Madeline Lott
2021-12-13
Answered

Solve for $x:16\cdot {4}^{x+2}-16\cdot {2}^{x+1}+1=0$ ?

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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 2021-05-13

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 2022-08-30

the length of a rectangle is 3 in. less than twice its width. if the perimeter of the rectangle is 8 in., what are the dimensions of the rectangle?

asked 2021-09-30

Solve the equation.

$5{x}^{2}=2x-3$

asked 2022-09-14

I scored a mean of 80 marks for 3 tests, scoring 20 marks more for Science than Maths and 5 marks less for History than Maths. What was the score on the Maths test?

asked 2022-08-30

$x=\frac{63}{3},\text{}y=\frac{25}{6},\text{}z=\frac{57}{9}$ evaluate the variable expression x+y+z for the given values of x, y, and z

asked 2021-06-11

Convert polar equation to a rectangular equation. Then determine the graph’s slope and y-intercept.

$r\mathrm{sin}(0-\frac{\pi}{4})=2$