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erastovalidia [21]
3 years ago
14

Find the value of x for which ABCD must be a parallelogram

Mathematics
1 answer:
lbvjy [14]3 years ago
8 0
15x+2=9x+20
6x+2=20
6x=18
x=3
PLZ Make Me Brainliest
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An epidemiologic survey of roller-skating injuries in Metroville, a city with a population of 100,000 (during the midpoint of th
Ahat [919]

Answer: c. \dfrac{90}{1800}\times100\%

Step-by-step explanation:

As per given , we have

Total number of residents injured from roller-skating =1,800

Total number of deaths from roller-skating = 90

Formula for Mortality rate : Mortaility\ rate= \dfrac{Deaths\ due \ to\ injury}{Tota\ injuries}

Then, the proportional mortality ratio (%) due to roller-skating was

=\dfrac{90}{1800}\times100\%

= 5%

Hence, the correct answer is c.\dfrac{90}{1800}\times100\%

8 0
3 years ago
A bag contains white marbles and green marbles, 52 in total. The number of white marbles is 3 less than 4 times the number of gr
valentina_108 [34]

Answer:

Step-by-step explanation:

w + g = 52

w = 4g - 3

(4g - 3) + g = 52

5g - 3 = 52

5g = 52 + 3

5g = 55

g = 55/5

g = 11....there are 11 green marbles

w + g = 52

w + 11 = 52

w = 52 - 11

w = 41 <=== there are 41 white marbles

8 0
2 years ago
Read 2 more answers
Anyone know the answer to this geometry problem?
hoa [83]
Let's talk about the choices
◯  ∠4 and ∠5 . . . . . . . . these are complementary angles whose sum is 90°
◯  ∠7 and ∠9 . . . . . . . . these are vertical angles, equal to each other
◯  ∠2 and ∠3 . . . . . . . . these are supplementary angles that together form a straight line. They are a linear pair.
◯  ∠1 and ∠2 . . . . . . . . these are "adjacent" angles in the quadrilateral that also includes ∠9 and ∠10.

The appropriate choice is ...
  ◉  ∠2 and ∠3
7 0
3 years ago
Determine whether AB is tangent to the circle with center c
GenaCL600 [577]

9514 1404 393

Answer:

  yes, no, no

Step-by-step explanation:

The triangle will be a right triangle if the sum of the squares of the two short sides, less the square of the long side, is zero. (This is what the Pythagorean theorem tells you.) The angle where the radius meets the circle must be a right angle if the line is to be a tangent.

__

a) 3^2 +4^2 -5^2 = 9 + 16 -25 = 0 . . . . AB is a tangent

__

b) 9^2 +15^2 -18^2 = 81 +225 -324 = -18 . . . . AB is not a tangent

__

c) 10^2 +48^2 -52^2 = 100 +2304 -2704 = -300 . . . . AB is not a tangent

3 0
2 years ago
The Carter family went to Brixx pizza for dinner Saturday night. Their meal costs a total of $54.65 and they want to leave their
Vlad [161]
$11 if you round up but the answer is $10.93 because $54.65 x 0.2 = $10.93
7 0
3 years ago
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