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620

+56

Geometry

AB is a radius. Line CD is tangent to circle A at point B. AB = read more ..

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lel12 Apr 13, 2021

519

Please help

The sum of three times the smaller number and bigger number is 51. The bigger number is two more than four times the smaller. Find the numbers.

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Guest Apr 13, 2021

534

Please help

Solve the system of equation by substitution 6x-5y=12 and y=-2x+20. (write only the solution (x,y)

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Guest Apr 13, 2021

533

Help with my weird and challenging question

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Guest Apr 13, 2021

482

question

Employees in 2012 paid 4.2% of their gross wages towards social security (FICA tax), while employers paid another 6.2%. How much will someone earning $38,000 a year pay towards social security out of their gross wages

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Guest Apr 13, 2021

491

Interest Rates

Sue can either borrow 10,000 dollars for 5 years with a simple interest of 8% annually or an interest which compounds annually for 6%. How much more money, rounded to the nearest dollar, would she have to pay back for the more expensive interest? read more ..

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Guest Apr 13, 2021

-1

877

+218

Answer plz

Andrea poured 6 litres of 10% cream into 3 litres of 15% cream. What is the percentage of cream in the final mixture?

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MathyGoo13 Apr 13, 2021

473

mathematics

John has 9 times as many toys as Jacob. If John gives 12 toys to Jacob, the two children will have exactly the same amount. How many toys do they have altogether?

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Guest Apr 13, 2021

545

+273

Help plz! :D

If g ( 2x - 5 ) = 3x + 9 for all real x, then what is g ( 1 )?

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TheEarlyMathster Apr 13, 2021

559

Ratios

Purple paint is made by mixing red and blue paint by 5:4. How much more red paint than blue paint is in the 450 ml mixture?

A) 50
B) 100 read more ..

ElectricPavlov ●

Guest Apr 13, 2021

508

+502

graphing quadratics

The graph of a certain quadratic $y = ax^2 + bx + c$ is a parabola with vertex $(-4,0)$ which passes through the point $(1,-75)$. What is the value of $a$?

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ellapow Apr 13, 2021

442

Please answer the question

Find $y$ if the point $(-6,y)$ is on the line that passes through $(-1,7)$ and $(3,-2)$.

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Guest Apr 13, 2021

516

+502

graphing inequalities

The height (in meters) of a shot cannonball follows a trajectory given by $h(t) = -4.9t^2 + 14t - 0.4$ at time $t$ (in seconds). As an improper fraction, for how long is the cannonball above a height of $6$ meters? read more ..

ElectricPavlov ●

ellapow Apr 13, 2021

497

Please help

Find $y$ if the point $(-6,y)$ is on the line that passes through $(-1,7)$ and $(3,-2)$.

WillBillDillPickle ●●●

Guest Apr 13, 2021

521

Please Answer the question

1. Line L1 is horizontal and passes through (-5,8). Line L2 is vertical and passes through (4,-1). Find the point of intersection of L1 and L2.

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Guest Apr 13, 2021

576

+223

Please Help!

Thanks!

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CPhilFanboy Apr 13, 2021

500

+223

Please Help!

Thanks!

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CPhilFanboy Apr 13, 2021

495

+223

Please Help!

Thanks!

ElectricPavlov ●

CPhilFanboy Apr 13, 2021

559

+223

Please Help! Individual Questions

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ElectricPavlov ●●

CPhilFanboy Apr 13, 2021

Apr 12, 2021

487

+502

graphing circles

The circle centered at $(2,-1)$ and with radius $4$ intersects the circle centered at $(2,5)$ and with radius $\sqrt{10}$ at two points $A$ and $B$. Find $(AB)^2$.

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ellapow Apr 12, 2021

481

+502

graphing quadratics

Two parabolas are the graphs of the equations $y=2x^2-7x+1$ and $y=8x^2+5x+1$. Give all points where they intersect. List the points in order of increasing x-coordinate, separated by semicolons.

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ellapow Apr 12, 2021

336

Number Theory

If the least common multiple of two 6-digit integers has 8 digits, then their greatest common divisor has at most how many digits?

Guest Apr 12, 2021

466

+502

graphing inequalities

Find all $x$ that satisfy the inequality $(2x+10)(x+3)<(3x+9)(x+8)$. Express your answer in interval notation.

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ellapow Apr 12, 2021

762

+502

graphing circles

In terms of $\pi$, what is the area of the circle defined by the equation $2x^2+2y^2+10x-6y-18=0$?

ElectricPavlov ●

ellapow Apr 12, 2021

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