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Leto [7]
4 years ago
10

Use the elimination method to solve the system of equations. Choose the

Mathematics
1 answer:
otez555 [7]4 years ago
5 0

Answer:

A. (-1, -2)

Step-by-step explanation:

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A card is drawn from a standard deck. Find the probability of drawing a heart or a 7.
Mazyrski [523]
<h3>Answer:   4/13</h3>

=======================================================

Explanation:

There are A = 13 hearts and B = 4 copies of "7"

The count A+B = 13+4 = 17 may seem like it's the count of hearts or "7" cards, but we're double counting the 7 of hearts. So the true count is actually 17-1 = 16

There are 16 cards we want (either a heart or a "7") out of 52 total. Therefore, the probability is 16/52 = (4*4)/(4*13) = 4/13

6 0
3 years ago
3rd attempts :'))))))))
never [62]

I used substitution to get to this, but not fully sure if this is correct (solve quadratic)

4 0
3 years ago
If an image of a triangle is congruent to the pre-image, what is the scale factor of the dilation?
likoan [24]

Answer:

The scale factor is 1.

Step-by-step explanation:

Let k be the scale factor of a dilation of triangle ABC to form the image triangle A'B'C'.

The dilation is a magnification if

|k|  > 1

In this case, the preimage will be similar to the image triangle.

If

- 1\:  <  \: k \:  <  \: 0 \:  \: or \: \:  0 \:  <  \: k \:  <  \: 1

the dilation is a reduction. The image and pre-image will still be similar.

But if

k = 1

the image is the same as the preimage.

We say the pre-image is congruent to the image triangle.

5 0
3 years ago
Can any one tell me if this is right
VikaD [51]
The vertex should be at (1,2) because the equation is in vertex form.
5 0
3 years ago
HELP PLZ TIMED TEST 10 ponits
Archy [21]

Answer:

4...    hope this will help

Step-by-step explanation:

5 0
4 years ago
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