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RideAnS [48]
1 year ago
10

Helppp I need an answer fast

Mathematics
1 answer:
laila [671]1 year ago
8 0

Answer:6

Step-by-step explanation: PQRS is 2x the size of ABCD

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If f(x) = x2 and g(x) =1/ 2x+3, find g(f(-1)).
Dvinal [7]
-1=1/2x+3
2=1/2x
(2)2=1/2x(2)
4=x
Answer: x=4
5 0
3 years ago
Which number line represents the solution set for inequality?
AlekseyPX

Answer:

Third graph down

Step-by-step explanation:

2x -6 ≥ 6(x-2)+8

Distribute

2x - 6≥6x -12+8

Combine like terms

2x - 6≥6x -4

Subtract 2x from each side

2x-6-2x ≥6x-2x-4

-6 ≥4x-12

Add 4 to each side

-6+4 ≥4x-4+4

-2 ≥4x

Divide by 4

-2/4 ≥4x/4

-1/2≥x

Closed circle at -1/2

Line going the the left

8 0
3 years ago
Number of passengers who arrive at the platform in an Amtrack train station for the 2 pm train on a Saturday is a random variabl
Svetradugi [14.3K]

Answer:

P(80

And we can find this probability with this difference:

P(-4

And in order to find these probabilities we can use tables for the normal standard distribution, excel or a calculator.  

P(-4

Step-by-step explanation:

Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".  

Solution to the problem

Let X the random variable that represent the number of passengers who arrive at the platform of a population, and for this case we know the following info

Where \mu=180 and \sigma=25

We are interested on this probability

P(80

For this case we can assume that the random variable is normally distributed.

And the best way to solve this problem is using the normal standard distribution and the z score given by:

z=\frac{x-\mu}{\sigma}

If we apply this formula to our probability we got this:

P(80

And we can find this probability with this difference:

P(-4

And in order to find these probabilities we can use tables for the normal standard distribution, excel or a calculator.  

P(-4

5 0
3 years ago
Find the total area surface of figure​
Neporo4naja [7]

Answer:

92 \:cm^2

Step-by-step explanation:

Surface\:_{area}=2\times(\ell\times w +\ell \times h + w \times h)

=2\times(8 \times 2 +8 \times 3 + 2 \times 3)

=2 \times (16+24+6)

=2\times 46

=92\: cm^2

5 0
2 years ago
Read 2 more answers
The given term is 6n-38,<br> can u find the first four terms in the sequence
Hunter-Best [27]

Answer:

- 32, - 26, - 20, - 14

Step-by-step explanation:

To find the first 4 terms , substitute n = 1, 2, 3, 4 into the rule

a₁ = 6(1) - 38 = 6 - 38 = - 32

a₂ = 6(2) - 38 = 12 - 38 = - 26

a₃ = 6(3) - 38 = 18 - 38 = - 20

a₄ = 6(4) - 38 = 24 - 38 = - 14

3 0
2 years ago
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