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3 years ago

Cuanto es 7x + 8 = 10 -4x ayuda por favooor se los agradezcooo

Mathematics

1 answer:

goblinko [34]3 years ago

4 0

Answer:

= 2/11

Step-by-step explanation:

sry i dont speak your language hope this

helps

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IS 10×1000 a multiplication fact?

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Use the identity (x+y)(x−y)=x2−y2 to find the difference of two numbers if the sum of the numbers is 12 and the difference of th

Natalka [10]

Answer:

The difference of two numbers using identity $(x+y)(x-y)=x^2-y^2$ is 4.

Step-by-step explanation:

Given: The sum of the numbers is 12 and the difference of the squares of the numbers is 48.

To find the difference of two numbers using identity $(x+y)(x-y)=x^2-y^2$

Let the two numbers be a and b, then

Given that the sum of the numbers is 12

that is a + b = 12 .........(1)

Also, given the difference of the squares of the numbers is 48.

that is $a^2-b^2=48$ ..........(2)

Using given identity $(x+y)(x-y)=x^2-y^2$

We have $(a+b)(a-b)=a^2-b^2$

Substitute the known values, we have,

$12(a-b)=48$

Divide both side 12 , we have,

$(a-b)=4$

Thus, the difference of two numbers using identity $(x+y)(x-y)=x^2-y^2$ is 4.

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4 years ago

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Please help ASAP.<br> What is the length os side BC of the triangle

Nuetrik [128]

nswer:

B C = 24

Explanation:

The triangle is isosceles, because (from the diagram) ∠ A B C = ∠ A C B - note how the angle there is marked on both of these. If these angles are equal, this means that the sides

A C = A B

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x +8=2x-1

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3 years ago

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Answer:

the nearest whole number is 8

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3 years ago