All categories

3 years ago

Pls help

1 answer:

N76 [4]3 years ago

5 0

A. 45/100 = 9/20
B. 9/20 = 27/x
9x=540
x = 6
She was assigned 60 problems (showing your work is practically justification in its on right)
C. 60-27
Yolanda still has 33 problems to do.
Hope this helped

You might be interested in

Question 8 (06.02 LC)

kodGreya [7K]

Question 8.
The best answer would be A, two times y divided by 7.

Question 9.
The distributive property. Or A.

Question 10.
5(2+y) would be the answer. So, D.

Hope this helps!

8 0

2 years ago

Hurricane winds can be as strong as 150 miles per hours. If stick carried by a hurricane wind is flying at 130 mph, how far ( in

slavikrds [6]

Answer:

I believe it's 6.5 hours

Step-by-step explanation:

130/20=6.5

Not sure tho.

3 0

2 years ago

Read 2 more answers

What algebraic property is T - 6 = -4

AleksandrR [38]

5.

—————————————————————

3 0

2 years ago

Read 2 more answers

) A store is having a 30% off sale. Michelle uses the expression 0.7p and Stuart uses the expression p-0.3p. Who is using the co

Aleonysh [2.5K]

Answer:michelle

Step-by-step explanation: it is 70% of the cost since it’s 30% of the original

3 0

2 years ago

Find a linear second-order differential equation f(x, y, y', y'') = 0 for which y = c1x + c2x3 is a two-parameter family of solu

Alisiya [41]

Let $y=C_1x+C_2x^3=C_1y_1+C_2y_2$ . Then $y_1$ and $y_2$ are two fundamental, linearly independent solution that satisfy

$f(x,y_1,{y_1}',{y_1}'')=0$
$f(x,y_2,{y_2}',{y_2}'')=0$

Note that ${y_1}'=1$ , so that $x{y_1}'-y_1=0$ . Adding $y''$ doesn't change this, since ${y_1}''=0$ .

So if we suppose

$f(x,y,y',y'')=y''+xy'-y=0$

then substituting $y=y_2$ would give

$6x+x(3x^2)-x^3=6x+2x^3\neq0$

To make sure everything cancels out, multiply the second degree term by $-\dfrac{x^2}3$ , so that

$f(x,y,y',y'')=-\dfrac{x^2}3y''+xy'-y$

Then if $y=y_1+y_2$ , we get

$-\dfrac{x^2}3(0+6x)+x(1+3x^2)-(x+x^3)=-2x^3+x+3x^3-x-x^3=0$

as desired. So one possible ODE would be

$-\dfrac{x^2}3y''+xy'-y=0\iff x^2y''-3xy'+3y=0$

(See "Euler-Cauchy equation" for more info)

6 0

3 years ago