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2 years ago

I don’t understand, please someone help me!!!!

Mathematics

1 answer:

pogonyaev2 years ago

7 0

Answer:

Step-by-step explanation:

im sorry but i dont now

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What is the area of triangle EDF?

Ann [662]

Answer:

4.5

Step-by-step explanation:

∠BAC ~ ∠EDF means that the triangles are similar. So the legs of the triangle share the same proportions, even if the sizes are different.

Since they share the same proportions, the same operations can be performed on each base to find the area.

The answer can be found with the knowledge that the area of a triangle is half of the height * width. You know the width of ∠BAC is 4, and the area is 8, so 16 (the area doubled) / 4 is the height. The width and height of ∠BAC are the same, and since the proportions are also the same, the width and height of ∠EDF are both 3. So the area is the width (3) times the height (3) divided by 2.

3*3 = 9

9/2 = 4.5

So the area is 4.5

6 0

2 years ago

Julian study a dog walking business over his summer break. He charges $10 for every 1/3 hour he walks a dog if he increases his

Genrish500 [490]

Answer:

The amount of increase per $\frac{1}{3}$ hour by $1.

Step-by-step explanation:

Julian charges $10 for every $\frac{1}{3}$ hour he walks a dog.

He increases his fee by 10%

Now we have to find 10% of $10

Amount increased = $\frac{10}{100} .10 = 1$

So the amount increased by $1.

The amount of increase per $\frac{1}{3}$ hour by $1.

6 0

2 years ago

A building contractor has a piece of crown molding that is 48 1/2 inches long. He cuts off one piece measuring 10 1/4 inches and

tekilochka [14]

The correct answer is 36 1/8

7 0

2 years ago

Based on the diagram below, BC = 12 and m

Mama L [17]

Answer:

Step-by-step explanation:

tan (40) = x/12

x = 12*tan(40)

6 0

2 years ago

In a Las Vegas casino, gamblers lose a mean of on each roulette game, with a standard deviation of . (Since the standard deviati

aivan3 [116]

Answer: Hello your question is poorly written attached below is the complete question

answer:

0.1515

Step-by-step explanation:

Number of bets = 200

mean number of losses = $0.2

Standard deviation = $2.74

<u>Determine P ( winning after 200 bets ) </u>

Average of 200 bets > 0. i.e. P( X > 0 )

considering normal distribution : μ = -0.2 , б = 2.74 , n = 200

applying Z - distribution

z = 0 - ( - 0.2 ) / ( 2.74 / √200 ) ≈ 1.03

∴ P ( z > 1.03 ) = 1 - P ( z < 1.03 )

= 1 - 0.8485 ( value gotten from z-table )

= 0.1515

8 0

2 years ago