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otez555 [7]
3 years ago
9

Point A' is the image of point A when point A is rotated about the origin B. What angle in the counterclockwise direction is

Mathematics
1 answer:
Elza [17]3 years ago
8 0

9514 1404 393

Answer:

  90° CCW

Step-by-step explanation:

The slope of BA is -1/3. The slope of BA' is 3, so the slopes are opposite reciprocals of one another. These segments are perpendicular, meaning the angle between them is 90°.

Point A' has been rotated 90° CCW about point B.

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Evaluate 15/r-1 when r=5
DochEvi [55]

Answer: 15/5=3 3-1= 2

The answer would be 2. :P



6 0
3 years ago
Read 2 more answers
Someone please answer this correctly!!
Luda [366]

Answer:

1.98 × 10^10

Step-by-step explanation:

First solve for how many text messages were sent out per one month:

22,000,000 × 900

19,800,000,000

Convert into scientific notation:

1.98 × 10^10

In scientific notation, there can only be one number before the decimal. The rest of the numbers must be after the decimal; hence, why I put the numbers 9 and 8 after the decimal. If the rest of the numbers are zeros, you do not have to add them after the decimal. Instead, starting from right to left, count the number places until you reach your decimal. The number you have counted will be your exponent. I counted nine 0's, one 8, and one 9 which made this exponent 10 as there were 10 decimal placements.

6 0
3 years ago
Write the equation of a line whose slope is 2/3 and crosses the y axis at (0, -5)
postnew [5]

The equation of line with slope 2/3 and crosses the y axis at (0, -5) is:

y=\frac{2}{3}x-5

Step-by-step explanation:

We will use the slope intercept form of the equation to make an equation of the given line

The slope-intercept form is:

y=mx+b

Here m is the slope and b is the y-intercept

Given

m = 2/3

Putting the value of slope

y=\frac{2}{3}x+b

The y intercept is -5 so we will put in the equation

y=\frac{2}{3}x-5

The equation of line with slope 2/3 and crosses the y axis at (0, -5) is:

y=\frac{2}{3}x-5

Keywords: Equation of line, slope-intercept form

Learn more about equation of line at:

  • brainly.com/question/10940255
  • brainly.com/question/10941043

#LearnwithBrainly

7 0
4 years ago
-3(-5x+2)+x-3=39 solve for x
Misha Larkins [42]

Answer:

the value of x = 3

Step-by-step explanation:

-3 (-5x+2)+x-3=39

open the bracket by multiply each by -3

15x-6+x-3=39

collect the like terms

16x-9=39

16x=39+9

16x=48

divide both sides by 16

x=3

mark me as brainliest pllyyyyzzz

4 0
3 years ago
My dog had some bones then he dug up 367 bone now he has 860 bones how many bones did he start with
weqwewe [10]
X + 367 = 860
x = 860 - 367 
x = 493
The dog had 493 bones to start with.
5 0
4 years ago
Read 2 more answers
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