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Agata [3.3K]
2 years ago
5

What is the image of the point (2, 8) after a rotation of 270 counterclockwise about the origin ?

Mathematics
2 answers:
jok3333 [9.3K]2 years ago
6 0

Answer:

(8,-2)

Step-by-step explanation:

x and y switch places and x's sign is changed

Ivenika [448]2 years ago
4 0
The answer is (8, -2)
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-2(0)^2-3(0)+8 solve for math
Ksivusya [100]
If we times 0 with any number, we can get 0. Then only 8 will remain
8 is the answer.
8 0
2 years ago
How do you create a restriction for √z + 8=13 ?
Zinaida [17]
√z = 13 - 8
√z = 5
z = 5²
z = 25
In this case the z can be any number, however z cannot be less than 0 and that is the restriction. (for example; √-1 = irrational number, cannot be solved.)
6 0
3 years ago
Read 2 more answers
Allen's hummingbird (Selasphorus sasin) has been studied by zoologist Bill Alther.† Suppose a small group of 10 Allen's hummingb
ruslelena [56]

Answer: provided in the explanation segment

Step-by-step explanation:

(a). from the question, we can see that since that б is known, we can use standard normal, z.

we are asked to find an 80% confidence interval for the average weights of Allen's hummingbirds in the study region. What is the margin of error?

⇒ 80% confidence interval for the average weight of Allen's hummingbirds is given thus;

x ± z * б / √m

which is

3.15 ± 1.28 * 0.32/√10

= 3.15 ± 0.1295 = 3.0205 or 3.2795

(b). normal distribution of weight (c) б is known

(c). option (a) and (e) are correct

(d).  from the question, let sample size be given as S

this gives';

1.28 * 0.32/√S = 0.15

√S = (1.28 * 0.32) / 0.15 = 2.73

S = 7.4529

cheers i hope this helps

6 0
2 years ago
The height of a square pyramid-shaped gift box is one half the length of
Schach [20]

Answer:

15 inches

Step-by-step explanation:

Volume of a squre based pyramid :

V = a²(h/3)

a = base edge ; h = height

h =1/2 a

V = 4500

4500 = a² * (1/2a) ÷ 3

4500 = a² * a/2 * 1/3

4500 = a³/2 * 1/3

4500 = a³ / 6

27000 = a³

27000 = a³

Take the cube root of both sides

(27000)⅓ = a

30 = a

Recall:

h = 1/2a

h = 1/2(30)

h = 15 inches

5 0
3 years ago
The angled of a triangle are in the ratio of 2:3:4 find angles in degrees
jeyben [28]

40°, 60° and 80°

sum the parts of the ratio 2 + 3 + 4 = 9

The sum of the angles in a triangle = 180°

Divide 180 by 9 to find one part of the ratio

\frac{180}{9} = 20° ← 1 part of the ratio

2 parts = 2 × 20 = 40°

3 parts = 3 × 20 = 60°

4 parts = 4 × 20 = 80°

The angles in the triangle are 40°, 60° and 80°


6 0
3 years ago
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