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iren2701 [21]
2 years ago
8

PLEASE HELP! YOU WILL GET 100 POINTS! SUPER CONFUSED NEED HELP AS SOON AS POSSIBLE THIS IS DUE SOON!!! QUESTION IN PICTURE BELOW

!

Mathematics
1 answer:
nekit [7.7K]2 years ago
4 0

Answer:

Q = 40.6°

Explanation:

Given three sides: 9.6, 8.1, 6.3

Use the cosine rule:

c² = a² + b² - 2ab cos(C)

Insert following variables:

6.3² = 9.6² + 8.1² - 2(9.6)(8.1) cos(Q)

39.69 = 157.77 - 155.52 cos(Q)

cos(Q) = -118.08/-155.52

cos(Q) = 41/54

Q = cos⁻¹(41/54) = 40.6°

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How do you solve this and what is the answer?
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7 0
3 years ago
Which of the following points lies on the line whose equation is y = 2 x - 3? (0, 3) (1, -1) (-1, 4)
Mashutka [201]

The equation of the line: y = 2x - 3

Put the coordinates of the points to the equation and check the equality:

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L ≠ R   INCORRECT  :(


(1, -1) → x = 1, y = -1

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L = R   CORRECT :)


(-1, 4) → x = -1, y = 4

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L ≠ R   INCORRECT :(


<h3>Answer: (1, -1)</h3>
5 0
3 years ago
Re-write the quadratic function below in Standard Form y= -9(x+3)2+2
disa [49]

Answer:

18x+y=-52

Step-by-step explanation:

we all know and love(being 100% sarcastic here)the standard form  as

ax+by=c

y=-9(x+3)*2+2----This is weird and not so nice

so lets make it nice by distributing the 9::::

y=(-9x-27)2+2

and now the 2:

y=-18x-54+2

y=-18x-52

oops this is NOT in S.F we got to switch the -52 and y

52=-18x-y

-18 cant be neg. so we have to divide by -1 on both sides

-52=18x+y

18x+y=-52

HOPE THIS HELPS

7 0
3 years ago
Read 2 more answers
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