Ask question

Ask question

All categories

4 years ago

15

A rectangle with sides 13 cm and 7 cm has the same diagonal as a square. What is the length of the side of the square. Give your

answer as a surd.

1 answer:

Valentin [98]4 years ago

8 0

Answer:

Step-by-step explanation:

The diagonal ^2= 13^2+7^2

=169+49=218

diagonal = V218

the lengh of the square=l

l^2+l^2= 218

2l^2=218

l^2= 218/2= 109

l= ✓109

You might be interested in

F(x)= <br><img src="https://tex.z-dn.net/?f=%20%5Cfrac%7B4x%20-%207%7D%7B10%7D%20" id="TexFormula1" title=" \frac{4x - 7}{10} "

Naily [24]

Answer:

To find f-¹(x) of f(x) equate f(x) to y

That's

f(x) = y

So we have

$y = \frac{4x - 7}{10}$

Next interchange the variables that's x becomes y and y becomes x

That's

$x = \frac{4y - 7}{10}$

Next make y the subject

Cross multiply

We have

4y - 7 = 10x

Move -7 to the right side of the equation

4y = 10x + 7

Divide both sides by 4

We have the final answer as

$y = \frac{10x + 7}{4}$

So

$f ^{ - 1} (x) = \frac{10x + 7}{4}$

Hope this helps you

7 0

4 years ago

Quem poder me ajudar, eu agradeço, olhem a imagem a baixo

seropon [69]

Answer:

counfsed so can u write it in english ?

Step-by-step explanation:

4 0

3 years ago

1. What is the approximate area of a circle with a diameter of 20 inches?

ad-work [718]

Answer:

1. 100 $\pi$

2. 27 $cm^{3}$

3. 30

Step-by-step explanation:

Area = $\pi$ $r^{2}$

= $\pi$ x $10x^{2}$

= 100 $\pi$

Volume = l x w x h

= 3 x 3 x 3

= 27

7 0

3 years ago

Please show work thank you

sasho [114]

3 x3 = 9 4 x 3 =12 6 x 2 = 18 3 x

6 0

3 years ago

Please someone can help me with #13, 15 and 16 Thanks.

ladessa [460]

What's the question though?

8 0

3 years ago