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Lyrx [107]
1 year ago
7

Which equation correctly uses the law of cosines to

Mathematics
2 answers:
seraphim [82]1 year ago
8 0

Answer:

fourth option

Step-by-step explanation:

Using the Law of Cosines in Δ STU to find s

s² = t² + u² - 2us cosS

where t = 9, u = 10 and S = 100° , thus

s² = 9² + 10² - 2(9)(10)cos100°

Oduvanchick [21]1 year ago
5 0
I think answer should be the fourth option please give me brainlest I hope this helps
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Solve for x, 12y+6=6(y+1)
Vanyuwa [196]

For this case we must solve the following equation:

12y + 6 = 6 (y + 1)

We apply distributive property on the right side of the equation:

12y + 6 = 6y + 6

We subtract 6y on both sides of the equation:

12y-6y + 6 = 6\\6y + 6 = 6

We subtract 6 from both sides of the equation:

6y = 6-6\\6y = 0

Dividing by 6 on both sides of the equation:

y = 0

So, the result is y = 0

Answer:

y = 0

4 0
1 year ago
The measure of an angle is six more than twice the measure of its
lys-0071 [83]

Answer:

58

Step-by-step explanation:

Let the angle = x

Let the complement = 90 - x

2x = (90 - x) + 6

2x = 96 - x

3x = 96

x = 96/3

x = 32

============

The angle = 32

The complement = 90 - 32 = 58

7 0
1 year ago
Insert grouping symbols in 5 x 2 + 8 - 4 - 2 so that its value is 15
Arlecino [84]
5×2+8-4+1=15
cause
5×2=10
10+8=18
18-4=14
14+1=15
5 0
1 year ago
PLEASE HELP!!! I have no clue how to find the perimeter of MNP
vladimir1956 [14]

Answer:

130

Step-by-step explanation:

Triangle MNP is twice the size of triangle SRP. So 2(x+4)=5x-34.

Distribute: 2x+8=5x-34

Add 34 on both sides: 2x+42=5x

Subract 2x on both sides: 42=3x

Divide both sides by 3: 14=x

If x=14, then 5x-34

is 5(14)-34=70-34=36.

The perimeter of the triangle MNP is

MN+NP+PM.

MN is 36

NP is doubled the 22 because triangle MNP is twice the size of triangle MQS. So NP is 44.

PM is doubled the 25 because triangle MNP is twice the size of triangle QNR. So PM is 50.

The perimeter of the triangle MNP is

MN+NP+PM

=36+44+50

=130

3 0
1 year ago
Evaluate the variable expression x + y for the given values of x and y .<br><br> X=62.97 ; Y=-43.85
Georgia [21]

Answer: 19.12

Step-by-step explanation:

YOu jsut plug the variables into te expression X+Y

62.97 + (-43.85)

4 0
1 year ago
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