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Alexxandr [17]
2 years ago
15

Let x= t+2 and y= t² Write an equation for y in terms of only X​

Mathematics
1 answer:
AURORKA [14]2 years ago
6 0

Answer:

y =  {x}^{2}  - 4x + 4[ /tex] Step-by-step explanation:[tex] x = t + 2 \\   \implies \: x - 2 = t....(1) \\  y =  {t}^{2} ....(2)  \\ plug \: t = x - 2 \: in \: equation \: (2) \\  y =  {(x - 2)}^{2}  \\  \red{ \bold{ y =  {x}^{2}  - 4x + 4}}

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According to the National Education Association (NEA), teachers generally spend more than 40 hours each week working on instruct
abruzzese [7]

Answer:

The median number of hours worked per week for the sample of 13 high school science teachers is 52.

Step-by-step explanation:

Median of a data set:

The median of a data set is the element that separates the lower 50% of the set from the upper 50%.

If the cardinality n of the set is odd, the median is the element at the position (n+1)/2 of the sorted sed.

If the cardinality n of the set is even, the median is the mean between the elements at the position n/2 and (n/2)+1 of the sorted sed.

In this question:

Hours worked for the sample of 13 high school science teachers:

55, 58, 52, 52, 56, 59, 48, 63, 52, 52, 50, 52, 56

Sorting in an ascending way:

48, 50, 52, 52, 52, 52, 52, 55, 56, 56, 58, 59, 63

Cardinality of 13, so odd, the median is the element at the 13+1/2 = 7th position of the sorted set, which is 52.

The median number of hours worked per week for the sample of 13 high school science teachers is 52.

8 0
3 years ago
PLSSSSSSSSSSSSSSS HELP pls
sertanlavr [38]

{\qquad\qquad\huge\underline{{\sf Answer}}}

Let's solve ~

\qquad \sf  \dashrightarrow \: 10x + 30 = 90

[ according to given figure ]

\qquad \sf  \dashrightarrow \: 10x = 90 - 30

\qquad \sf  \dashrightarrow \: 10x = 60

\qquad \sf  \dashrightarrow \: x = 60 \div 10

\qquad \sf  \dashrightarrow \: x = 6 \degree

Correct choice is D

7 0
1 year ago
In 15–20, write the number positioned at each point.
Mumz [18]

Answer:

See below.

Step-by-step explanation:

15.) -3.25

16.) -4.5

17.) 1.25

18.) -5.75

19.) 0.5

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a bag contains 4 red, 3 orange and 5 purple marbles. what is the probability of drawing 2 purple marbles in a row without replac
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Step-by-step explanation: this one is for zack!!!!!!!!!

5 0
3 years ago
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Where is the hundred thousand place
ozzi
The 6th to the left

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2 years ago
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