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3 years ago

If x represents a number, then write an expression for one half the sum of x and 7.

Mathematics

1 answer:

Lostsunrise [7]3 years ago

4 0

Answer:

1/2(x+7)

Step-by-step explanation:

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A bowling alley and a skating rink both offer birthday party rentals. The bowling alley costs $5 per person plus a $15 room rent

Gala2k [10]

For example: if you chose to invite 10 people the skating rink would cost a total of $50 including the room fee

If you invite 10 people to the bowling alley you would spend $65 Including the room

The answer would be to choose the skating rink

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3 years ago

The graphs of f(x) =-2x and g(x)=(1/2)^z are shown

ELEN [110]

Answer:

f(x)-3x+5 and g(x)=4+5 is it true ?Step-by-step explanation:

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3 years ago

There are 7 acts in a talent show.

lara31 [8.8K]

Answer:

Event A: 1/35

Event B: 1/840

Explanation:

Event A

For the event A, the order of the first 4 acts does not matter.

The number of different four acts taken from a set of seven acts, when the order does not matter, is calculated using the concept of combinations.

Thus, the number of ways that the first four acts can be scheduled is:

$C(m,n)=\dfrac{m!}{n!(m-n)!}$

$C(7,4)=\dfrac{7!}{4!(7-4)!}=\dfrac{7!}{4!(3)!}=35$

And the number of ways that four acts is the singer, the juggler, the guitarist, and the violinist, in any order, is 1: C(4,4).

Therefore the probability of Event A is:

$P(A)=1/35$

Event B

Now the order matters. The difference between combinations and permutations is ordering. When the order matters you need to use permutations.

The number of ways in which four acts can be scheculed when the order matters is:

$P(m,n)=\dfrac{m!}{(m-n)!}$

$P(m,n)=\dfrac{7!}{(7-4)!}=P(m,n)=\dfrac{7!}{4!}=840$

The number of ways the comedian is first, the guitarist is second, the dancer is third, and the juggler is fourth is 1: P(4,4)

Therefore, the probability of Event B is:

$P(B)=1/840$

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4 years ago

For a given geometric sequence, the 9th term, a9, is equal to 43/256 and the 14th term, a14, is equal to 172. Find the value of

NeX [460]

Maybe solve by dividing. I think 5/6. Sorry math isn’t my strong suit. I’m good at reading.

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3 years ago

Find an angle between 0° and 360° that is coterminal with 538°.

Mars2501 [29]

To find a positive and a negative angle coterminal with a given angle, you can add and subtract if the angle is measured in degrees or if the angle is measured in radians

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3 years ago