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3 years ago

Question 5 Unsaved Factor the 4 term polynomial using grouping: 20xy - 4y + 35x - 7 Question 5 options:

Mathematics

1 answer:

natulia [17]3 years ago

4 0

Consider the expression $20xy - 4y + 35x - 7.$ Group first two terms and second two terms:

$20xy - 4y + 35x - 7=(20xy - 4y) + (35x - 7).$

In first brackets the common factor is $4y$ and in second brackets the common factor is $7.$

Then

$(20xy - 4y) + (35x - 7)=4y(5x-1)+7(5x-1)=(5x-1)(4y+7).$

Answer: correct choice is A.

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horrorfan [7]

Answer:

<h2>4th option: 19 units2 </h2>

Step-by-step explanation:

<h3>The given figure can be divided as (i) upper rectangle, (ii) lower rectangle </h3>

Then,

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Length of upper rectangle = 8 - 1 = 7 units

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Area of the upper rectangle = 7 × 2 = 14 units2

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3 years ago

Translate: 7p. Select all that apply. *

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2 years ago

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The sides of a triangle are x,x+1,2x-1 and its area is x root 10. Find the value of x

Marianna [84]

You can use Heron's formula to solve this problem.

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According to conditions:
a = x
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Calculate the semiperimeter:
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Now we can compose and solve the equation according to Heron's formula:
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As a result, x = 6 is your answer.

I hope this helped.

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