3 years ago

What is this expression in simplified form? ( 6 square root 2) (-3 square root 5)

Mathematics

1 answer:

ki77a [65]3 years ago

5 0

Step-by-step explanation:

$- 18 \sqrt{10}$

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Look at The Picture Please Help!

BabaBlast [244]

Answer:

40%

Step-by-step explanation:

3/5x2=6/10

6/10x10=60/100

100-60=40

40%

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3 years ago

Question in photo—————————-

11111nata11111 [884]

Answer:

there is two solutions to that problem. you can find x is equal to two numbers.

7 0

2 years ago

Help with 21 would be much appreciated.

umka2103 [35]

Answer:

$\large\boxed{x=2\sqrt{21}\ and\ y=4\sqrt3}$

Step-by-step explanation:

Look at the picture.

ΔADC and ΔCDB are similar. Therefore the sides are in proportion:

$\dfrac{AD}{CD}=\dfrac{CD}{DB}$

We have

$AD=14-8=6\\CD=y\\DB=8$

Substitute:

$\dfrac{6}{y}=\dfrac{y}{8}$ <em>cross multiply</em>

$y^2=(6)(8)$

$y^2=48\to y=\sqrt{48}\\\\y=\sqrt{16\cdot3}\\\\y=\sqrt{16}\ cdot\sqrt3\\\\\boxed{y=4\sqrt3}$

For x use the Pythagorean theorem:

$x^2=6^2+(4\sqrt3)^2\\\\x^2=36+48\\\\x^2=84\to x=\sqrt{84}\\\\x=\sqrt{4\cdot21}\\\\x=\sqrt4\cdot\sqrt{21}\\\\\boxed{x=2\sqrt{21}}$

3 0

3 years ago

A square table is to be covered with small square ceramic tiles. The table has an area of 4 square feet.how many tiles are neede

timurjin [86]

Step-by-step explanation:

1 foot x3 is 36, and 36 divided by 4 is 9. 9 is your answer

7 0

3 years ago

What 2/9rounded to the nearest whole number

Arte-miy333 [17]

The answer is 3 because if you were to round 2.9 the next whole up from that is 3

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3 years ago