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Post New Question
All Questions
+0
229750 Questions
0
1029
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+4116
Really need help..
Really need help..
A fictitious element X is composed of 10.0 percent of the isotope 55^X , 20.0 percent of the isotope 56^X , and 70.0 percent of the isotope 57^X . Estimate the atomic mass of element X.
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NotSoSmart
Nov 14, 2017
0
2011
2
These are problems I couldn't figure out. Help plz!
Triangle ABC is an isosceles triangle with side lengths of 25, 25 and 48 centimeters. What is the area of triangle ABC, in square centimeters?
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Guest
Nov 14, 2017
-1
693
1
combine like terms
-4*+7=-3*-7
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Guest
Nov 14, 2017
0
2430
5
Help!
While walking on a plane surface, a traveler first headed 19 miles north, then 16 miles west, then 3 miles south and finally 4 miles east. How many miles from the starting point was the traveler after these four legs of the journey?
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Guest
Nov 14, 2017
+3
1104
0
+633
I've lost count now.
Original link: http://web2.0calc.com/questions/very-hard-math-question-for-my-profile-picture
Hey guys, I've posted this question so many times and still would like an answer. I am just so confused about why it is shaped like that, and what
read more ..
helperid1839321
Nov 14, 2017
0
542
1
[Veteran - member] Need help with a der. rule
read more ..
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Guest
Nov 14, 2017
0
1961
1
Urgent. I did the problem but it said it was wrong. Could anyone help me solve this correctly?
Two sides of a right triangle have the lengths 4 and 5. What is the product of the possible lengths of the third side? Express the product as a decimal rounded to the nearest tenth.
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Guest
Nov 14, 2017
+4
678
0
+107
hope you have a good day
have a great day even if there is nothing but darkness around you let your light shine and you will see others start to follow
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off-topic
foxy02
Nov 14, 2017
0
5090
1
+912
Kim-Ly is writing a coordinate proof to show that the midpoints of a quadrilateral are the vertices of a parallelogram.
Kim-Ly is writing a coordinate proof to show that the midpoints of a quadrilateral are the vertices of a parallelogram. She starts by assigning coordinates to the vertices of quadrilateral RSTVquadrilateral RSTV and labeling the midpoints
read more ..
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AngelRay
Nov 14, 2017
-1
3529
1
+912
Diana is constructing a regular hexagon inscribed in a circle.
Diana is constructing a regular hexagon inscribed in a circle. She begins by drawing a line and labeling a point on the line as point A. She uses her compass to construct a circle with point A as the center, labeling the points where the
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AngelRay
Nov 14, 2017
-1
3131
1
+912
Triangle ABC is transformed with the center of dilation at the origin.
Triangle ABC is transformed with the center of dilation at the origin.
Pre-image: △ABC with vertices A(2, 5), B(6, 10), C(9, −1)
Image: △A′B′C′ with vertices A′(0.5, 1.25), B′(1.5, 2.5), C′(2.25, −0.25)
read more ..
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AngelRay
Nov 14, 2017
-1
2736
1
+912
fill in the blank to correctly complete the statement.
fill in the blank to correctly complete the statement.
A reflection is a transformation that maps point Q in a figure over a line, AB←→ , such that for point C at the intersection of AB←→ and QQ′¯¯¯¯¯ ,
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AngelRay
Nov 14, 2017
0
5871
1
+912
Drag and drop a statement or reason to each box to complete the proof.
Drag and drop a statement or reason to each box to complete the proof.
Given: parallelogram MNPQ
Prove: ∠N≅∠Q
read more ..
TheXSquaredFactor
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AngelRay
Nov 14, 2017
0
1466
0
+912
Drag and drop a statement or reason to each box to complete the proof.
Drag and drop a statement or reason to each box to complete the proof.
Given: parallelogram EFGH
Prove: EG¯¯¯¯¯ bisects HF¯¯¯¯¯ and HF¯¯¯¯¯ bisects EG¯¯¯¯¯ .
read more ..
AngelRay
Nov 14, 2017
-1
7624
3
+912
Drag and drop a statement or reason to each box to complete the proof.
Drag and drop a statement or reason to each box to complete the proof.
Given: PQ¯¯¯¯¯≅PR¯¯¯¯¯
Prove: ∠Q≅∠R
read more ..
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AngelRay
Nov 14, 2017
-1
3357
1
+912
Which statement explains why ABC is congruent to A′B′C′?
Which statement explains why △ABC is congruent to △A′B′C′?
A. You can map △ABC onto △A′B′C′ by reflecting it across the y-axis and translating it 6 units down, which is a sequence of rigid motions.
read more ..
Omi67
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AngelRay
Nov 14, 2017
-1
3387
1
+912
Camille dilates a digital photograph by a factor of 1.25 to create a new digital photograph similar to her original photograph.
Camille dilates a digital photograph by a factor of 1.25 to create a new digital photograph similar to her original photograph.
Fill in the blank to correctly complete the statement.
read more ..
Omi67
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AngelRay
Nov 14, 2017
0
1036
3
+80
x^4-10x^2+9
x^4-10x^2+9
is there two relative minimums or only one
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gadzooks1753
Nov 14, 2017
+3
3030
1
+617
In right triangle $ABC$, we have $\angle BAC = 90^\circ$ and $D$ is on $\overline{AC}$ such that $\overline{BD}$ bisects $\angle ABC$. If $A
In right triangle $ABC$, we have $\angle BAC = 90^\circ$ and $D$ is on $\overline{AC}$ such that $\overline{BD}$ bisects $\angle ABC$. If $AB = 12$ and $BC = 15$, then what is $\cos \angle BDC$?
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michaelcai
Nov 14, 2017
+3
4183
1
+617
In triangle $PQR$, we have $\angle P = 90^\circ$, $QR = 20$, and $\tan R = 4\sin R$. What is $PR$?
In triangle $PQR$, we have $\angle P = 90^\circ$, $QR = 20$, and $\tan R = 4\sin R$. What is $PR$?
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michaelcai
Nov 14, 2017
0
648
1
Help?
Had to fill 4/5 container with mash potatoes. I ended up using 2 4/6 pounds of mashed potatoes. How many pounds would I use if I had to fill up the entire container
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Guest
Nov 14, 2017
0
865
2
+645
What is the smallest distance between the origin and a point on the graph of y = 1/sqrt2 (x^2 - 3)?
What is the smallest distance between the origin and a point on the graph of y = 1/sqrt2 (x^2 - 3)?
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waffles
Nov 14, 2017
0
2203
4
+645
Find the sum of the x values which solve the system of equations
Find the sum of the x values which solve the system of equations
saseflower
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waffles
Nov 14, 2017
0
1
3329
2
+645
(4x^2 + 6x + 4)(4y^2 - 12y + 25) = 28
Determine the unique pair of real numbers (x,y) satisfying (4x^2 + 6x + 4)(4y^2 - 12y + 25) = 28
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waffles
Nov 14, 2017
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