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4 years ago

How can the tiles be sorted? (I need it quick please)

Mathematics

1 answer:

frez [133]4 years ago

5 0

Answer:

by fraction and decimals

Step-by-step explication:

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What is the length of HI? (Giving 40 points please hurry!)

scoundrel [369]

The length of HI IS 3 since 9-6 is 3

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2 years ago

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Solve each inequality 3<-5n + 2n

ivolga24 [154]

Answer: -1>n

Step-by-step explanation:1) combine like terms (-5n+2n=-3n) so you have 3<-3n then you divide -3 on both sides and because it’s a negative you flip the sign so you end up with -1>n

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3 years ago

A sweater was on sale at %40 off the regular price. Ella saved $20 by buying the sweater on sale. What was the regular price of

Artyom0805 [142]

so she saved $20 and that was 40% of the regular price, let's say the regular price is "x".

if 20 is 40%, what is "x" or namely the 100%?

$\bf \begin{array}{ccll} amount0&\%\\ \cline{1-2} 20&40\\ x&100 \end{array}\implies \cfrac{20}{x}=\cfrac{40}{100}\implies \cfrac{20}{x}=\cfrac{2}{5}\implies 100=2x \\\\\\ \cfrac{100}{2}=x\implies 50=x$

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3 years ago

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Write a real world situation that could be modeled by the equation 30x=48+22x

Mariulka [41]

30x=48+22x
30x-22x=48
8x=48
x=6

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4 years ago

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Find the solution to dy/dt = 7 y<br><br> satisfying<br> y(9) = 5

AVprozaik [17]

$\rm \dfrac{dy}{dt}=7y,\qquad\qquad\qquad y(9)=5$

I'm not sure what methods you've learned up to this point but one option is to apply separation of variables:

$\rm \dfrac{dy}{y}=7dt$

and then integrate from there,

$\rm ln|y|=7t+c$

exponentiate to isolate y,

$\rm |y|=e^{7t+c}$

Apply exponent rule,

$\rm |y|=e^c e^{7t}$

rename this e^c as some new constant, perhaps A,

$\rm \pm y=A e^{7t}\qquad\qquad A>0$

This A can only be positive, non-zero, but absorbing the plus/minus fixes that restriction,

$\rm y=A e^{7t}\qquad\qquad A\ne0$

Use your initial information to solve for this unknown value A,

$\rm y(9)=A e^{7\cdot9}=5$

solving for A, dividing by the exponential,

$\rm A=5e^{-63}$

So we get a final result of

$\rm y(t)=5e^{-63}e^{7t}$

apply exponent rule again to get a better looking answer, and factor,

$\rm y(t)=5e^{7(t-9)}$

Lemme know if too confusing.

3 0

3 years ago