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Willie
Questions and answers by visitors named
Willie
Questions (30)
If n is an integer, how many different values of n satisfy the inequality
-4 ≤ 3n ≤ 87? a) 32 b) 31 c) 30 d) 29 e) 28 i got
5 answers
2,152 views
Maria answered all the problems on her math test. She answered 80 percent of the problems correctly. If she answered 6 problems
4 answers
1,032 views
A sprinter runs at a speed of 3.00 m/s on a circular track that has a radius of 40.00 m. Find the centripetal acceleration of
4 answers
2,684 views
Two boats, A and B, travel with a velocity of 4.90 m/s across a river of width 72.0 m. The river flows with a velocity of 2.50
3 answers
1,799 views
A bus travels from west to east with a velocity of 11.5 m/s. A marble rolls on the surface of the bus floor with a velocity of
3 answers
1,538 views
Tracy swims across a stream of width 40.0 m in 33.0 s when there is no current. She takes 59.0 s to cover the same distance when
4 answers
1,127 views
An object in uniform circular motion moves at a constant speed around a circle with a fixed radius. Why is the object said to be
2 answers
928 views
A hiker throws a ball at an angle of 21.0 degrees above the horizontal from a hill 21.0 m high. The hiker's height is 1.750 m.
3 answers
916 views
A ball is tied to an elastic string of length 8.0 m and swung in a horizontal circle with a velocity of 0.8 m/s. When a metallic
6 answers
1,777 views
Two grenades, A and B, are thrown horizontally with different speeds from the top of a cliff 70 m high. The speed of A is 2.50
3 answers
1,375 views
Which of the followning equations shows the relationship between the potential energy and height? Explain how you know.
potential
2 answers
1,001 views
If lynn can type a page in p minutes what piece of a page can she type ing 5 minutes?
5/p p+5 p-5 p/5 1-p-5
3 answers
426 views
A .4 kg ball is attached to a spring with spring constant 12 N/m. If the ball is pulled down .2m from the equilibriu, and
1 answer
397 views
On your first trip to Planet X you happen to take along a 200g mass, a 40.0 cm long spring a meter tick and a stop watch. You're
2 answers
663 views
A point on a string undergoes simple harmonic motion as a sinusoidal wave passes. When a sinusoidal wave with speed 24 m/s,
1 answer
619 views
The length of a rectangular jewelry box is 5 inches more than twice the width. The perimeter is 28 inches. Find the length and
4 answers
1,585 views
If 1-x -2x -3x = 6x-1 what is the value of x?
4 answers
658 views
Very weird SAT "sentence completion" question
The literal meaning of astronaut is "---" a) Space Jockey b) Cosmic navigator c)
1 answer
445 views
x-z=7
x+y=3 z-y=6 For the above system of three equations x= ?
2 answers
655 views
Please help exponent questions =[
If 2^x = 10, then 2^2x = If 2a^2 + 3a - 5a^2= 9, then a-a^2= If 9^x = 25, then 3^x+1 = If b^3=4
1 answer
285 views
The graph of y = 2^x-3 can be obtained by shifting the graph of y= 2^x
a) 3 units to the right b) 3 units to the left c) 3 units
4 answers
2,059 views
The pressure in a fire hose is 20 atm. How high can a firefighter spray water from this hose?
One atm is about 1×105 Pa. The
1 answer
388 views
True or false:
If two planets have the same mass but the second one has twice the gravity, it must have four times the radius
1 answer
285 views
Jared is making 1-1/3 of a recipe that calls for 2-1/2 cups of flour. How much flour will Jared need to use?
2 answers
908 views
Is the following statement always, sometimes, or never true for numbers greater than zero: "In equivalent ratios, if the
6 answers
1,511 views
How to complete the function table for each equation
4 answers
1,441 views
A ball weighing 1.78 N is shot through a launcher, achieving a speed (from rest) of 41 m/s in 0.28 second. What is the mass of
1 answer
429 views
An expression for the calculation triple the product of 5 and 4
4 answers
2,017 views
Maizie earns a base salary of $200 per month and 8% commission on all sales she makes. Maizie's monthly pay in dollars can be
2 answers
562 views
Possible "leave statements" in conclusions might include which of the following?
1 answer
39 views
Answers (18)
Where is 15
se the equation y = 3.5 x to answer the questions. (a) What is the slope of y = 3.5 x and what does this mean? (Use at least one complete sentence to explain your answer.) (b) What is the y - intercept? (Use at least one complete sentence to explain your
I think I got it the answer is always true, but why
Thank you so much
I got the answer nvm =]
Thank you so much!
The first rule sends (x, y) to (x - 9, y - 2). That is, it slides every point to the left nine units and down two units. The second rule slides every point to the right 1 unit and down 2 units. The composition is combining the two transformations. In this
In chemistry class you might write an equation in that fashion to suggest that 1 molecule of water is composed of the "sum" of 1 oxygen atoms and 2 hydrogen atoms. In your math work, since you are doing the topic of "direct variation" you are expected to
If you start at (0, 0) and move right 3 and up 6, you arrive at (3, 6). Then, starting at (3, 6) if you move right 5 and up -5 (i.e. down 5), you end up at (8, 1). The resultant is the vector from your original starting point to your final landing spot. So
Do you know how to find the asymptotes of a hyperbola with this equation? [x^2]/4 - [y^2]/9 = 1 Hint: To express this in the format x^2/a^2 - y^2/b^2 = 1, what are the values of a and b? How can a and b be used to find the equations of the asymptotes?
Let n = number of nickels. Let d = number of dimes. Let q = number of quaraters. n + d + q = ____ 5n + 10d + 25q = 450 (Why?) d = n + 7 (Why?) Rewrite the first to equations but use (n + 7) everywhere you see d. n + (n + 7) + q = ??? 5n + 10(n + 7) + 25q =
However, if the equation was this instead ... 2y + 16x = 0 ... then you do have a diagonal line that has both an x-intercept and a y-intercept and a slope that is not zero but not undefined. I think it is a negative slope. Can you figure out the
How many parking spaces have a number between 27 and 73? (Include the number 27 in that.) How many parking spaces are there altogether, numbers 1 to 73? The ratio of those numbers will give you the probability, assuming that "randomly parks" means the
y varies inversely with x means that y = 1/x times some constant k. So, y = k/x is the general form of an equation of variation where y varies inversely as x. But now you also know that for a specific value x = 6, y = 1. Plug those values in to your
An arithmetic sequence is one in which the differences between neighboring numbers is the same. The only arithmetic sequences you can get from that set of 5 numbers are: (1, 2, 3), (2, 3, 4), (3, 4, 5), or (1, 3, 5). So only 4 choices. How many ways can
Use the inverse cosine feature of your calculator. It might look like cos with a little raised -1 next to it. invcos (9/20) = ??? Your answer will be in degrees or radians depending on your calculator setting. Try invcos (1/2). If it gives you 60 then your
If you use a calculator with an inverse sine function, you can enter sin^-1 (0.1) = and find out what the acute angle value is. Then you can use that and plug it into the cos, tan, cot, csc, and sec functions of your calculator. If you don't have a
I think these are trick questions and you have the right idea. 3x = 9 is the equation of a vertical line. There is no y in the equation, so there is no "y = mx + b" form for a vertical line. The simplest way to express this line is x = 3. Its x-intercept
