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VladimirAG [237]
2 years ago
15

Choose the graph that matches the inequality ­ y < –2x + 4.

Mathematics
2 answers:
Dafna1 [17]2 years ago
5 0

Answer:

I belive this would be C

Step-by-step explanation:

IceJOKER [234]2 years ago
4 0

Answer:

C

Step-by-step explanation:

You know that if its < or >, the line is - - - -, not a fully dark line.

So it would be either A or C

Plot in some numbers for x

Less than would be to the left.

So it wouldn't be A, leaving us with C

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3 years ago
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The sum of a whole number and twice its square is 21. Find the whole number
I am Lyosha [343]
SOLUTION:

Let whole number = x

x + 2x^2 = 21

2x^2 + x - 21 = 0

2x^2 + 7x - 6x - 21 = 0

x ( 2x + 7 ) - 3 ( 2x + 7 ) = 0

( 2x + 7 ) ( x - 3 ) = 0


2x + 7 = 0

2x = - 7

x = - 7 / 2

OR

x - 3 = 0

x = 3


ANSWER:

Therefore, as 3 is a whole number while - 7 / 2 isn't a whole number, the whole number must be 3.

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6 0
3 years ago
. Evaluate each of the following without using a calculator. Show all steps clearly. - 5^2​
Verizon [17]

Answer:

25

Step-by-step explanation:

-5^2 expanded is  -5 x -5

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7 0
2 years ago
Using a white-board with graph paper or graphing technology such as Geogebra be able to perform a reflection for a pre-image ove
Marta_Voda [28]

Explanation:

The line of reflection is the perpendicular bisector of the segment joining a point with its reflected image.

___

The segment joining a point with its reflection is as short as possible consistent with the requirement that the reflected point be the same distance from the line that the original is. That means it is perpendicular to the line of reflection. Since the distance from that line is the same on either side, the line of reflection bisects the joining segment.

7 0
3 years ago
In parallelogram ABCD, DB =28 cm. AN and CM are perpendicular to BD. AN = CM =10 cm. Find the area of the parallelogram.
tatiyna

Answer: 280 cm

Step-by-step explanation:

The base of each of the congruent triangles ABD and CBD is BD= 28 cm. The height of each is the perpendicular 10cm.

A=(2)(bh/2) works out to A= bh since the 2/2 cancel

So 10cm × 28cm = 280cm²

4 0
3 years ago
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