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guapka [62]
3 years ago
5

Which of the following is an example of the distributive property?

Mathematics
1 answer:
lukranit [14]3 years ago
7 0

Answer:

option 3: 3(10+5) = 30+15

Step-by-step explanation:

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Please help me . I am trying to do cancellation but i am having trouble
qwelly [4]
In this question, you are only able to cancel out the (x + 5). The others are unable to be cancelled.
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3 years ago
When deriving the quadratic formula by completing the square, what expression can be added to both sides of the equation to crea
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Answer:

According to steps 2 and 4. The second-order polynomial must be added by -c and b^{2} to create a perfect square trinomial.

Step-by-step explanation:

Let consider a second-order polynomial of the form a\cdot x^{2} + b\cdot x + c = 0, \forall \,x \in\mathbb{R}. The procedure is presented below:

1) a\cdot x^{2} + b\cdot x + c = 0 (Given)

2) a\cdot x^{2} + b \cdot x = -c (Compatibility with addition/Existence of additive inverse/Modulative property)

3) 4\cdot a^{2}\cdot x^{2} + 4\cdot a \cdot b \cdot x = -4\cdot a \cdot c (Compatibility with multiplication)

4) 4\cdot a^{2}\cdot x^{2} + 4\cdot a \cdot b \cdot x + b^{2} = b^{2}-4\cdot a \cdot c (Compatibility with addition/Existence of additive inverse/Modulative property)

5) (2\cdot a \cdot x + b)^{2} = b^{2}-4\cdot a \cdot c (Perfect square trinomial)

According to steps 2 and 4. The second-order polynomial must be added by -c and b^{2} to create a perfect square trinomial.

7 0
2 years ago
Read 2 more answers
Work out (4.2×107)÷(7×104)Give your answer in standard form. Work out (4.2×107)÷(7×104)Give your answer in standard form.
professor190 [17]

Answer:

6 * 10^2

Step-by-step explanation:

Simplify : (4.2×10^7)÷(7×10^4)

(4.2 × 10^7) / (7 × 10^4)

From indices : 10^a ÷ 10^b = 10^(a - b)

(4.2 / 7) * 10^(7-4)

0.6 * 10^3

= 6 * 10^2

Hence, (4.2×10^7)÷(7×10^4) = 6 * 10^2

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3 years ago
HELPPPPPP!!!<br><br> Rule: y=x-1/4
Nimfa-mama [501]

Step-by-step explanation:

if x=1/4 then y=1/4-1/4=0

if x=13/4 then y=13/4-1/4=12/4=3

if x=2 then y=2-1/4=8/4-1/4=7/4=1 3/4

7 0
3 years ago
GI and JL are parallel lines.<br><br> Which angles are supplementary angles?
solmaris [256]

Answer:

The answer is A.

Step-by-step explanation:

A supplementary angles are angles that when adding both sides will sum up to 180 Degrees.

<JKH and <LKH will be the correct answer because they add up tp 180 degrees.

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3 years ago
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