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Gelneren [198K]
3 years ago
11

Help pleasseee ASAP please I’ll mark you as brainlister please help

Mathematics
2 answers:
Olegator [25]3 years ago
7 0

Answer:

AB= 4\sqrt{3}

AC= 8

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

BC=2

AC=4

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

I'm not sure about the next 2, you can try to confirm these answers with someone else:

BC= 3\sqrt{3}

AC= 6\sqrt{3}

Step-by-step explanation:

If it's a 30,60,90 degree triangle we can find all of the lengths of each side with the formula.

Tema [17]3 years ago
3 0

Answer:

4) 8  

5)  4\sqrt{3}

6) \sqrt{3}

7) 3

8) 9/2 or 4.5

9)  9/2· \sqrt{3} or approx 7.8

Step-by-step explanation:

ratio of sides in 30-60-90° triangles are 1: \sqrt{3}: 2

30° angle represents side length of 1

60° angle represents side length of \sqrt{3}

90° angle represents side length of 2

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A car trip from New York to Cincinnati took 12.5 hours. The return trip by the same route took 1 hour longer because the average
zhenek [66]

A car trip from New York to Cincinnati took 12.5 hours. The return trip by the same route took 1 hour longer.

Let x be the speed of the car

Car trip from New York to Cincinnati

We know Distance D = speed * time

time = 12.5 hours and speed =x

D = 12.5x

Return trip

The return trip by the same route took 1 hour longer. So 12.5+1 = 13.5 hours

he average rate of speed was 4 mph less. So speed is x-4

Distance D = speed * time

time = 13.5 hours and speed =x-4

D = (x-4)*13.5

D= 13.5x-54

The distance of ongoing trip and return trip are same

So we equate both the distance equations D= 13.5x-54  and D= 12.5x

12.5x = 13.5x-54    

Subtract  13.5 on both sides

-1x = -54

x=54

speed of ongoing trip = 54 miles per hour

Distance D = 12.5x = 12.5 * 54=675 miles

The length of the route = 675 miles



4 0
3 years ago
The weight of a nickel is 80% of a quarter. If a nickel weighs 5 grams how much does a quarter weigh?
muminat

Answer:

Weight of a quarter  = 6.25 grams

Weight of a dime  = 2.5 grams

Step-by-step explanation:

The weight of a nickel is  80%

The weight of a quarter  or the weight of a nickel is 5 grams or weight of a quarter =50.8 = 6.25 grams

Weight of a dime = 50% = 12 (weight of nickel) = 52 = 2.5 grams

8 0
3 years ago
Find the area of a triangle with vertices at D(2, 0), E(–1, 0), and F(2, –7).
kati45 [8]
Im suck on the same question 
8 0
3 years ago
Read 2 more answers
PLEASE HELP ASAPPPPPPPPPPP
mixas84 [53]

\boxed{\boxed{\sf Area\:of\:the\:figure=10x^4-50x^3+5x^2+246x-196}}

Refer to the attachment for calculations.

6 0
3 years ago
Which square has a dark blue section that is 1/3 × 3/5 of the square?<br> PLEASE HELP ASAP!!!
melamori03 [73]
Hello!

1/3 × 3/5 = 3/15

The correct answer is the first rectangle, because it has a total of 15 squares, and 3 of them are shaded blue.

8 0
3 years ago
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