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just olya [345]
3 years ago
6

Which of the following is NOT NECESSARILY TRUE?

Mathematics
1 answer:
vovikov84 [41]3 years ago
5 0

Answer:I believe the answer is ab is equal to ba

Step-by-step explanation:

You might be interested in
What is the value of x?<br> A.2<br> B.3<br> C.6<br> D.7
Ira Lisetskai [31]

Answer:

A

Step-by-step explanation:

Given 2 secants from a point outside the circle.

Then the product of the external part and the entire secant of one secant is equal to the product of the external part and the entire secant of the other secant, that is

(x + 1)(x + 1 + 11) = (x + 4)(x + 4 + 1)

(x + 1)(x + 12) = (x + 4)(x + 5) ← expand both sides

x² + 13x + 12 = x² + 9x + 20 ← subtract x² + 9x from both sides

4x + 12 = 20 ( subtract 12 from both sides )

4x = 8 ( divide both sides by 4 )

x = 2 → A

3 0
4 years ago
Can anybody help me with this one plz.
Svetradugi [14.3K]
(-1,1)
D0 means starting at the origin of Z in this case, so doing the same thing as always, multiply the scale factor -1/2 to the coordinate of Z giving you (-1,1) and this is the final answer because the origin is (0,0) so doesn’t change anything
7 0
3 years ago
How many whole numbers between 99 and 999 contain the digit '1'?
Sedbober [7]

Answer:

162

Step-by-step explanation:

The number with "1" digit starts with 101 then 110 and so on.

6 0
3 years ago
Read 2 more answers
What is the sum of 3(x + 3) and -2(x - 5)?<br> A. X-2<br> B. x-1<br> C. X + 8<br> D. X + 19
Umnica [9.8K]
The answer is actually d lol the idiot above me was right
7 0
3 years ago
Kkkkkkkkkkkkkkkkkkkkkkkk
Aloiza [94]
The formula for slope is y = mx + b
y is the y value, m is the slope, x is the x value, and b is the y intercept.

The equation given for line e is
y = \frac{ - 9}{2} x + 7
Therefore the slope of line e is -9/2
Line f is parallel and parallel lines have the same slope.

So the slope is line f is -9/2.

The picture isn't that clear and I can't really tell if it's-9/2 or 9/2.
But whatever it is, the slope of line f is the same as the slope of line e because they are parallel.
Good luck!
8 0
4 years ago
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