3 years ago

If x = -2, then the equation is 2x = -4. True or False

Mathematics

1 answer:

Alex777 [14]3 years ago

6 0

Answer:

true

Step-by-step explanation:

2(-2)=-4

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Kiran and Mai are trying to figure out if this equation is an identity, what do you think

ValentinkaMS [17]

Expanding the left side of the equation, it is found that since both sides are equal, yes, it is an identity.

An equality represents an identity if both sides are equal.

In this problem:

$(a - b)^4 = a^4 - 4a^3b + 6a^2b^2 - 4ab^3 + b^4$

Expanding the left side:

$(a - b)^2(a - b)^2 = a^4 - 4a^3b + 6a^2b^2 + 4ab^3 + b^4$

$(a^2 - 2ab + b^2)(a^2 - 2ab + b^2) = a^4 - 4a^3b + 6a^2b^2 - 4ab^3 + b^4$

$a^4 - 4a^3b + + 6a^2b^2 - 4ab^3 + b^4 = a^4 - 4a^3b + 6a^2b^2 - 4ab^3 + b^4$

Since both sides are equal, yes, it is an identity.

A similar problem is given at brainly.com/question/24866308

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2 years ago

I don’t know I need help fast

Art [367]

Answer is B.

500 x 6 = 3000.

3000 in kilometers is 3.

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3 years ago

The line plot shows how many siblings each student has. how many more students have only one sibling than at least 3 siblings

Vaselesa [24]

So for this you must ignore the student with 2.

then you see how many in order

1-6 siblings
1-5 siblings
2-3 siblings

add up the left coulumn to get 4 people have more than 3 siblings

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4 years ago

−0.85 – (−1.9) +– 2.06

sveticcg [70]

Answer:

−1.01

Step-by-step explanation:

Simplify the expression!

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3 years ago

Read 2 more answers

Compare the triangles and determine whether they can be proven congruent by SSS, SAS, ASA, AAS, or HL. If not, type "NONE".

ivolga24 [154]

Answer:

SAS

Step-by-step explanation:

The triangles have two sides and one angle that are congruent.

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3 years ago