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Post New Question
All Questions
+0
230619 Questions
-1
443
2
+328
The three digit arrow
A counting number is called a “three-digit arrow” if its tens digit is larger than both the hundreds digit and the units digit. For example,143,253,191are all arrownumbers, but 221and 405 are not.How many three-digit arrows are there?
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Potatobird
Feb 7, 2021
0
408
2
quadratic
The quadratic x^2 + bx + 16 = 0 has a double root. Find all possible values of b.
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Guest
Feb 7, 2021
0
240
1
right triangle
Right angled triangle BCA. The points D and E lie on the hypotenuse such that AD= DE=EB.
Also CD= 7, CE=9
What is the length of the hypotenuse AB?
read more ..
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Guest
Feb 7, 2021
0
344
1
help with pyramid
What is the surface area of this triangular pyramid?
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Guest
Feb 7, 2021
0
214
0
HELP ME PLZ so IMPORTANT :(
the approximate value of the area between the graph of the f(x)=3x^2+2 and the intergral [0,1] by choosing n=5 rectangales is given by :
a) 18 over 5 sq units
b) 68 over 5 sq units
read more ..
Guest
Feb 7, 2021
0
542
1
+68
HELP ASAP!!! Tysm :)
On a rainy day, every kid at Margo's school brings a raincoat, an umbrella, or both. And 8% of the kids bring both. The total number of umbrellas brought is twice the total number of raincoats.
What percent of the kids bring only an umbrella?
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piano123
Feb 7, 2021
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232
0
triangle
In a triangle $\Delta ABC$ satisfying $ \dfrac a3 = \dfrac b2 = \dfrac c2$. Find $\cos A$.
Guest
Feb 7, 2021
0
352
1
logarithms
If $\log _{ 16 }{ 49 } =a\quad ,\log _{ 7 }{ 2.5 } =b$ then ${ 4 }^{ ab+1 }\quad =\quad ?$
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Guest
Feb 7, 2021
0
439
1
As shown in the diagram, PQ/QR = 1/3. Find [PAB]/[QAB].
As shown in the diagram, PQ/QR = 1/3. Find [PAB]/[QAB].
If I'm not mistaken, PQB and PAB are similar, so the two triangles inside them are also similar.
I
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Guest
Feb 7, 2021
0
1180
2
+28
2.05 Quiz: Radical Functions
Which transformations have been performed on the graph of f(x)=x√3 to obtain the graph of g(x)=−2x√3−1?
Select each correct answer.
reflect the graph over the x-axis
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SummerBreeze03
Feb 7, 2021
0
346
1
similar triangles
Given AD = 8, AC = 12, BC = 15. Find the value of x.
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Guest
Feb 7, 2021
0
230
0
graph question
Five vertices are labeled 1, 2, 3, 4, 5. In how many ways can edges be drawn between some pairs of these vertices so that the result is a connected graph that is a tree?
Guest
Feb 7, 2021
0
233
0
polynomial problem
For what value of k is the remainder 0 when the function g(x)=-3xk^3+kx-2 is divided by (x-2)?
Guest
Feb 7, 2021
-1
424
3
+328
The baseball league
A baseball league has Nt eams, and each team plays with every other team twice.There are a total of 90 games in a season. How many teams are there?
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Potatobird
Feb 7, 2021
0
312
2
Stuck on a problem...
PROBLEM:
In the SuperLottery, three balls are drawn (at random) from ten white balls numbered from 1 to 10, and one SuperBall is drawn (at random) from ten red balls numbered from 11 to 20. When you buy a ticket, you choose three numbers
read more ..
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Guest
Feb 7, 2021
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342
1
help plz
The square root of is greater than 2 and less than 35. How many integer values of t satisfy this condition?
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Guest
Feb 7, 2021
+1
368
2
find answer
mr r bought some books and pen. the ratio of the books to pens is 2.5 he give 3/4 of books to A and 34 pens to B.The ratio of pens to books that. he has is now 2:3 How many books and pens did mr r buy?
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Guest
Feb 7, 2021
0
234
0
IB Stats
Need help solving this, dont know where to start
Guest
Feb 7, 2021
0
682
1
MATH
Ben has $19 to spend.
He spent $7.25, including tax, to buy a notebook.
He needs to save $2.75 but he wants to buy a snack.
If pretzels cost $0.50 per package including tax, what inequality would show the maximum number of packages
read more ..
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Guest
Feb 7, 2021
+1
346
3
+7
help ASAP
Bag A contains white and red balls. Bag B contains white and red balls. One of the two bags will be chosen at random, and then two balls will be drawn from that bag at random without replacement. What is the probability that the two balls drawn will be
read more ..
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IRONANT
Feb 7, 2021
0
1215
1
In ΔJKL, j = 93 cm, k = 82 cm and l=86 cm. Find the measure of ∠J to the nearest degree.
In ΔJKL, j = 93 cm, k = 82 cm and l=86 cm. Find the measure of ∠J to the nearest degree.
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Guest
Feb 7, 2021
0
315
1
algebra problem
A baker melts 80 grams of chocolate that contains 40% cocoa and mixes it with 60grams of his secret mixture. The result is a chocolate with 55% cocoa. What is the percent of cocoa in the baker's secret mixture?
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Guest
Feb 7, 2021
0
398
1
help pls
Samantha mixes some amount of 25% sugar syrup with x grams of 10% sugar syrup.The result is 120 grams of 15% sugar syrup. How many grams of 25% sugar syrup did Samantha use?
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Guest
Feb 7, 2021
0
270
1
help geometry
Find the value of x in the diagram below.
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Guest
Feb 7, 2021
0
279
1
counting
A lecture hall contains 20 chairs, all lined in a row. What is the number of ways that five chairs can be chosen, so that no two chairs are adjacent, and neither chair at the ends are chosen?
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Guest
Feb 7, 2021
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