Paul Reilly
2022-09-11
Answered

Mason had 16 fewer pencils than Liam. When Mason gave 2 pencils to Liam, she had twice as many pencils as Mason. How many pencils did Mason have at first?

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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 2022-09-04

(${x}^{2}$ -39) - (x-7)(${x}^{2}$ + 3x -10) (x-2) I need to see the process, and please be surethat the process is correct.(I have the problem of mixing up steps, and I have it bad enoughalready)If anyone can, please give me a hand. These problems aren't in anybook they're on a worksheet.(x + 4) - (2x+3)(${x}^{2}$ - x - 2) (x2 + 2x -8)

asked 2022-09-03

Erys bought a treadmill on sale at 40% off. The original price was $949.95. What was the amount of discount on the treadmill?

asked 2022-08-20

If 1 kg = 2.2 lbs

How many pounds equal 120 kilograms?

lbs

How many pounds equal 120 kilograms?

lbs

asked 2022-08-18

find $P(-1<z<1)$ type in answer with 4 decimal places.

asked 2022-08-06

Solve the equation.

${x}^{-2}=4$

${x}^{-2}=4$