All Questions ⁺⁰230455 Questions

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HELP ASAP!!!

The units digit of a perfect square is 6. What are the possible values of the tens digit?

Rollingblade Apr 29, 2018

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738

0

If X is a normally distributed random variable with a mean of 10 and a variance of 4, P(8 < X < 13) approximately equals

If X is a normally distributed random variable with a mean of 10 and a variance of 4, P(8 < X < 13) approximately equals
a) 0.7745
b) 0.4938
c) 0.1915 read more ..

Guest Apr 29, 2018

+1

851

2

-40

help please!

solve:
5x - y =5
2y - x^2 = 11
read more ..

jakeharris02 Apr 29, 2018

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835

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+30

comparing functions

One linear function, t(x), can be modeled by the values in the table below. A second linear function can be modeled by the equation 3x − y − 3 = 0. When comparing the x-intercepts of these lines, which function has the largest x-intercept and what is this read more ..

sandman12345 Apr 29, 2018

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1045

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+30

proving theorems algebraically

The coordinates of the vertices of triangles are listed in the options below. Which is a right triangle?
D(−2, −3), E(−5, −7), F(6, −7)
A(−3, 2), B(−4, −9), C(8, 1)
P(−6, 2), Q(1, 0), R(−3, −2) read more ..

sandman12345 Apr 29, 2018

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1076

1

+30

proofs on the coordinate plane

A circle has center O(2, 3) and radius 10. Which of the following points is on the circle?
Hint:
V(−3, 2)
X(5, −2)
Y(2, 0) read more ..

sandman12345 Apr 29, 2018

+1

715

1

+30

perpendicular lines

What is the equation of the line, in slope-intercept form, that contains the points (−1, 2) and (2, −1)?
y = −3x + 1
y = −x + 1
y = x + 1 read more ..

sandman12345 Apr 29, 2018

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604

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+30

PROOFS ON THE COORDINATE PLANE

What is the value of y so that the line segment with endpoints A(−3, y) and B(6, −4) is parallel to the line segment with endpoints C(7, 6) and D(−2, 8)?

y=-7
y=1 read more ..

sandman12345 Apr 29, 2018

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1040

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+284

4.11: Apply the Laws of Sines and Cosines

Picture...https://static.k12.com/nextgen_media/assets/8107320-NG_GMT_DP024_232_008.jpg
3. What is the measure of ∠Y ?
Round your answer to the nearest degree.
24° read more ..

sii1lver Apr 29, 2018

+1

992

1

+235

How many positive integers $n$ satisfy $127 \equiv 7 \pmod{n}$? $n=1$ is allowed.

How many positive integers $n$ satisfy $127 \equiv 7 \pmod{n}$? $n=1$ is allowed.

Rollingblade Apr 29, 2018

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1497

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+284

4.10: Law of Cosines Quiz Three Questions

Picture...https://static.k12.com/nextgen_media/assets/8097056-NG_GMT_Q_03_U11_Quiz_05.png
2. What is the length of AB¯¯¯¯¯?
Enter your answer as a decimal in the box. Round only your final answer to the nearest tenth.
cm read more ..

sii1lver Apr 29, 2018

Apr 28, 2018

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2087

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+1242

HELP!

A cook has 10 red peppers and 5 green peppers. If the cook selects 6 peppers at random, what is the probability that he selects at least 4 green peppers? Express your answer as a common fraction.

Lightning Apr 28, 2018

+1

1075

2

+752

Help

The least common multiple of 1!+2!, 2!+3!, 3!+4!, 4!+5!, 5!+6!, 6!+7!, 7!+8!, and 8!+9! can be expressed in the form , where a and b are integers and b is as large as possible. What is a+b?

MIRB16 Apr 28, 2018

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913

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+174

maths

In how many ways can you color one cell blue and one cell red in the grid below so that the colored cells are not neighbors? Two cells are neighbors if they touch at all, even diagonally.

5x5 grid - grid

wiskdls Apr 28, 2018

+2

1309

2

+470

According to all known laws of aviation,

there should be an option to delete posts

off-topic

Neptune Apr 28, 2018

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623

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+9

Exact ODE step by step to solve

t(x')(t)+x(t)=t^2
I have the following problem and i know the answer is x(t)=(t^2/3)+(C/t)
I don't know the steps.
An explanation would be greatly appreciated read more ..

Spac3 Apr 28, 2018

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1303

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+59

On any particular Saturday evening, the probability that Jenna will go to the movies and go for coffee is 1/2.

On any particular Saturday evening, the probability that Jenna will go to the movies and go for coffee is 1/2. The probability that she will go to the movies, given that she has gone for coffee, is 3/7. What is the probability that Jenna will go for coffee read more ..

hayleeirene Apr 28, 2018

-1

1846

1

+59

A manufacturer produces soda cans and a quality control worker randomly selects two cans from the assembly line for testing.

A manufacturer produces soda cans and a quality control worker randomly selects two cans from the assembly line for testing. Past statistics show that 10% of the cans are defective. What is the probability that the two selected cans are defective if the read more ..

hayleeirene Apr 28, 2018

-1

714

0

+59

Consider two events such that P(A) =3/5 , P(B) = 2/3 , and P(A ∩ B) = 1/5. Are events A and B independent events?

Consider two events such that P(A) =3/5 , P(B) = 2/3 , and P(A ∩ B) = 1/5. Are events A and B independent events?
Yes, they are independent because P(A) ⋅ P(B) = P(A ∩ B)
No, they are dependent because P(A) ⋅ P(B) ≠ P(A ∩ B)
Yes, read more ..

hayleeirene Apr 28, 2018

-1

1816

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+59

In a city school of 1,200 students, 30% of the students are on the honor roll

In a city school of 1,200 students, 30% of the students are on the honor roll, 62% have a part-time job, and 24% are on the honor roll and have a part-time job. What is the probability (rounded to the nearest whole percent) that a randomly selected student read more ..

hayleeirene Apr 28, 2018

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1021

2

Mr. Z gave a test in Physics. Scores for the class are as follows:

Mr. Z gave a test in Physics. Scores for the class are as follows: 76, 55, 73, 93, 29, 74, 57, 34, 54, and 75 out of a possible 100 points. Assume scores from this test are normally distributed.

If this set of scores is representative read more ..

Guest Apr 28, 2018

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695

1

Mr. Z gave a test in Physics.

Mr. Z gave a test in Physics. Scores for the class are as follows: 76, 55, 73, 93, 29, 74, 57, 34, 54, and 75 out of a possible 100 points. Assume scores from this test are normally distributed.

Which three scores are the “most unusual”? read more ..

Guest Apr 28, 2018

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