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larisa86 [58]
3 years ago
8

Find the value of x. Round the answer to the nearest tenth, if needed.

Mathematics
2 answers:
wolverine [178]3 years ago
6 0
X/49 = 21/x
x^2 = 21(49) = 1029
x = √1029 = 32.1
x = 32.1
Paladinen [302]3 years ago
4 0
From the figure, we can set up three equations with three unknowns so that we can calculate the value x. The equations are as follows:

y^2 = x^2 + 49^2 ---> 
70^2 = z^2 + y^2
z^2 = 21^2 + x^2

Solving simultaneously, we obtain,
x = 7√21 = 32.1 <------- OPTION D


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In right triangle RQS, ∠Q is a right angle, RQ=55, QS=48, and RS=73.
kari74 [83]

The ratio of cos S in triangle RQS is 48 / 73

<h3 /><h3>Right angle triangle:</h3>
  • It has one angle as 90 degree
  • The sides can be found using Pythagoras theorem

∠Q = 90 degrees

Therefore, Finding cos S,

opposite side = RQ = 55

Hypotenuse = RS = 73

Adjacent side = QS = 48

Therefore,

cos S = adjacent / hypotenuse

cos S = 48 / 73

learn more on right angle triangle: brainly.com/question/13907707?referrer=searchResults

5 0
2 years ago
Somebody please answer quick, will mark whoever is first Brainliest. Select the correct answer from the drop-down menu
weeeeeb [17]

Answer: C. 3x+2y = 12

Step-by-step explanation:

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6 0
2 years ago
Mark and his three friends ate out at Applebee's. (Hint* 4 total people) Their bill totaled $52.35. If they left the server a 20
SpyIntel [72]

Answer:

Unitary cost= $15.705

Step-by-step explanation:

Giving the following information:

Their bill totaled $52.35. They left the server a 20% tip.

<u>First, we need to calculate the total cost of the meal:</u>

Total cost= 52.35*1.2= $62.82

<u>Now, we can split it into 4 equal parts:</u>

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Unitary cost= $15.705

7 0
3 years ago
12 is 8% of what number?
jeka57 [31]
We can also say this in another way ... (8% of what number is 12?)
let a be the number of which 8 % is 12 ....
<span>8/100 x a =12 </span>
<span>a=12 x 100/8 </span>
<span>a=(6/4) x 100 </span>
<span>a=(3/2) X 100
a = 150  </span>

<span>now if u want to check your answer.. substitute the value of a .....</span>
<span>(8/100) x 150=12 ....

Hope it helps !!!</span>
7 0
3 years ago
Read 2 more answers
If L is the line through the point (-3,5) having a slope of (2/3) complete the equation of L
Artist 52 [7]
Y = mx + b
slope(m) = 2/3
(-3,5)...x = -3 and y = 5
now sub and find b, the y int
5 = 2/3(-3) + b
5 = -2 + b
5 + 2 = b
7 = b

so ur equation is : y = 2/3x + 7
4 0
3 years ago
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