Skykeeper42

13 Questions
2 Answers

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please help

The consecutive angles of a particular trapezoid form an arithmetic sequence. If the largest angle measures $120^{\circ}$, what is the measure of the smallest angle?

Skykeeper42 May 1, 2021

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Pls help me

The vectors $\mathbf{a},$ $\mathbf{b},$ and $\mathbf{c}$ satisfy $\|\mathbf{a}\| = \|\mathbf{b}\| = 1,$ $\|\mathbf{c}\| = 2,$ and \[\mathbf{a} \times (\mathbf{a} \times \mathbf{c}) + \mathbf{b} = \mathbf{0}.\]If $\theta$ is the angle between $\mathbf{a}$ read more ..

Skykeeper42 Apr 25, 2021

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Please help!

In the figure below, $ABCD$ is a parallelogram, $AD=18$ and $DC=27$. Segments $\overline{EG}$ and $\overline{FH}$ are perpendicular to sides of the parallelogram as shown, and $EG=16$. What is the area of the parallelogram? read more ..

Skykeeper42 Apr 11, 2021

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733

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Please help me!

A sheet of 8-inch by 10-inch paper is placed on top of a sheet of $8 \frac{1}{2}$-inch by 11-inch paper, as shown. What is the area of the region of overlap in square inches? read more ..

Skykeeper42 Apr 7, 2021

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427

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Please Help

The length of the segment between the points $(2a, a-4)$ and $(4, -1)$ is $2\sqrt{10}$ units. What is the product of all possible values for $a$?

Skykeeper42 Apr 7, 2021

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Geometry Question

Two identical rectangular crates are packed with cylindrical pipes, using different methods. Each pipe has diameter 10 cm. A side view of the first four rows of each of the two different methods of packing is shown below.
read more ..

Skykeeper42 Apr 7, 2021

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Typo??

When you are about to post it says "I'am not a robot". Should it be "I am" or "I'm"??

Skykeeper42 Apr 7, 2021

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582

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Please Help me!

Two liters of a 30% acid solution are mixed with three liters of a 20% acid solution. What percent of the mixture is acid?

Skykeeper42 Apr 7, 2021

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626

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Please Help!

Arc $AC$ is a quarter-circle with center $B$. The shaded region $ABC$ is "rolled" along a straight board $PQ$ until it reaches its original orientation for the first time with point $B$ landing at point $B^{\prime}$. If $BC = \frac{2}{\pi}$ cm, what is read more ..

Skykeeper42 Apr 7, 2021

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PLEASE HELP!

Given that the point $(9,7)$ is on the graph of $y=f(x)$, there is one point that must be on the graph of $2y=\frac{f(2x)}2+2$. What is the sum of coordinates of that point?

Skykeeper42 Apr 6, 2021

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The answer was posted here: https://web2.0calc.com/questions/please-help_40910

Skykeeper42May 2, 2021