All categories

3 years ago

Evaluate (5 - 8) + (-3-2) Round to the nearest hundredths place

Mathematics

2 answers:

SCORPION-xisa [38]3 years ago

8 0

Answer:

The answer is 8.

I'm pretty sure.

Law Incorporation [45]3 years ago

3 0

It’s -8 because -3 + -5 is -8

You might be interested in

F(x) = 17 - 2x Find f(a + 7)

Fudgin [204]

Answer:

-2a + 3

Step-by-step explanation:

We can substitute a + 7 for x:

f(a + 7) = 17 - 2(a+7) = 17 - 2a - 14 = -2a + 3

4 0

3 years ago

Compare and contrast subtracting integers and subtracting whole numbers

Galina-37 [17]

Subtracting whole numbers does not include subtracting negative numbers, whereas when subtracting integers you can include negative numbers.

6 0

3 years ago

15. If x=a Sin2t (I+Cos2t) and y=b Cos 2t (1-Cos2t) then find dy/dx at =22/7*4

Sav [38]

By the chain rule,

$\dfrac{\mathrm dy}{\mathrm dx}=\dfrac{\mathrm dy}{\mathrm dt}\dfrac{\mathrm dt}{\mathrm dx}\implies\dfrac{\mathrm dy}{\mathrm dx}=\dfrac{\frac{\mathrm dy}{\mathrm dt}}{\frac{\mathrm dx}{\mathrm dt}}$

It looks like we're given

$\begin{cases}x=a\sin(2t)(1+\cos(2t))\\y=b\cos(2t)(1-\cos(2t))\end{cases}$

where a and b are presumably constant.

Recall that

$\cos^2t=\dfrac{1+\cos(2t)}2$

$\sin^2t=\dfrac{1-\cos(2t)}2$

so that

$\begin{cases}x=2a\sin(2t)\cos^2t\\y=2b\cos(2t)\sin^2t\end{cases}$

Then we have

$\dfrac{\mathrm dx}{\mathrm dt}=4a\cos(2t)\cos^2t-4a\sin(2t)\cos t\sin t$

$\dfrac{\mathrm dy}{\mathrm dt}=-4b\sin(2t)\sin^2t+4b\cos(2t)\sin t\cos t$

$\implies\dfrac{\mathrm dy}{\mathrm dx}=\dfrac{4b\cos(2t)\sin t\cos t-4b\sin(2t)\sin^2}{4a\cos(2t)\cos^2t-4a\sin(2t)\cos t\sin t}$

$\implies\boxed{\dfrac{\mathrm dy}{\mathrm dx}=\dfrac ba\tan t}$

where the last reduction follows from dividing through everything by $\cos(2t)\cos^2t$ and simplifying.

I'm not sure at which point you're supposed to evaluate the derivative (22/7*4, as in 88/7? or something else?), so I'll leave that to you.

8 0

3 years ago

What is 30 + 1/8 as a mixed number

Usimov [2.4K]

If you mean as a decimal, it's 30.125.

3 0

3 years ago

Alguien me ayuda?? lo necesito hoy :ccccc ☕

Brrunno [24]

Answer:

no se entiende la imagen

3 0

2 years ago

Read 2 more answers

Evaluate (5 - 8) + (-3-2) Round to the nearest hundredths place​

Evaluate (5 - 8) + (-3-2) Round to the nearest hundredths place