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3 years ago

20 POINTS

Mathematics

1 answer:

Leya [2.2K]3 years ago

6 0

Answer:

It will be True

Hope it's help

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A game uses the two spinners shown in the image. What is the probability that you will spin "East" and "1"

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1/32 because 1/4 is the probability for the first one and then 1/8 for the next one. 4 times 8 = 32 so there is a 1 in 32 chance

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4 years ago

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The table of ordered pairs gives an exponential function.<br> Write an equation for the function.

Ray Of Light [21]

Answer:the function would be y=m+b

Step-by-step explanation:

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2 years ago

A car is traveling at a rate of 55 miles per hour . Let x=time in hours and y=number of miles . What is the equation that models

Orlov [11]

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The equation is miles = rate of travel * hours.

Let the rate of travel = k

Let the miles = y

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3 years ago

Write a rule for the linear function with the following description: the graph contains the points (3,-2) and (3,0),

Maslowich

Answer:

x - 3 = 0

Step-by-step explanation:

You can realise it plotting the points.

Or you can use : ( x - x1 ) / ( y - y1 ) = ( x1 - x2 ) / ( y1 - y2 )

where ( x1 , y1 ) and ( x2 , y2 ) are the given points.

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3 years ago

An English professor assigns letter grades on a test according to the following scheme. A: Top 15% of scores B: Scores below the

lisabon 2012 [21]

Answer:

59 to 66

Step-by-step explanation:

Mean test scores = u = 74.2

Standard Deviation = $\sigma$ = 9.6

According to the given data, following is the range of grades:

Grade A: 85% to 100%

Grade B: 55% to 85%

Grade C: 19% to 55%

Grade D: 6% to 19%

Grade F: 0% to 6%

So, the grade D will be given to the students from 6% to 19% scores. We can convert these percentages to numerical limits using the z scores. First we need to to identify the corresponding z scores of these limits.

6% to 19% in decimal form would be 0.06 to 0.19. Corresponding z score for 0.06 is -1.56 and that for 0.19 is -0.88 (From the z table)

The formula for z score is:

$z=\frac{x-u}{\sigma}$

For z = -1.56, we get:

$-1.56=\frac{x-74.2}{9.6}\\\\ x = 59$

For z = -0.88, we get:

$-0.88=\frac{x-74.2}{9.6}\\\\ x = 66$

Therefore, a numerical limits for a D grade would be from 59 to 66 (rounded to nearest whole numbers)

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4 years ago