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Ipatiy [6.2K]
3 years ago
12

What are the coordinates of the image of the point (-2, 8) when rotated 180 degrees around the origin?

Mathematics
1 answer:
PSYCHO15rus [73]3 years ago
3 0

Answer:

C) (2, -8)

Step-by-step explanation:

The rule for a 180 degree rotation is negating both coordinates (making both x and y the opposite sign)

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A dentist polls his patients and finds that 83 percent brush their teeth at least twice a day, 47 percent floss daily, and 19 pe
puteri [66]

Answer:

The correct option is B. 23%

Step-by-step explanation:

Let the event that patient brushes his teeth at least twice a day is denoted by A

So, P(A) = 0.83

Let the event that patient flosses daily is denoted by B

So, P(B) = 0.47

Now, it is given that 19 percent patients brush at least twice a day and floss daily.

⇒ P(A and B) = 0.19

Now, we need to find conditional probability of occurring event B given A has occurred.

\implies P(B|A) =\frac{P(A\: and\: B)}{P(A)}\\\\\implies P(B|A) = \frac{0.19}{0.83}\\\\\implies P(B|A) = 0.2289\approx 0.23

Hence, Nearest required percentage = 23%

Therefore, The correct option is B. 23%

4 0
3 years ago
Read 2 more answers
F(x) = 4x² – 17x+3
Svet_ta [14]

Answer:

discriminant: 241

2 real roots

Step-by-step explanation:

The discriminant is the part of the quadratic equation that is under the sqare root

x=(-b±√(b²-4ac))/2a

discriminant: b²-4ac

We also know that a quadratic equation is in the form ax²+bx+c = 0, so we can plug in the values we know from our equation to find the discriminant.

a=4

b=-17

c=3

(-17)^2-4(4)(3)

We also know that if the discriminant

is positive we have 2 real roots

is 0 we have 1 real root aka a repeated real solution

is negative we have no real roots

8 0
3 years ago
2. A triangle has sides of lengths 15, 23, and 28. Is it a right triangle? Explain.
Gelneren [198K]

Answer:

Step-by-step explanation:

A question on a math quiz asks, "What is 175% of 72?" Petra calculates 12.6 as the answer. Is this a reasonable answer? Explain

6 0
3 years ago
Find the 8th term of the geometric sequence 10, -40, 160, ...
Elenna [48]

Answer:

hgfgbffvghgdv check g tunic

3 0
3 years ago
What is the simplified form of the quantity of x plus 7, all over 2 − the quantity of x plus 4, all over 2
pychu [463]
X + 7/2 = 3 x+1/2
x + 4/2 = 2 x/2
4 0
3 years ago
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