All Questions ⁺⁰227933 Questions

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259

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help coordinates

Find the area of the triangle bounded by the y-axis and the lines y - 3x = -2 and 3y + x = 10 .

Guest Jan 21, 2022

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150

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help coordinates

What is the area of the region bounded by the three lines with equations 2x + y = 8, 2x - 5y = 20 and x + y = 12?

Guest Jan 21, 2022

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194

1

Help

The equation of the line joining the complex numbers $-5 + 4i$ and $7 + 2i$ can be expressed in the form
for some complex numbers $a$ and $b$. Find the ordered pair $(a, b)$.

Guest Jan 21, 2022

+1

167

0

+66

please help asap

Andy needs a loan that he will not have to pay back for 3 years. The interest rate for the loan is 7.5% compounded quarterly. On the maturity date, wants Andy to make a single payment of no more than $12000. What is the most Andy read more ..

marky Jan 21, 2022

+1

170

0

+66

please help asap

Lana’s car needs major work done to it that will cost of $2240. She has a line of credit that she can use to pay for this. The line of credit has an interest rate of 9.8% compounded weekly. If Lana makes monthly payments of $80, how long read more ..

marky Jan 21, 2022

+1

158

0

+66

please help asap

Carson is planning to buy and install new tires and rims on his car. The cost is $1150, which he will use credit to pay. He wants to pay off the loan in 6 months and has two credit options
• The tire shop has financing at 16.8%, compounded read more ..

marky Jan 21, 2022

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234

1

Coordinates

A point (3*sqrt(5), d + 6) is 3d units away from the origin. What is the smallest possible value of d?

Guest Jan 21, 2022

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186

1

Geometry

Let AB be a diameter of a circle, and let C be a point on the circle such that AC = 8 and BC = . The angle bisector of ACB intersects the circle at point M. Find CM.

read more ..

Guest Jan 21, 2022

+1

267

2

help with geometry

In the diagram below, angle PQR = angle PRQ = angle STR = angle TSR, RQ = 8, and SQ = . Find PQ.

Guest Jan 21, 2022

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139

0

Algebra

Let a be a positive real number such that all the roots of x^3 + ax^2 + ax - 2a - 1 = 0 are real. Find the smallest possible value of a.

Guest Jan 21, 2022

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136

0

Counting

A committee is to be made up from a group of 10 candidates. The committee must consist of a chairperson, vice-chairperson and some (not necessarily nonzero) number of members-at-large. How many ways can the committee be chosen?

Guest Jan 21, 2022

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139

0

Number Theory

Given that x is a positive integer less than 6, how many values can k take on such that 3x = k (mod9) has no solutions in x?

Guest Jan 21, 2022

-2

366

0

precalc

In triangle ABC, $\angle BCA = \pi/6$, AB = , and AC = 10.

Find the sum of all distinct possible values of BC. If there are no possible values, enter 0.

Guest Jan 21, 2022

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255

1

precalc

Find the 3 smallest positive x-intercepts of the graph of y = cos (12x)
and list them in increasing order

Guest Jan 21, 2022

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142

0

trig question

The value tan(7.5) can be expressed in the form sqrt(a) - sqrt(b), where a and b are positive integers. Find a + b.

Guest Jan 21, 2022

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176

1

trig

In right triangle BCD with angle D = 90 , we have BC = 8 and BD = . Find sin B.

Guest Jan 21, 2022

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162

0

Math problem

How many numbers can be expressed as the sum of two or more distinct elements of the set ?

Guest Jan 21, 2022

+1

251

1

Geometry

Circles A, B, and C are externally tangent to each other. If AB = 14, BC = 18, and AC =, then find the radii of each of the circles.

Guest Jan 21, 2022

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148

0

Precalc

In right triangle ABC, we have AB = 10, BC = 24, and ABC = 90 degrees. If M is AC on such that is an angle bisector of ABC, then what is cos ABM?

Guest Jan 21, 2022

0

269

2

Proportion (reposted)

Keith had 60 tokens when he went to the arcade, when he left the arcade he had 25. What percent of his tokens did he use? (Round to the nearest percent)

Guest Jan 21, 2022

0

143

0

Number Theory

If a and b are positive integers such that gcd(a,b)=210, lcm[a,b]=210^2, and a < b, how many possible values are there for a?

Guest Jan 21, 2022

0

182

1

factorize

Factorize px-qx +2p-2q.

Guest Jan 21, 2022

0

243

1

Counting problem

How many cubic (i.e., third-degree) polynomials f(x) are there such that f(x) has nonnegative integer coefficients and f(1) = ?

Guest Jan 21, 2022

0

264

1

Binomial theorem

What is the coefficient of x^3 in the expansion of (x + 2*sqrt(3))^5?

Guest Jan 21, 2022

0

263

1

need help

r and s are the roots of 3x^2 + 4x - 12 = 0. Find r^2+s^2+2rs

Guest Jan 21, 2022

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