Answers
Answer:
(a² + b² + 3ab)(a² + b² - 3ab)
Step-by-step explanation:
a⁴ - 7a²b² + b⁴
= (a⁴ + 2a²b² + b⁴) - 9a²b²
= (a²+b²)² - (3ab)²
= (a² + b² + 3ab)(a² + b² - 3ab)
Related Questions
Solving Equations with the Variable on Each Side
Justify each step.
a.
b.
1. 4k-3=2k + 5
4k-3-2k= 2k +5 - 2k
2k-3 = 5
2k-3+3=5+3
2k=8
2k_8
2 2
k=4
C.
d.
e.
f.
Answers
Answer:
See below
Step-by-step explanation:
4k - 3 = 2k + 5 Given
4k - 3 -2k = 2k + 5 - 2k Addition (added -2k to both sides )
4k - 2k - 3 = 2k - 2k + 5 Commutative (changed the order of the terms)
2k - 3 = 0 + 5 Addition/ Identity
2k - 3 = 5 Addition
2k - 3 + 3 = 5 + 3 Addition (added 3 to both sides)
2k + 0 = 8 Addition
2k = 8 Identity
Only answer please please
Answers
Answer: D
Step-by-step explanation:
Answer:$22.50
Step-by-step explanation:
The three friends already paid the entrance fee. The question asks how much MORE will they pay for 5 MORE rides (8-3 rides). Since tickets are $1.50 each, and we have 3 people:
($1.50/ticket)*(5 tickets/person)*(3 persons) = $22.50 more.
[Note how the units cancel, leaving just $]
HELPPPPPPPPPPPPPPPPPPPPPPPPPP (I know the one selected isn’t right FYI)
Answers
Answer:
The correct choice is option a. -3x^2 + xy + 3x - y + 2
Step-by-step explanation:
(xy + 3x + 2) - (3x^2 + y)
= xy + 3x + 2 - (3x^2 + y)
= xy + 3x + 2 - 3x^2 - y
= -3x^2 + xy + 3x - y + 2
The correct answer of the given choices i think it would be A
50 POINTS!
PLEASE HELP THIS MAKES NO SENSE AT ALL!! IM BEING TIMED
Answers
Answer: the last one i think if i'm wrong then im so sorry
PLEASE HELP ASAP I WILL GIVE U A LOT OF POINTS AND BRAINLIEST :D
Answers
Multiply to get the answer:
4×10⁷ * 3.65×10² = (4*3.65)×10⁷⁺² = 14.6×10⁹ = 1.46×10¹⁰ krill#2Convert to scientific notation and find the ratio of the second number by the first:
26000000000 = 2.6×10¹⁰Divide:
4.94×10¹³ ÷ 2.6×10¹⁰ = (4.94/2.6)×10¹³⁻¹⁰ = 1.9×10³ = 1900 timesWhat is the slope of the following line?
A. 1/3
B. - 1/3
C. 3
D. - 3
Answers
Answer:
A
Step-by-step explanation:
Points of origin are (-3,0) and (0,1). Now we determine if it is a positive slope, it is as it goes up not down. It goes up 1 unit and over to the right 3 units, making the slope 1/3.
what fraction of an hour is 5 minutes in its simplest form
Answers
Answer:
1 / 12
Step-by-step explanation:
one hour = 60 minutes
so
5 / 60
= 1 / 12
Answer:
[tex]\frac{1}{12}[/tex]
Step-by-step explanation:
There are 60 minutes in 1 hour , then 5 minutes as a fraction of an hour is
[tex]\frac{5}{60}[/tex] = [tex]\frac{1}{12}[/tex] ← in simplest form
Cho tam giác ABC vuông tại A có cạnh BC=10 AC=8 tính cạnh AB
Answers
Answer:
AB = 6
Step-by-step explanation:
Áp dụng định lý Pytago, ta có:
AB^2 + AC^2 = BC^2
=> AB = [tex]\sqrt{BC^{2}-AC^2 }[/tex]
[tex]=\sqrt{10^2 - 8^2} \\= \sqrt{100 - 64} \\= \sqrt{36} \\= 6[/tex]
A copy machine makes 32 copies per minute how long does it take to make 152 copies?
