Hrefnui9
2022-09-13
Answered

An insurance company crashed four cars in succession at 5 miles per hour. The cost of repair for each of the four crashes was$423, $456, $410, $237. Compute the range, sample variance, and sample standard deviation cost of repair.

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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 2022-05-19

Solve for a: 13a=3.

asked 2021-12-12

How do you find and simplify $f(x+h)-f\left(x\right)$ and $\frac{f(x+h)-f\left(x\right)}{h}$ given $f\left(x\right)=7{x}^{2}-1$ ?

asked 2022-09-05

The # painted turtles in a pond is eight more than twice the # of bullfrogs. Let f represent the # of bullfrogs. Write an expression for the # of painted turtles.

asked 2022-07-30

Given

$G(t)=4-5t$

write

$G(-2+h)-G(-2)$

in simplest form.

$G(t)=4-5t$

write

$G(-2+h)-G(-2)$

in simplest form.

asked 2021-09-20

Find a polar equation for the curve represented by the given cartesian equation.

$y=2$