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3 years ago

10

Two tractors working together cultivated 23 of a field in 4 days. How long would it take each tractor to cultivate the whole fie

ld by itself if the first tractor can do the job 5 days faster than the second?

1 answer:

Serhud [2]3 years ago

5 0

Answer:

HHHH

Step-by-step explanation:

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Find the volume of the prism and please show work. (P.s it’s not 100 or higher)

Karolina [17]

3.5*12*11

solve it.............

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3 years ago

Guys Can you please help me with this math

Likurg_2 [28]

Answer:

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Step-by-step explanation:

7$-2.50$=4.50$

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A small jar of salsa contains 12 1/2 cup of salsa. A large jar of salsa contains 75 ounces. How many small jars of salsa is equa

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Step-by-step explanation:

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3 years ago

Evaluate the following double integral where a = 2y

Keith_Richards [23]

Change the order of integration.

$\displaystyle \int_0^1 \int_{2y}^2 \cos(x^2) \, dx \, dy = \int_0^2 \int_0^{x/2} \cos(x^2) \, dy \, dx \\\\ ~~~~~~~~ = \int_0^2 \cos(x^2) y \bigg|_{y=0}^{y=x/2} \, dx \\\\ ~~~~~~~~ = \frac12 \int_0^2 x \cos(x^2) \, dx$

Substitute $u=x^2$ and $du=2x\,dx$ .

$\displaystyle \frac12 \int_0^2 x \cos(x^2) \, dx = \frac14 \int_0^4 \cos(u) \, du = \frac14 \sin(u) \bigg|_{u=0}^{u=4} = \boxed{\frac{\sin(4)}4}$

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1 year ago

If a polynomial function f(x) has roots -9 and 7-i, what must be a factor of f(x)

Likurg_2 [28]

Hello from MrBillDoesMath!

Answer:

x + 9 and (x + ( i - 7)) are factors

Discussion:

If f(x) has roots -9 and 7-i then

f(x) = g(x)(x - (-9)) (x - (7-i)) ( g(x) is a polynomial of degree less than f(x))

That is, x + 9 and (x + ( i - 7)) are factors of f(x)

BTW: if the coefficients of f(x) are real (not stated in the Question) then the conjugate of 7-i, i.e. 7 + i, is also be a root.

Thank you,

MrB

3 0

3 years ago

Read 2 more answers