Answers
Answer:
It should take about 4.75 min.
Step-by-step explanation:
Hope this helps and could you mark me as the brainliest
Please help me translate this Hindi Grammar Notes into English
Answers
Step-by-step explanation:
kind of sentencesIndia is a great countryLakshmi was bitten by Rahmankind of sentencebasis of their meaningsbasis of their constructionsbasis of their construction sentences are three typessimple sentencefor example the sky is bluecompound sentencefor example the plane which I take in that is blue in colourcomplex sentencefor example the pain which I take in tomorrow that is blue in that colour is blue in type......
Help me plz and thank you
Answers
x-2x=-25-5
-x=-30°
x=30°
x+5°= y+28°
30°+5°= y+28°
35°= y+28°
y= 35°-28°
y=7°
cot 10° . cot 20°. cot 70°. cot 80°. cot 45° = 1
Answers
Answer:
steps below
Step-by-step explanation:
cot 10° * cot 20° * cot 70° * cot 80° * cot 45°
= (cos 10°/sin 10°)*(cos 20°/sin 20°)*(cos 70°/sin 70°)*(cos 80°/sin 80°)* (1)
= (cos 10°*cos 80°)(cos 20°*cos 70°) / (sin 10°*sin 80°)(sin 20°*sin 70°)
= (1/2*(cos60°+cos90°)*1/2(cos50°+cos90°))/(1/2*(cos60°-cos90°)*1/2(cos50°-cos90°)) ... cos90° = 0 cos60° = 1/2
= (1/8*cos50°) / (1/8*cos50°)
= 1
HELP PLZ!!!!!!!!!!! WILL GIVE BRAIN!!!!!!!
Answers
Answer: 1 go to 1 the 2 go to 5 the 3 go to 3 the 4 go to 2 the 5 go to 4
Step-by-step explanation: i hop this helps if not sorry :(
If 1 1/4 kilo of meat is 320 pesos. How much will it need to purchase 5 1/2 kilos of meat?
Answers
Answer:
450 pesos
Step-by-step explanation:
5 kilograms is equal to 400 pesos.
5/12 would be 450 pesos.
A company’s stock was selling at $20 a share. A month later, it was selling at $26 a share. What is the percent gain
Answers
Answer:
The percent gain would be 77952515`0%
Algebra 2 11th grade
Answers
4. If x = y + 3, then in the second equation you can write
-3 (y + 3) + 3y = 6
Expanding and simplifying gives
-3y - 9 + 3y = 6
-9 = 6
but this is clearly not true, so this system as no solution.
5. Solve the first equation for x :
x + 2y = 4 ===> x = -2y + 4
Substitute into the other equation:
2 (-2y + 4) - 3y = 1
-4y + 8 - 3y = 1
-7y = -7
y = 1
Solve for x :
x = -2•1 + 4
x = -2 + 4
x = 2
6. Solve the first equation for y :
2x - y = 6 ===> y = 2x - 6
Substitute into the other equation:
x + 2 (2x - 6) = -2
x + 4x - 12 = -2
5x = 10
x = 2
Solve for y :
y = 2•2 - 6
y = 4 - 6
y = -2
7. Solve either equation for x :
x + 4y = 10 ===> x = -4y + 10
Substitute into the other equation:
(-4y + 10) - 2y = -8
-6y = -18
y = 3
Solve for x :
x = -4•3 + 10
x = -12 + 10
x = -2
8. Solve the first equation for y :
-2x + y = 1 ===> y = 2x + 1
Substitute into the other equation:
4x - 2 (2x + 1) = 5
4x - 4x - 2 = 5
-2 = 5
This is false, so there is no solution.
9. Solve the second equation for x :
-x - 4y = -3 ===> x = -4y + 3
Substitute into the other equation:
2 (-4y + 3) + 8y = 6
-8y + 6 + 8y = 6
0 = 0
This means any value of x and y will satisfy these two equations, so there are infinitely many solutions.
Matt's pool table is 3 feet wide and 9 feet long. Matt wants to replace the felt on the pool table. The felt costs $4.00 per square foot. How much would it cost in total to replace the felt on the pool table?
