Which of the expressions below can be factor using the difference of squares method
Answers
The first thing you can do is look for a subtraction sign. The word difference implies subtraction, so you can rule out any expressions that add terms. Secondly, you can look for squares. 17x^2 - 23y^2 is a subtraction expression, but 17 and 23 are not squares. However, 25x^2 - 64x^2 is a subtraction expression and its terms are squares. 25 = 5x5, 64 = 8x8. Hope this helps!
Related Questions
Find an equation of the plane that contains the point p(5,1,4) and the line x = 2−t, y = 3 + t, t = 3−3t.
Answers
.. (5-2, 1-3, 4-3) = (3, -2, 1)
The cross product of this with the line's direction vector (-1, 1, -3) is (5, 8, 1). The dot product of that with any of the points in the problem statement is 37. Your plane equation can be written as
.. 5x +8y +z = 37
_____
A suitable vector calculator is very handy for this. I used an HP-48 app on my phone.
Classify the following triangle. check all that apply?
Answers
we know that
the triangle of the figure is
Equilateral------> because has three equal sides and three equal angles
Acute -------> because all three angles are less than [tex]90[/tex] degrees
The measure of each angle in a equilateral triangle is [tex]60[/tex] degrees
therefore
the answer is
A equilateral
D Acute
Answer:
Step-by-step explanation:
Adf
Two cards are drawn without replacements from a standard deck of 52 playing cards what is the probability of choosing a king for the second card drawn if the first card drawn was a queen
Answers
Answer:
Step-by-step explanation:
4
663
Explanation:
Probability of drawing a King is
4
52
Probability of drawing a queen
4
51
as the King was not put back.
So the probability of drawing one then the second would be
4
52
×
4
51
=
4
663
What is 5x 1/2? please use any type of model to show work...
Answers
You could also rearrange the question so put the fraction first and say what is:
1/2 of 5 which would equal 2.5 this would work for all questions like this. Hope I helped, have a nice day :)
5
.5
----
2.5
Jacobs toy box is 4 1/3 ft x 3ft x 5ft.what is the volume of his toy box
Answers
4 1/3------> (4*3+1)/3------> 13/3 ft
[volume of a rectangular prism]=length*width*height
[volume of a rectangular prism]=(13/5)*3*5------> 39 ft³
the answer is
the volume of the toy box is 39 ft³
Answer:
The volume of a toy box is 65 ft³ .
Step-by-step explanation:
Formula
Volume of a box = Length × Breadth × Height
As given the expression in the question
Jacobs toy box is [tex]4 \frac{1}{3}[/tex] ft x 3ft x 5ft.
i.e
Jacobs toy box is [tex]\frac{13}{3}[/tex] ft x 3ft x 5ft.
Put all the values in the formula
[tex]Volume\ of\ a\ toy\ box = \frac{13}{3}\times 3\times 5[/tex]
= 13 × 5
= 65 ft³
Therefore the volume of a toy box is 65 ft³ .
At Pizza Pi, 9% of the pizzas made last week had broccoli on them. If 27 pizzas had broccoli, on how many pizzas in all were made last week?
Answers
Given Information
----------------------------------------------------------
9% of pizza made had broccoli
27 pizza had broccoli
----------------------------------------------------------
Equation the information and find 1%
----------------------------------------------------------
9% = 27
1% = 27 ÷ 9
1% = 3
----------------------------------------------------------
Find 100%
----------------------------------------------------------
1% = 3
100% = 3 x 100
100% = 300 pizzas
----------------------------------------------------------
Answer: There were 300 pizzas made last week
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what is the slope of the line that contains (-3, 4) and (7, 5)
Answers
5-4 1
m = --------- = ---------
7-(-3) 10
what is a rational number between 9.6 and 9.7
Answers
A rational number between 9.6 and 9.7 is 93/20.
The given decimal numbers are 9.6 and 9.7.
