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2 years ago

What two numbers multiply to get -15 but add together to get -2?

Mathematics

1 answer:

damaskus [11]2 years ago

4 0

Answer:

-5,3

Step-by-step explanation:

-5x3=-15

-5+3=-2

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8oooo in Standard form

kykrilka [37]

Answer:

80.0000*10^4

Step-by-step explanation:

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2 years ago

Round .6283 to the nearest hundredth

Sveta_85 [38]

The answer is-. 63
.0= tenths
.00= hundredths

how to round:
ex. let's say the number is 51 and it says to round to the nearest tens place you look at the new mber before it to round. So you would loom at the 1, keep in mind that any number lower than 5 toy round down. so the answer would be 50. Now consider the number 57 you would round up because 5 or greater you would round up so it would be 60.

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2 years ago

The perimeter of a right-angled triangle is 72 cm.

Verizon [17]

Answer:

the sides of the triangle are 4 cm , 8 cm , 20 cm

6 0

2 years ago

Simplify: 3х + 5y-x+ 2y & 3g + 5h +4g - 2h

vladimir1956 [14]

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$3x + 5y - x + 2y =$

$3x - x + 5y + 2y =$

$(3 - 1)x + (5 + 2)y =$

$2x + 7y$

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$3g + 5h + 4g - 2h =$

$3g + 4g + 5h - 2h =$

$(3 + 4)g + (5 - 2)h =$

$7g + 3h$

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8 0

2 years ago

Find the absolute extreme of the function on the closed interval. y=9e^xsinx , [0,pi]

Molodets [167]

For convenience sake, I will let $y=f(x)=9e^{x}\sin x$

First, we evaluate the function at the endpoints of the interval.

$f(0)=9e^{0}\sin(0)=0\\\\f(\pi)=9e^{\pi}\sin(\pi)=0$

Then, we need to find the critical points.

We can start by taking the derivative using the power rule.

$f'(x)=9e^{x} \frac{d}{dx} \sin x+9\sin x \frac{d}{dx} e^{x}=9e^{x}(\cos x+\sin x)$

Setting this equal to 0,

$9e^x (\cos x+\sin x)=0$

Since $9e^x > 0$ , we can divide both sides by $9e^x$ .

$\cos x+\sin x=0\\\\\sin x=-\cos x\\\\\tan x=-1\\\\x=\frac{3\pi}{4}$

$f\left(\frac{3\pi}{4} \right)=9e^{3\pi/4}\sin \left(\frac{3\pi}{4} \right)=\frac{9\sqrt{2}e^{3\pi/4}}{2}$

So, the absolute minimum is $\boxed{\left(\frac{3\pi}{4}, \frac{9\sqrt{2}e^{3\pi/4}}{\sqrt{2}} \right)}$ and the absolute minima are $\boxed{(0,0), (\pi, 0)}$

3 0

1 year ago