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3 years ago

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Josh kept 75% of the ride tickets he bought at a carnival and gave the rest to his friend Sam. Sam gave 50% of these tickets to

Rob. If Rob was given 3 tickets, how many tickets did Josh buy?

1 answer:

galina1969 [7]3 years ago

7 0

Do percent over 100 and then cross multiply and you should receive your answer.
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The sum of the base and height of a triangle is 14 cm. Which of the following equations could be used to find the maximum area o

Montano1993 [528]

Answer:

B

Step-by-step explanation:

Let the base of the triangle be <em>b</em> and the height be <em>h</em>.

The sum of the base and height is 14. Thus:

$b+h=14$

Recall that the area of a triangle is given by:

$\displaystyle A=\frac{1}{2}bh$

From the first equation, solve for either variable:

$h=14-b$

Substitute:

$\displaystyle A=\frac{1}{2}b(14-b)$

Distribute:

$\displaystyle A=\frac{1}{2}(14b-b^2)$

Distribute:

$\displaystyle A=-0.5b^2+7b$

Let <em>b</em> = <em>x</em>. Hence:

$A=-0.5x^2+7x$

Therefore, our answer is B.

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3 years ago

Help I need help with thees two answers I can't find the answer

DENIUS [597]

Answer:first one is 2.8, second is 3.9

Step-by-step explanation:

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3 years ago

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Solve for y. 40 = 25y Simplify your answer as much as possible.

Romashka [77]

Mark me as the brainliest

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3 years ago

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Name a pair of opposite rays on plane L.

solmaris [256]

Answer:

GC and GD

Step-by-step explanation:

The only points on plane L are: J, C, G, D

GC and GD

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1 year ago

In a recent study on world happiness, participants were asked to evaluate their current lives on a scale from 0 to 10, where 0

vlabodo [156]

Complete Question

The complete question is shown on the first uploaded image

Answer:

a

$P(X < 4) = 0.4141$

b

$P(4 < X < 6) = 0.32876$

c

$P(X >8) = 0.064037$

d

The correct option is B

Step-by-step explanation:

From the question we are told that

The mean is $\mu = 4.5$

The standard deviation is $\sigma = 2.3$

Generally the probability that a randomly selected study participant's response was less than 4 is mathematically represented as

$P(X < 4) = P(\frac{X - \mu }{\sigma} < \frac{4 - 4.5}{ 2.3} )$

$\frac{X -\mu}{\sigma} = Z (The \ standardized \ value \ of\ X )$

So

$P(X < 4) = P(Z < -0.217 )$

From the z-table $P(Z < -0.217 ) = 0.4141$

So

$P(X < 4) = 0.4141$

Generally the probability that a randomly selected study participant's response was between 4 and 6 is mathematically represented as

$P(4 < X < 6) = P( < \frac{4 - 4.5}{ 2.3} < \frac{X - \mu }{\sigma} < \frac{6 - 4.5}{2.3})$

=> $P(4 < X < 6) = P( \frac{4 - 4.5}{ 2.3} < \frac{X - \mu }{\sigma} < \frac{6 - 4.5}{2.3})$

=> $P(4 < X < 6) = P( -0.217 < Z< 0.6522$

=> $P(4 < X < 6) = (Z< 0.6522) -P( Z < -0.217)$

From the z-table

$(Z< 0.6522) = 0.74286$

So

$P(4 < X < 6) = 0.74286 -0.4141$

=> $P(4 < X < 6) = 0.74286 -0.4141$

=> $P(4 < X < 6) = 0.32876$

Generally the probability that a randomly selected study participant's response was more than 8 is mathematically represented as

$P(X > 8) = P(\frac{X - \mu }{\sigma} > \frac{8 - 4.5}{ 2.3} )$

$P(X > 8) = P(Z > 1.52174 )$

From the z-table $P(Z > 1.52174 ) = 0.064037$

So

$P(X >8) = 0.064037$

5 0

3 years ago