What are the rational numbers?Rational numbers are in the form of p/q, where p and q can be any integer and q ≠ 0. This means that rational numbers include natural numbers, whole numbers, integers, fractions of integers, and decimals (terminating decimals and recurring decimals).
Now, (9.6+9.7)/2
= 19.3/2
= 9.65
So, the rational number is 965/100 = 93/20
Therefore, a rational number between 9.6 and 9.7 is 93/20.
To learn more about the rational numbers visit:
brainly.com/question/19161857.
#SPJ2
the school gets $5 for each T-shirt they sell at a fundraiser. They have a goal of raising $150. If $45 has been raised so far, how many more T-shirts do they have to sell
Answers
Ron needs paper for his class project. He buys 5 packs of paper and uses all but 3 pieces. If p stands for the amount of paper per pack, which expression can he use to find out the number of papers that he used?
Answers
1 pack = p pieces of paper
5 packs = 5p pieces of paper (multiply both sides by 5)
Ron uses 5 packs, so there are 5p pieces of paper total. He uses all but 3 pieces, meaning that he uses 5p-3 pieces of paper. So that's why 5p-3 is the answer
----------------------------------------------------------
Here's a more concrete example
Let's say p = 10. In other words, let's say there are 10 pieces of paper per pack.
If that's the case, then 5 packs yield 5*10 = 50 sheets total. This is the same as saying 5p = 5*10 = 50. All I've done is replace p with 10. The letter p is simply a placeholder.
If he uses all but three sheets of paper, then Ron uses 47 sheets since 50-3 = 47. A more longer way to see this is to plug p = 10 into the expression 5p-3 and we get
5p - 3 = 5*10-3 = 50 - 3 = 47
which helps us confirm we have the right expression. I recommend you try other values of p to generate more examples. Make sure p is a whole number and that it is a positive number.
----------------------------------------------------------
Once again the answer is 5p-3
In a certain state, license plates consist of three letters followed by three numbers.
a. how many
Answers
If there are no repeats then the answer is 11,232,000
i think this is correct im srry if it is not
Mauricio wants to fry 18 potatoes per hour for 3.5, point. He can fry 6 potatoes using each gallon of oil. How many gallons of oil does Mauricio need for frying potatoes? Choose 1 answer: A: 378 B:21 C:189 D:10.5
Answers
Answer:
The answer is option D.
Step-by-step explanation:
Mauricio wants to fry 18 potatoes per hour for 3.5 hours.
So, total becomes = [tex]18\times3.5=63[/tex]
As he can fry 6 potatoes using each gallon of oil.
So, for 63 potatoes, he will need = [tex]\frac{63}{6}=10.5[/tex] gallons.
Therefore, the correct answer is option D.
You are saving money to buy an electric guitar. You deposit $1000 in an account that earns interest compounded annually. The expression 1000(1+r)^2 represents the balance after 2 years where r is the annual interest rate in decimal form. Write a polynomial in standard form.
The interest rate is 3%. What is the balance of your account after 2 years.
The guitar costs $1100. Do you have enough money in your account after 3 years?
Answers
after 2 years?
[tex]\bf ~~~~~~ \textit{Compound Interest Earned Amount} \\\\ A=P\left(1+\frac{r}{n}\right)^{nt} \quad \begin{cases} A=\textit{accumulated amount}\\ P=\textit{original amount deposited}\to &\$1000\\ r=rate\to 3\%\to \frac{3}{100}\to &0.03\\ n= \begin{array}{llll} \textit{times it compounds per year}\\ \textit{annually, thus once} \end{array}\to &1\\ t=years\to &2 \end{cases} \\\\\\ A=1000\left(1+\frac{0.03}{1}\right)^{1\cdot 2}\implies A=1000(1.03)^2[/tex]
after 3 years?
