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3 years ago

325% as a fraction in simplest form

Mathematics

2 answers:

sertanlavr [38]3 years ago

7 0

Move the decimal point to the left twice. 0.25 is equal to 1/4. 3+1/4=3 1/4

I am Lyosha [343]3 years ago

5 0

13/40 is the answer

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Paula always withdraws 20 dollars more than she needs from the bank. Write an expression for the amount of money Paula withdraws

Pani-rosa [81]

Because the original statement states that Paula withdrew $20 MORE, then me can write a statement as instructed, with "d" meaning dollars:
d + $20
Hope that helps:)

7 0

3 years ago

Find dy/dx x=a(cost +sint) , y=a(sint-cost)

MissTica

Answer:

$\begin{aligned} \frac{dy}{dx} &= \frac{\cos(t) + \sin(t)}{\cos(t) - \sin(t)} \end{aligned}$ given that $a \ne 0$ and that $\cos(t) - \sin(t) \ne 0$ .

Step-by-step explanation:

The relation between the $y$ and the $x$ in this question is given by parametric equations (with $t$ as the parameter.)

Make use of the fact that:

$\begin{aligned} \frac{dy}{dx} = \quad \text{$\frac{dy/dt}{dx/dt}$ given that $\frac{dx}{dt} \ne 0$} \end{aligned}$ .

Find $\begin{aligned} \frac{dx}{dt} \end{aligned}$ and $\begin{aligned} \frac{dy}{dt} \end{aligned}$ as follows:

$\begin{aligned} \frac{dx}{dt} &= \frac{d}{dt} [a\, (\cos(t) + \sin(t))] \\ &= a\, (-\sin(t) + \cos(t)) \\ &= a\, (\cos(t) - \sin(t))\end{aligned}$ .

$\begin{aligned} \frac{dx}{dt} \ne 0 \end{aligned}$ as long as $a \ne 0$ and $\cos(t) - \sin(t) \ne 0$ .

$\begin{aligned} \frac{dy}{dt} &= \frac{d}{dt} [a\, (\sin(t) - \cos(t))] \\ &= a\, (\cos(t) - (-\sin(t))) \\ &= a\, (\cos(t) + \sin(t))\end{aligned}$ .

Calculate $\begin{aligned} \frac{dy}{dx} \end{aligned}$ using the fact that $\begin{aligned} \frac{dy}{dx} = \text{$\frac{dy/dt}{dx/dt}$ given that $\frac{dx}{dt} \ne 0$} \end{aligned}$ . Assume that $a \ne 0$ and $\cos(t) - \sin(t) \ne 0$ :

$\begin{aligned} \frac{dy}{dx} &= \frac{dy/dt}{dx/dt} \\ &= \frac{a\, (\cos(t) + \sin(t))}{a\, (\cos(t) - \sin(t))} \\ &= \frac{\cos(t) + \sin(t)}{\cos(t) - \sin(t)}\end{aligned}$ .

4 0

3 years ago

WILL GIVE BRAINEST find f(-2) for f(x)=2×3^x a.-18 b.1/18 c.-36 d.2/9

-BARSIC- [3]

D is correct. f(-2) the number in the bracket is an input so..
whenever you see an X in the function replace it with -2
f(-2)=2*3^-2
3^-2 is 1/9
1/9 * 2 is simply 2/9
so D is correct

5 0

3 years ago

Read 2 more answers

Given ∆PRS ≅ ∆CFH, find the values of x, y, and z. x= y= z=

Goshia [24]

Figure

We need it

Mark brainliest please

Hope this helps

5 0

3 years ago

Need ASAP please!!!15 points! :)

ivanzaharov [21]

Answer: expression below gives the average

rate of change of the function pon 5 sxs8?

08-5

1-10

8-5

07-1

8-5

Step-by-step explanation:

4 0

3 years ago