All categories

3 years ago

Bill has x pence.

Mathematics

1 answer:

creativ13 [48]3 years ago

3 0

Answer:

Step-by-step explanation:

bill has X and Ben has twice X so Ben has 2X

You might be interested in

Least common multiple of z^2+6z+9 and z^2+z-6

Firdavs [7]

Hint: $\bf \begin{array}{ccllll}
z^2+6z+9&z^2+z-6\\
\downarrow &\downarrow \\
(z+3)(z+3)&\underline{(z+3)(z-2)}
\end{array}$

5 0

3 years ago

Find x.<br> x = 4<br> x = 5<br> x = 6

ivann1987 [24]

X=5, should be right correct me if i’m wrong.

7 0

2 years ago

Read 2 more answers

During it's first 50 days of growth a sunflower grows about 4 cm a day. Using this rate how many days will it take for the sunfl

Alex787 [66]

The answer is 15 days because
$60 \div 4 = 15$

4 0

3 years ago

Write 24 over 40 in simplest form

dsp73

Three over five or 3/5

6 0

3 years ago

Type the correct answer in each box. Use numerals instead of words. If necessary, use / for the fraction bar(s).

ddd [48]

Answer:

$f'(x) = 4x^2 - 3$ for $x \le -3$

Step-by-step explanation:

See attachment for proper question

Given

$f(x) = -\frac{1}{2}\sqrt{x + 3}$

For

$x \ge -3$

Required

Determine the inverse function

$f(x) = -\frac{1}{2}\sqrt{x + 3}$

Replace f(x) with y

$y = -\frac{1}{2}\sqrt{x + 3}$

Swap the positions of x and y

$x = -\frac{1}{2}\sqrt{y + 3}$

Multiply both sides by -2

$-2 * x =-2 * -\frac{1}{2}\sqrt{y + 3}$

$-2x =\sqrt{y + 3}$

Square both sides

$(-2x)^2 =(\sqrt{y + 3})^2$

$4x^2 =y + 3$

Make y the subject

$y = 4x^2 - 3$

The inverse has been solved. So, we need to replace y with f'(x)

$f'(x) = 4x^2 - 3$

Next, is to determine the interval

$x \ge -3$

Change inequality to $\le$

$x \le -3$

Hence, the inverse function is:

$f'(x) = 4x^2 - 3$ for $x \le -3$

7 0

3 years ago