All Questions

662

n.e.e.d.h.e.l.p.

Rectangle ABCD is folded along BD, and point C lands on C1. BC1 and AD intersect at point E. AB=5, AD=10. What is the length of DE?

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ooojustwhy Mar 18, 2018

679

PLEASE HELP!

You are aiming to spend $100 or less on meat for a barbeque. Your options are chicken or steak. Chicken costs $1.29/lb and steak costs $3.49/lb. How much of each meat can be purchased?

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Guest Mar 18, 2018

874

Question 14

I’ve tried so hard on this, can anyone do it?

The points A (6,1) and B(-2,5) are on the line with equation y=-1/2x+4
M is the midpoint of AB read more ..

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Guest Mar 18, 2018

2058

HELP!

Let $f(x)=7x+5$ and $g(x)=x-1$. If $h(x)=f(g(x))$, then what is the inverse of $h(x)$?

hectictar ●

Guest Mar 18, 2018

1035

+72

Simplify (1+3+5+...+199)/(2+4+6+...+200).

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amandapaolars Mar 18, 2018

552

Help

Let \[f(x) = \frac{3x - 7}{x + 1}.\] Find the inverse $f^{-1}(x)$.

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Guest Mar 18, 2018

537

Word Problem

The cost of C (in millions of dollars) for the federal government to seize p% of an illegal drug as it enters the country is given by
C = 528 x p/100 - p , 0 greater read more ..

Guest Mar 18, 2018

886

+124

Kurvenuntersuchungen, Q1 (Gymnasium)

Hey, Was ist die 1,2,3 Ableitung von: 1/4(4-x)*e^x ? Und wie bestimme ich rechnerisch Extrema, Wendepunkte von f und Achsenschnittpunkte von f und f'?

man muss aufjedenfall v und v' und u und u' irgendwo anwenden read more ..

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ellie Mar 18, 2018

891

+1243

Help!

Two different numbers are selected simultaneously and at random from the set {1,2,3,4,5,6,7}. What is the probability that the positive difference between the two numbers is 2 or greater? Express your answer as a common fraction.

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Lightning Mar 18, 2018

2625

+1243

Help!

A fair, twenty-faced die has 19 of its faces numbered from 1 through 19 and has one blank face. Another fair, twenty-faced die has of its faces numbered from 1 through 8 and10 through 20 and has one blank face. When the two dice read more ..

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Lightning Mar 18, 2018

1087

Help, Math 3 honors...

The pH of a liquid is a measure of how acidic or basic it is. The concentration of hydrogen ions in a liquid is labeled [H+]. Use the formula pH = - log [H+] to answer the following question about pH.

Find the pH level, read more ..

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Jsmith Mar 18, 2018

845

algebra

(-125)^1/3

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Guest Mar 18, 2018

1525

+1243

Help

In the geoboard shown, the points are evenly spaced vertically and horizontally. Segment is drawn using two points, as shown. Point C is to be chosen from the remaining 23 points. How many of these 23 points will result in triangle ABC being read more ..

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Lightning Mar 18, 2018

1760

+610

Please Help, Thank you, it may be easy

The numbers are written down and some of them are colored blue. A coloring is called factorific if there is at least one blue number, and for each blue number, all of its divisors are also blue.
If Grogg randomly colors some, all, read more ..

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gueesstt Mar 18, 2018

1389

We define a function $f(x)$ such that $f(11)=34$, and if there exists an integer $a$ such that $f(a)=b$, then $f(b)$ is defined and $f(b)=3

We define a function f(x) such that f(11)=34, and if there exists an integer a such that f(a)=b, then f(b) is defined and f(b)=3b+1 if b is odd f(b)=b/2 if b is even

What is the smallest possible number of integers read more ..

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Guest Mar 18, 2018

969

+1243

Help

I have 5 red plates and 4 blue plates. If I randomly select two plates to serve dinner on, what is the probability that they're both the same color?

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Lightning Mar 18, 2018

539

+1243

Help

The positive three-digit integer has a ones digit of . What is the probability that is divisible by ? Express your answer as a common fraction.

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Lightning Mar 18, 2018

Mar 17, 2018

4988

+1450

Trapezoid problem

The bases of trapezoid ABCD are line AB and line CD. We are given that AB < CD, CD = 8, AD = BC = 7, and BD = 9. Find the area of the trapezoid.
read more ..

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AnonymousConfusedGuy Mar 17, 2018

796

+174

Math

Bob has 45 coins in her piggy bank. She has one fewer nickel than she has dimes, and one fewer quarter than three times the number of nickels. If Bob has only nickels, dimes, and quarters, how many nickels does she have?

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wiskdls Mar 17, 2018

1672

+174

Math

The sum of five different positive integers is 320. The sum of the greatest three integers in this set is 283. The sum of the greatest and least integers is 119. If x is the greatest integer in the set, what is the positive difference between the greatest read more ..

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wiskdls Mar 17, 2018

902

+174

Math Help

In Mrs. Craig's statistics class there are twice as many 11th grade students as there are 9th and 10th grade students combined. There are twice as many 12thgrade students as 9thgrade students, and the number of 11thgrade students is ten times the number read more ..

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wiskdls Mar 17, 2018

1623

+816

plz halp!

At the MP Donut Hole Factory, Niraek, Theo, and Akshaj are coating spherical donut holes in powdered sugar. Niraek's donut holes have radius 6 mm, Theo's donut holes have radius 8 mm, and Akshaj's donut holes have radius 10 mm. All three workers coat the read more ..

hectictar ●●

mathtoo Mar 17, 2018

1857

+4609

help again, quick geometry....

A right pyramid has a square base with perimeter 24 inches. Its apex is 9 inches from each of the other vertices. What is the height of the pyramid from its peak to the center of its square base, in inches?

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tertre Mar 17, 2018

662

Algebra Help

Let f(x) = x^4-3x^2 + 2 and g(x) = 2x^4 - 6x^2 + 2x -1. What is the degree of f(x) • g(x)?

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Guest Mar 17, 2018

2095

+4609

Geometry Help, please, quick!

shown below is a right rectangular prism. If the volume of pyramid is 20, then what is the volume of ?

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tertre Mar 17, 2018

All Questions ⁺⁰230949 Questions

n.e.e.d.h.e.l.p.

PLEASE HELP!

Question 14

HELP!

Simplify (1+3+5+...+199)/(2+4+6+...+200).

Help

Word Problem

Kurvenuntersuchungen, Q1 (Gymnasium)

Help!

Help!

Help, Math 3 honors...

algebra

Help

Please Help, Thank you, it may be easy

We define a function $f(x)$ such that $f(11)=34$, and if there exists an integer $a$ such that $f(a)=b$, then $f(b)$ is defined and $f(b)=3

Help

Help

Trapezoid problem

Math

Math

Math Help

plz halp!

help again, quick geometry....

Algebra Help

Geometry Help, please, quick!

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