All Questions ⁺⁰237665 Questions

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823

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Isosceles trapezoid+inscribed circle+tangents proof problem

Quadrilateral $ABCD$ is an isosceles trapezoid, with bases $\overline{AB}$ and $\overline{CD}.$ A circle is inscribed in the trapezoid, as shown below. (In other words, the circle is tangent to all the sides of the trapezoid.) The length of base $\overline{AB}$ read more ..

Guest Sep 8, 2021

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322

2

geometry help

As shown in the figure, two angle bisectors of triangle ABC, line segment BE and line segment CF, intersect at P. If Angle EPF = 111 degrees, what is Angle A in degrees?

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Guest Sep 8, 2021

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323

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at a southern university, half of the 48 mathematics majors were receiving federal financial aid.

at a southern university, half of the 48 mathematics majors were receiving federal financial aid.

5 had Pell Grants
14 had TOPS scholarships read more ..

Guest Sep 8, 2021

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435

1

System

Solve this system of equations for x and y in terms of a and b. \
y - 3x = a
x = 2y + 3x + b

Guest Sep 8, 2021

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267

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Counting

A science teacher is arranging her books on a shelf. She has 4 astronomy books, 3 biology books, and 2 chemistry books. How many ways can she arrange these books on the shelf if the books at the end must be chemistry books?

Guest Sep 8, 2021

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263

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Counting

How many ways can Amir, Bin, Charles, and Daria stand in a line if Amir and Bin want to stand next to each other?

Guest Sep 8, 2021

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256

1

Probability

I have 2 standard, 6-sided dice; one is brown, and the other is black. I roll them both. What is the probability that the sum of the numbers that I roll is less than 3?

Guest Sep 8, 2021

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314

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what is exact form help

pls tell me what exact form is in the simplest of terms please (that or explain wat the big words mean lol)

Guest Sep 8, 2021

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274

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Algebra

Adult tickets for the school musical sold for 3.50 and student tickets sold for 2.50. Three hundred twenty-one tickets were sold all together for 937.50. How many of each kind of ticket were sold?

Guest Sep 8, 2021

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343

2

Right Triangle

Given right triangle ABC with altitude BD drawn to hypotenuse AC. If AC = 11and DC = 4, what is the length of BC in simplest radical form?

Guest Sep 8, 2021

Sep 7, 2021

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586

2

pls helppppp

For what value of $n$ is $3\frac34-n=n+\frac12$? Express your answer as a common fraction.

Guest Sep 7, 2021

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268

1

word problem

Ayana has 2.35 in nickels and dimes. If she has 33 coins total, find the number of nickels and dimes.

Guest Sep 7, 2021

0

467

1

+108

Need some help here. Thank you.

A box contained some $5 notes. David took of the notes and another 2 more
notes to buy a wallet. Then he took 50% of the remaining notes and 2 more notes to
buy a watch. Finally he took of what was left read more ..

KourageKowardlyDog Sep 7, 2021

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370

1

+38

help ASAP

ou read online that a 15 ft by 20 ft brick patio would cost about $2,275 to have professionally installed. Estimate the cost of having a 17 by 22 ft brick patio installed.
$
Round your answer to the nearest dollar.

Gue22858 Sep 7, 2021

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395

1

+216

Math help please

MATH HELP PLEASE ASAP

Jmaster10 Sep 7, 2021

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460

1

+108

PLEASE help me

The ratio of the number of brownies sold to the number of cookies sold is 3: 5.
Each piece of brownie was sold for $1 more than each piece of cookie. Eric
collected $154 for all brownies and cookies sold. He collected $44 more from the read more ..

KourageKowardlyDog Sep 7, 2021

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257

0

help needed

If you flip a fair coin 7 times, what is the probability that you will get exactly 2 tails?

Guest Sep 7, 2021

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556

2

PLS HELP

Write the expression $\frac{4+3c}{7}+2$ as a single fraction.

Guest Sep 7, 2021

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291

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Geometry

Two circles share a common chord PQ. The chord cuts off a 90 degree arc of circle A and a 90 degree arc of circle B. If the area of quadrilateral ABPQ is 4, find the combined area of the gray regions.

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Guest Sep 7, 2021

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418

1

Radicals

Simplify the following expression to a simplified fraction:
\[\frac{\frac{5}{\sqrt{80}}}{\sqrt{5}}.\]

Guest Sep 7, 2021

0

522

1

+195

Help! I'm confused

Trapezoid $ABCD$ is inscribed in the semicircle with diameter $\overline{AB}$, as shown below. If $CD = 7$, $AD = 3$, and $BC = 3$, then find the radius of the semicircle.
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QuestionMachine Sep 7, 2021

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269

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help counting

How many non congruent triangles with positive integer side lengths have perimeter less than 18?

Guest Sep 7, 2021

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377

1

A line has a slope of -3/7, and its y-intercept is (0,18). What is its x-intercept?

A line has a slope of -3/7, and its y-intercept is (0,18). What is its x-intercept?

Guest Sep 7, 2021

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