2 years ago

How do i solve this ?

Mathematics

1 answer:

MariettaO [177]2 years ago

8 0

Answer:

20 (im pretty sure)

Step-by-step explanation:

all angles should equal 360 so add them together and you get 340 so find what's missing—20

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1608.5 rounded to the nearest tenths place

denis23 [38]

Answer:1608.5

Step-by-step explanation:

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2 years ago

What is the value of x?

Inessa05 [86]

3x-14=4x-9
-4x -4x
-x-14=-9
-14 -14
-x=-15
-x/-1=-15/-1
x=15
Sorry if this is a bit confusing, but I hope I helped

5 0

3 years ago

Fill in the blank.<br>(x+a) (x+b) = (___) (___)

Inga [223]

Answer:

(x+a) (x+b)=x(x+b)+a(x+b)=x²+bx+ax+ab=x²+x(a+b)+ab

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2 years ago

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For the line 2x+ 3y=6, the x-intercept is ____ and the y-intercept is ____.

Reptile [31]

Answer:

2 and 3

Step-by-step explanation:

the x-intercept is 2

the y-intercept is 3

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2 years ago

Prove the polynomial identity.

aleksandr82 [10.1K]

Explanation:

Since we have given that

$(2x+1)^2-2(2x+1)$

Now, we have to prove it as

$(2x+1)(2x-1)$

Now, start the iterations:

$(2x+1)^2-2(2x+1)\\\\=4x^2+1+4x-4x-2\\\\=4x^2+1-2\\\\=4x^2-1\\\\=(2x)^2-1\\\\=(2x+1)(2x-1)$

So, first blank will be filled with

$4x^2+4x+1$

Second blank will be filled with

$4x^2-1$

Hence proved.

7 0

3 years ago