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3 years ago

Multiply (2a-5)(4a-7) Simplify your answer

Mathematics

2 answers:

Pie3 years ago

7 0

$(2a - 5)(4a - 7)$

$2a(4a - 7) - 5(4a - 7)$

$8 {a}^{2} - 14a - 20a + 35$

$8 {a}^{2} - 34a + 35$

FrozenT [24]3 years ago

5 0

Step-by-step explanation:

( 2a - 5 ) ( 4a - 7 )

2a ( 4a - 7) - 5 ( 4a - 7 )

8a² - 14a - 20a + 35

8a² -34a + 35

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2(5-8x-9x)+4(7x+7)=14

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Step-by-step explanation:

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3 years ago

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kipiarov [429]

How to get answer by Mimiwhatsup (In Decimal Form):

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3 years ago

I need help with this one

antiseptic1488 [7]

Answer:

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Step-by-step explanation:

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3 years ago

Which of the following correctly expresses sin (70) + sin(30) as a product?

JulsSmile [24]

Answer:

2sin50 cos20

Step-by-step explanation:

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$\sin A+\sin B=2\sin (\dfrac{A+B}{2})\cos(\dfrac{a-b}{2})$

Here, A = 70 and B = 30

So,

$\sin 70+\sin 30=2\sin (\dfrac{70+30}{2})\cos(\dfrac{70-30}{2})\\\\\sin 70+\sin 30=2\sin 50\cos20$

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3 years ago

15x=3x+120 Show answer

inn [45]

15x = 3x + 120 (subtract both sides by 3x)
12x = 120 (divide both sides by 12)
x = 100

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3 years ago

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