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geniusboy [140]
3 years ago
13

Evaluate the expression below when x=-1. 2x - 5 x+9

Mathematics
1 answer:
Lera25 [3.4K]3 years ago
7 0
2x(-1)-5x(-1)+9 = 12
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2.88888 as a fraction
joja [24]
Yes it has a fraction on 2.88888/1 <span> = 28.8888/10 = 288.888/100 = 2888.88/1000 = 28888.8/10000 = 288888/100000</span>
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3 years ago
Order the group of quadratic functions from widest to narrowest graph. y=6x^2
LenaWriter [7]
Stretches are by the number in front of the x^2 hence the widest is least stretched (-x^2), then -4.5x^2 and lastly 6x^2
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Which equation represents a line that is perpendicular to the line represented by
Artemon [7]

Answer:y= -4x + 12

Step-by-step explanation: i graphed it

7 0
3 years ago
What is the equation of a line that passes through (7, 8) and has a slope of -3?
Luda [366]
<span><span>Using point-slope form, 
(y-8)= 7(x-8)

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y = 7x -48
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5 0
4 years ago
An angle measures 40.2° more than the measure of its complementary angle. What is the measure of each angle?
vampirchik [111]
<h3>Solving for the measurements of Complementary Angles</h3><h3>Answer:</h3>

24.9^{\circ} and 65.1^{\circ}

<h3>Step-by-step explanation:</h3>

Recall that Angles that are complementary to each other add up to 90^{\circ}.

Let a be the measure of the complementary angle.

If an angle is 40.2^{\circ} more than its complementary angle, the measure of that angle is a +40.2. The sum of both angles are expressed a +(a +40.2) but since the have to add to 90 as they are complementary, a +(a +40.2) = 90.

Solving for a:

a +(a +40.2) = 90 \\ a +a +40.2 = 90 \\ 2a +40.2 = 90 \\ 2a +40.2 -40.2 = 90 -40.2 \\ 2a = 49.8 \\ \frac{2a}{2} = \frac{49.8}{2} \\ a = 24.9

Since the other angle measures a +40.2, we can plug in the value of a to find the measure of the angle.

Evaluating a +40.2:

a +40.2 \\ 24.9 +40.2 \\ 65.1

The measure of the angles are 24.9^{\circ} and 65.1^{\circ}

4 0
3 years ago
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