[tex]\bf ~~~~~~ \textit{Compound Interest Earned Amount} \\\\ A=P\left(1+\frac{r}{n}\right)^{nt} \quad \begin{cases} A=\textit{accumulated amount}\\ P=\textit{original amount deposited}\to &\$1000\\ r=rate\to 3\%\to \frac{3}{100}\to &0.03\\ n= \begin{array}{llll} \textit{times it compounds per year}\\ \textit{annually, thus once} \end{array}\to &1\\ t=years\to &3 \end{cases} \\\\\\ A=1000\left(1+\frac{0.03}{1}\right)^{1\cdot 3}\implies A=1000(1.03)^3[/tex]
is that enough to pay the $1100?
now, let's write 1000(1+r)² in standard form
1000( 1² + 2r + r²)
1000(1 + 2r + r²)
1000 + 2000r + 1000r²
1000r² + 2000r + 1000 <---- standard form.
The balance of your account after 2 years is $1,060.90. You do not have enough money in your account after 3 years to buy the $1100 guitar.
Explanation:To write a polynomial in standard form for the balance after 2 years, we substitute the given interest rate of 3% (0.03 in decimal form) into the expression $1000(1+r)^2. This gives us $1000(1+0.03)^2. Simplifying this equation, we have:
$1000(1+0.03)^2
= $1000(1.03)^2
= $1000(1.0609)
= $1,060.90
Therefore, the balance of your account after 2 years is $1,060.90.
To determine if you have enough money in your account after 3 years to buy the $1100 guitar, we can substitute the values into the expression $1000(1+r)^3. Using the same interest rate of 3% (0.03 in decimal form) and solving the equation, we have:
$1000(1+0.03)^3
= $1000(1.03)^3
= $1000(1.0927)
= $1,092.70
Since $1,092.70 is less than the cost of the guitar, you do not have enough money in your account after 3 years to buy the guitar.
carlos walked 2 miles on Monday and 5 miles on Saturday. the number of miles he walked on thise two days is 3 miles more than the number of miles he walked on Friday. write and solve an addition equation to find the number of miles Carlos walked on Friday.
Answers
GPA calculation assignment
I need help please
Answers
quality points is 76
gpa is
gpa would be 3.20
if f(x)=2x and g(x)=x^2-1 which statement is true?
A. (f*g)(x)=2x^2 -1
B.(f*g)(x)=2x(x^2-1)
C.(g*f)(x)=4x-1
D.(g*f)(x)=4x^2-1
Answers
We have then:
f (x) = 2x
g (x) = x ^ 2-1
Multiplying we have:
(f * g) (x) = (2x) * (x ^ 2-1)
Answer:
The following statement is correct:
B. (f * g) (x) = 2x (x ^ 2-1)
On a trip, you had to change your money from dollars to British pounds. You got 560560 pounds for 800800 dollars. How many pounds will you get for 300300 dollars?
Answers
800,800÷300,300= 2.66666.... (recurring)
If $300,300 goes into $800,800 2.66666 times, then the amount of pounds you want to find goes into £560,560 2.66666 times as well. Let's write this as an equation to solve for x (where x is the amount of pounds you will obtain for $560,560):
2.66666x = 560,560
Divide both sides by 2.66666
x = 210,210
Therefore, you will get £210,210 for $300,000
The graph of f(x) is shown below.
(First image below)
If g(x) and f(x) are inverse functions, which graph represents g(x)?
A. 2nd Graph below
B. 3rd Graph below
C. 4th Graph below
D. 5th Graph below
Answers
[tex]f(x) = \sqrt{x} [/tex]
to find the inverse, replace f(x) with y, switch the x and the y, then solve for y
[tex]f(x) = \sqrt{x} ... \: y = \sqrt{x} \\ x = \sqrt{y} \\ {( \sqrt{y})}^{2} = {x}^{2} \\ y = g(x) = {x}^{2} [/tex]
The only graph showing exponential growth is the 2nd graph (note how at 1 it's 1, at 2 it's 4, at 3 it will be 9, etc.)
Given that we have the graph of f(x), we want to see which one is the graph of its inverse. The correct option is B, the third graph.
Remember that two functions f(x) and g(x) are inverses if:
f(g(x)) = g(f(x)) = x
This also means that if:
f(x) = y
then g(y) = x.
