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Post New Question
All Questions
+0
231337 Questions
0
387
1
Electric cars
In the battle of electric vehicles (EVs), Tesla outsold Chevy by a ratio of 3 to 2 inthe month of February 2017. A year later, in the month of February 2018, Chevy’smonthly sale fell in half, while Tesla sold 2800 more vehicles than they did previously.
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Guest
Jan 10, 2021
0
417
1
Barry and the ice cream delimma
Barry runs an ice-cream shop and has 5 identical ice-cream-bar making machines,which he usually starts running at 7:00am so he would finish making all ice-creambars for the day at 9:00am. However, due to a power glitch at 7:18am, two of the ice-cream machines
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Guest
Jan 10, 2021
0
485
1
hard algebra
For a positive integer n, the nth triangular number is T(n) = n(n + 1)/2. For example, T(3) = 6, so the third triangular number is 6.
Determine the smallest integer b > 100 such that T(b + 1) - T(b) = T(x) for some positive integer
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Guest
Jan 10, 2021
0
452
3
Kinda confused
If $f(x)$ is a monic quartic polynomial such that $f(-1)=-1$, $f(2)=-4$, $f(-3)=-9$, and $f(4)=-16$, find $f(1)$.
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Guest
Jan 10, 2021
Jan 9, 2021
0
574
2
Fred must buy at least $21$ ounces of cheese at the store. The store only sells cheese in packs of $120$ gram packages. If there are $28.35$
Fred must buy at least ounces of cheese at the store. The store only sells cheese in packs of gram packages. If there are grams in ounce, then how many packages should Fred buy? (You may use a calculator on this
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Guest
Jan 9, 2021
0
378
1
counting problem
In a class of 30 students:
* 16 students take biology
* 10 students take history
* 12 students take science
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Guest
Jan 9, 2021
0
782
1
counting problem
A survey in 1996 asked households whether they had a VCR, a CD player or cable TV. 40 had a VCR. 60 had a CD player; and 50 had cable TV. 25 owned VCR and CD player. 30 owned a CD player and had cable TV. 35 owned a VCR and had cable TV. 10 households had
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Guest
Jan 9, 2021
0
421
1
need help with system
Solve
xy + x + y = 23
yz + y + z = 31
zx + z + x = 47
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Guest
Jan 9, 2021
0
430
1
prism geometry
Sally has a cube of side length $s$ units such that the number of square units in the surface area of the cube equals $\frac{1}{6}$ of the number of cubic units in the volume. She also wants to make a square for which the number of square units in the area
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Guest
Jan 9, 2021
0
449
1
help alg 1
A sequence \(T_n\) is given as: \(T_{1}=7;T_{2}=13;T_{3}=19;T_{4}=25\) such that the difference between every two consecutive terms is the same.
Find the value of \(T_{1}+T_{2}+T_{3}+\cdots+T_{50}\).
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Guest
Jan 9, 2021
-1
575
9
+31
help asap tysm
Dogs in the GoodDog Obedience School win a blue ribbon for learning how to sit, a green ribbon for learning how to roll over, and a white ribbon for learning how to stay. There are 100 dogs in the school.
62 have blue ribbons,
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skc123
Jan 9, 2021
0
414
1
3x^2 + x = 1
If 3x^2 + x = 1, then find 10x^3 + 27x^6.
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Guest
Jan 9, 2021
0
416
1
circle problem
In the figure shown below, the blue line is 8 units long and the red line is 12 units long. Find the area of the square in square units.
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Guest
Jan 9, 2021
0
361
1
range of trig function
Find the range of possible values of cos(x)^2 - sin(x)^2, where x is a real number.
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Guest
Jan 9, 2021
0
444
1
Find CD
Triangle ABC has AB=BC, AC = 16, and angle B = 90 degrees. AC is extended to D such that BD=17. Find the length of CD.
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Guest
Jan 9, 2021
0
441
2
HELP!!
What is the average of all positive integers that have four digits when written in base 3, but two digits when written in base 6? Write your answer in base 10.
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Guest
Jan 9, 2021
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280
0
angles
Pentagon \(ABCDE\) is inscribed in a circle with center at \(O\) and diameter \(AB\). Find the measure of \(\angle AED + \angle DCB\) in degrees.
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Guest
Jan 9, 2021
0
401
1
coordinates
The point (3, 2) is rotated 90◦ clockwise around the origin to point B. Point B is then reflected in the line y = 7 to point C. What are the coordinates of C?
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Guest
Jan 9, 2021
0
359
1
The magician Moolin
The magician Moolin can make two different spells: Thunder— two vials of dragon tears and five vials of liquid pearl. Lightning— three vials of dragon tears and two vials of liquid pearl. Moolin has vials of dragon tears and liquid pearl at a
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Guest
Jan 9, 2021
+1
483
3
+296
Can someone check if I'm right?
What is the exact value of:
The answer I chose is highlighted below
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lovesosa12
Jan 9, 2021
0
376
1
help geo
Points \(P\), \(Q\), \(R\) and \(S\) divide the respective sides of rectangle \(ABCD\) in the proportion \(1:2\). If the area of rectangle \(ABCD\) is \(1\), find the area quadrilateral \(PQRS\).
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Guest
Jan 9, 2021
0
2165
1
+296
What are the key features of the graphs of the trigonometric functions?
Select all correct trigonometric functions
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lovesosa12
Jan 9, 2021
0
351
2
helphelphelp pls answer fast
What is ? Express your answer as a common fraction in lowest terms.
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Guest
Jan 9, 2021
0
531
1
Help pls
Find the interval of all such that is in the interval [0,1).
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Guest
Jan 9, 2021
+2
430
2
+321
Need help please
For what values of j does the equation ( 2 x + 7 )( x - 5) = - 43 + jx have exactly one real solution?
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itachiuchihakujo
Jan 9, 2021
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