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Minchanka [31]
3 years ago
5

Which expressions are equivalent to −1.3 (−4.9) (−2.6)−1.3 (−4.9) (−2.6) ? select each correct answer. −1.3−(4.9 2.6)−1.3−(4.9 2

.6) −(1.3 4.9 2.6)−(1.3 4.9 2.6) −1.3 (4.9 2.6)−1.3 (4.9 2.6) −(1.3−4.9) (−2.6)
Mathematics
2 answers:
svet-max [94.6K]3 years ago
4 0
I think the correct answer from the choices listed above is the third option. The expression that is equivalent to −1.3 (−4.9) (−2.6) would be  −1.3 (4.9 2.6). Hope this answers the question. Have a nice day. Feel free to ask more questions. Thank you.
zhuklara [117]3 years ago
3 0

I just took the test. For K12 first attempt here are the answers:

1.Which expression is equivalent to −1.3+(−4.9)+(−2.6) ?

C. −1.3−(4.9+2.6)

2.Which expression is equivalent to −40+(−20)+(−60) ?

D.−20+(−40)+(−60)

3.Select from the drop-down menu to correctly identify the property shown.

0.8+(1.2+(−3))=(0.8+1.2)+(−3)

(Associative property)

4.Select from the drop-down menu to correctly identify the property shown.

−7.1+(−4.8)+(−1.9)=−4.8+(−7.1)+(−1.9)

(Commutative property)

5.Use properties of addition to evaluate the expression.

−92+(−47)+(−8)

Enter your answer in the box.

Answer: -147

I hope this helps -w-

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The inequality for the graph and please answer quickly
Marizza181 [45]

Answer:

x ≥ 1

Step-by-step explanation:

  1. The circle is over 1
  2. The circle is closed (filled in), which means it will be either ≤ or ≥.
  3. The arrow is pointing right, so it's ≥.
  4. The number can be represented by x
  5. Put it together: x ≥ 1

I hope this helps!

3 0
4 years ago
The given line passes through the points (0, −3) and (2, 3).
Alex

Answer:

The equation would be y + 1 = 3(x + 1)

Step-by-step explanation:

In order to find the equation of this line, we have to use the slope formula to find the slope.

m (slope) = (y2 - y1)/(x2 - x1)

m = (3 - -3)/(2 - 0)

m = (3 + 3)/(2 - 0)

m = 6/2

m = 3

Now that we have that, we can use it along with the second point to put into the point-slope equation.

y - y1 = m(x - x1)

y - -1= 3(x - -1)

y + 1 = 3(x + 1)

6 0
4 years ago
Which point lies on the circle represented by the equation (x+5) + (y-9) = 8
olga_2 [115]

Answer:

(-5,9+√8)

Step-by-step explanation:

There are two ways in which you can find a point that lies in the circle. One of them is to do y the subject of the formula, and another one is to determine the center of the circumference, and with the information of the radius, you can sum this value upward or downward.

the general equation of a circle is:

(x-h)^2+(y-k)^2=r^2

with center at (h,k)

you have the following equation:

(x+5)^2+(y-9)^2=8\\\\h=-5\\\\k=9\\\\r=\sqrt{8}

Then, the center is (-5,9)

if you sum the value of the radius in one of the fourth directions (up, down, left, right), for example upward you have

(-5,9+r)=(-5,9+\sqrt{8})

Then, one point that lies in the circle is (-5,9+√8)

3 0
3 years ago
If (a+bi)^2=2abi, what must be the relationship between a and b? Show or explain your reasoning.
Klio2033 [76]
(a+bi)^2 =(a+bi)(a+bi)= a^2 +2abi+b^2 i^2 \\  \\ i^2 = -1 \\  \\ (a+bi)^2 = a^2-b^2 +2abi = 2abi \\  \\ a^2 -b^2 = 0 \\  \\ a^2 = b^2 \\  \\ a = b

For the statement to be true, 'a' and 'b' must be equal

*First expand the binomial using FOIL, then set it equal to whats given "2abi".
Then you can find the relationship between a and b.
6 0
3 years ago
A.1.5
telo118 [61]

Answer:

x=50 y=10

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
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