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3 years ago

Please help!!! i’ll mark brainliest!

Mathematics

1 answer:

hichkok12 [17]3 years ago

3 0

Answer:

21 width 13length!!

Step-by-step explanation:

GURLLLLLLLLLLLL PICK IT also im not sure i think HOPEFULLY IS RIGHT

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The product of two numbers is 49 and the difference of those numbers is 13 what are the numbers

V125BC [204]

Xy=49
x-y=13

x=13+y

y(13+y)=49
y²+13y-49=0
solve using the quadratic formula

4 0

4 years ago

. Joan has a prescription for 100 Theophylline capsules. Joan informs the pharmacist that she only has enough money to purchase

liubo4ka [24]

Answer:

Step-by-step explanation:

There are 100 capsules and she can only buy 1/4

Multiply 100 * 1/4

100 * 1/4 =

100/4

We can check by calculating how many she leaves at the store

100 * 3/4 =

300 /4 = 75

The ones she bought , plus the ones she left behind should be 100 capsules

25+ 75 = 100

100 = 100

Check

7 0

3 years ago

Find the percent increase or decrease from 24 to 234.

irina [24]

Answer:

it is increase

234-24 = 210

210/24=8.75 x 100

875%

Step-by-step explanation:

6 0

3 years ago

Math-Limits and Derivative. Could anybody help me,please ?

Serhud [2]

Answer:

Step-by-step explanation:

Hello, please consider the following.

$\displaystyle f'(0)=\lim_{x\rightarrow0} {\dfrac{f(x)-f(0)}{x-0}}\\\\=\lim_{x\rightarrow0} {\dfrac{\dfrac{\sqrt{1+x}-1}{x}-k}{x}}\\\\=\lim_{x\rightarrow0} {\dfrac{\dfrac{\sqrt{1+x}-1-kx}{x}}{x}}\\\\=\lim_{x\rightarrow0} {\dfrac{\sqrt{1+x}-1-kx}{x^2}}\\$

Thank you

7 0

3 years ago

AP CALC 98 POINTS!!!!!!

bekas [8.4K]

Looking at this question again, I don't understand why you're told "for y=11". That doesn't seem relevant at all... So you can disregard the answer I posted a few minutes ago on your other question.

a) With $x^2=-2+y+5\cos y$ , differentiate both sides with respect to $x$ to get

$2x=\dfrac{\mathrm dy}{\mathrm dx}-5\sin y\dfrac{\mathrm dy}{\mathrm dx}$

$\implies\dfrac{\mathrm dy}{\mathrm dx}=\dfrac{2x}{1-5\sin y}$

b) The point P occurs at $x=2$ , which corresponds to a $y$ -coordinate of

$4=-2+y+5\cos y\implies y\approx4.928$

The slope of the line tangent to this point is approximately

$\dfrac{\mathrm dy}{\mathrm dx}\approx\dfrac{2(2)}{1-5\sin(4.928)}\approx0.68$

so the equation of the tangent line is approximately

$y-4.928=0.68(x-2)\implies y=0.68x+3.57$

c) The tangent line to the graphed curve is vertical when $\dfrac{\mathrm dy}{\mathrm dx}$ is undefined. This happens when $1-5\sin y=0$ , or $y=\pi-\sin^{-1}\dfrac15+2n\pi$ and $y=\sin^{-1}\dfrac15+2n\pi$ where $n$ is any integer.

In case you're not sure where the general solution came from: We have

$\sin y=\dfrac15$

which has an infinite number of solutions. $\sin^{-1}\dfrac15$ is one of them, which we obtain by taking the inverse sine of both sides of this equation. Since $\sin(\pi-x)=\sin x$ , we also know that $\pi-\sin^{-1}\dfrac15$ is a solution. And since $\sin(x+2n\pi)=\sin x$ for integers $n$ , we also know that we can add any multiple of $2\pi$ to these two solutions to get infinitely more solutions.

3 0

3 years ago