Efectuar el cuadrado de un binomio: ( x – 2y ) ^2 =Respuesta necesaria. Opción única.
(1 Punto)
x^2 – 4xy + 4y^2
x^2 + 4xy + y^2
x^2 – 4y^2
x^2 – 2xy + 4y^2
Answer:
La opción correcta es;
x² - 4·x·y + 4·y²
Step-by-step explanation:
La ecuación dada es (x - 2·y) ²
(x - 2·y) ² = (x - 2·y) × (x - 2·y) = x·x + x × (-2·y) + (-2·y) × x + (-2·Y) × (-2·y)
Lo que da;
(x - 2·y) ² = x² - x × 2·y - 2·y × x + (-2·y) ²
De lo que tenemos;
(x - 2·y) ² = x² - 2·y × x - 2·y × x + 4·y² = x² - 4·y × x + 4·y²
∴ (x - 2·y) ² = x² - 4·y × x + 4·y² = x² - 4·x · y + 4·y²
Y el resultado del cuadrado simplificado es (x - ·y) ² = x² - 4·y × x + 4·y² = x² - 4 · x · y + 4·y²
La opción correcta es (x - 2·y) ² = x² - 4·x · y + 4·y².
Xavier spent $84 on art supplies. The canvas for each of his paintings is an additional $1. He plans to sell his paintings for $8
Answer:
84 + x*1 = 8x
Step-by-step explanation:
Xavier needs to sell 12 painting to break even.
Solve for the slope of the graph.
Answer:
-3/4
Step-by-step explanation:
rise/run
^^^you go up 3 and move left 4
HELP DESPERATE WILL GIVE BRAINLIST FOR CORRECT ANSWER
Answer:
Look at the picture I attached!
Step-by-step explanation:
!!
a certain map shows two roads. road a is 1 1/4 miles long but is 1 1/2 inches long on the map. what the unit rate for inches per miles on this map? if road b is 10 miles long, how long is road b on the map?
Answer:
30 inches
Step-by-step explanation:
Length of road A = 1¼ miles
Length of road A on map = 1½ inches
Unit rate for inches per miles on the map = 1½ inches ÷ 1¼ miles = ³/2 ÷ ⁵/4 = ³/2 × ⅘ = ⁶/5 inches per mile
Length big Road B on map:
Road B actual length = 10 miles
Thus, using the unit rate of ⁶/5 inches to 1 mile, length of road B on map would be calculated as shown below:
⁶/5 × 10 = 6*5 = 30 inches
Road B is 30 inches long on the map.
What does a1 stand for?
Answer:
It stands for like top quality, the best of the best
Step-by-step explanation:
first rate or excellent/first class
hey can anyone pls answer dis math question rq!
Answer:
9 inchesStep-by-step explanation:
Original size = 6 ftScale factor = 1/8Clone = original * scale factor
Clone size
6 ft*1/8 = 3/4 ftConverted to inches
1 ft = 12 in3/4 ft = 3/4 * 12 in = 9 inWhich of the following is a solution to the equation
2x² + 4x=3+3x² ?
A) - 1
B) 0
C) 3
D) 6
Find the LCM (least common multiple) of 13 and 52.
LCM =
52, because 52 is a multiple of 13 (13*4 = 52)
Answer:
The answer is 52
Perform the indicated operation.
(-7) · (-5)
-12
-35
12
35
Answer:
35
Step-by-step explanation:
A negative number multiplied by a negative number is positive. Multiplication is repeditive addition.
(-7) * (-5) = -(-7 + -7 + -7 + -7 + -7) or -( -5 + -5 + -5 + -5 + -5 + -5 + -5 ) = 35.
Answer:
35 is the answer I remember my brother telling me that two negitives always makes a positive no matter the symbol
Step-by-step explanation: 7 x 5 = 35 that is really all you have to do. but this is a random tip always remember that two negitives equal a positve also when you add positve to negitive it goes right so say you have -5 + 5 that would equal zero. when you add negitive and negitve numbers it will have a negitive sum
how many times do 8 go into 18?
Answer: 2.25
Want free points?! Want free brainliest?! Come to my profile and just answer one of my questions. I am YOUR community builder who gives free things. ("Thanks" on ur profile, points, hacks, brainliest, etc.)
Put me as brainliest so I can receive 50% more points!
Answer:
2.5
Step-by-step explanation:
What is the y-intercept in this problem?
Answer:
y = -3
Step-by-step explanation:
The y-intercept is where the graph crosses the y-axis. The graph is seen crossing the y-axis at y = -3, the that y-intercept is at y = -3.
14
Bolve for the value of z:
5
Z
25
Answer:
The answer is 15
Step-by-step explanation:
Thats what I got
What number should be placed in the box to help complete the division calculation?
Answer:
260
Step-by-step explanation:
The snack bar at the school purchases water bottles at wholesale and then marks them up to make a profit. It marks up the water bottles by 33 and one-third percent, an amount of $0.28. What was the wholesale price of each water bottle?
Answer:
$0.84
Step-by-step explanation:
0.28 x 3 = 0.84
0.28 0.28 0.28
= 0.84
33% 33% 33%
Answer:
0.84
Step-by-step explanation: 0.28 + 0.28 + 0.28 = 0.84. i added it 3 times because you will divide by 3
what are you guys doing for Halloween lol I honestly am not feeling it this year
Answer:
im going to have fun with the fam and shifted one unit right and 5 units up
Step-by-step explanation:
Answer:
Me nether
Step-by-step explanat
Shifed 1 unit left and then 5 units up
Which equation shows a proportional relationship between x and y?
y = 16
y = 7x
y=−7x−2
y = 9x + 1
The equation that shows a proportional relationship is y = 7x.
