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Illusion [34]
2 years ago
8

1. A point at (-4, 7) is rotated 90° clockwise about the origin.

Mathematics
1 answer:
kati45 [8]2 years ago
3 0

Answer:

(7, 4)

Step-by-step explanation:

The rule to rotate a point/figure 90° clockwise about the origin is (x, y) -> (y, -x). We are given the point as (-4, 7).

  • (-4, 7)
  • (7, -4)
  • (7, 4)  

Therefore, the answer is (7, 4).

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Help is very much needed. Please help meee outtt!!
Korvikt [17]

Answer:

22222222225555566666

3 0
3 years ago
explain what does the constant rate of change means in the context, (basically what is the meaning of a constant rate change.).
LUCKY_DIMON [66]

Here the topic is "functions."  Roughly speaking, we have a box.  Input enters at one end and output exists at the other.  Now, if every input value x (such as 2) is doubled by the box, every output value is 2x:  (0,0), (1,2), (2,4), etc.

We call this "doubling" a "constant rate of change.

If you plot the points given, you'll see that they all are on a straight line.  That straight line has the slope 2:  y = 2x.  Again, 2 is the "constant rate of change" here.

If you drive at a steady 55 mph, you are covering 55 miles during every hour behind the wheel.  Again, 55 is a "constant rate of change."


4 0
3 years ago
Read 2 more answers
Final exam scores are normally distributed with a mean of 74 and a standard deviation of 6. Approximately, what percentage of fi
notka56 [123]

Answer:

81.86%

Step-by-step explanation:

We have been given that final exam scores are normally distributed with a mean of 74 and a standard deviation of 6.

First of all we will find z-score using z-score formula.

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

z=\frac{68-74}{6}

z=\frac{-6}{6}=-1

Now let us find z-score for 86.

z=\frac{86-74}{6}    

z=\frac{12}{6}=2        

Now we will find P(-1<Z) which is probability that a random score would be greater than 68. We will find P(2>Z) which is probability that a random score would be less than 86.

Using normal distribution table we will get,    

P(-1

P(2>Z)=.97725  

We will use formula P(a to find the probability to find that a normal variable lies between two values.

Upon substituting our given values in above formula we will get,

P(-1

P(-1

Upon converting 0.81859 to percentage we will get

0.81859*100=81.859\approx 81.86

Therefore, 81.86% of final exam score will be between 68 and 86.  


3 0
3 years ago
Question 16 (5 points)
yulyashka [42]

Answer:

9x -45

Step-by-step explanation:

-9(-x + 5)

Distribute

-9* -x +-9*5

9x -45

7 0
3 years ago
Enter the correct answer in the box.<br> Write the expression (x4)8 in simplest form.
lukranit [14]

Answer:

x³²

Step-by-step explanation:

When raising exponents to another power, multiply the exponents given.

That means that:

(x⁴)⁸ = x⁽⁴⁾⁽⁸⁾ = x³²

8 0
2 years ago
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