All Questions

459

please help

In right triangle ABC, AC = BC and angle C = 90. Let P and Q be points on hypotenuse AB, as shown below, such that angle PCQ=45. Show that AP^2 + BQ^2 = PQ^2. I think the first step is to rotate it 90 degrees counter clockwise around read more ..

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Guest Oct 25, 2020

414

A palindrome is a positive integer which reads the same forward and backwards, like 12321 or 8448

A palindrome is a positive integer which reads the same forward and backwards, like 12321 or 8448

How many 4-digit palindromes are divisible by 4?

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Guest Oct 25, 2020

660

How many integers between 200 and 300

How many integers between 200 and 300 have the sum of their digits equal to 7?

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Guest Oct 25, 2020

501

what is the probability

group of thirty-three people is selected at random. What is the probability that at least two of them will have the same birthday? (Round your answer to four decimal places.)

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Guest Oct 25, 2020

521

What are the coordinates of the midpoint

What are the coordinates of the midpoint of the segment whose endpoints are A(−1, 9) and B(4, 8) ?
Enter your answer, as decimals, in the boxes.

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Guest Oct 25, 2020

432

Dates can be written as month/day/year using integers 1 through 12

Dates can be written as month/day/year using integers 1 through 12 for the month, followed by the day of the month, followed by the last two digits of the year. The date 12/ 3/ 45 is an increasing sequence of consecutive digits, while 1/ 22/ 34, read more ..

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Guest Oct 25, 2020

511

Probability question

a deck contains 108 cards: 100 color cards - where there are 25 each of red, blue, green, and yellow - and 8 wild cards. Two cards are chosen without replacement from the deck. We say that the two cards match if any of these conditions hold: they read more ..

Guest Oct 25, 2020

565

If is an integer and the root(s)

If is an integer and the root(s) of the quadratic expression 1/2*x^2 + sx - 1/3 = 0 are integers, find the sum of all possible values of s.

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Guest Oct 25, 2020

Oct 24, 2020

437

Solve for x.

Solve for x.
√8x + 9 = x + 3

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Guest Oct 24, 2020

411

Graphing Functions

If we graph the function f(x)=((x-2)^2-9)/3, the x and y intercepts of the graph are connected to make a polygon. What is the area?

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Guest Oct 24, 2020

555

+1443

One more question.

Solve the system by substitution or elimination.

-8x + 4y = -2
4x - 2y = 1 read more ..

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SmartMathMan Oct 24, 2020

498

If m is a real number

If m is a real number and 2x^2+mx+18 has two distinct real roots, then what are the possible values of m? Express your answer in interval notation.

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Guest Oct 24, 2020

430

Find all values of c

Find all values of c such that c/(c - 5) = 4/(c - 1). If you find more than one solution, then list the solutions you find separated by commas.

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Guest Oct 24, 2020

636

+1443

Please Help!

Solve by elimination.

Bill has started a small company making organic honey. He makes large and small containers. He has found the costs of running his business to have a linear relationship which can be 5.5x + 7.5y = 930. He wants read more ..

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SmartMathMan Oct 24, 2020

603

Solve for x. 3√x+2=√x+4

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Guest Oct 24, 2020

559

If we express 3x^2 + 2x - 4 in the form a(x - h)^2 + k , then what is k?

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Guest Oct 24, 2020

594

There are two distinct solutions

There are two distinct solutions x to the equation 18 + 5x^2 = 80x. If each solution is rounded to the nearest integer, and then these two integers are multiplied together, what is the result?

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Guest Oct 24, 2020

417

The sum of all the digits used to write the whole numbers 10 through 13

The sum of all the digits used to write the whole numbers 10 through 13 is 1+0+1+1+1+2+1+3 = 10. What is the sum of all the digits used to write the whole numbers 1 through 170, inclusive?

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Guest Oct 24, 2020

594

+407

Need help please ASAP

1) What is the remainder when is divided by 13?

2) What is the remainder when is divided by 35?
read more ..

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ss333 Oct 24, 2020

475

+92

Pls help thanks

What is the minimum value that can be achieved by the expression
$$x^2+y^2+z^2+2xy+2yz+2zx-3x-3y-3z-4$$
over all triples of real numbers
$x,y,z?$ read more ..

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AaronWang2004 Oct 24, 2020

416

How many integers between 200 and 300 have the sum of their digits equal to 16?

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Guest Oct 24, 2020

547

+407

Need help please ASAP

1) What is the smallest positive integer n such that the rightmost three digits of n! and (n+1)! are the same?

2) What is the sum of the hundreds, tens and units digits of N?
read more ..

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ss333 Oct 24, 2020

610

HELP

Salvatore ran 2.457 km on Saturday and 3.169 km on Sunday.
a) How far did Salvatore run in all?
b) How much further did he run on Sunday than on Saturday?

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Guest Oct 24, 2020

597

+92

Pls help thanks

Given $a=2^{2017},b=3^{2017},c=4^{2017},d=5^{2017},$ and let \begin{align*}
x&=(a+b)(c+d),\\
y&=(a+c)(b+d),\\
z&=(a+d)(b+c).
\end{align*} <#> Rank $x,y,z$ from greatest to least, and express your answer as an read more ..

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AaronWang2004 Oct 24, 2020

447

HELP PLEASE!

a). joline bought a pair of skates for $79.95.
She also bought a pullover for $45.25.
Estimate the total cost of joline's purchases.
read more ..

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Guest Oct 24, 2020

All Questions ⁺⁰231295 Questions

please help

A palindrome is a positive integer which reads the same forward and backwards, like 12321 or 8448

How many integers between 200 and 300

what is the probability

What are the coordinates of the midpoint

Dates can be written as month/day/year using integers 1 through 12

Probability question

If is an integer and the root(s)

Solve for x.

Graphing Functions

One more question.

If m is a real number

Find all values of c

Please Help!

Solve for x. 3√x+2=√x+4

If we express 3x^2 + 2x - 4 in the form a(x - h)^2 + k , then what is k?

There are two distinct solutions

The sum of all the digits used to write the whole numbers 10 through 13

Need help please ASAP

Pls help thanks

How many integers between 200 and 300 have the sum of their digits equal to 16?

Need help please ASAP

HELP

Pls help thanks

HELP PLEASE!

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