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AlladinOne [14]
3 years ago
9

Use FOIL to derive the identify for (a+b)^2.​

Mathematics
1 answer:
Firlakuza [10]3 years ago
3 0

Answer:

a^2+2ab+b^2

Step-by-step explanation:

FOIL method is First variables Outer variables Inner variables Last variables

(a+b)^2 rewritten is (a+b)(a+b)

F - a*a

O - a*b

I - a*b

L - b*b

a*a+a*b+a*b+b*b

simplify

a^2+2ab+b^2

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IrinaVladis [17]

Answer:

  • B. 0.78

Step-by-step explanation:

<u>With 22% decrease the value after the year is:</u>

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To find 78% we need to multiply the current value by 0.78.

The same number is multiplied each year to find the decreased value.

<u>The formula for the car would be:</u>

  • P = 4500*0.78ˣ

The decay factor is 0.78

Correct choice is B

6 0
3 years ago
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expeople1 [14]

Answer:

7 ( 3x + 5y) = <u>21x+35y</u>

<u>Step-by-step explanation:</u>

<u>Step 1 : </u> apply the distributive law. <u>("the law relating the operations of multiplication and addition")</u>

<em>a ( b + c ) = ab + ac</em>

7 ( 3x + 5y) = 7 x 3x + 7 x 5y

<u>Step 2 : simplify  </u>7 x 3x + 7 x 5y

So, the answer is <u>21x+35y</u>

Brainliest? :D and hope this helps!

Learn more about Distributive Property:

<u>brainly.com/question/2807928</u>

3 0
2 years ago
2/10 in whole number
Margaret [11]
\frac{2}{10}

you just divide 2 by 10, which is

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6 0
3 years ago
True or false: the output correspond to the vertical axis
liraira [26]

True the output or dependent variable is on the y (vertical) axis

5 0
3 years ago
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zheka24 [161]

Answer:

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Step-by-step explanation:

Since we only know the measure of the angles, we can only say the triangles are similar, not congruent.  We need at least one side measurement on each triangle to determine if the triangles are congruent.  And it would have to be the same side measurement.  Then we could use ASA (Angle side Angle) or AAS ( Angle Angle side) to determine congruence.

The triangles are similar

62+39 +79 = 180

The three angles are the same

<A = 62 = <X = 62

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3 years ago
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