asinus

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In a hot air balloon race a ballon traveled 1800 km from Germany to Greece in 60 hours. What was its average speed in km per hour?

The average speed in km per hour is

${\color{blue}v = \frac{s}{t}= \frac{1800km}{60h}= 30\frac{km}{h}}$     !

What (6 1/4 feet tall and 3 feet wide) is the area of the door?

$A =6 \frac{1}{4}feet\times 3feet=\frac{25}{4}feet\times 3feet$

$= \frac{75}{4}feet^2=18\frac{3}{4}feet^2$

The area of the door is ${\color{blue}A=18\frac{3}{4}feet^2}$ .    !

Hello Guest!

if the triangle is a right angle triangle, no other angles are given, and only one side is given, how do we have find the other side. No other angles are given and nothing else is given. How do we approach this question?

triangle A B C

Given:

γ = 90°

a = 1 m

You have only two sizes.
To describe a triangle, you need 3 sizes

.
Greeting asinus : -)    !

If y varies directly with x, and y is 4 when x = 1/2, what is the constant of variation?

y = c * x

4 = 8 * (1/2)

The constant of variation is 8.    !

√24 x √80/19

$\frac {\sqrt {24}\times \sqrt{80}}{19}$= $\frac{\sqrt{24\times {80}}}{19}$= $\frac{\sqrt{2^7\times 3 \times 5}}{19}$

= $\frac{2^3}{19}\times\sqrt{2\times 3\times 5}$

= ${\color{blue}\frac{8}{19}\times\sqrt{30}}$     !

what is 6 to the fifth power

${\color{blue}6^5=7776}$   !

how can i get 4+7*3^2-2+5*6 to equal 25?

${\color{black}4+7\times 3^{2}-2+5\times 6 =95}$ 

${\color{blue}4+7\times 3^{2}-2-5\times 6 =25}$   !
 

What is 3 to the power of 7

${\color{blue}3^7=2187}$  !

was ergibt die wurzel aus 40xy²

${\color{blue}\sqrt{40xy^2}=\sqrt{2^3\times5\times x\times y^2}=4y\times\sqrt{10x}}$  !