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AlexFokin [52]
3 years ago
9

How do i find x in #21

Mathematics
1 answer:
Cerrena [4.2K]3 years ago
8 0
In quadrilaterals inscribed in circles, the sum of opposite angles=180 degrees. so, x+134=180
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Help me plz thank you
nevsk [136]

Answer:

1) Distance=Speed*time

90=(x+1)*(x)+(2x+5)(x-1)

90=x^2+x+2x^2-2x+5x-5

3x^2+4x-95=0

2) 3x^2+4x-95=0. Using quadratic formula, we get

x=(-4±sqrt(16-4*3*(-95)<u>)</u>)/6, x=5 or - 19/5 but since x also represents time, it can't be negative.

3) Total time take she took for the journey is x+x-1=2x-1=2*5-1=9 hours

4 0
2 years ago
What is the length of the hypotenuse? If necessary, round to the nearest tenth.
N76 [4]

Answer:

7 feet

Step-by-step explanation:

Pythagorean theorem

sqrt(4.5^2 + 5.3^2) = hypotenuse

sqrt(48.34) = hypotenuse

6.95269732 = hypotenuse

round to nearest tenth

7 feet = the length of the hypotenuse

7 0
2 years ago
Read 2 more answers
2x + 5y - 28<br> -2x - 5y = -18<br><br> Elimination
lidiya [134]

Answer:

no solution I believe

Step-by-step explanation:

b/c x and y cancel out so it cant be solved

6 0
3 years ago
The Walking Club is one of the after-school activities at Jefferson Middle School.
saveliy_v [14]

You first need to know how much miles it takes on the trail. Then you look 20 x 3 is one hour. And if the 3 group said it takes 2 hours waking for them its like this, the first group takes one hour to go thru the trail, but the second group takes and hour and half the 3 group takes 2 hours.

I wish this helps. :)

4 0
3 years ago
Perimeter=42 meters what is the length
Dominik [7]
4a= 42
a = 42/4 = 21/2cm
7 0
3 years ago
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