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shepuryov [24]
3 years ago
5

which qaudratic equation is equivalent to (x+2)^2+5(x+2)-6=0 a. (u+2)^2+5(u+2)-6=0 where u=(x-2) b. u^2+4+5u-6=0 where u= (x-2)

c. u^2+5u-6=0 where u=(x+2) d. u^2+u-6=0 where u=(x+2)​
Mathematics
1 answer:
Lisa [10]3 years ago
5 0

Answer:

D

Step-by-step explanation:

Given

(x + 2)² + 5(x + 2) - 6 = 0

Using the substitution u = x + 2 , then the equation can be expressed as

u² + 5u - 6 = 0 → D

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What is the value of x so that the line segment with endpoints W(x, −2) and X(5, −4) is parallel to the line segment with endpoi
professor190 [17]
Uhhhh I don't think that the correct answer.
First, find the gradient of the line segment.
Gradient = Rise/Run = (2-6)/(2-5) = 4/3.
Since the other line segment is parallel to this line segment, their gradients are the same.
That means (-2+4)/(x-5) = 4/3.
2/(x-5) = 4/3
It is obvious x = 6.5
7 0
3 years ago
Whats the equation of the line that passes threw -4,4 and is parrell to the line y=1/2-4
vovangra [49]

Answer:

y=\frac{1}{2}x+6

Step-by-step explanation:

Given:

The equation of the known line is:

y=\frac{1}{2}x-4

A point on the unknown line is (-4, 4)

Now, since the two lines are parallel, their slopes must be equal.

Now, slope of the known line is the coefficient of 'x' which is \frac{1}{2}.

Therefore, the slope of the unknown line is also m=\frac{1}{2}

Now, for a line with slope 'm' and a point on it (x_1,y_1) is given as:

y-y_1=m(x-x_1)

Here, m=\frac{1}{2}, x_1=-4,y_1=4. Therefore,

y-4=\frac{1}{2}(x-(-4))\\\\y-4=\frac{1}{2}(x+4)\\\\y-4=\frac{1}{2}x+2\\\\y=\frac{1}{2}x+2+4\\\\y=\frac{1}{2}x+6

Hence, the equation of the unknown line is y=\frac{1}{2}x+6.

5 0
3 years ago
Average movie prices in the United States​ are, in​ general, lower than in other countries. It would cost ​$81.73 to buy three t
stich3 [128]

Answer:

Step-by-step explanation:

In japan the average cost is  up from $.1200 in some change to

in Switzerland the average cost is 15.00 and some change

4 0
3 years ago
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5 pounds of bananas for $1.97 for 3 pounds of bananas for $1.05 which is better to buy
andrew11 [14]

Answer:

<h3>3 pounds for $1.05 is better since it is 35 cents a pound as opposed to 39 cents a pound for the other product.</h3>

Step-by-step explanation:

We need to find the unit rate. This found by dividing the price by the number of bananas so we get the price for 1 pound of bananas.

$1.97/5 = $0.39

$1.05/3 = $0.35

<h3>3 pounds for $1.05 is better since it is 35 cents a pound as opposed to 39 cents a pound for the other product.</h3>
8 0
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Baylie measured her little sister's crayons and recorded the lengths in table below. List the lengths in order from greatest to
BigorU [14]
First of all, you need to get them all in the same format, easiest is decimal.

red = 1.25
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so the order is blue, yellow, red, and lastly green
8 0
3 years ago
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