How to find the equation that is proportional?Two variables have a proportional relationship if all the ratios of the variables are equivalent.
In other words, a proportional relationship is one in which two quantities vary directly with each other.
Therefore, a proportional relationship can be represented as y = kx.
where
k = constant of proportionalitythe variables are x and yTherefore, y varies directly as x in a proportional relationship.
Hence, the equation that shows proportional relationship is y = 7x as 7 is the constant of proportionality. y and x are the variables.
learn more on proportional relationship here: brainly.com/question/20213987
#SPJ1
Answer:
y = 7x
Step-by-step explanation:
the proportional relationship is y = 7x as 7 is the constant of proportionality. y and x are the variables.
GCF OF 16 20 and 24 .....
Answer:
the gcf of 16, 20, and 14 is 4
Answer:4
Step-by-step explanation:
16: 1,2,4,16
20:1,2,4,5,10,20
24: 1,2,3,4,6,8,12,24
The greatest common factor is four
Evaluate 42,147÷63. Round to the nearest whole number, if necessary.
Answer:
669 is the answer to this equation
Step-by-step explanation:
brainliest?
Answer:
669
Step-by-step explanation:
what is the coefficient of a^8b^2 in the expansion (1/3a^2 - 4b)^6
Step-by-step explanation:
(1/3a^2-4b)^6 for such an expansion the general term is
[tex]tr + 1 = \binom{6}{r} \times ( \frac{1}{3} {a}^{2} ) ^{6 - r} \times (4b)^{r} [/tex]
we want b^2 so r=2
so the formula transform to:
C6,2*(1/3)^4*a^8*4^2*b^2 so the coefficient of a^8b^2 is
(6*5/2*1)*(1/3^4)*4^2=
6*5*4*4/2*3*3*3*3=16*5/27=80/27
55.6666666667 as a fraction
Answer: Step-by-step explanation:
What is 5.56666666667 as a fraction?
To write 5.56666666667 as a fraction you have to write 5.56666666667 as numerator and put 1 as the denominator. Now you multiply numerator and denominator by 10 as long as you get in numerator the whole number.
5.56666666667 = 5.56666666667/1 = 55.6666666667/10 = 556.666666667/100 = 5566.66666667/1000 = 55666.6666667/10000 = 556666.666667/100000 = 5566666.66667/1000000 = 55666666.6667/10000000 = 556666666.667/100000000 = 5566666666.67/1000000000 = 55666666666.7/10000000000 = 556666666667/100000000000
And finally we have:
5.56666666667 as a fraction equals 556666666667/100000000000
Define constant of proportionality.
Answer:
Step-by-step explanation:
The constant of proportionality is the constant value of the ratio of two proportional quantities x and y, typically the equation is Y=KX. The constant of proportionality is, the value of Y is dependent on how the given value of X is effected by the constant of proportionality.
Help Please ASAP!!! anyone?!?
Step-by-step explanation:
This angle can be written in three different ways -
∠RST ∠S∠TSRTherefore,
Options A, B, C are correct.
Someone please help with this !!!!
Answer:
x = 132
Step-by-step explanation:
The 2 angles shown are alternate exterior angles and are congruent, thus
x = 132
A student performed the following steps to find the solution to the equation
+14x+8 = 0. Where did the student go wrong?
Step 1. Factor the polynomial into (X + 8) and (x-6)
Step 2. x+8 = 0 or x-6=0
Step 3. x= -8 or x = 6
A. in Step 1
B. The student did not make any mistakes, the solution is correct
C. in Step 2
D. in Step 3
Answer:
In step 2
Step-by-step explanation:
you were suppose to subtract them
How do you solve this?
Answer:
145
Step-by-step explanation:
180-137=43
43+102=145
Answer The answer is 145 because, as you see you need a 180 degree angle, so you have 137 and you need to make those two angles 180 so 180-137=43 so then you got 43+102 so that's 145 then you have that other angle so that'll be 35, so the ? mark will be 145 since that 180-35
Step-by-step explanation:
Brett has consumed 1,400 calories so far today. He has also burned off 400 calories at the gym. He would like to keep his daily calorie total to 2,000 calories per day. How many calories does he have left to consume for the day? Is 1,200 a viable solution to this problem?
I NEEED HELPP PLZZ :(
A Yes; 1,200 is less than 1,400.
B Yes; 1,200 is less than 2,000.
C No; 1,200 is more than the 400 he burned off at the gym.
D No; 1,200 will cause him to exceed 2,000.
Answer
D
Step-by-step explanation:
D is correct because 1,400-400= 1,000
so he can only consume 1,000 more calories so 1,200 will cause him to go over 2,000
What is the slope of a line parallel to y = 10?
Answer: y=6
Step-by-step explanation:
because y=10 is a vertical line so you can put any number in y= ____
A polygon has vertices whose coordinates are A(1.4), B(4, -1), C(-1,-4), and D(-4,1). Use the midpoint formula to determine whether or not the diagonals of polygon ABCD bisect each other. In your final answer, include all of your calculations.
there are 9 water bottles in devin's fridge. he adds two cases that are each missing a bottle of water. when he is done, there are 31 bottles in the fridge. how many bottles are in a case?
Answer:
12
Step-by-step explanation:
Add two to the number of water bottles (33), subtract 9 (24) and divide in half, giving you 12.