3 years ago

Which is the line shown in the figure ? line XY line XZ line WX line WZ

Mathematics

1 answer:

forsale [732]3 years ago

8 0

Line XZ , i’m assuming you are talking about the line that goes through the shape ?

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If 3x - 2y = 9 , 27x³- 8y³= 1377 , prove that xy = 4 plzz answer this question...

solniwko [45]

Step-by-step explanation:

Here we are given that , the Value of

$3x - 2y = 9$
$27x^3 - 8y^3 = 1377$

And we need to find the prove that ,

$xy = 4$

We know a identity as ,

$(a-b)^3 = a^3-b^3-3ab(a-b)$

On cubing both sides of the given equation,

$(3x-2y)^3 = 9^3$

Simplify and then substitute ,

$27x^3-8y^3 -3(3x)(2y)(3x-2y ) = 729$

$1377 - 18xy (9) = 729$

$162xy = 1377-729$

$xy =\dfrac{648}{162}$

$xy = 4$

Hence Proved !

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3 years ago

Which of the following is not a congruence theorem or postulate A. ASA B. SSS C. SAS D. AAA

natka813 [3]

Answer:

D. AAA is not a congruence postulate

Step-by-step explanation:

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2 years ago

What is the value of a? A. 12 B. 15 C. 17.25 D. 21.25

dimaraw [331]

Answer:

C 17.25

Step-by-step explanation:

i think aanswer its c

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1 year ago

Solve the system of equations using elimination. SHOW WORK!!!!!!!!!!!!!

irinina [24]

q= 6

r= 7

work--

Multiply 1st column by -2:

-30q+8r=-124

5q+8r=86

Subtract 2nd column from the first column:

-35q= -210

Solve for q:

q=6

Subtract q=6 by any of the two equations, so:

-30q+8r=-124

-30*6+8r=-124

Solve for r:

r=7

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3 years ago

Read 2 more answers

Help me please, I’ll mark brainliest

Lesechka [4]

I know that
20. 15
21. 18

Good luck though I remember doing it

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3 years ago