3 years ago

Suppose a coin is tossed 100 times. about how many times would you expect to get heads?

Mathematics

1 answer:

klasskru [66]3 years ago

7 0

The coin should land on heads around 50 times

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BRAINLIEST ASAP solve for y -140=18+4(5y-2)

Elenna [48]

Answer:

Variable Y is equal to 7.5.

Step-by-step explanation:

First, open the brackets:

18 + 20y - 8 = -140

Second, subtract 18 and add 8 from/to both sides.

20y = -140 - 18 + 8

20y = -150

Third, divide by 20.

y = 7.5

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3 years ago

10) a =-1, r=-5, n= 9 A) -357162 B) -325521 C) -310366 D) -1/6

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2 years ago

If f(x) = 3x + 7, which of these is the inverse of f(x)?

dolphi86 [110]

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Step-by-step explanation:

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2 years ago

Triangle PQR has vertices at the following coordinates: P(0, 1), Q(3, 2), and R(5, -4). Determine whether or not triangle PQR is

ruslelena [56]

$PQ = \sqrt{(3-0)^2+(2-1)^2}= \sqrt{9+1}= \sqrt{10} \\ QR= \sqrt{(5-3)^2+(-4-2)^2}= \sqrt{4+36}= \sqrt{40} \\PR= \sqrt{(5-0)^2+(-4-1)^2}= \sqrt{25+25}= \sqrt{50}$

PR is the longest side.
The triangle will be right if
PQ² + QR² = PR²

PQ² + QR² = (√10)² + (√40)² = 10 + 40 = 50
PR² = (√50)² = 50
50=50 so, ΔPQR is a right triangle.

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2 years ago

Read 2 more answers

Help me plz branniest to whoever right

ValentinkaMS [17]

I’m sorry to use this but, you can’t have someone answer it if they don’t know the options for the answers :/

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3 years ago