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3 years ago

How to find the measure of angle FGC If segments AC and BD are parallel and they are cut by the transversal FE

Mathematics

1 answer:

Kitty [74]3 years ago

6 0

Angles FGC and FHD are equal by the Corresponding Angles Theorem.

Make them equal to each other in an equation.
3x - 9 = 2x + 1
Add 9 to both sides.

3x = 2x + 10
Subtract 2x from both sides.

x = 10

Plug in 10 for x in the expression for angle FGC, 3x - 9.
3(10) - 9
30 - 9 = 21

∠FGC = 21°.

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Find an equation of variation in which y varies inversely as x and y=5 and x=21. Then find the value of y when x=10.

finlep [7]

Answer:

see explanation

Step-by-step explanation:

Given that y varies inversely as x then the equation relating them is

y = $\frac{k}{x}$ ← k is the constant of variation

To find k use the condition y = 5 , x = 21

k = yx = 5 × 21 = 105

y = $\frac{105}{x}$ ← equation of variation

When x = 10, then

y = $\frac{105}{10}$ = 10.5

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3 years ago

A combination lock has 6 different numbers. You can use any number 0 - 9 in the combination, but each number can only be used ON

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3 years ago

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jeka94

Answer:

74 pages/hour

Step-by-step explanation:

The average rate of change is the difference in the numbers of pages divided by the difference in the numbers of hours.

At the end of 3 hours, 90 pages were read.

At he end of 5 hours, 238 pages were read.

Difference in hours: 5 hours - 3 hours = 2 hours.

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3 years ago

Solve the system by subtitution y = 3x + 18 y = 5x

elena-14-01-66 [18.8K]

Answer:

x=9

Step-by-step explanation:

y=3x+18=5x

thus 3x+18=5x

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2 years ago

Show that the transformation T defined by T(x1, x2) = (2x1 - 3x2, X1+4, 5x2) is not linear.

erastovalidia [21]

Let u = (1, 0) and v = (0, 1). Then

T (u) = (2*1 - 3*0, 1 + 4, 5*0) = (2, 5, 0)

T (v) = (2*0 - 3*1, 0 + 4, 5*1) = (-3, 4, 5)

=> T (u) + T (v) = (-1, 9, 5)

but

T (u + v) = T (1, 1) = (2*1 - 3*1, 1 + 4, 5*1) = (-1, 5, 5)

=> T (u + v) ≠ T (u) + T (v)

which means T does not preserve addition, so it is not linear.

4 0

2 years ago