it has to be slanted more towards A, like in the picture, and surely you already know which one is the shortest.

You might be interested in

A ring is reduced to £840. This is a saving of 40% of the original price. What was the original price

krok68 [10]

The answer is 1400, good luck

7 0

2 years ago

LSA of a cube is 1600cm2, then its edge is:

Nimfa-mama [501]

Answer:

20 cm

Step-by-step explanation:

A cube has 6 faces. Two of the faces are bases. The other four faces are lateral faces.

Let the area of 1 face = x

4x = 1600 cm^2

x = 400 cm^2

Since the area of 1 face is 400 cm^2, then the side length is sqrt(400 cm^2) = 20 cm

Answer: 20 cm

3 0

3 years ago

According to a survey of 100 people regarding their movie attendance in the last year, 40 had seen a science fiction movie, 55 h

erastovalidia [21]

Answer:

The probability that at least one movie had seen P(S∪(AD)∪H) = 0.75

Step-by-step explanation:

The total number of movie attendance in the last year n =100

Let 'S' be the event had seen science fiction movie

The probability of that the event had seen science fiction movie

P(S) = 40/100 = 0.4

Let 'AD' be the event had seen adventure movie

the probability of that the event had seen adventure movie

P(AD) =55/100 = 0.55

Let 'H' be the event had seen Horror movie

The probability of that the event had seen Horror movie

P(H) =20/100 = 0.2

given data 25 had seen a science fiction movie and an adventure movie

The probability of that the seen a science fiction movie and an adventure movie

that is P(S∩(AD)) = 25/100=0.25

Given 5 had seen an adventure movie and a horror movie

The probability of that the seen adventure movie and a horror movie

That is P((AD)∩ H) = 5/100=0.05

Given 5 had seen an science movie and a horror movie

The probability of that the seen science movie and a horror movie

That is P((S∩ H) = 15/100=0.15

Given only 5 people had seen a movie from all three categories.

The probability of that the seen a movie from all three categories.

That is P(S∩(AD)∩H) =5/100=0.05

The probability that at least one movie had seen P(S∪(AD)∪H) =

= P(S)+P(AD)+P(H) - P(S∩(AD)-P((AD)∩ H)-P((S∩ H) + P(S∩(AD)∩H)

= 0.4+0.55+0.2-0.25-0.05-0.15+0.05

= 0.75

3 0

4 years ago

Elevation is a measure of height in relation to sea level. The highest feature on Earth is Mount Everest with an elevation +29,0

Sphinxa [80]

Answer:

$Sea\ Level = 0\ ft$

The farthest point is the Challenger Deep

Step-by-step explanation:

Given

$Highest = +29029ft$

$Least = -35,797ft$

Solving (a): The sea level

Both elevations had signs in front of them.

The sea level is the point at the neutral level, neither positive nor negative.

Hence:

$Sea\ Level = 0\ ft$

Solving (b): Farthest Point.

The farthest point is the one with the highest magnitude.

Comparing

$Highest = +29029ft$ to $Least = -35,797ft$

-35,797 ft has the highest magnitude.

Hence:

<em>The farthest point is the Challenger Deep</em>

5 0

3 years ago

Claculate the height (x) of the tree.

Alexeev081 [22]

Answer:

50√3/3

Step-by-step explanation:

30-60-90 triangle

50:x = 2sqrt3 : 2

50*2 =100

100/2sqrt3 = 3

50√

Please mark me brainiest..

5 0

4 years ago