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789

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The two lines y - ax = 2 and x + 23y = 138 are perpendicular. What is the value of a?

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Guest Jan 4, 2020

Jan 3, 2020

1874

+18

The directrix of a parabola is x = 0. Its focus is (2,6) . What is the standard form of the parabola? Enter your answer by filling in the

The directrix of a parabola is x = 0. Its focus is (2,6) .
What is the standard form of the parabola?

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Beanpole Jan 3, 2020

713

help

I drew rectangular grids with one more row than their column. The number of dots in the first four grids are 2, 6, 12, and 20, as shown in the diagram below:

read more ..

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Guest Jan 3, 2020

573

help

How many 3 - digit positive integers can be formed by using 1, 2, 3, 4, 5 without the repetition of digits?

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Guest Jan 3, 2020

3492

Confused

In how many ways can 4 teachers and 4 students be seated at a circular table if each student sits directly between two teachers? (Two seatings are considered the same if one can be rotated to form the other.)

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Guest Jan 3, 2020

540

Help please

A standard six-sided die is rolled 5 times. You are told that among the rolls, there was one 4 one 5 and three 6's. How many possible sequences of rolls could there have been? (For example, 6,5,6,6,4 is one possible sequence.)

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Guest Jan 3, 2020

465

help

Find the radius of the circle in the diagram.

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Guest Jan 3, 2020

578

Help

Ok so i have 280 recipes and i want to do them over the year so 365 days how many recipes do i do a week ?

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Guest Jan 3, 2020

-4

1773

Help meeee due tommorow. The help was false

In the right triangle, ABC, the length of side AC is 8 the length of side BC is6 and C is 90 degrees The circumcircle of triangle ABC is drawn. The angle bisector of ACB meets the circumcircle at point M read more ..

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Guest Jan 3, 2020

638

help

Find the shortest altitude of a triangle whose sides are 17, 25, and 28.

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Guest Jan 3, 2020

708

math

The lateral area of a cone with radius 4cm is 60 cm square,
a) Determine the slant height of the cone, to the nearest centimetre.
b) Determine the height of the cone, to the nearest centimetre

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Guest Jan 3, 2020

933

+707

converting a quadratic written in standard form, to vertex.

hello everybody,
hope you've had an awesome holiday and happy new year!
i do not understand how this problem turns into

here is the original thing:

read more ..

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Nirvana Jan 3, 2020

613

help

The lengths of the sides of a triangle are 5,6 and 10 cm respectively. Find the square of the length of the median of the greatest side.

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Guest Jan 3, 2020

2280

Help please due tommorow. INcredibly hard

In right triangle, ABC, the length of side AC is 8 the length of side BC is6 and C is 90 degrees The circumcircle of triangle ABC is drawn. The angle bisector of ACB meets the circumcircle at point M Find read more ..

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Guest Jan 3, 2020

445

help

Equilateral triangle ABC is inscribed in a circle. Point P lies on this cicle, and PB = 8. If AB = 7 and PA < PC, find the ordered pair (PA,PC).

Guest Jan 3, 2020

651

Help please

Suppose that is a multiple of 3 and b is a multiple of 6 Which of the following statements must be true?
A. b is a multiple of 3
B. a-b is a multiple of 3
C. a-b is a multiple of 6
D. read more ..

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Guest Jan 3, 2020

630

Acceleration and deceleration of a car

a. A car drives up at a speed of 20 m/s and brakes. Show that the deceleration of the car is equal to 2,0 m/s^2 and that the braking distance is 100 meters.

b. A car drives up at a speed of 254 km/h and brakes maximal. The maximal read more ..

off-topic

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Guest Jan 3, 2020

505

Suppose that for some we have , . What is ?

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Guest Jan 3, 2020

476

help

Find all real numbers x such that

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Guest Jan 3, 2020

957

+394

3D Geometry

A perfect sphere is inscribed inside a right circular cone (60 degrees vertex). Find the ratio of the volume of the sphere to the cone.

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hellospeedmind Jan 3, 2020

475

help

At 10 minutes past noon, the hands of a clock make an angle of x degrees. After how many minutes will the hands again make an angle of x degrees?

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Guest Jan 3, 2020

541

Dummy books

Is finishing dummies books good preparation for calculus (E.g. algebra II, ,pre calc etc.. + calc 1 textbook)

off-topic

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Guest Jan 3, 2020

725

help

The function f(x) is linear. If f(2016) - f(2004) = 5, then find f(2012) - f(1184).

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Guest Jan 3, 2020

1686

+100

halp

Four distinct integers a, b, c and d have the property that when added in pairs, the sums 16, 19, 20, 21, 22, and 25 are obtained. What are the four integers in increasing order? (place a comma and then a space between each integer)

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Atroshus Jan 3, 2020

All Questions ⁺⁰237643 Questions

help

The directrix of a parabola is x = 0. Its focus is (2,6) . What is the standard form of the parabola? Enter your answer by filling in the

help

help

Confused

Help please

help

Help

Help meeee due tommorow. The help was false

help

math

converting a quadratic written in standard form, to vertex.

help

Help please due tommorow. INcredibly hard

help

Help please

Acceleration and deceleration of a car

Suppose that for some we have , . What is ?

help

3D Geometry

help

Dummy books

help

halp

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