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3 years ago

Given m n, find the value of x and y. (37-18) (8x+12) m (2X+18) n

Mathematics

1 answer:

adelina 88 [10]3 years ago

5 0

Answer:

Step-by-step explanation:

The two inside angles will sum to 180°.

The top to angles are equal.

Think about this as what if both of the parallel lines were intersected by a perpendicuar line. Every angle would be a right triangle 90°. The inside angles will sum to 180° and the opposite angles are again equal.

(2x + 18) + (8x + 12) = 180

10x + 30 = 180

10x = 150

x = 15

-------------------------

(3y - 18) = (8x + 12) x = 15

(3y - 18) = (8(15) + 12)

(3y - 18) = (120 + 12)

(3y - 18) = 132

3y = 132 + 18

3y = 150

y = 50

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wel

Answer:

$z=\frac{15\sqrt{3}}{2}$

Step-by-step explanation:

In leftmost triangle:

opposite side =y

adjacent=a

now, we can use trig formula

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now, we can solve for y

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3 years ago

PLEASE HELP!! Dee bought 6 dolls and 2 toy trains for $55. At the same prices, Joy bought 4 dolls and 7 toy trains for $65. What

GuDViN [60]

Answer:

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and The Cost of 1 toy train = $ 5

Step-by-step explanation:

Let the price of 1 doll = $ x

The price of 1 toy train = $ y

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6 x + 2 y = $ 55

and 4 x + 7 y = $ 65

Solving the given system of equation,

From (1), we get

$x= \frac{55 - 2y}{6}$

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Hence, the cost of 1 doll = x = $ 7.5

and the Cost of 1 toy train = y = $ 5

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3 years ago