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raketka [301]
4 years ago
13

What is the product of (5× + 1)(5x - 1)?

Mathematics
1 answer:
padilas [110]4 years ago
6 0

we are given

(5x + 1)(5x - 1)

we can distribute it

5x*5x-1*5x+1*5x-1*1

25x^2-5x+5x-1

now, we can simplify it

25x^2-1...............Answer

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N/-5 - 9 = 2 is what
Marizza181 [45]

n/-5 - 9 = 2

move -9 to the other side

sign changes from -9 to 9

n/-5-9+9=2+9

n/-5=2+9

n/-5=11

multiply both sides by -5/1 to find n

(n/-5)(-5/1)=11(-5/1)

n=-55

answer: n=-55

6 0
3 years ago
The Department of Education wishes to estimate the proportion of all college students who have a job off-campus. It surveyed 160
NeX [460]

Answer:  2. All college students

Step-by-step explanation:

A population is a large group of individuals that have some common feature by the researcher's point of interest.

Herero , the Department of Education wishes to estimate the proportion of all college students who have a job off-campus.

So , he need data of all students to compute the exact proportion.

But instead of that he surveyed 1600 randomly selected students which determine the sample.

Sample just gives the estimate of the parameter.

Hence, the population of interest to the Department of education is " All college students" .

7 0
4 years ago
Explain how to find vertical and horizontal asymptotes of a rational<br> equation.
AleksandrR [38]

Answer:

Step-by-step explanation: If the degree (the largest exponent) of the denominator is bigger than the degree of the numerator, the horizontal asymptote is the x-axis (y = 0).

If the degree of the numerator is bigger than the denominator, there is no horizontal asymptote.

8 0
3 years ago
a cardboard box holds 31.25 cubic inches of creamy butter. The butter is molded into a square prism that is 5 inches long. How m
lesya [120]

Answer:

62.5 \:in^2

Step-by-step explanation:

Volume of the butter in the cardboard = 31.25 cubic inches

Length of the Molded Square Prism =5 Inches

Let the length of the square cross sectional area = x

Volume of the Prism=x^2l

Since l=5 Inches

5x^2=31.25\\x^2=6.25\\x=2.5\: Inches

Next, we determine the surface area of the New Cardboard box to be made.

Length of the Cardboard Box=5 Inches

Length of the square cross sectional area = 2.5 Inches

Total Surface Area=2(x^2+xl+xl)=2(x^2+2xl)

=2(2.5^2+2(2.5)(5))\\=2(6.25+25)\\=2*31.25\\=62.5 \:in^2

Therefore, 62.5 \:in^2 of cardboard is needed,

4 0
3 years ago
What is the perimeter of a square, if the area is 9<br> square units?
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What dkksbsjs s sbdbndd
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