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155

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I need help with this

Plz help
A standard six-sided die is rolled 7 times. You are told that among the rolls, there was one 1, two 2's, and three 4's. How many possible sequences of rolls could there have been? (For example, 5, 1, 2, 2, read more ..

Guest Apr 21, 2023

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key features of parabolas

Kathy launched a ball modeled by the equation k(t)=-16t^2+150t+5. Matthew launched a ball modeled by the equation m(t)-16t^2+90t+8. Whose ball goes the highest? How high?

Guest Apr 21, 2023

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153

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Help somebody help

You are given the 4 x 4 grid below.
(a) Find the number of ways of placing 8 counters in the squares (at most one counter per square), so that each row contains exactly two counters.
(b) Find the number of ways read more ..

Guest Apr 21, 2023

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134

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Help pls help

Can anyone help with this?
Let PQR be an equilateral triangle, centered at O. A point X is chosen at random inside the triangle. Find the probability that X is closer to O than to any of the sides. (In read more ..

Guest Apr 21, 2023

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159

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Find the measure (in radians) of a central angle of an arc with arc length 10π units and radius 5 units.

Find the measure (in radians) of a central angle of an arc with arc length 10π units and radius 5 units.

Guest Apr 21, 2023

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131

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Need help quick

In triangle AB, let the angle bisectors be BY and CZ. Given AB = 16, AY = 16, and CY = 16, find BC and BZ.

Guest Apr 21, 2023

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159

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A group of juniors and seniors took a test. Exactly $\frac{3}{5}$ of the juniors and exactly $\frac{6}{7}$ of the seniors passed the test. I

A group of juniors and seniors took a test. Exactly of the juniors and exactly of the seniors passed the test. If the number of juniors who passed the test was of the number of seniors who passed the test, what fraction of the entire group passed the test? read more ..

Guest Apr 21, 2023

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163

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Help me plz

I need help with geometry.
A certain square and a certain equilateral triangle have the same perimeter. The square and triangle are inscribed in circles, as shown below. If A is the area of the square and B is the area of the triangle, read more ..

Guest Apr 21, 2023

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146

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Help meeeee

For the triangle below, let x be the area of the circumcircle, and let y be the area of the incircle. Compute x - y.

Guest Apr 21, 2023

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144

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I need help quick

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

Guest Apr 21, 2023

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145

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Help me plz

Let B, A, and D be three consecutive vertices of a regular -gon. A regular heptagon is constructed on AB with a vertex C next to A Find angle BCD in degrees.

Guest Apr 21, 2023

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141

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I need help now

In triangle ABC, AB = 15, BC = 20, and AC = 20. Find the length of the shortest altitude in this triangle.

Guest Apr 21, 2023

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135

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Help need help

I need help plz
In the diagram below, SR = PQ = 20 and RT:TS = 2:13. Find UV.

Guest Apr 21, 2023

Apr 20, 2023

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167

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Triangles

Plz help!
In triangle ABC, angle A = p + 2q degrees, angle B = 6p - 5q degrees, and angle C = 10p + 7q degrees. Find p and q in degrees.

Guest Apr 20, 2023

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166

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Can anyone help

I need help with this problem:
Let G be the centroid of triangle ABC. If triangle ABG is an equilateral triangle with a side length of 2, then find the area of triangle ABC.

Guest Apr 20, 2023

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162

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Help pleez!

I am stuck on this:
In square ABCD, P is on BC such that BP = and PC = , and Q is on CD such that BQ = and QC = . Find sin angle PAQ.

Guest Apr 20, 2023

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138

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Help I need help

I need help with angle bisectors
In triangle PQR, let X be the intersection of the angle bisector of angle P with side QR, and let Y be the foot of the perpendicular from X to line PR. If PQ = 9, QR = 9, and read more ..

Guest Apr 20, 2023

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156

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Help with angles plz

In the diagram below, four lines all pass through the same point. How many acute angles are in the diagram?

Guest Apr 20, 2023

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133

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help with this plz

I need help with 3d geo
In tetrahedron ABCO, angle AOB = angle AOC = angle BOC = 90^\circ. A cube is inscribed in the tetrahedron so that one of its vertices is at O, and the opposite vertex lies on face ABC. Let OA = read more ..

Guest Apr 20, 2023

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148

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Need help with this unit circle ASAP.

csc 150 corresponds to the point (-0.866, -0.5) on the unit circle. tan 5π/4 corresponds to the point (-0.707, -0.707) on the unit circle. cot 240 corresponds to the point (0.5, -0.866) on the unit circle. sin 315 corresponds to the point (-0.707, -0.707) read more ..

Guest Apr 20, 2023

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147

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PLEASE HELPLPLP

There are 10 people standing in a circle. Some of them always tell the truth. Some of them always lie. The rest of them sometimes tell the truth and sometimes lie. There is at least 1 of each type of person. When asked if they were standing next to at least read more ..

Guest Apr 20, 2023

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