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Dmitry_Shevchenko [17]
3 years ago
15

Find the value of x in the figure below. 26 56 Х

Mathematics
1 answer:
SashulF [63]3 years ago
4 0
The answer is 30

Explanation:

So all of the angles in a triangle add up to 180 degrees and so if you split the triangle into separate triangles then you can add up the angles that are known and subtract from 180 to get the size of the missing angle e.g 90 + 56 = 146, 180 -146 = 34 for the other triangle 90 + 26 = 116, 180 - 116 = 64 and so 64 - 34 = 30
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Please help ASAP. Please show ur work
Vaselesa [24]
The answer is

2. 2a+12

Show work

2a+7+2a+7+4+4= 4a+22

A+2+a+2+3+3 = 2a+10

(4a+22)-(2a+10) = 2a+12
6 0
3 years ago
Ify is 6 when x is 3 and y varies directly with x, find y when x is 8.
Contact [7]
Y would be 16,

y=kx
6=3k
2=k
y=2(8)
y=16
4 0
3 years ago
The sum of three numbers in <br> g.p. is 21 and the sum of their squares is 189. find the numbers.
sashaice [31]
Let the three gp be a, ar and ar^2
a + ar + ar^2 = 21 => a(1 + r + r^2) = 21 . . . (1)
a^2 + a^2r^2 + a^2r^4 = 189 => a^2(1 + r^2 + r^4) = 189 . . . (2)
squaring (1) gives
a^2(1 + r + r^2)^2 = 441 . . . (3)
(3) ÷ (2) => (1 + r + r^2)^2 / (1 + r^2 + r^4) = 441/189 = 7/3
3(1 + r + r^2)^2 = 7(1 + r^2 + r^4)
3(r^4 + 2r^3 + 3r^2 + 2r + 1) = 7(1 + r^2 + r^4)
3r^4 + 6r^3 + 9r^2 + 6r + 3 = 7 + 7r^2 + 7r^4
4r^4 - 6r^3 - 2r^2 - 6r + 4 = 0
r = 1/2 or r = 2
From (1), a = 21/(1 + r + r^2)
When r = 2:
a = 21/(1 + 2 + 4) = 21/7 = 3
Therefore, the numbers are 3, 6 and 12.
3 0
3 years ago
5 5/6 divided by 6 1/8 is
maw [93]
5 5/6 = 35/6
6 1/8 = 49/8

35/6 divided by 49/8=
35/6 x 8/49
= 280/294
Simplified form: 20/21
4 0
3 years ago
How many solutions does the following equation have ? 12x+18=-3(-4x-6)
butalik [34]

(−∞,∞) infinite solutions

6 0
3 years ago
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