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4 years ago

7

Simplify this expression HELP ASAP

1 answer:

Sergio039 [100]4 years ago

8 0

Answer:

B

Step-by-step explanation:

Noting the following rule of radicals

$\sqrt{a}$ × $\sqrt{b}$ = $\sqrt{ab}$

Given

( $\sqrt{2}$ + $\sqrt{3}$ )( $\sqrt{5}$ - $\sqrt{7}$ )

Each term in the second factor is multiplied by each term in the first factor

= $\sqrt{2}$ ( $\sqrt{5}$ - $\sqrt{7}$ ) + $\sqrt{3}$ ( $\sqrt{5}$ - $\sqrt{7}$ ) ← distribute parenthesis

= $\sqrt{10}$ - $\sqrt{14}$ + $\sqrt{15}$ - $\sqrt{21}$

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Step-by-step explanation:

To find the volume of rectangular-shaped box we will have to multiply the length by the width by the height.

Given the statements we can determine the length with the equation

L = h -3 where l is the length and h is the height.

the width can also be represent by the equation

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The height is is h and the length is h- 3 and the width is also h+4 so the expression will be h(h-3)(h+4)

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3 years ago

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Step-by-step explanation:

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3 years ago

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7 0

3 years ago

Please help due today

umka21 [38]

Answer:

y=2 x=3 i think

Step-by-step explanation:

2y+3=y+5

y=5-3

y=2

4x-3=4y+1

4x-3=4×2+1

4x-3=9

4x=9+3

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3 0

3 years ago

The number of households without a computer at home in 2009 was closest to A)801000 B)1153000 C)1737000 D)3433000 E)4017000

bagirrra123 [75]

Answer:

B) 1153000

Step-by-step explanation:

Given

See attachment

Required

Number of households without computer in 2009

From the attachment, we have:

$n=5170000$ --- survey

$p = 22.3\%$ --- proportion without computer

So, the actual number is:

$Number = p * n$

$Number = 22.3\% * 5170000$

$Number = 1152910$

$Number \approx 1153000$

<em>Hence: (B) is correct</em>

7 0

3 years ago