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sergeinik [125]

3 years ago

7

Aaron is bicycling on a bike trail at an average of 10 miles per hour. Jada starts cycling on the same trail 30 minutes later. I

f Jada averages 16 miles per hour, how long would it take her to pass Aaron? (Please show work)

1 answer:

shepuryov [24]3 years ago

7 0

Answer:

36 miles per hour

Step-by-step explanation:

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3 x + 2y equals negative 2

Tasya [4]

Question or statement?

6 0

3 years ago

WILL AWARD A MEDAL AND FIVE STARS!!!!

ycow [4]

Hello,

f(x)-2x-7

g(x)=-4x+3

(fog)(x)=f(g(x))=f(-4x+3)=-2(-4x+3)-7=8x-6-7=8x-13

(fog)(-5)=8*(-5)-13=-53

6 0

3 years ago

Use simpson's rule with n = 10 to approximate the area of the surface obtained by rotating the curve about the x-axis. compare y

Lubov Fominskaja [6]

y = ln x , 1 <= x <= 3, about x axis and n = 10, dy/dx = 1/ x

S = (b a) ∫ 2π y √( 1 + (dy/dx) ^2) dx

so our f(x) is 2π y √( 1 + (dy/dx) ^2)

(b - a) / n = / 3 = (3-1) / 30 = 1/15

x0 = 1 , x1 = 1.2, x2 = 1.4, x3 = 1.6 ....... x(10) = 3

So we have , using Simpsons rule:-

S10 = (1/15) ( f(x0) + 4 f(x1) + 2 f)x2) +.... + f(x10) )

= (1/15) f(1) + f(3) + 4(f(1.2) + f(1.6) + f(2) + f(2.4) + f(2.8)) + 2(f(1.4) + f(1.8) + f(2.2) + f(2.6) )

( Note f(1) = 2 * π * ln 1 * √(1 + (1/1)^2) = 0 and f(3) = 2π ln3√(1+(1/3^2) = 7,276)

so we have S(10)

= 1/15 ( 0 + 7.2761738 + 4(1.4911851 +

5 0

4 years ago

Can someone help pls

zhenek [66]

So you must be reflecting over the y=x line so your quadrates would be (4,-2) (5,-4) (3,-9)

7 0

3 years ago

If each slab of butter is one cup, and you want to double a recipe that calls for 1 and 2/3 cups of butter, how many slabs of bu

ycow [4]

Answer:

$1\frac{2}{3}\ slabs$

Step-by-step explanation:

Let

x -----> the number of slabs of butter

y ----> the number of cups of butter

we know that

The ratio is

$\frac{x}{y} =\frac{1}{1}$

so

$x=y$

That means-----> The number of slabs of butter must be equal to the number of cups of butter

In this problem

we have

$y=1\frac{2}{3}\ cups$

Remember that

$x=y$

so

The number of slabs of butter needed must be equal to the number of cups of butter

therefore

$x=1\frac{2}{3}\ slabs$

8 0

3 years ago