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3 years ago

9. Find the value of x. Round to the nearest degree.

Mathematics

1 answer:

Setler79 [48]3 years ago

3 0

I need more information to answer this

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Simplify the expression r^-3 s^5 t^2/r^2 st^-2

Hoochie [10]

R/s^5t^r2st-2/r^3
hope this helps

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3 years ago

Don't bought a tree ceiling that was 2 1/4 feet tall during the first year it grew 116 feet after two years it was 5 feet tall h

Llana [10]

The answer is 113.75 or 113 3/4

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3 years ago

If they are going 12 miles per 1/3 hour . What is the average speed per hour in miles

jasenka [17]

Answer:

12 miles per (1/3) hour equals

36 miles per hour

Step-by-step explanation:

3 0

3 years ago

The sum of the diagonals of a rhombus is 5√2.

Alex

Greetings!
Let ABCD be a rhombus
AC + BD = 5√2 cm

Area of ABCD = Ar△ABD + Ar △BCD
$= \frac{1}{2} \times BD \times AO + \frac{1}{2} \times BD \times OC$
$= \frac{1}{2} BD (AO + OC)$
$\frac{1}{2} BD \times AC$

$So, \frac{ BD \times AC}{2} = 4 \: cm {}^{2}$
$BD \times AC = 8$
$Now, AC + \: BD = 5 \sqrt{2}$

Squaring both sides, we get
$AC {}^{2} + BD {}^{2} + 2 AC.BD =50$
$AC {}^{2} + BD {}^{2} + 2 \times 8 = 50$
$AC {}^{2} + BD {}^{2} = 50 - 16$
$AC {}^{2} + BD {}^{2} = 34$

In △AOB, we have
$OA {}^{2} + OB {}^{2} =AB {}^{2}$
$( \frac{ AC }{2} ) {}^{2} + ( \frac{ BD}{2} ) {}^{2} = AB {}^{2}$
$\frac{ AC {}^{2} } {4} + \frac{ BD {}^{2} }{4} = AB {}^{2}$
$AC {}^{2} + BD {}^{2} = 4 AB {}^{2}$
$34 = 4 AB {}^{2}$

Square rooting both sides
$\sqrt{34} = 2 AB$
$Perimeter = 4 \: AB \\ = 2 \times 2 \: AB \\ = 2 \: \times \sqrt{34 } \\ = 2 \sqrt{34 \: } units$ .

Hope it helps!

7 0

3 years ago

Help me please I don't know this

Nutka1998 [239]

Answer:

I'll give you a hint

Step-by-step explanation:

The angles are not supplementary, which means they add up to 180 degrees, they are complementary, which means they add up to 90 degrees

Hope this helps!

3 0

3 years ago

Read 2 more answers