Mutignaniz2
2022-09-11
Answered

The sum of two numbers is 63. If the larger number is 15 more than the other, what are the two numbers? Let u be the larger number and y be the smaller number.

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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.

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

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

asked 2021-09-28

Determine if the given problem is an equation or an expression. If it is an equation, then solve. If it is an expression, then simplify. 0.03(2x + 8000) + 0.05(3x + 2000)

asked 2021-05-12

Solve the equation.

${e}^{3x+2}=50$

asked 2022-09-02

Solve the equation and check the solution.

$\frac{3z}{4}+\frac{z}{5}=\frac{19}{2}$

$\frac{3z}{4}+\frac{z}{5}=\frac{19}{2}$

asked 2022-07-25

Suppose that f(x)= 3x +5 and g(x) = -2x+15.

a). Solve f(x)=0

b)Solve f(x) < 0

c) Solve f (x)= g(x)

d) Solve f(x) greater than or equal to g(x)

e)Graph y=f(x) and y= g (x) and label the point thatrespresents the solution to the equeation f(x)=g(x).

a). Solve f(x)=0

b)Solve f(x) < 0

c) Solve f (x)= g(x)

d) Solve f(x) greater than or equal to g(x)

e)Graph y=f(x) and y= g (x) and label the point thatrespresents the solution to the equeation f(x)=g(x).

asked 2022-07-27

Suppose it is known that the coffee cools at a rate of 1degree C when its temperature is 70 degrees C. The room is 20degrees C.

a) What does the differential equation become in thiscase?

b) sketch a direction field and use it to sketch the solution curve for the initial-value problem. What is the limiting value of the temperature?

c) Use Euler's method with step size h=2 minutes to estimate the temperature of the coffee after 10 minutes

a) What does the differential equation become in thiscase?

b) sketch a direction field and use it to sketch the solution curve for the initial-value problem. What is the limiting value of the temperature?

c) Use Euler's method with step size h=2 minutes to estimate the temperature of the coffee after 10 minutes