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Post New Question
All Questions
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234777 Questions
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+934
HELP ME!! Precalc/Trig
Let $x_1,$ $x_2,$ $\dots,$ $x_9$ be real numbers such that \[\cos x_1 + \cos x_2 + \dots + \cos x_9 = 0.\]
Find the maximum value of $\cos 3x_1 + \cos 3x_2 + \dots + \cos 3x_9.$
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HELPMEEEEEEEEEEEEE
Mar 31, 2020
0
438
1
Please help.
Simplify \[\sin 70^\circ \cos 50^\circ + \sin 260^\circ \cos 280^\circ.\]
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Guest
Mar 31, 2020
0
509
2
can you find the height
a can has 3 tennis balls in it the tennis balls have a radius of 3 cm what is the height of the can Explain your reasoning
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Guest
Mar 31, 2020
+1
2023
7
+343
Please! Anyone help As soon as possible!
The expression $2\cdot 3 \cdot 4\cdot 5+1$ is equal to 121, since multiplication is carried out before addition. However, we can obtain values other than 121 for this expression if we are allowed to change it by inserting parentheses. For example, we can
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nchang
Mar 31, 2020
-2
917
1
+980
I need help
Calculate $\sqrt{60x} \cdot \sqrt{12x} \cdot \sqrt{63x}$ . Express your answer in simplest radical form in terms of $x$. Note: When entering a square root with more than one character, you must use parentheses or brackets. For example, you should enter
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qwertyzz
Mar 31, 2020
0
637
1
please help
Alex needs to varnish the top and the bottom of a dozen rectangular boards. The boards are 8 feet long and 3 feet wide. Each pint of varnish covers 125 square feet and costs $3.50.
a. What is the total area that Alex needs to varnish?
b. How
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Guest
Mar 31, 2020
0
499
3
Hmm, Please Help
The expression
cos x + cos 3x + cos 7x + cos 9x
can be written in the equivalent form a cos bx cos cx cos dx for some positive integers a, b, c, and d.
Find a + b + c + d.
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Guest
Mar 31, 2020
+1
667
1
Describe a single transformation that takes ABC to A'B'C'.
Describe a single transformation that takes ABC to A"B"C".
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Guest
Mar 31, 2020
-1
1060
1
+980
Help
The square root of $h$ is greater than $\dfrac{10}{3}$ and less than $\dfrac{24}{5}$. How many integer values of $h$ satisfy this condition?
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qwertyzz
Mar 31, 2020
0
405
1
help
From midnight to noon each day,how many times does the minute hand on a clock pass 8?
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Guest
Mar 31, 2020
0
532
4
HELPPP
Vi = E.e ^-t/cr
if having been fully charged to voltage e=10v c=250uf it is allowed to discharge through a 3.3k resistor determine the values of capacitor voltage after time; t=0, t=1, up to t=0
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Guest
Mar 31, 2020
+9
527
1
+1072
Help Please!!!
Find the constant k so that
for all positive real numbers x and y with y ≠ 1.
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SpongeBobRules24
Mar 31, 2020
0
428
1
integers
What is the sum of the integers between sqrt12 and the sqrt 50?
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Guest
Mar 31, 2020
0
542
3
Need help! Please help if you can!
If the arc of ABC is 244 degrees, what is the number of degrees in the measure of ABC?
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Guest
Mar 31, 2020
-4
668
1
+73
2. Write a rule that describes this transformation.
2. Write a rule that describes this transformation.
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GAMEMASTERX40
Mar 31, 2020
0
344
0
what is answer
if Jonny has 20 soups and gets 50 more but the
said divide and it's minus how can u answer this
Guest
Mar 31, 2020
0
548
4
241666666667/11000000000000 simplified
what is 241666666667/11000000000000 simplified
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Guest
Mar 31, 2020
-2
565
1
+980
Help please
For how many real values of x is an integer?
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qwertyzz
Mar 31, 2020
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