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3 years ago

Write an algebraic expression fh each verbal expression.

Mathematics

1 answer:

PtichkaEL [24]3 years ago

4 0

Answer:

2×y^2

Step-by-step explanation:

i hope it helped you a lot. thankyou

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Evaluate the expression for the given value of the variable.<br><br> |4b-8|+|-1-b^2|+2b^3;b=2

Elena-2011 [213]

In this question we already know the value of 'b' so put the value b=2 in the equation

=|4(2)-8| + |-1-(2)^2| + 2(2)^3

=|8-8| + |-1-4| + 2(8)

=0 -5 +16

=11

4 0

3 years ago

Which equation represents an inverse variation? y = 2x y = x/3 y =4/x y = –5x

Marizza181 [45]

First of all, you should know that:
direct variation:
y = c * x
Inverse variation:
y = c / x
where, c is any number that belongs to the real ones.
answer:
An equation that represents an inverse variation is
y = 4 / x

7 0

3 years ago

Help me if you know..

jenyasd209 [6]

Answer:

$3 \sqrt{3}$

Step-by-step explanation:

See the attachment for better understanding..

8 0

3 years ago

nu is designing a rectangular sandbox. the bottom is 16 square feet. which dimensions require the least amount of material for t

SCORPION-xisa [38]

Answer:

The least amount of dimensions would be using a 4ft x 4ft base.

Step-by-step explanation:

When looking to maximize area and minimize materials, a perfect square always does this. To prove the point, consider the 4 x 4 box in the answer to say a 16 x 1 box, which would have the same area.

The 4 x 4 box would have 4 sides each of 4 ft. Therefore, it would have 16 feet of sides to construct.

Meanwhile, there would be two sides on the other one that were 16 ft alone.

3 0

3 years ago

A test consists of 10 true/false questions. To pass the test a student must answer at least 88 questions correctly. If a student

Zanzabum

Answer:

The probability that the student is going to pass the test is 0.0545

Step-by-step explanation:

The variable that says the number of correct questions follows a Binomial distribution, because there are n identical and independent events with a probability p of success and a probability 1-p of fail. So, the probability of get x questions correct is:

$P(x)=\frac{n!}{x!(n-x)!} *p^{x} *(1-p)^{n-x}$

Where n is equal to 10 questions and p is the probability of get a correct answers, so p is equal to 1/2

Then, if the student pass the test with at least 8 questions correct, the probability P of that is:

P = P(8) + P(9) + P(10)

$P=(\frac{10!}{8!(10-8)!}*0.5^{8}*(0.5)^{10-8})+(\frac{10!}{9!(10-9)!} *0.5^{9} *(0.5)^{10-9})+(\frac{10!}{10!(10-10)!} *0.5^{10} *(0.5)^{10-10})$

P = 0.0439 + 0.0097 + 0.0009

P = 0.0545

8 0

3 years ago