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4 years ago

In the coordinate plane, quadrilateral ABCD has vertices A(-2, 3), B(4,5), C(10, -1), and D(8, -9). Let E, F, G, and H

Mathematics

1 answer:

Aliun [14]4 years ago

4 0

Answer:

G(3, 1), H(2, 3)

Step-by-step explanation:

When D is the midpoint of EG, it means ...

D = (E + G)/2

G = 2D -E = 2(3,4) -(3,7) = (2·3-3, 2·4-7) = (3, 1)

Likewise, H is ...

H = 2D -F = 2(3,4) -(4,5) = (2·3-4, 2·4-5) = (2, 3)

not my answer but i hope it helps you.

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Raphael buys one raffle ticket.

garri49 [273]

Answer:

There is a 1/250 chance that his ticket will be chosen

There is a 249/250 chance that his ticket will not be chosen

Step-by-step explanation:

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2 years ago

A box is filled with 4 red cards, 4 green cards, and 6 brown cards. A card is chosen at random from the box. What is the probabi

atroni [7]

The probability that the card chosen will not be green is 5/7

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4 years ago

Solve for an angle in right triangles

madreJ [45]

The angle of B is 56.2 degrees

<em><u>Solution:</u></em>

Given is a right angled triangle ABC

From given figure,

AB = 9

CB = 5

We have to find the angle of B

Let the angle of B be $\theta$

By definition of cosine,

$cos \theta = \frac{adjacent}{hypotenuse}$

Here, adjacent = CB and hypotenuse = AB

Therefore,

$cos \theta = \frac{5}{9}\\\\cos \theta = 0.556$

Taking cos inverse on both sides,

$\theta = cos^{-1}(0.556)\\\\\theta = 56.22038005 \approx 56.22$

Thus the angle of B is 56.22 degrees

5 0

4 years ago

A jewelry artist is selling necklaces at an art fair. It costs $135 to rent a booth at the fair. The cost of materials for each

adelina 88 [10]

Answer:

Step-by-step explanation:

12n>135+4.50n

12(15)>135+4.50(15)

180>135+67.50

180>202.50

False. They will not make a profit since the cost is 202.50 versus the selling price 180

6 0

3 years ago

Read 2 more answers

How do you determine the y-intercept and the x-intercept in an algebraic equation? I'm trying to figure out how to tell which is

natka813 [3]

If you want to find the x-intercept, you replace y in the equation with 0 and solve the equation for x.
If you want to find the y-intercept, you replace x in the equation with 0 and solve the equation for y.

Example:
$y=2x+5\\\\
\hbox{x-intercept}\\
0=2x+5\\
2x=-5\\
x=-2.5\\
\hbox{x-intercept is } (-2.5,0)\\\\
\hbox{y-intercept}\\
y=2\cdot0+5\\
y=5\\
\hbox{y-intercept is }(0,5)$

4 0

3 years ago