Answers
Answer:
$108
Step-by-step explanation:
3X9= 27square foot. Then you multiply 27 by 4, which equals $108
PLS HELP ME
PLS HELP ME
Answers
Answer:
A x=-8 or x=-2
B x=-4 or x=-3
C x=-1 or x=-12
Which answer choice shows that the commutative property does NOT hold for matrix multiplication?
Answers
Answer:
D.
Step-by-step explanation:
AB is NOT equal to BA in matrix multiplication.
It is not commutative.
Mrs. James needs to have her Jeep repaired but does not want to spend more than $375 for the repairs. The mechanic says that the part needed for the repair will cost $100 and the labor will cost an additional $40 per hour. Which inequality represents the greatest number of hours the mechanic can work without exceeding Mrs. James' budget?
Answers
Answer:
375 = 40x + 100
Step-by-step explanation:
A town is roughly in the shape of a rectangle * 600 m by 270 m. What is the approximate area of the town in hectares?
Answers
Answer:
Area in Hectares = 16.2 hectaresStep-by-step explanation:
Area of a rectangle: length × width
A = 600 × 270
A = 162,000 meters
162,000 meters ⇒ 16.2 hectares
Triangle ABC is graphed in the coordinate plane.
Answers
Answer:
the answer is d
Step-by-step explanation:
just see the matching coordinates
1 3x5 x 2 1x3 i don't know what eles to right but what is the answer
Answers
i dentify the given condition anf the unknown
Answers
Answer:
Is there a picture i could go by to answer your question or is this is?
Graph f(x) = -3/4x - 4.
Answers
Answer:
PLS HELP ME 7
Step-by-step explanation:
PLEASE help!! I’ll give brainliest!!
The graph shows the number of gallons in a pool being drained and
represents a linear function.
Which statement about this function is correct?
A. The y-intercept is (0, 8500), and the 8500 represents the number
of gallons before draining the pool.
B. The y-intercept is (0, 8500), and the 8500 represents the number of
gallons drained per hour.
C. The y-intercept is (8500, 0) and represents the number of hours it
takes to drain the pool.
D. The y-intercept is (8500,0) and represents the number of gallons
drained per hour.
Answers
Answer:A. The y-intercept is (0, 8500), and the 8500 represents the number
of gallons before draining the pool.
Step-by-step explanation:
The y-intercept is (8500,0) and -540 represents the number of gallons drained per hour. Then the correct option is D.
What is a linear equation?A connection between a number of variables results in a linear model when a graph is displayed. The variable will have a degree of one.
The linear equation is given as,
y = mx + c
Where m is the slope of the line and c is the y-intercept of the line.
The graph shows the number of gallons in a pool being drained and represents a linear function.
Let 'x' be the number of hours and 'y' be the volume. And the points are (4, 6340) and (6, 5260). Then the equation of the line is given as,
(y - 6340) = [(6340 - 5260) / (4 - 6)] (x - 4)
y - 6340 = - 540x + 2160
y = - 540x + 8500
The y-intercept is (8500,0) and -540 represents the number of gallons drained per hour. Then the correct option is D.
More about the linear equation link is given below.
https://brainly.com/question/11897796
#SPJ2
A car is traveling at 65 mi/hour. What is the car's speed in feet per second?
Answers
Answer:
65 mph = 95.3 feet per second
On the grid below, which point is located in the quadrant where the x-coordinate is a negative number and the y-coordinate is a positive number? ASAP!!
Group of answer choices
A
B
C
D
Is it B?
Answers
Answer:
B
Step-by-step explanation:
B is on the upper half of the plane meaning its y-value is positive, however it is on the left side of the plane meaning its x-value is negative.
A would be (+,+)
C would be (-,-)
D would be (+,-)
How much is 9396 divided by 18? Use partial quotients to answer.
Answers
Answer:
9396/18 is 522
PLEASE HELP WILL MARK BRAINLIEST NO FAKE ANSWERS
Arrange it in descending order and give the degree of the polynomial.
Answers
Answer:
the degree is 5
they are in decending order
Step-by-step explanation: