jatericrimson8b
2022-09-11
Answered

A small motor on a fishing boat can move the boat at a rate of 12 mph in calm water. Traveling with the current, the boat can travel 28 mi in the same amount of time it takes to travel 20 mi against the current. Find the rate of the current.

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asked 2021-05-13

A movie stuntman (mass 80.0kg) stands on a window ledge 5.0 mabove the floor. Grabbing a rope attached to a chandelier, heswings down to grapple with the movie's villian (mass 70.0 kg), whois standing directly under the chandelier.(assume that thestuntman's center of mass moves downward 5.0 m. He releasesthe rope just as he reaches the villian).

a) with what speed do the entwined foes start to slide acrossthe floor?

b) if the coefficient of kinetic friction of their bodies withthe floor is 0.250, how far do they slide?

asked 2020-10-18

Find a least squares solution of Ax=b by constructing and solving the normal equations.

$A=\left[\begin{array}{cc}3& 1\\ 1& 1\\ 1& 4\end{array}\right],b\left[\begin{array}{c}1\\ 1\\ 1\end{array}\right]$

$\stackrel{\u2015}{x}=$ ?

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How much must be invested now (a one-time investment) to reach $10,000 in 5 years assuming 6% annual interest, compounded monthly?

asked 2021-11-16

Write and absolute value equation that has the given solutions of x=3 and x=9

asked 2021-09-28

Use the discriminant to determine whether each quadratic equation has two unequal real solutions, a repeated real solution (a double root), or no real solution, without solving the equation.

$2{x}^{2}-6x+7=0$

asked 2022-09-11

80% of flour is obtained from wheat. How much wheat was ground if 2.4 tons of flour were obtained? How much flour will be obtained from 2.5 tons of wheat?

asked 2020-12-09

Solve the system of equations.

3(x-y)=y-3

$-2x+\frac{y}{2}=-11$

3(x-y)=y-3