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2 years ago

9 of 10

Mathematics

2 answers:

Ivenika [448]2 years ago

8 0

Answer:

$\frac{3}{10}$

Step-by-step explanation:

Set up the fraction 27/90
The numerator (the number above the fraction sign) represents the number of questions Jordan got correct.
The denominator (the number below the fraction sign) represents the number of questions on the test.
To simplify this equation, divide the numerator and denominator by their Greatest Common Factor (GCF) or continue dividing the numerator and denominator by the same number
GCF Method: GCF = 9 so 27/9 = 3 and 90/9 = 10
Therefore, the fraction is 3/10
Other Method: You know that 27 and 90 can be divided by 3, so divide both numbers by 3. 27/3 = 9 and 90/3 = 30.
9 and 30 can also be divided by 3. 9/3 = 3 and 30/3 = 10.
Therefore, the fraction is 3/10

Aleks04 [339]2 years ago

6 0

$\frac{3}{10}$

Answer:

Step-by-step explanation:

I just pressed 27/90 on the calculator hahahha

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Tabitha and her mother went to the pet store. Her mother told her she could either choose a cat, dog, or fish, and either get a

FinnZ [79.3K]

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3 years ago

The Dallas Development Corporation is considering the purchase of an apartment project for $100,000. They estimate that they wil

katovenus [111]

Answer:

<u>The rate of return is 8.15%</u>

<u>This is a good investment</u>

<u></u>

Explanation:

For the first question, you need to find the rate that makes the present value of a stream of ten constant annual payments of $15,000 equal to the $100,000 investment.

The formula that returns the present value of a constant payment is called the annuity formula and is:

$Present\text{ }value=payment\times \bigg[\dfrac{1}{r}-\dfrac{1}{r(1+r)^t}\bigg]$

In your problem you know:

Present value: $100,000
payment: $15,000
r: ?
t: 10

You cannot solve for r directly. You must guess a value and calculate the right side of the equation until to you find the rate that makes it equal to 100,000.

Try 5%:

$\$15,000\times \bigg[\dfrac{1}{0.05}-\dfrac{1}{0.05(1+0.05)^{10}}\bigg]=\$115,826$

Then, the rate of return is greater than 5%. After several trials you will find that the rate of return is 8.15%.

Since this rate is higher than 8%, which is what the company requires, this is a good investment.

5 0

3 years ago

Can u guys please help me!!

Alona [7]

Answer and Step-by-step explanation:

This problem requires the use of trigonometric functions, specifically the tangent trig function.

$tan(Angle)=\frac{opposite}{adjacent}$

Plug in the values.

$tan(40) = \frac{8000}{x}$

Multiply by x to both sides, then divide by tan(40) to both sides.

$x = \frac{8000}{tan(40)}$

Now, plug this into a calculator and rounded to the nearest whole number (foot).

x = 9534.0287

x = 9534 ft.

The answer is 9534 ft., the last option.

#teamtrees #WAP (Water And Plant)

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2 years ago

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siniylev [52]

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3 years ago

Read 2 more answers

Which trigonometric functions are negative in the fourth (IV) quadrant?

anzhelika [568]

<h3>Answers are: sine, tangent, cosecant, cotangent</h3>

Explanation:

On the unit circle we have some point (x,y) such that x = cos(theta) and y = sin(theta). The sine corresponds to the y coordinate of the point on the circle. Quadrant IV is below the x axis which explains why sine is negative here, since y < 0 here.

Since sine is negative, so is cosecant as this is the reciprocal of sine

csc = 1/sin

In quadrant IV, cosine is positive as x > 0 here. So the ratio tan = sin/cos is going to be negative. We have a negative over a positive when we divide.

Because tangent is negative, so is cotangent.

The only positive functions in Q4 are cosine and secant, which is because sec = 1/cos.

7 0

2 years ago