3 years ago

In how many different ways can 6 riders be matched up with 6 horses?

Mathematics

2 answers:

Natalka [10]3 years ago

7 0

36 because 6 times 6 is 36

IRISSAK [1]3 years ago

3 0

Maybe 9 im not sure but i would put that i hope it might help im not sure

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Which number produces a rational number when multiplied by 0.5?

nikdorinn [45]

A.
0.5 and 1/3 is rational.
Rational times rational is rational.

7 0

3 years ago

In triangle JKL, if angle J is seven less than angle L and angle K is 21 less than twice angle L, find the measure of each angle

saul85 [17]

Answer:

L = 52°

J = 45°

K = 83°

Step-by-step explanation:

J = L - 7

K = 2L - 21

J + K + L = 180°

∴ (L - 7) + (2L - 21) + L = 180

4L - 28 = 180

4L = 208

L = 52°

J = 52 - 7 = 45°

K = 2 x 52 - 21 = 83°

7 0

3 years ago

How do you express this in scientific notation?

Ber [7]

5x10^9
Just find out how many zeros there are

8 0

3 years ago

0.25 as a simplified fraction

Umnica [9.8K]

1/4 because 0.25 is the same thing as 25/100. 25/100 simplified is 1/4

8 0

3 years ago

<img src="https://tex.z-dn.net/?f=f%28x%29%20%3D%20%7Bx%7D%5E%7B2%7D%20%2B%204x%20-%205" id="TexFormula1" title="f(x) = {x}^{2}

frutty [35]

The inverse function theorem says

$\dfrac{\mathrm df^{-1}}{\mathrm dx}(16)=\dfrac1{\frac{\mathrm df}{\mathrm dx}(f^{-1}(16))}$

We have

$f(x)=x^2+4x-5$

defined on $x>-2$ , for which we get

$f^{-1}(x)=-2+\sqrt{x+9}$

and

$f^{-1}(16)=-2+\sqrt{16+9}=3$

The derivative of $f(x)$ is

$f'(x)=2x+4$

So we end up with

$\dfrac{\mathrm df^{-1}}{\mathrm dx}(16)=\dfrac1{\frac{\mathrm df}{\mathrm dx}(3)}=\dfrac1{10}$

6 0

3 years ago