So we basically should have the exact same graph of f(x), but we just "interchange" the two axes.
From this, we can see that the correct option is the third graph (the one where the curve goes upwards. So the correct option is B.
If you want to learn more about inverse functions, you can read:
https://brainly.com/question/10300045
When the polynomial is written in standard form, what are the values of the leading coefficient and the constant?
5x + 2 – 3x2
Answers
First, we must define the words "leading coefficient" and "constant."
Take a look at the simple definitions...
Leading coefficient- the number behind the term with the highest exponent
Constant- the number without any variable in front of it
This means that for the polynomial
5x+2-3x^2 the leading coefficient is -3 because it is the number behind the term with the highest exponent! The constant is 2 because there are no variables behind it.
I really hope this helps!
Best wishes :)
A square hamburger is centered on a circular bun. Both the bun and the burger have an area of 16 square inches. How far, to the nearest hundredth of an inch does each corner of the burger stick out from the bun? Explain.
Answers
.. 16 in^2 = πr^2
.. r = (4 in)/√π ≈ 2.25676 in
The distance from the corner to the center of the square hamburger is
.. d = 4 in/√2 = 2√2 in ≈ 2.82843 in
The burger will stick out
.. (2.82843 -2.25676) in ≈ 0.57 in
Express the decimal as a percent. 0.24
Answers
Final answer:
To express the decimal 0.24 as a percent, you would multiply it by 100. The decimal 0.24 can be expressed as 24%.
Explanation:
To convert a decimal to a percent, you need to multiply it by 100. In this case, to express the decimal 0.24 as a percent, you would multiply it by 100.
0.24 * 100 = 24
So, the decimal 0.24 can be expressed as 24%.
A percent represents a part per hundred.
When you multiply a decimal such as 2.4 by 100 to find its percent equivalent, you move the decimal point two places to the right. If there are not enough decimal places, we use zeros as placeholders.
Therefore, 2.4 times 100 is 240, and 0.24 times 100 is 24, which gives us 24%.
Julie is going to a store to buy vases to use as centerpieces at her party. Small vases cost $2 and large vases cost $4. She needs to buy a minimum of 15 vases, and can spend a maximum of $50.
Which system of linear inequalities represents this situation? Let s represent the number of small vases and l represent the number of large vases.
A
s + l ≥ 15
2s + 4l ≤ 50
B
s + l ≤ 15
2s + 4l ≥ 50
C
s +l ≥ 50
2s + 4l ≤ 15
D
s + l ≥ 15
2s +4l ≥ 50
Answers
D: the second equation is wrong. She wants to be under 50
C: The system is confusing money with the number of vases
B: The answer is wrong. She wants to spend under or equal to 50 not over.
Machine A makes 50 more than 4 times the number of parts that Machine B makes each day. If Machine A makes 450 parts each day, how many parts does Machine B make each day? 100 125 500 1850
Answers
Answer:
125 is NOT the right answer. read the question out completely. 100 is your answer.
Step-by-step explanation:
you're supposed to write an algebraic expression for 50 more than 4 times the number of parts that Machine B makes and set that equal to 450.
The student body of a large university consists of 65% female students. a random sample of 8 students is selected. what is the probability that among the students in the sample at least 7 are female?
a. 0.1064
b. 0.0896
c. 0.1373
d. 0.1692
Answers
hope this helps x
how many factors in the expression 8(x+4)(y+4)(z2+4z+7)have exactly two terms
Answers
- 8
- (x + 4)
- (y + 4)
- (z² + 4z + 7)
Terms are separated by "+" and "-" signs, so that eliminates the first factor, which only has one term. The fourth factor has two "+" signs, and as you can see, it has three terms; that one is out as well. The last two factors both have only one "+" sign, and they both have two terms. Therefore...
Answer:
Two factors in the expression 8(x + 4)(y + 4)(z² + 4z + 7) have exactly two terms.
PLEASE HELP EXPLAIN THIS!?!
