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3 years ago

Triangle XYZ is rotated 90° counterclockwise about the origin.

Mathematics

2 answers:

Romashka-Z-Leto [24]3 years ago

8 0

Answer:

(1, 4).

Step-by-step explanation:

For a counterclockwise rotation of 90 degrees:

(x, y) -----> (-y, x) so:

Y' (4, -1) ------> (1, 4).

Jlenok [28]3 years ago

7 0

Answer:

the answer would be (-4,1)

Step-by-step explanation:

i have taken the edgenuity unit test and received a perfect score

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An English professor assigns letter grades on a test according to the following scheme. A: Top 5% of scores B: Scores below the

tangare [24]

Answer:

Grade D score:

$69 \leq x \leq 74$

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 78.8

Standard Deviation, σ = 7.1

We are given that the distribution of scores on test is a bell shaped distribution that is a normal distribution.

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\sigma}$

D: Scores below the top 77% and above the bottom 9%

We have to find the value of x such that the probability is 0.77

$P( X > x) = P( z > \displaystyle\frac{x - 78.8}{7.1})=0.77$

$= 1 -P( z \leq \displaystyle\frac{x - 78.8}{7.1})=0.77$

$=P( z \leq \displaystyle\frac{x - 78.8}{7.1})=0.23$

Calculation the value from standard normal z table, we have,

$\displaystyle\frac{x - 78.8}{7.1} =-0.739\\\\x = 73.55$

We have to find the value of x such that the probability is 0.09

$P(X < 0.09) = \\\\P( X < x) = P( z < \displaystyle\frac{x - 78.8}{7.1})=0.09$

Calculation the value from standard normal z table, we have,

$\displaystyle\frac{x - 78.8}{7.1} = -1.341\\\\x = 69.27$

Thus, the numerical value of score to achieve grade D is

$69 \leq x \leq 74$

6 0

3 years ago

Make has 12 guavas he want to share his guavas with her 3 younger sister equally. how many guavas does each dame have

Bogdan [553]

Each person has 4 guavas (12 divided by 3 is 4)

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2 years ago

Find the function f (x) =ax2 + bx+ c whose graph contains the points (1, 2), (-2,-7), and (2, -3). Write the system of equations

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3 years ago

What do all of these polygons have in common? There are four polygons labeled A, B, C and D. Each polygon has one pair of parall

Juli2301 [7.4K]

The option that shows what all the polygons have in common is that;

B. Each appears to have exactly one pair of parallel sides.

<h3>Polygon</h3>

Looking at the polygons given, we can see that;

Polygon A has 4 sides and one pair of parallel sides and it is a quadrilateral because it has 4 sides.
Polygon B has 4 sides and one pair of parallel sides and it is a quadrilateral because it has 4 sides.
Polygon C has 6 sides and so is not a quadrilateral but a hexagon and it has a pair of parallel sides.
Polygon D has 5 sides and so is a pentagon but has a pair of parallel sides.

Looking at all the polygons the only common statement is that they a pair of parallel sides.

Read more on polygons at;brainly.com/question/5715879

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3 years ago

Find two integers whose sum is 1 and product is -2<br> TWO INTERGES

STALIN [3.7K]

Answer:

2 and -1

Step-by-step explanation:

sum = 2 + (-1)

= 1

product = 2 × ( -1)

= -2

5 0

3 years ago