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3 years ago

PLS HELP!!!!!!!!!!!

Mathematics

2 answers:

dolphi86 [110]3 years ago

8 0

Answer:

Vertical angles x= 100 sorry if i'm wrong

Step-by-step explanation:

Fofino [41]3 years ago

3 0

Answer:

x=100

Step-by-step explanation:

x+80=180...(angles on a straight line add up to 180 degrees )

x=180-80

x=100

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Convert each decimal to a fraction.

worty [1.4K]

Answer:

31/100 and 215/1,000 and 6704/10,000

the pattern is you are adding another 0 to the denominator

4 0

3 years ago

a non-regular Pentagon has 3 sides that are the same length. the 4th side is 6 inches longer than the length shared by 3 of the

OlgaM077 [116]

Answer:

15 inches

Step-by-step explanation:

Okay, so we know a pentagon has 5 sides total. We also know that 3 of the sides are the same length, so let's assume those sides are n length.

n + n + n + _ + _ = 4ft 11in

The fourth side is an inch less than n.

n + n + n + (n - 1inch) + _ = 4ft 11in

The last side is 6inches more than n.

n + n + n + (n - 1inch) + 9n + 6inches) = 4ft 11in

Now that we have out equation, lets convert the 4ft 11in into just inches. 4ft = 4 x 12 inches (48 inches). Then add the 11inches and you get 59.

Now our equation is in terms of inches,

we can combine the 3 ns to 3n.

3n + (n-1) + (n +6) + 59

Then we combine all the ns and get 6n -1 +6 =59

Simplify to 6n +5 =59

then to 6n = 54

Then to n = 9.

Since we are looking for the longest side, you have to substitute n in for the side that would have the longest measure, n + 6.

9 + 6 = 15.

15 inches is your answer.

8 0

3 years ago

The perimeter of a rectangle is 60 cm. The length of the rectangle is four times the width. This

SIZIF [17.4K]

You can simply use substitution. Since 1L=4w, what we can do is substitute any Ls for 4w and vice versa.
2L+2w=60
8w+2w=60
10w=60
w=6
Next, we insert w into the equation to find the value of l.
2L+2(6)=60
2L+12=60
2L=48
L=24
We can check our answers by inserting them into the second equation
1(24)=4(6)
24=24
This is true therefore our answer is correct.

6 0

3 years ago

Simplify using Quotient<br> Rule<br> 10^12 OVER 10^8

OverLord2011 [107]

Answer:

$10^4$

Step-by-step explanation:

All you have to di is subtract the exponents.

5 0

4 years ago

An aeroplane covers a distance of 7200 km an hour how much distance will it cover in 12 hours

Vilka [71]

Answer:

86,400 km.

Step-by-step explanation:

Let x be time (hours) and y be distance (km).

If an aeroplane covers a distance of 7200 km/h then we can write an equation as y = 7200x

This means if x = 1 i.e time is one hour and the distance is 7200 km.

Therefore, in 12 hours will be x = 12, substitute x = 12 in y = 7200x.

Thus, y = 7200(12) then calculate as we receive 86,400 km.

Hence, it will cover 86,400 km in 12 hours.

Second Method

Another method involves with speed formula, speed = distance/time.

Because we want to find distance, move time to multiply with speed.

Thus, our new formula for distance is <u>distance = speed*time.</u>

Our speed is 7,200 km/h and time would be 12 because we want to find distance within 12 hours.

Hence, distance = 7200*12 = 84,600 km.

If you have any questions regarding this math problem or my answer, you can always reach out to me in comment!

5 0

3 years ago