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2 years ago

7z^(1/2)-3=2z??? solve??/

Mathematics

1 answer:

Hoochie [10]2 years ago

3 0

Answer:

Z €{9, i can right a fraction but on top is 9 below is 4}

Step-by-step explanation:

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Omar wants to open an account for his grandchildren that he hopes will have

olga_2 [115]

Using compound interest, it is found that he must deposit $56,389.

Compound interest:

$A(t) = P(1 + \frac{r}{n})^{nt}$

A(t) is the amount of money after t years.
P is the principal(the initial sum of money).
r is the interest rate(as a decimal value).
n is the number of times that interest is compounded per year.
t is the time in years for which the money is invested or borrowed.

In this problem:

Hopes to have $80,000 in 20 years, thus $t = 20, A(t) = 80000$ .
Interest rate of 1.75%, thus $r = 0.0175$ .
Compounding monthly, thus $n = 12$
The investment is of P, for which we have to solve.

Then:

$A(t) = P(1 + \frac{r}{n})^{nt}$

$80000 = P(1 + \frac{0.0175}{12})^{12(20)}$

$P = \frac{80000}{(1 + \frac{0.0175}{12})^{12(20)}}$

$P = 56389$

He must deposit $56,389.

A similar problem is given at brainly.com/question/25263233

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2 years ago

Lynn's laptop computer is sitting on top of her desk and is creating an angle. What is a good estimate for the measurement of th

Wittaler [7]

B : 95! I’m pretty sure cause 90 is a straight angle and that’s near a computers angle is you look at it from the side .

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2 years ago

Read 2 more answers

Whats 0.8918 as a fraction

erma4kov [3.2K]

89/100. I hope this helps!

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2 years ago

What reasoning and explanations can be used when solving radical equations and how do extraneous solutions arise from radical eq

Mkey [24]

Answer:

We know that, a 'radical equation' is an equation that contains radical expressions, which further are the expressions containing radicals ( square roots and other roots of numbers ).

In order to solve radical equations, we use the rules of exponents and basic algebraic properties.

The common reasoning to use while solving a radical equation is:

1. Isolate the radical expression.

2. Square both sides of the equation to remove radical.

3. After removing the radical, solve the equation to find the unkown variable

4. Check the answer for the errors occurred by removing the radicals.

For e.g. $\sqrt{x}-3=5$

i.e. $\sqrt{x}-3+3=5+3$ ( Adding 3 on both sides )

i.e. $\sqrt{x}=8$

i.e. $(\sqrt{x})^{2} =8^{2}$

i.e. $x=64$ .

So, the solution the the radical equation $\sqrt{x}-3=5$ is x = 64.

Further, we know that an 'extraneous solution' is that root of the radical equation which is not a root of the original equation and is excluded from the domain.

for e.g. Take $\sqrt{x+4} =x-2$