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2 years ago

Which equations are true for x = –2 and x = 2? Check all that apply.

1 answer:

4 0

А. х²-4=0; х²=4; х=±2, true. B. x²=-4; there is no solution. C. 3x²+12=0; 3x²=-12; x²=-4; there is no solution. D. 4x²=16; x²=4; x=±2, true. E. 2(x-2)²=0; 2(x²-4x+4)=0; 2x²-8x+8=0; x²-4x+4=0; x1=2; x2=2. False. The answer: A, D.

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Given that the straight line 2x + 3y-10=0 intersects the x - axis at P. Find the

tino4ka555 [31]

Answer:

P(5, 0 )

Step-by-step explanation:

Where the line crosses the x- axis the y- coordinate of the point P is zero.

Substitute y = 0 into the equation and solve for x

2x + 3(0) - 10 = 0 , that is

2x - 10 = 0 ( add 10 to both sides )

2x = 10 ( divide both sides by 2 )

x = 5

Thus P = (5, 0 )

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2 years ago

Which shows two triangles that are congruent by ASA?

swat32

Step-by-step explanation:

it's ur answers I hope it's helpful..

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2 years ago

(5 - 7i)(8 + i)

docker41 [41]

Answer:

(5 - 7i)(8 + i)

F) 40 - 561

H) 37 - 371

K) -16 - 2i

G) -33 - 61i

J) 47 - 51i

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Step-by-step explanation:

7 0

1 year ago

Analyze the diagram below and complete the instructions that follow. the measure of SUT is twice m RUS if m RUS = (18x-8) and m

Hitman42 [59]

Is this a year 9 question and if yes I do not have a clue lol

4 0

2 years ago

Write the equation of a line that is perpendicular to y=-2/7x + 9 and that passes through the point (-4,6) [FP]

siniylev [52]

Answer:

$y=(7/2)x+20$

Step-by-step explanation:

SInce the gradient of the first line is $-2/7$ then the gradien of the perpendicular line is $7/2$.

Therefore by the point slope formula the line that we are looking for is

$y-6=(7/2)(x+4)$

$y=(7/2)x + 20$

7 0

2 years ago