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3 years ago

5

Recall that two angles are complementary if the sum of their measures is 90degrees°. Find the measures of two complementary angl

es if one angle is 66 degrees° more than three three times the other angle.

1 answer:

Law Incorporation [45]3 years ago

4 0

Answer:

90degrees

Step-by-step explanation:

The sum of complimentary angles will always be 90degrees

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A jar contains 3 red, 2 white, and 1 green marble. Aside from color, the marbles are indistinguishable. Two marbles are drawn at

IRISSAK [1]

Answer:

0.6

Step-by-step explanation:

A permutation is an arrangement of outcomes whereas a combination is a grouping of outcomes.

Order matters in case of permutations but does not matter in combinations.

Given:

Number of red marbles = 3

Number of white marbles = 2

Number of green marbles = 1

To find: probability of picking 4 marbles and getting one of each color

Solution:

Total number of outcomes = $6_C__4$ = $\frac{6!}{4!\,2!}=\frac{6\times 5\times 4!}{4!\times 2}=15$

Number of favourable outcomes = 2 red, 1 white and 1 green marble + 1 red, 2 white and 1 green marble = $3_C_2\,2_C_1\,1_C_1+3_C_1\,2_C_2\,1_C_1$ = $\frac{3!}{2!\,1!}\times \frac{2!}{1!\,1!}\times 1+\frac{3!}{2!\,1!}\times 1\times 1=6+3=9$

So, probability of picking 4 marbles and getting one of each color = Number of favourable outcomes/Total number of outcomes = $\frac{9}{15}=\frac{3}{5}=0.6$

4 0

3 years ago

26/14 divided by 25/5 =

eduard

Answer:

13/35 or .371428571

Step-by-step explanation:

cause its 26/14 / 5

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3 years ago

Where does the pythagorean identity sin^2 + cos^2=1 come from? How does it relate to right triangles?

Arada [10]

Consider a<span> right triangle with </span><span>hypotenuse of 1.
sin x means to divide the side in front of the angle by </span>hypotenuse<span>
cos x means to divide the side beside the angle by hypotenuse
we know that a^2+b^2=c^2 now divide two sides by c^2
$\frac{ a^{2} }{ c^{2} }+ \frac{ b^{2} }{ c^{2} }=1$
c is 1 also a/c means sinx and b/c is cos x so
sin^2(x)+cos^2(x)=1

</span>

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3 years ago

What is the difference? 2x 7 - 8x 7<br> a. -6x 14<br> b. 10x 7<br> c. -16x 7<br> d. -6x 7

spayn [35]

$2x^{7}-8x^{7}=-6x^{7}$

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3 years ago

Rhett is solving the quadratic equation 0= x2 – 2x – 3 using the quadratic formula. Which shows the correct substitution of the

Otrada [13]

(x)2 - 2x - 3 = 0

a = 1
b = -2
c = -3

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2 years ago