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Olin [163]
2 years ago
5

Can anyone help me with this please

Mathematics
1 answer:
deff fn [24]2 years ago
4 0

Answer:

RPM 1388.889

Horsepower 366.802

Step-by-step explanation:

We do not need to solve the equation for y = 0, which is nice. We can go directly to finding the maximum.

The maximum or minimum of ax^2+bx+c is always at x=-b/2a

with b = 25/45 and a = -1/5000 we get

x = -25/45 / (-2/5000) = 5/9 * 2500 = 12500/9 ≈ 1388.889

Now we only need to put that x into the equation (ideally in form of 12500/9 for accuracy) and we get the horsepower of ~366.802

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What is the value of x in the following equation, x/4 = -120? (Btw, it's x over 4 not division :)
Sergio039 [100]
If you mean by x over 4 that it is fraction then there is no different between it and divisions
x/4 = -120
x = -120 × 4 ( when division goes to the other side of equal it turns into multiplication)
x = -480

A. -480
5 0
3 years ago
Read 2 more answers
Select the simplification that accurately explains the following statement.
Mariana [72]

<u>Answer</u>

D


<u>Explanation</u>

9⁽¹/²⁾² =  (9⁽¹/²⁾)²

        = 9¹/² × 9¹/²           (Since the base are the same, we can add the power.)

         = 9⁽¹/² ⁺¹/²⁾

         = 9 ¹

           = 9

The correct simplification is D.

8 0
3 years ago
8.5x+51.86=-11.5x+51.76
solniwko [45]
Add, -11.5x and move it over to 8.5x

Then, subtract them together and you get 20x + 51.86 = 51.76

And you move (subtract) 51. 86 over to 51.76, subtract that and you get             20x = -0.1

Divide, and your answer is -200
7 0
3 years ago
A gallon of gasoline cost 2.96. Your car has a 25 gallon gas tank and can travel 28.8 miles on each gallon of gasoline. How much
geniusboy [140]
<h2>Greetings!</h2>

Answer:

It would cost 47.36

Step-by-step explanation:

First, you need to find out how many gallons are needed to fill the tank. To do this, simply multiply 25 by the fraction that is how much is already in there:

25 x \frac{3}{8} = 9.375

So that means that there is 9.375 gallons already in the tank. To find the amount needed to fill the tank:

25 - 9.375 = 15.625

So 15.625 gallons are needed, rounded up to 16 gallons because you cannot get a decimal value of gallons.

That means that 16 x the price = the amount to fill the tank:

16 x 2.96 = 47.36

So it would cost 47.36 to fill the tank!


<h2>Hope this helps!</h2>
4 0
3 years ago
15/2 as a decimal plz first person to answer is going to be the brainleist
I am Lyosha [343]
Its 17.5 im 100% sure
3 0
3 years ago
Read 2 more answers
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