All Questions ⁺⁰238360 Questions

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745

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curious about a proof presented in class

Hello! In class, my geometry teacher was proving some theorems so that we could use them in class. However, we couldn't cover this last one before class ended. I was hoping someone could help me with this.

Prove that parallel lines read more ..

Guest Nov 9, 2019

-1

1090

1

+18

I need help, it would be great

The measures of two angles of an isosceles triangle are $3x + 4^{\circ}$ and $x + 16^{\circ}$. Find all possible values of $x$.

FBIOPENUP Nov 9, 2019

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1390

2

Geometry HW Help

Hi, I've finished almost all of my Geometry homework besides the following couple:

1. In the diagram below, I is the incenter of ABC. We know that AB=14, BC=11, and CA=15. What is CE?
read more ..

Guest Nov 9, 2019

+2

945

12

+1713

#preppingformymathcountsentryexam

Okay, I went online and found a bunch of problems, but the ones idk/unshure , I'm posting here.

In a survey of 100 readers, all of whom liked fiction and/or non-fiction, three times as many people reported liking fiction as those read more ..

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tommarvoloriddle Nov 9, 2019

+1

925

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+312

PROBABILITY

Mary takes two marbles, without replacement, from a bag that contains 10 red and 5 white marbles. What is the probability that both marbles are the same color? Express your answer as a common fraction.

mathleteig Nov 9, 2019

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1247

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+41

deleted

htzhang919 Nov 9, 2019

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1164

6

+1713

Algebra Help? A bit confused...

During his morning commute to work in rush hour traffic, Justin's average speed was 30 mi/h. During his afternoon commute back home along the same route, his average speed was 60 mi/h. What was his average speed for the entire round trip?
read more ..

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tommarvoloriddle Nov 9, 2019

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814

2

Does anyone know how to do these problems

What is the maximum value of 4(x+7)(2-x), over all real numbers x?

Guest Nov 9, 2019

+1

888

6

+2864

Linear Riddle

The following message has been changed in order to prevent any cheaters (or because google has good algorithms) on our school club test.
read more ..

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CalculatorUser Nov 9, 2019

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944

3

+41

deleted

htzhang919 Nov 9, 2019

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695

2

PLease Help with a few problems!

Deleted.
I am not at all sorry.
We are not here to do your homework for you.

Guest Nov 9, 2019

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2743

2

help me

What is the measure of the smaller angle between the hands of a 12-hour clock at 12:25 pm, in degrees? Express your answer as a decimal to the nearest tenth.

Guest Nov 9, 2019

0

512

1

help

Are there infinitely many terms in Fibonacci sequence divisible by 13?

Guest Nov 9, 2019

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804

4

help

A trapezoid has parallel sides of lengths 10 and 15; its two other sides have lengths 3 and 4. Find the area.

Guest Nov 9, 2019

+1

945

4

+60

help

write the equation of center 3,4 tangent to 2x+y+5=6

shgg111 Nov 9, 2019

+1

796

8

+60

help

write the equation of center on y=x and tangent to both axis of radius = 4

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shgg111 Nov 9, 2019

-2

956

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+379

Help please!

sinclairdragon428 Nov 9, 2019

-2

963

2

+379

Help please!

sinclairdragon428 Nov 9, 2019

-1

932

3

+379

Help please!

sinclairdragon428 Nov 9, 2019

-1

915

2

+379

Help please!

sinclairdragon428 Nov 9, 2019

0

893

2

help

If three identical cylinders weigh as much as five identical spheres, and three of these spheres weigh as much as twelve identical cubes, then how many cylinders weigh as much as sixty cubes?

Guest Nov 9, 2019

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665

4

help

A box contains R red balls, B blue balls, and no other balls. One ball is removed and set aside, and then a second ball is removed. On each draw, each ball in the box is equally likely to be removed. The probability that both of these balls are red is 2/7 read more ..

Guest Nov 9, 2019

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876

1

help

Point A has coordinates (x, 6). When Point A is reflected over the y-axis it lands on Point B. What is the sum of the four coordinate values of points A and B?

Guest Nov 9, 2019

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