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3 years ago

Please Help...........................................................

Mathematics

2 answers:

MrRa [10]3 years ago

4 0

The slope of any horizontal line is 0

astra-53 [7]3 years ago

4 0

The slope of this line is x=2. The points on the graph show (0,2) and (7,2). They both share the same y value and the line parallels the x axis. If it parallels the x axis, then it must be x=__.

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A class’s test scores are normally distributed if the average score 60 and the standard deviation is 7 choose the spots where th

Brrunno [24]

Answer:

Step-by-step explanation:

We are given that a class's test scores are normally distributed with an average score of 60.

We know that the curve of a normal distribution is symmetric about its mean.

60-14=46

60+14=74

Hence, the point 46 lies to the left of the mean and 74 lies to the right of the mean, and the two points have the same function value.

5 0

2 years ago

Read 2 more answers

Ruth has 7 more brown pencils than blue pencils, and 11 more blue pencils than red pencils. She has 5 red pencils. How many brow

olya-2409 [2.1K]

Answer: There are 5 red pencils, 16 blue pencils and 23 brown pencils.

Step-by-step explanation:

Since we have given that

Number of red pencils = 5

Number of blue pencils are 11 more than red pencils.

So, Number of blue pencils would be

$11+5=16$

Number of brown pencils are 7 more than blue pencils.

So, number of brown pencils would be

$16+7=23$

Hence, there are 5 red pencils, 16 blue pencils and 23 brown pencils.

8 0

3 years ago

Tom bought 3 adult movie tickets and 8 child tickets. If adult tickets cost $9.00 each and child tickets cost $5.00, what is the

defon

Answer:

the total cost is $67

Step-by-step explanation:

9 × 3 = 27 8 × 5 = 40 40 + 27 = $67

5 0

3 years ago

If a car has tires with a diameter of 28 inches and is traveling at 55 mph, how fast are its tires spinning, in rpm^ prime s (re

Aleksandr-060686 [28]

Answer:

The tires are spinning at 660.49 revolutions per minute.

Step-by-step explanation:

The speed of the tires (v) is the same that the speed of the car, so to find the angular velocity of the tires we need to use the equation:

$\omega = \frac{v}{r}$

Where:

r: is the radius of the tires = d/2 = 28 inches/2 = 14 inches

$\omega = \frac{55 mph}{14 inches*\frac{1 mile}{63360 inches}} = 2.49 \cdot 10^{5} \frac{rad}{h}*\frac{1 h}{60 min}*\frac{1 rev}{2\pi rad} = 660.49 rpm$

Therefore, the tires are spinning at 660.49 revolutions per minute.

I hope it helps you!

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3 years ago

The reference angle for 5pi/4 is 1, which has a terminal point of

maxonik [38]

Answer:

Step-by-step explanation:

8 0

1 year ago