(picture below)
I have part A however idk how to work out part B how would i write the equation out???
Answers
We find the slope by choosing two points that are on the line:
(9, 18) is easy to spot; and (2, 7) is fairly easy to spot as well. The formula for slope is:
m=y₂-y₁/x₂-x₁
m=7-18/2-9 = -11/-7 = 11/7
Slope intercept form, y=mx+b, has the slope and the y-intercept. Plugging those in we have y=11/7x+3.
y-yo = m (x-xo)
We look for the slope:
m = (y2-y1) / (x2-x1)
m = (18-15) / (9-7)
m = (3) / (2)
m = 3/2
We write the equation choosing any point:
y-15 = (3/2) (x-7)
we rewrite the equation:
y-15 = (3/2) x-10.5
y = (3/2) x-10.5 + 15
y = (3/2) x + 4.5
Then, for x = 13 we have:
y = (3/2) * (13) +4.5
y = 24
Answer:
The equation is:
y = (3/2) x + 4.5
The number of matches won for 13 months is:
y = 24
(I will give the brainliest! Please answer quickly)
Leia cuts congruent triangular patches with an area of 21 square centimeters from a rectangular piece of fabric that is 14 centimeters long and 6 centimeters wide. How many of the patches can Leia cut from 31 pieces of the fabric?
Answers
The main span of Bridge A (2300 feet) is _____ percent shorter than the main span of Bridge B (4700 feet).
Answers
To do this you divide the difference in lengths by the starting length. We start with the main bridge.
4700-2300=2400
2400/4700 is about 51.1% shorter.
The main span of bridge A is 51.1% shorter than the main span of bridge B.
Span of bridge A = 2300 feets
Span of bridge B = 4700 feets
Percentage difference in span length :
[(difference in span) / span of B] × 100%
Difference in span = 4700 - 2300 = 2400
Percentage difference = (2400 ÷ 4700) × 100%
Percentage difference = 0.5106 × 100% = 51.1%
Therefore, the main span of bridge A is 51.1% shorter than the main span of bridge B.
Learn more :https://brainly.com/question/13218948
Hi can someone please help me? If sin2A=cos 3A find the value of A. Can you please explain in full detail how you arrived at your answer? Also Find the exact value of (sec30)^2. Will I need to use a calculator in order to solve this prob?
Answers
sin(2A) = cos (90 - 2A)
=cos (3A)
90 - 2A = 3A
5A=90
A=18
A packet processed by an internet router carries either audio information with probability 7/10, video, with probability 2/10, or text with probability 1/10. the probability that the router processes 70 audio packets, 20 video packets, and 10 text packets in a sequence of 100 packets is:
Answers
Here we have three variables,
a=number of audio packets
v=number of video packets
t=number of text packets
we note that a+v+t=100 (as given)
and correspondingly,
A=number of audio packets in the pool
V=number of video packets in the pool
T=number of text packets in the pool
Here, the pool is from a population such that the probabilities of selecting each type are respectively 0.7, 0.2 and 0.1 (as given).
Defining C(n,r)=n!/(r!(n-r)!) as the number of combinations of r objects chosen out of n.
In a pool of 1000 packets, then A=700, V=200 and T=100.
The multivariate hypergeometric distribution gives
P(70,20,10,1000)
=C(700,70)*C(200,20)*C(100,10)/C(1000,100)
=0.0147526
In a pool of 100000 packets, then A=70000,V=20000,T=10000.
The multivariate hypergeometric distribution gives
P(70,20,10,1000)
=C(70000,70)*C(20000,20)*C(10000,10)/C(100000,100)
=0.0132925
Since the population has a size of infinite, we will try to approach the value by choosing an even larger population, say, 1000000,
P(70,20,10,1000000)=0.0132806
Next try
P(70,20,10,1000000000)=0.013279255
P(70,20,10,1000000000000)=0.013279254
...
So we can conclude that
P(70,20,10,population)=0.013279 with almost certainty.