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357

vectors

Let a=<5,-3,0> and b=<1,-1,5>. Show that there are scalars s and t so that sa +tb =<-9,5,5>

Guest Sep 27, 2020

626

+117

Looks hard

If m is a 3-digit positive integer such that lcm[8m,10^10]=4*lcm[m,10^10], then what is the value of m?

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DragonXlayer Sep 27, 2020

413

word problem

Mr. and Mrs. Johnson and their eight-year-old son visited a museum. They paid a total of $16.50 for their museum admission tickets. A group of tourists consisting of 17 adults and 8 children paid $138 for their admission tickets to the same musuem.
a) read more ..

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Guest Sep 27, 2020

395

geometry

Find angle JGF.

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Guest Sep 27, 2020

623

Help Please

Given thatfind

read more ..

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Qwerty123 Sep 27, 2020

611

geometry problem

Equilateral △ABC has a side length of 1 and the three inscribed squares have sides lengths a, 2a, and 3a as shown. Compute a.

read more ..

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Guest Sep 27, 2020

460

Answer

[16/(16+10)]/[1/(1+3)]

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Guest Sep 27, 2020

620

help

If $a, b, c$ are positive integers less than 13 such that
$2ab+bc+ca \equiv 0\pmod{13}$
$ab+2bc+ca \equiv 6abc\pmod{13}$
$ab+bc+2ca \equiv 8abc\pmod {13}$
then determine the remainder when $a + b + c$ is divided by $13$. read more ..

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Guest Sep 27, 2020

508

geometric ratios

Point A, B , C and D lies on a straight line
AB : BD = 1:5
AC : CD = 7:11
Work out AB : BC : CD read more ..

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Guest Sep 27, 2020

513

I need help on this question plzzzzz

A right triangle with integer leg lengths is called "cool'' if the number of square units in its area is equal to twice the number of units in the sum of the lengths of its legs. What is the sum of all the different possible areas of cool right triangles? read more ..

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Guest Sep 27, 2020

478

help!!!!!

How many multiples of $17$ are greater than $-50$ and less than $50$?

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Guest Sep 27, 2020

411

counting

On a 5 by 5 grid of unit squares, one unit square is colored blue, one unit square is colored red, and the rest of the unit squares are white. Grids are considered different if no rotation could turn one into the other. How many different grids are there? read more ..

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Guest Sep 27, 2020

345

Use Synthetic Division to find the Remainder.

Guest Sep 27, 2020

698

Work out the value of n

Work out the value of n
1/8×√2=2n
Give your answer as an improper fraction.

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Guest Sep 27, 2020

596

+35

please help me

https://waynecounty.instructure.com/courses/51813/quizzes/76406/take

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maximusaurelius117 Sep 27, 2020

569

please help!

Need to find the Measure of angle A!!

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Guest Sep 27, 2020

1448

A 120-liter solution that is 5% salt is mixed with an80-liter solution that is 15% salt. The combined solution is what percent salt?

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Guest Sep 27, 2020

502

+50

Helpp

Find the derivative of y with respect to the opprotpriate variable
y=(x2+1) sech(lnx)

Lolaaaaaa1999 Sep 27, 2020

352

halp please!

https://web2.0calc.com/questions/pls-quick-fast-help-explanation-edit#r1

Guest Sep 27, 2020

466

algebra problem

Bob travelled from City A to City B at an average speed of 30 kilometers/hour. For hisreturn trip he took a different route. The average speed of the return trip was 2/3 of the speed of the trip from City A to City B and the route he took from city A to read more ..

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Guest Sep 27, 2020

651

help!

When 482, 992, and 1094 are divided by a positive integer D, the remainders are all 74. What is D?

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Guest Sep 27, 2020

414

please help

A, O and B lie on a straight line segment where a = 30°, b = 63° and c = 75°.
State the value of the angles:
i) ∠AOB
ii) ∠ZOB
iii) ∠XOY <#> iv) ∠AOY <#> v) ∠YOZ <#> The read more ..

Guest Sep 27, 2020

474

geometry

Find the value of x.

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Guest Sep 27, 2020

686

i want x and y

44x+16y=84

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Guest Sep 27, 2020

All Questions ⁺⁰237665 Questions

vectors

Looks hard

word problem

geometry

Help Please

geometry problem

Answer

help

geometric ratios

I need help on this question plzzzzz

help!!!!!

counting

Use Synthetic Division to find the Remainder.

Work out the value of n

please help me

please help!

A 120-liter solution that is 5% salt is mixed with an80-liter solution that is 15% salt. The combined solution is what percent salt?

Helpp

halp please!

algebra problem

help!

please help

geometry

i want x and y

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