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3 years ago

HELP PLEASE What is the following product?

Mathematics

2 answers:

Naya [18.7K]3 years ago

6 0

The answer would be:

sergeinik [125]3 years ago

3 0

$(2 \sqrt{7}+3 \sqrt{6} )(5 \sqrt{2}+4 \sqrt{3} )=10 \sqrt{14}+8 \sqrt{21} +15 \sqrt{12}+12 \sqrt{18} = \\ =10 \sqrt{14}+8 \sqrt{21} +15 *2\sqrt{3}+12*3 \sqrt{2}= \\ = 10 \sqrt{14}+8 \sqrt{21} +30\sqrt{3}+36 \sqrt{2}$

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To what power must you raise the expression 7^1/2 to get 7 as the result?

Anvisha [2.4K]

Answer:

Step-by-step explanation:

(7^1/2)^2=7^(1/2*2)=7

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2 years ago

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hodyreva [135]

Answer:

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3 years ago

4x – 3y=8<br> 2. 5x – 2y = -11

AlladinOne [14]

Answer:

$x = -7$

$y = - 12$

Step-by-step explanation:

The given system is:

4x-3y=8

5x-2y=-11

We make x the subject in the top equation to get:

$x = \frac{3}{4}y + 2$

Plug this expression for x in the bottom equation to get

$5( \frac{3}{4}y + 2) - 2y= - 11$

We expand to obtain

$\frac{15}{4} y + 10 - 2y = - 11$

Multiply through by 4

$15y + 40 - 8y = - 44$

Group similar terms

$15y - 8y = - 44 - 40$

$7y = - 84$

$y = - \frac{84}{7} =-12$

This means

$x = -12\times \frac{3}{4} + 2$

$x = - 7$

6 0

3 years ago

1. A motorboat travels 196 meters in 20 seconds. What is the motorboat's unit rate of speed?

dezoksy [38]

Answer:

196: 9.8

20: 1

x= 9.8 meters in 1 second

Step-by-step explanation:

This can be determined by following writing equal ratios that represent a word problem. Then, the denominator must be divided from the numerator to get the unit rate/ meters per second.

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2 years ago

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(69 POINTS!!!)

marshall27 [118]

Answer:

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Step-by-step explanation:

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3 years ago

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