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dexar [7]
3 years ago
10

One angle in a triangle is 20 degrees more than the smallest angle in the triangle, while the other angle is 22 degrees more tha

n the smallest angle. find the measures of the three angles
Mathematics
1 answer:
lisov135 [29]3 years ago
7 0

Answer:

46°, 66°  , 68°

Step-by-step explanation:

let the smallest angle be x then the other 2 angles are x + 20 and x + 22

The sum of the 3 angles in a triangle = 180°

sum the 3 angles and equate to 180

x + x + 20 + x + 22 = 180 , that is

3x + 42 = 180 ( subtract 42 from both sides )

3x = 138 ( divide both sides by 3 )

x = 46

x + 20 = 46 + 20 = 66

x + 22 = 46 + 22 = 68

The 3 angles are 46° , 66°  , 68°

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Recall from Example 1 that whenever Suzan sees a bag of marbles, she grabs a handful at random. She has seen a bag containing th
hammer [34]

Answer:

Required Probability in the lowest terms as fractions =  \frac{15}{182} =0.0824

Step-by-step explanation:

Step 1:-

Given Suzan has three red marbles, two green ones, five white ones, and two purple ones.

Total marbles = 3R+2G+5W+2P = 12

The number of exhaustive cases that the five marbles drawn from 12 marbles

n(S) = 12C_{5} = 792 ways

by using formula n_{Cr_{} } = \frac{n!}{(n-r)!r!} = \frac{12!}{(12-5)!5!}   = 792

The number of favorable cases

She has drawn two red marbles from 3 red marbles, that is 3c₂ ways

she has drawn one  marble drawn from 2 green marbles, that is 2c₁ ways

she has drawn one  marble drawn from 5 white marbles, that is 5c₁ ways

she has drawn one  marble drawn from 2 purple marbles, that is 2c₁ ways

The favorable cases are (n(E) = 3c₂ X 2c₁X5c₁X2c₁ = 60 ways

Required Probability = \frac{n(E)}{n(S)}

Required  probability = \frac{n(E)}{n(S)} = \frac{60}{792}

Required Probability in the lowest terms as fractions =  \frac{15}{182} =0.0824

3 0
3 years ago
A recipe calls for their ratio of sugar to flower to be 10.3. If you use 70 ounces of sugar how many ounces of flour would you n
bulgar [2K]

This means that for every 10 of whatever measurement of sugar there will be 3 of that measurement of flour

70 oz of sugar / 10 = 7

3 (ratio of flour) times 7 = 21

21

6 0
3 years ago
If rhe discriminant of a quadratic equation is equal to -8 which statement describes the roots
Nastasia [14]

Answer:

Step-by-step explanation:

Given

Discriminant = -8

Required

Determine the type of roots

Represent Discriminant with D; such that

D = -8

D is calculated as thus

D = b^2 - 4ac

And it has the following sequence of results

When D > 0; then the roots of the quadratic equation are real but not equal

When D = 0; then the roots of the quadratic equation are real and equal

When D < 0; then the roots of the quadratic equation are complex or imaginary

Given that D = -8; This means that D < 0; and base on the above analysis, we can conclude that the roots of the quadratic equation are complex or imaginary

6 0
3 years ago
What is the unit rate in 49 points in 7 games
spayn [35]
It is 7/1 because you divide by 7 for 49/7 and 7/7 divde by both and you''ll get 7/1
3 0
4 years ago
At a concession​ stand, seven hot dog(s) and four hamburger(s) cost ​$15.00​; four hot dog(s) and seven hamburger(s) cost ​$18.0
Paraphin [41]

Answer:

hotdog $1, and hamburger $2

Step-by-step explanation:

D-is hot dogs, H-hamburgers

7D +4H = 15

4D +7H = 18

we got 2 equations with 2 unknown so we can solve

7D +4H = 15 multiply by 7

4D +7H = 18 multiply by -4

49D +28H = 105

-16D -28H = -72     add the two equations

33D= 33 so D=$1

go back to the first equation:

7*1 +4H =15 gives us 4H = 15-7; 4H = 8 so H= $2

8 0
3 years ago
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