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3 years ago

Find the exact value of x.

Mathematics

1 answer:

PolarNik [594]3 years ago

7 0

Answer:

$x = 4 \sqrt{3}$

Step-by-step explanation:

$\frac{8}{2} = 4 \\ 4 \times \sqrt{3} = 4 \sqrt{3}$

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Number 15 really need help

Leokris [45]

$9 a day for 8 days.

So, for every day that went by they earned $9. In other words the answer is the Amount of Money Earned per day multiplied by the number of days!

So!

$9 * 8days

Or you can also think of it as this:
9+9+9+9+9+9+9+9

Our answer comes out to be 72!

8 0

3 years ago

Read 2 more answers

Misty is buying a house for $385,000. She is financing $345,500 and obtained a 15 year fixed rate mortgage with the 4.875% inter

Nikitich [7]

345500=pmt[(1-(1+0.04875/12)^(-12×15))/(0.04875/12)]
Solve for pmt
Pmt=2709.75

3 0

3 years ago

Find the circumference of the circle in terms of pi

madam [21]

It's 78π inches so probably d.

3 0

3 years ago

8. A substance has a half life of 2.347 minutes.

mina [271]

Answer:

a.) 4 half lives have passed

b) 9.388 minutes

Step-by-step explanation:

Formula for exponential growth / decay is given as:

$A=A_0b^{\frac{t}{c}}$

Where $A$ is the final population

$A_0$ is the initial population

$b$ is the growth factor

$c$ is the time taken for the growth 'b'

$t$ is the amount of time

Here, we are given that:

$A$ = 6. 9 grams

$A_0$ = 110.4 grams

$b = \dfrac{1}{2}$

$c = 2.347$ min

To find:

a.) Number of half lives taken for the decay.

b.) Total time in the decay.

Solution:

a.) Number of half lives taken for the decay is nothing but equal to $\frac{t}{c}$ .

Putting the values in the formula, we get:

$6.9=110.4\times \frac{1}2^{\frac{t}{c}}\\\Rightarrow 6.9=110.4\times 0.5^{\frac{t}{c}}\\\Rightarrow 0.0625=0.5^{\frac{t}{c}}\\\Rightarrow \dfrac{t}{c} =4$

Therefore, the answer is:

<em>4 half lives </em>have passed.

b.) Total time of decay. We have to find the value of $t$ here.

From answer of part a.):

$\dfrac{t}{c} =4\\\Rightarrow \dfrac{t}{2.347} =4\\\Rightarrow t =\bold{9.388\ min}$

7 0

3 years ago

Given the following sets. a = {0, 1, 2, 3} b = {a, b, c, d} c = {0, a, 2, b} find a c.

ipn [44]

I think the answer is 0.

7 0

3 years ago