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monitta
3 years ago
11

Challange your slef >:) try to answer it! Given a triangle with vertices A(4, -1), B(-3,0), and C(7,2), which points represen

t a
reflection of Triangle ABC in the y-axis?
O A(4,1), B(-3,0) (7,-2)
O None of the other answers are correct
O A(-4,-1), B(3,0), C(-7,2)
O A(-1,4), B(0, -3). C(2,7)
O A(-4,1), B(3,0), C(-7, - 2)
Mathematics
1 answer:
NeTakaya3 years ago
4 0

Answer:

The correct answer is letter A.

Step-by-step explanation:

You might be interested in
Triangle ABC has the coordinates A(-3, -2), B(2, 4) and C(2,-2). What is the area of triangle ABC?
Snezhnost [94]

Answer:   The area is 15 square units

Step-by-step explanation:  It is helpful to sketch the coordinates on a graph to get an idea of what the triangle looks like so you can see which side will be the base, and where to get the height. You will see that AB is the hypotenuse, it is a right triangle, so AC can be the base and BC is the height.

Use the differences in x-values of points C & A to get the length of the base:   2-(-3) is 5

Use the differences in y-values of points B & C to get the height:

4-(-2) = 6

Area = bh/2

A = 5×6/2 = 30/2

A = 15 square unts

3 0
3 years ago
The access code for a garage door consists of three digits. Each digit can be any number from 1 through 5​, and each digit can b
Papessa [141]

Answer:

(a) 125

(b) \dfrac{1}{125}

(c) \dfrac{124}{125}

Step-by-step explanation:

We are given that access code consists of 3 digits.

Each digit can be any digit through 1 to 5 and can be repeated.

Now, this problem is equivalent to the problem that we have to find:

The number of 3 digit numbers that can be formed using the digits 1 to 5 with repetition allowed.

(a) We have 3 places here, unit's, ten's and hundred's places respectively and  each of the 3 places have 5 possibilities (any digit allowed with repetition).

So, total number of access codes possible:

5\times 5 \times 5 = 125

(b) Suppose, an access code is randomly selected, what is the probability that it will be correct.

Formula for probability of an event E can be observed as:

P(E) = \dfrac{\text{Number of favorable cases}}{\text {Total number of cases}}

Here, only 1 code is correct, so

Number of favorable cases = 1

Total number of cases = 125

So, required probability:

P(E) = \dfrac{1}{125}

(c) Probability of not selecting the correct access code on first time:

P(\overline E) = 1-P(E)\\\Rightarrow P(\overline E) = 1-\dfrac{1}{125}\\\Rightarrow P(\overline E) = \dfrac{125-1}{125}\\\Rightarrow P(\overline E) = \dfrac{124}{125}

So, the answers are:

(a) 125

(b) \dfrac{1}{125}

(c) \dfrac{124}{125}

7 0
3 years ago
A pencil is 23 centimeters long is a ruler is 14 cm shorter what is the length of the ruler​
Mamont248 [21]

Answer:

9

Step-by-step explanation:

subtract 14 from 23 to get 9

3 0
3 years ago
5x + 3y = 26<br> 6x+ 7y=21
kupik [55]

Answer:

x = -1

Step-by-step explanation:

5x + 3y = 26

- (6x + 7y = 21)

_________

-x - 4x = 5

-5x = 5

x = -1

7 0
1 year ago
8. The equation at the right has been incorrectly solved.
ozzi
The equation at the right has been incorrectly solved, the answer to this is b = -7
8 0
2 years ago
Read 2 more answers
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