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3 years ago

Geometry(please help on 1 and 2)

Mathematics

1 answer:

wel3 years ago

8 0

Answer:

1. C

2. B

Step-by-step explanation:

1. Remember your rules for rotating. When you're rotating 180 degrees (x,y) --> (-x,-y), this means that you flip your signs. So for example, (10, -3) turns into (-10, 3) the only thing you're changing are your signs.

2. Once again, remember your rules for rotating. When rotating 90 degrees clockwise flip your x and y, and change the sign of x. So (x,y) --> (y, -x). So for example, (13, 5) --> (-5, 13)

At the end of the day, this all comes down to knowing your rules and practicing. I promise you it gets easier. Good luck!

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Which sets of ratios are a proportion? (Choose all that apply) *

vladimir1956 [14]

Answer:

<h2>Sets of Ratios that are Proportion</h2>

3/11 and 17/6

60/55 and 7/25

7/6 and 52/48

<h3>Solution:</h3>

> 12/7 and 36/21

$\frac{12}{7} = \frac{36}{21} \\ 12(21) = 36(7) \\ 252 = 252$

> 4/10 and 8/20

$\frac{4}{10} = \frac{8}{20} \\ 4(20) = 8(10) \\ 80 = 80$

5 0

3 years ago

PLEASE HELP!!!!

Bogdan [553]

Answer:

Step-by-step explanation:

We would apply the formula for binomial distribution which is expressed as

P(x = r) = nCr × p^r × q^(n - r)

Where

x represent the number of successes.

p represents the probability of success.

q = (1 - r) represents the probability of failure.

n represents the number of trials or sample.

From the information given,

p = 18% = 18/100 = 0.18

q = 1 - p = 1 - 0.18

q = 0.82

n = 5

Therefore,

P(x ≤ 2) = p(x = 0) + p(x = 1) + p(x = 2)

P(x = 0) = 5C0 × 0.18^0 × 0.82^(5 - 0)

P(x = 0) = 0.37

P(x = 1) = 5C1 × 0.18^1 × 0.82^(5 - 1)

P(x = 1) = 0.41

P(x = 2) = 5C2 × 0.18^2 × 0.82^(5 - 2)

P(x = 2) = 0.18

Therefore,

P(x ≤ 2) = 0.37 + 0.41 + 0.18 = 0.96

5 0

2 years ago

The base of an isosceles triangle is parallel to the x-axis. The y-axis passes through an end point of the base. If the endpoint

AnnyKZ [126]

The first x coordinate is given by 0 and the second one is given as j. So the length of the base is j. (Sometimes in math they give letters rather than numbers. And since you know it is an isosceles then the other vertex should be at x-coordinate half j or j/2.

5 0

2 years ago

PLEASE HELP ME!

algol13

Step-by-step explanation:

$1.\sum_{i=1}^{5}3i$