Tutors Answer Your Questions about Geometric formulas (FREE)
Question 121685: Can you explain how to do these problems? thanks
19. the second angle of a triangle is two times as large as the first. The third angle is 10 more than the second angle. Find the measure of the first angle.
20. The perimeter of a rectangular writing pad is 28 inches. The length is 1 inch less than twice the width. Find the width.
thanks again
Click here to see answer by Fombitz(13828)   |
Question 122435: Please help.
A rancher has 100 meters of fencing to enclose two adjacent rectangular corrals.
4x + 3y = 100
Write the area A of the enclosed region as a function of x
So far this is what I’ve got-I figured out the function of x and plugged it into the Area formula, but that’s where I get stuck.
P = 100
4x + 3y = 100
4x + 3y – 3y = – 3y + 100
A = 2x(y)
I know x = 10 and y = 20 works for the perimeter, but don’t know how to write it to show that. When I graph (making A correspond to y and the y correspond to the x), I don’t get the same area as in the table.
I need to add more values to the table.
X Y Area
2 92/3 368/3 ≈123
4 28 224
Thank you for any help you can give!!!
Click here to see answer by scott8148(6628)  |
Question 123278: your class is building a diorama of the National Mall in Washington, DC using scale 1 in. = 1.5 ft.
On the mall the distance between Washington Monument and the Lincoln Memorial is approximately 3/4 mile. What distance should you use in your diorama??
how would i solve this with out it confusing me cause i don't get math and it's confusing!
Click here to see answer by solver91311(16897)  |
Question 123278: your class is building a diorama of the National Mall in Washington, DC using scale 1 in. = 1.5 ft.
On the mall the distance between Washington Monument and the Lincoln Memorial is approximately 3/4 mile. What distance should you use in your diorama??
how would i solve this with out it confusing me cause i don't get math and it's confusing!
Click here to see answer by bucky(2189) |
Question 125595: What is a gemetric construction of an altitude, incenter, circumcenter, and angle bisector? I'm really having trouble trying to understand how to match the figures with the construction. Can anyone please help me?!!!! Thank you.
Click here to see answer by stanbon(57412) |
Question 125751: Hello,
My name is Lauren and I have a quick question that I really need help with please....
On my worksheet, there is a Punnett Square. And Inside the Punnett Square is; XX, XY, XX, XY in each square starting from top to bottem. (4 Spaces).
The following questions that I REALLY need help with are these;
1) What is the probability that the child will be a boy?
2) What is the probability that the child will be a girl?
3) Which parent above determines the sex of the child?
I tried my best answering these questions according to the Punnett Square, but I just didn't do it correctly & didn't understand it. Can you Really PLEASE help me?
Thank You Very Much! :)
Email me back ASAP [please].
Thanks Again!
Click here to see answer by applesrbest(7) |
Question 127097: Please help me. Thankyou
Biting an unpopped kernel of popcorn hurts! As an experiment, a self-confessed connoisseur of cheap popcorn carefully counted 773 kernels and put them in a popper. After popping, the unpopped kernels were counted. There were 86.
(a) Construct a 90 percent confidence interval for the proportion
of all kernels that would not pop.
(b) Check the normality assumption.
(c) Try the Very Quick
Rule. Does it work well here? Why, or why not?
(d) Why might this sample not be typical?
Click here to see answer by stanbon(57412) |
Question 127096: Please help me. I need desperate help. Thank you
A sample of 20 pages was taken without replacement from the 1,591-page phone directory
Ameritech Pages Plus Yellow Pages. On each page, the mean area devoted to display ads was measured
(a display ad is a large block of multicolored illustrations, maps, and text). The data (in
square millimeters) are shown below:
0 260 356 403 536 0 268 369 428 536
268 396 469 536 162 338 403 536 536 130
a)Construct a 95 percent confidence interval for the true mean.
(b) Why might normality be an issue here?
c) What sample size would be needed to obtain an error of ±10 square millimeters
with 99 percent confidence?
(d) If this is not a reasonable requirement, suggest one that is.
Click here to see answer by stanbon(57412) |
Question 131494: I have a TI-83 and I want to know how to graph a Logarithmic spiral with the geometric progression of 1.4.
I believe the equation is:
r = ae^(b[theta])
In fact I want to know how this spiral can be graphed by hand...
Thanks one million!
Bill
Click here to see answer by stanbon(57412) |
Question 132708: Sarah needs to borrow $1500 for her school tutition. She borrows the money on a six monthe short term note that charges simple interest. After 6 months, she owes $90.00 in interest. What is the simple interest rate being charged on this note?
Click here to see answer by stanbon(57412) |
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