Tina constructed triangle XYZ.

Mathematics

1 answer:

Oxana [17]3 years ago

7 0

Answer:

It's D... Isosceles and right

Step-by-step explanation:

got it right on the quiz.

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Which equation has no solution?

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D has no solution because 7y-7y=0, and -15 can't equal 0

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A user car dealer brought a car for $12,000 and wants to sell it at a 15% profit. How much should he sell the car for?

Snezhnost [94]

Answer:

$13,800

Step-by-step explanation:

She sells the car for 115% of the value of the car, because she wants a 15% profit. 115% of 12000 is the same as 12000*1.15, since 115% is eqaul to 1.15. 12000*1.15 = 13800

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The value of a boat is $23,400. It loses 10% of its value every year. Find the approximate monthly percent decrease in value. Ro

Brrunno [24]

Answer:

Value of boat = $23,400

Loss of value by boat per year = 8%

To find: - Monthly percent decrease in value of boat.

Solution: - Decrease of value per year = 8% of $23,400 = $1,872. Monthly decrease in value = $1,872/12 = $156. Monthly percentage decrease = ($156/$23,400) * 100 = 0.6667 or 0.67 (rounded to nearest hundredth)

Step-by-step explanation:

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3 years ago

You want to get from a point A on the straight shore of the beach to a buoy which is 54 meters out in the water from a point B o

anyanavicka [17]

Answer:

$x =\dfrac{45 \sqrt{6}}{ 2}$

Step-by-step explanation:

From the given information:

The diagrammatic interpretation of what the question is all about can be seen in the diagram attached below.

Now, let V(x) be the time needed for the runner to reach the buoy;

∴ We can say that,

$\mathtt{V(x) = \dfrac{70-x}{7}+\dfrac{\sqrt{54^2+x^2}}{5}}$

In order to estimate the point along the shore, x meters from B, the runner should stop running and start swimming if he want to reach the buoy in the least time possible, then we need to differentiate the function of V(x) and relate it to zero.

i.e

The differential of V(x) = V'(x) =0

= $\dfrac{d}{dx}\begin {bmatrix} \dfrac{70-x}{7} + \dfrac{\sqrt{54^2+x^2}}{5} \end {bmatrix}= 0$