Rectangle qrst is shown. angle qrt is congruent to angle str, and angle str is complementary to angle qtr. which statement is true about angles qrt and qtr? they are congruent. they are complementary. they are supplementary. they are right angles.

Rectangle qrst is shown. angle qrt is congruent to angle str, and angle str is complementary to angle qtr.

Rectangle can be split into two triangles qtr and str.

We know every angle in a triangle is 90 degree.

In a triangle qtr,  ∠rqt is 90 degree. Also we know the sum of angles in a triangle is 180 degree.

So ∠rqt + ∠qtr + ∠qrt = 180 degree

90 + ∠qtr + ∠qrt = 180 (Subtract 90 on both sides)

∠qtr + ∠qrt = 90

Hence , ∠qtr and  ∠qrt are complementary angles.

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step-by-step explanation:

answer:

step-by-step explanation:

here, the total dishes = 10

dishes having meat = 3 ( chicken, meatloaf and hamburger )

thus, the probability of having meat on the chosen dishes = number of dishes having meat / total dishes

=

therefore, the probability of not having meat = 1- the probability of having meat on the chosen dishes

=

=

=

⇒ option b is correct.