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castortr0y [4]
3 years ago
7

Find the values of x and y?

Mathematics
2 answers:
elena-14-01-66 [18.8K]3 years ago
5 0

Answer:

x = 20

Step-by-step explanation:

I don't see a y in the diagram.

The 3 angles x, 90 and (4x - 10) lie on the line EF and sum to 180°, so

x + 90 + 4x - 10 = 180, that is

5x + 80 = 180 ( subtract 80 from both sides )

5x = 100 ( divide both sides by 5 )

x = 20

S_A_V [24]3 years ago
5 0
X=20 is the answer
Gsjsjaka
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ohaa [14]

Answer:

The required point is, (7, -2)

Step-by-step explanation:

The straight  line passing through (0,0) and (2,7) is,

y = (\frac {7 -0}{2-0}) \times x

⇒ y = 3.5x --------------(1)

Now, the straight line perpendicular to this line and passing through (0, 0) is

y = (\frac {-1}{3.5}) \times x

⇒ 7y + 2x = 0 -------------(2)

Let, (h,k) be the required point.

then, it is on the line 7y + 2x = 0

⇒7k + 2h = 0

⇒k = (\frac {-2}{7}) \times h ------------(3)

Again, distance from (0,0) of (h, k) is same as that of (2,7)

⇒ h^{2} + k^{2} = 4 + 49 = 53

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⇒h = 7 [since, (h,k) is in 4th quadrant, so,h >0]

So, k = -2 [putting the value of h in (3)]

So, the required point is, (7, -2)

5 0
3 years ago
Factorize fully 12x^3-4x^2
serg [7]

Answer:

4x² (3x - 1)

Step-by-step explanation:

→ Find the LCM of 12 and 4

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→ Find the LCM of x³ and x²

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4x² (? - ?)

→ Complete the operations of 12x³ ÷ 4x² to find the first ? and 4x² ÷ 4x² to find the second ?

12x³ ÷ 4x² = 3x

4x² ÷ 4x² = 1

→ Therefore,

∴ 4x² (3x - 1)

4 0
3 years ago
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4(2k - 3) + 1 = 8k - 11
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So, these two equations equal to the same thing.
Glad I could help and gave a fantastic day!
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