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2 years ago

Fred solved the equation 8(3x – 7) = -6(x + 7) + 4 as shown.

Mathematics

1 answer:

OleMash [197]2 years ago

3 0

Answer: He added 4 to a negative 42 and said it was 46 but its supposed to simplify to -38. X=3/5

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What is (3/4)^-2 and how do I express it as a positive?

dedylja [7]

16/9 because (3/4)^-2 simplified is 16/9

7 0

3 years ago

The path of a high diver is given by y = −94x2 + 249x + 10 where y is the height in feet above the water and x is the horizontal

sammy [17]

Answer:

i dont know maybe someone else can help

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3 years ago

Coach Evans recorded the height, in inches of each player on his team. The results are shown.

marysya [2.9K]

Answer:

Step-by-step explanation:

Given:

Team heights (inches):

61, 57, 63, 62, 60, 64, 60, 62, 63

To find: IQRs (interquartile ranges) of the heights for the team

Solution:

A quartile divides the number of terms in the data into four more or less equal parts that is quarters.

For a set of data, a number for which 25% of the data is less than that number is known as the first quartile $(Q_1)$

For a set of data, a number for which 75% of the data is less than that number is known as the third quartile $(Q_3)$

Terms in arranged in ascending order:

$57,60,60,61,62,62,63,63,64$

Number of terms = 9

As number of terms is odd, exclude the middle term that is 62.

$Q_1$ is median of terms $57,60,60,61$

Number of terms (n) = 4

Median = $\frac{(\frac{n}{2})^{th} +(\frac{n}{2}+1)^{th} }{2} =\frac{2^{nd}+3^{rd}}{2} =\frac{60+60}{2}=\frac{120}{2}=60$

So, $Q_1=60$

So, 25% of the heights of a team is less than 60 inches

$Q_3$ is the median of terms $62,63,63,64$

Median = $\frac{(\frac{n}{2})^{th} +(\frac{n}{2}+1)^{th} }{2} =\frac{2^{nd}+3^{rd}}{2} =\frac{63+63}{2}=\frac{126}{2}=63$

So, $Q_3=63$

So, 75% of the heights of a team is less than 63 inches

Interquartile range = $Q_3-Q_1=63-60=3$

The interquartile range is a measure of variability on dividing a data set into quartiles.

The interquartile range is the range of the middle 50% of the terms in the data.

So, 3 is the range of the middle 50% of the heights of the students.

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2 years ago

DIVIDING POLYNOMIALS:

Dvinal [7]

Answer:

Step-by-step explanation:

6 0

2 years ago

A restaurant serves chicken, roast beef and pork chops as a choice of meats. For choice of potatoes a customer may choice baked,

NNADVOKAT [17]

Answer:

48 combination

Step-by-step explanation:

3 meals × 4 type of potato × 4 type of vegetables

hope this helps

have a nice day <3

6 0

2 years ago