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Galina-37 [17]
3 years ago
6

Of 55 cars making up a freight train, 37 are boxcars. what fraction of the cars are not boxcars?​

Mathematics
1 answer:
PolarNik [594]3 years ago
4 0

Answer:

18/55

Step-by-step explanation:

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LO bisects &NLM, LM= 22, NO = 6, and LN= 14. What is the approximate value of x?
ser-zykov [4K]

Answer:

9.4

Step-by-step explanation:

Given :

LM= 22, NO = 6, and LN= 14 ; MO = x

Since O bisects the triangle ;

LN / NO = LM / MO

14 / 6 = 22 / x

Cross multiply :

14 * x = 22 * 6

14x = 132

Divide both sides by 14

14x/14 = 132 / 14

x = 9.428

x = 9.4 ( 1 decimal place)

5 0
3 years ago
Determine whether each first-order differential equation is separable, linear, both, or neither. 1. ????y????x+????xy=x2y2 2. y+
Mkey [24]

Answer:

a) Linear

b) Linear

c) Linear

d) Neither

See explanation below.

Step-by-step explanation:

a) \frac{dy}{dx} +e^x y = x^2 y^2

For this case the differential equation have the following general form:

y' +p(x) y = q(x) y^n

Where p(x) =e^x and q(x) = x^2 and since n>1 we can see that is a linear differential equation.

b) y + sin x = x^3 y'

We can rewrite the following equation on this way:

y' -\frac{1}{x^3} y= \frac{sin (x)}{x^3}

For this case the differential equation have the following general form:

y' +p(x) y = q(x) y^n

Where p(x) =-\frac{1}{x^3} and q(x) = \frac{sin(x)}{x^3} and since n=0 we can see that is a linear differential equation.

c) ln x -x^2 y =xy'

For this case we can write the differential equation on this way:

y' +xy = \frac{ln(x)}{x}

For this case the differential equation have the following general form:

y' +p(x) y = q(x) y^n

Where p(x) =x and q(x) = \frac{ln(x)}{x} and since n=0 we can see that is a linear differential equation.

d) \frac{dy}{dx} + cos y = tan x

For this case we can't express the differential equation in terms:

y' +p(x) y = q(x) y^n

So the is not linear, and since we can separate the variables in order to integrate is not separable. So then the answer for this one is neither.

4 0
3 years ago
Which expression is equivalent to 4 (x + 2)?<br> 6 x<br> 4 (x) + 4 (2)<br> 4 (x) + 4<br> 8x
nata0808 [166]

Answer:

4 (x) + 4 (2)

Step-by-step explanation:

7 0
4 years ago
Read 2 more answers
(x-81/10)&gt; (68-81/10) and (x-81/10)&lt;(68-81/10)
Fofino [41]

Answer:

what you need should be testing for u

6 0
3 years ago
Find The Surface Area Of The Prism!
Dmitry_Shevchenko [17]

Answer:

288

Step-by-step explanation:

the formula is 2(lw+wh+hl)

length - 8

width - 8

height 5

substitute the values and you get

2(64+40+40)

2(144)

= 288

7 0
3 years ago
Read 2 more answers
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