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DochEvi [55]
3 years ago
13

PLZ HELPPPPP!!!It is due soon if someone could help that would be greattt!

Mathematics
1 answer:
Ganezh [65]3 years ago
5 0

Answer:

1. true

2. False

3. False

4. True

Step-by-step explanation:

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Help with Pre Calculus
marshall27 [118]

Answer:

The first option

Step-by-step explanation:

The domain of a rational function should be all real numbers except for when the denominator is equal to 0. To find when the denominator is equal to 0 you simply need to find the zeroes of the denominator... but in this case you can do that through factoring and using the quadratic equation.

So first step is going to be to factor out the GCF, which in this case is x. This gives you the equation. x(2x^2-x-15). So one of the zeroes is when x=0. Now to find the other two zeroes you can use the quadratic equation which is x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}\\\\. So to find the other zeroes you simply plug the values in. a=2, b=-1, c=-15

x=\frac{-(-1)\pm\sqrt{(-1)^2-4(2)(-15)}}{2(2)}\\\\x=\frac{1\pm\sqrt{1-4(2)(-15)}}{4}\\\\x=\frac{1\pm\sqrt{121)}}{4}\\\\x=\frac{1\pm11}{4}\\\\x=\frac{12}{4}\\x=3\\\\x=\frac{-10}{4}\\x=-\frac{5}{2}

4 0
2 years ago
Mr. Layton needs to buy some oil for his central heating. He can put up to 2500 litres of oil in his oil tank. There are already
allochka39001 [22]

Answer:

Step-by-step explanation:

If the tank holds 2500 liters and there are already 750 liters in there, he only needs to buy 1750 liters.

If he is saving 6%, he is still spending 94%, so

.94(58.4) = 54.896 (what he'll be paying per liter after the 6% comes off, then

54.896(1750) = $96,068

4 0
2 years ago
find the value of x. Round to the nearest degree
Aleksandr-060686 [28]

Answer:

51 degress

Step-by-step explanation:

sin x = 7/9

x = sin^-1 (7/9)

simply using a calculator.

3 0
3 years ago
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Find the radius of a circle with an area of 380 in².
Likurg_2 [28]

Answer:

11 inches

Step-by-step explanation:

The area of a circle can be found using:

a=\pi r^{2}

We already know that the area is 380, so we can substitute 380 in for a.

380=\pi r^2

Now, we need to find the radius. To do this, we need to get r by itself

First, divide both sides by pi

380/\pi =\pi r^2/\pi

120.95775675=r^2

Since r is being squared, we need to take the square root of both sides

\sqrt{120.95775675}=\sqrt{r^2}

10.9980796846=r

If we round to nearest whole number, our radius is 11 inches

5 0
3 years ago
What is the product of StartFraction 5 Over 11 EndFraction and Three-fourths?
Alex

Answer:

OK SORRY TO WASTE POINTS BUT PLEASE DO NOT CLICK THALE LINK IN THE ANSWER ABOVE, IT TRACKS YOU

Step-by-step explanation:

PLEASE IM BEGGING YOU

3 0
2 years ago
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