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3 years ago

DAY 3 please help i dont understand

Mathematics

2 answers:

baherus [9]3 years ago

8 0

The answer to day 3 is A :)

djyliett [7]3 years ago

4 0

The answer is actually c.

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A 2-pack of plastic flower pots costs $8.90. What is the unit price?

I am Lyosha [343]

Answer:

$0.79

Explanation:

1.58/2= 0.79

8 0

2 years ago

Read 2 more answers

I need help with this

vfiekz [6]

Answer:

Volume = 14.5 cm³

Step-by-step explanation:

Volume of cone = $\pi r^2\frac{h}{3}$

Where r = 2 and h = 3.46

Volume = $(3.14)(2)^2\frac{3.46}{3}$

Volume = (3.14)(4)(1.15)

Volume = 14.5 cm³

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2 years ago

Consider the implicit differential equation <img src="https://tex.z-dn.net/?f=%2849%20y%5E%7B3%7D%20%2B%2045%20xy%29%20dx%20%2B%

BaLLatris [955]

We're looking for an integrating factor $\mu(x,y)=x^py^q$ such that

$\mu\underbrace{(49y^3+45xy)}_M\,\mathrm dx+\mu\underbrace{(98xy^2+50x^2)}_N\,\mathrm dy=0$

is exact, which would require that

$(\mu M)_y=(\mu N)_x$
$(49x^py^{q+3}+45x^{p+1}y^{q+1})_y=(98x^{p+1}y^{q+2}+50x^{p+2}y^q)_x$
$49(q+3)x^py^{q+2}+45(q+1)x^{p+1}y^q=98(p+1)x^py^{q+2}+50(p+2)x^{p+1}y^q$
$\implies\begin{cases}49(q+3)=98(p+1)\\45(q+1)=50(p+2)\end{cases}\implies p=\dfrac52,q=4$

You can verify that $(\mu M)_y=(\mu N)_x$ if you'd like. With the ODE now exact, we have a solution $F(x,y)=C$ such that

$F_x=\mu M$
$F=\displaystyle\int(49y^3+45xy)x^{5/2}y^4\,\mathrm dx$
$F=10x^{9/2}y^5+14x^{7/2}y^7+f(y)$

$F_y=\mu N$
$50x^{9/2}y^4+98x^{7/2}y^6+f'(y)=98x^{7/2}y^2+50x^{9/2}y^4$
$f'(y)=0$
$\implies f(y)=C$

and so the general solution is

$F(x,y)=10x^{9/2}y^5+14x^{7/2}y^7=C$

8 0

2 years ago

A triangle has sides of length 7 cm, 4 cm, and 5 cm. How many unique triangles can be drawn that fit that description? Explain o

AlladinOne [14]

Only one triangle can be drawn

5 0

2 years ago

Hilda wants to save 825 digital photographs in an online album. Each folder of the album can save 6 photographs. She uses divisi

Tresset [83]

Hilda wants to save 825 digital photograph in an online album.
Each folder of the said album can only save 6 photographs.
Now, let’s find out how many pages of the album will Hilda need to be able to store the 825 photograph,
=> According to the problem, she used division to get the answer.
Solution
=> how many 6s are there in 825:
=> 825 / 6
=> 137.5
The first digit in the quotient is in hundreds place.

5 0

3 years ago