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3 years ago

Anyone??? need some help huys:)

Mathematics

1 answer:

atroni [7]3 years ago

4 0

Slope-intercept form:

y = mx + b "m" is the slope

First i would isolate the "y" in the equation.

2x + y = 4 Subtract 2x on both sides

2x - 2x + y = 4 - 2x

y = 4 - 2x or y = -2x + 4

The given line's slope is -2.

For lines to be perpendicular, their slopes have to be the opposite/negative reciprocals (flipped sign and number)

For example:

slope is 2

perpendicular line's slope is -1/2

slope is -2/3

perpendicular line's slope is 3/2

The given line's slope is -2, so the perpendicular line's slope is 1/2.

The 3rd option is your answer

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A tangent and a secant x = ?

guajiro [1.7K]

x = 45°

Solution:

Given data:

Measure of larger arc = 152°

Measure of smaller arc = 62°

If a tangent and a secant intersect at the exterior of a circle then the measure of angle formed is one-half the positive difference of the measures of the intercepted arcs.

$$\Rightarrow x = \frac{1}{2}(\text{ larger arc }- \text{smaller arc} )$

$$\Rightarrow x = \frac{1}{2}(152^\circ-62^\circ)$

$$\Rightarrow x = \frac{1}{2}(90^\circ)$

⇒ x = 45°

The value of x is 45°.

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4 years ago

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zavuch27 [327]

Answer:

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lina2011 [118]

The answer would be A. The registration fee is $5.50, and the cost per download is $0.95.

Solution
Let x = registration fee
y = cost/downloads

Jack
15y + x = 19.75 ; x = 19.75 - 15y
Jim
40y + x = 43.50

Thus,
40y + x = 43.50
40y + 19.75 - 15y = 43.50
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for x,
x = 19.75 - 15y
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Step-by-step explanation:

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