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1417

Twelve new students are standing in a line. How many different ways can the first seven students in line order themselves?

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Guest Jul 7, 2020

1087

+256

~ Please Help!~ Math Question...

In 36 years Adam's age will be 2.5 times his current age. How many years old is he now?

read more ..

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MathWizPro Jul 7, 2020

505

help

If , what is ?

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Guest Jul 7, 2020

618

number theory

Find the last digit of

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Guest Jul 7, 2020

510

Geometry question

a cylinder with a hole in the shape of a rectangular prism going through the center of it. The radius is 10 yards. A three-dimensional cylinder is shown with a hole in the shape of a rectangular prism going through the center of it. The height of the cylinder read more ..

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Guest Jul 7, 2020

562

help please

Count the total number of 3×2 rectangles in the 5×5 grid above.

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Guest Jul 7, 2020

687

+335

help

The expression $x^2 + 13x + 30$ can be written as $(x + a)(x + b),$ and the expression $x^2 + 5x - 50$ written as $(x + b)(x - c)$, where $a$, $b$, and $c$ are integers. What is the value of $a + b + c$?

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Rayjplayz Jul 7, 2020

-1

622

+335

halp!

A large rectangle has side lengths of $(x+7)$ and $(x+5)$. In the large rectangle, there is a rectangular hole with side lengths of $(2x-3)$ and $(x-2)$. What is the area of the large rectangle (not including the area of the hole)? Express your answer as read more ..

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Rayjplayz Jul 7, 2020

551

help

A father is 4 times his son's age. And in 30 years son's age will be half of his father's age. How old is the father?

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Guest Jul 7, 2020

968

+21

Please help thank you

A train traveling at 100 km an hour takes 3 seconds to enter a tunnel and an additional thirty seconds to pass completely through it. Find the length, in kilometers, of the train. Express your answer as a common fraction. Thank you so much!!!!! read more ..

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nimimimi Jul 7, 2020

518

help

A mother asked her daughter to type a manuscript. The daughter claimed: " I will type an average of 20 pages a day."
She typed the first half of the manuscript rather lazily, at 10 pages a day. To make up for it, she typed the second half at 30 read more ..

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Guest Jul 7, 2020

411

Help

If a 60-foot piece of wood is divided in the ratio 3:4:5, the result is

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Guest Jul 7, 2020

1129

question

Three faces of a right rectangular prism have areas of 48, 49 and 50 square units. What is the volume of the prism, in cubic units? Express your answer to the nearest whole number.
thx

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Guest Jul 7, 2020

408

help

Imagine a rectangle. Keeping the base firm, if you slide the rectangle from the top to make a parallelogram so that its area is exactly half of that of the rectangle (with same dimensions), what would be the smaller angle of that parallelogram in degrees? read more ..

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Guest Jul 7, 2020

564

help

Find all values of t such that

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Guest Jul 7, 2020

532

help

Hannah is 7 years older than Tim was 2 years ago. If Tim is half of Hannah's age at present, then how old is Hannah now?

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Guest Jul 7, 2020

836

Help!

The width, length, and height of a rectangular prism are each increased by 10%. What is the percent increase in the volume of the prism? Express your answer to the nearest whole number.
Thank you in advance

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Guest Jul 7, 2020

1013

help

Given that AB=12, CD=1, angle BAC=90∘, and the semicircle is tangent to BC,find the radius of the semicircle.

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Guest Jul 7, 2020

593

+367

PLEASE HELP ASAP

Find the set of all z such that neither 2+z nor 2-z is in the interval (-1,1]. Express your answer as an interval or as a union of intervals.

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imdumb Jul 7, 2020

544

help

Find r if 1/r + 1 + r + r^2 + r^3 + ... = 4/r.

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Guest Jul 7, 2020

474

Help Please!

Let x and y be integers. Show that 9x + 5y is divisible by 19 if and only if x + 9y is divisible by 19.

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Guest Jul 7, 2020

469

plz help

if
where what is the value of N?

Guest Jul 7, 2020

410

algebra

If a/b + b/a = 1, then find the value of a^3 + b^3.

Guest Jul 7, 2020

664

+93

holp plz

My street hockey team plays three games each week. My team lost all 12 games in the first four weeks. Then, my team won two games and lost one game in the fifth week, bringing our record to 2 wins and 13 losses. Each week after that, my team won two games read more ..

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stuckonmyproblem Jul 7, 2020

366

please help

How many rectangles are in this figure?

Guest Jul 7, 2020

All Questions ⁺⁰237665 Questions

Twelve new students are standing in a line. How many different ways can the first seven students in line order themselves?

~ Please Help!~ Math Question...

help

number theory

Geometry question

help please

help

halp!

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Please help thank you

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question

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Help Please!

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algebra

holp plz

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