Factorise x² - x with explanation please?
Answer:
x(x + 1)
Step-by-step explanation: This is an important way of solving quadratic equations. The first step of factorising an expression is to 'take out' any common factors which the terms have. So if you were asked to factorise x² + x, since x goes into both terms, you would write x(x + 1)
Which of the following statements about JK and JL is true? 13 12 10 5 L(7.4) K(-4,2) 2 J(2, 1) 1 2 3 4 5 6 7 -7-6-5-4-3-2-1 O A. JL is longer than JK. O B. JK is 7 units long. O C. JK and JL are the same length. D. JK is longer than JL.
Answer:
I think It´s C
Step-by-step explanation:
PLEASE I NEEEED HELPPPPP ASAP LOOK AT THE PICTURE
Answer:
on product side there will also 6 carbon atom
i will give branlyest for the first person to answer it
Answer:c
Step-by-step explanations: you have to change the subtraction to addition which changes your negative to a positive so then you add those two together
Please shows step by step if possible for I can understand this.
Answer:
f(4)=52
Step-by-step explanation:
First, you substitute the x's with 4, so it would be
f=3*4^2+2*4-4
f=48+8-4
f=52
Hope this helps
Simplify:
please and ty
Please help me i will give you the brainlist crown  thanks!
( last word says parallelogram)
Answer:
77
Step-by-step explanation:
I am right for sure
BC = 36; D = 15. What is the value of BD - AC.
B
A
BD - AC =
Answer:
BD - AC = 0
Step-by-step explanation:
Given that:
BC = 36 , CD = 15 and BD = x
As these are forming right angled triangle,
Using Pythagorean theorem,
[tex](BD)^2+(CD)^2=x^2\\(36)^2+(15)^2 = x^2\\1296 + 225 = x^2\\1521 = x^2\\[/tex]
Taking square root on both sides
[tex]\sqrt{x^2}=\sqrt{1521}\\x=39[/tex]
As the given shape is rectangular, the sides parallel to each other will have same values.
AB = 15 , AD = 36 and AC = x
[tex](15)^2+(36)^2 = x^2 \\225 + 1296 = x^2 \\1521 = x^2 \\x = 39[/tex]
Now,
BD - AC = 39 - 39 = 0
Hence,
BD - AC = 0
Find an ordered pair that satisfies the function y = 3x - 10.
Answer:
Step-by-step explanation:
Choose 0 to substitute in for x to find the ordered pair. Remove parentheses. Simplify 3(0)−10 3 ( 0 ) - 10 .
easy algebra 1 & it's worth 65 points!! marking brainliest!! PLS HELP
pls show ur work
1) solve the following system of equation using the elimination method. show all steps clearly to demonstrate ur understanding of the method. show your work.
-4x+9y=9
x-3y=-6
2) solve the following system of equations using the substitution method. show all steps clearly to demonstrate your understanding of the method. show your work.
x+3y=1
-3x-3y=-15
Answer:
Step-by-step explanation:
cc
x - y = 1
- 4x + 3y = 5
Solve by elimination
Answer:
x= -8, y= -9
Step-by-step explanation:
(try and use m a t h w a y. It gives answers to everything) :)
please open the file and answer it, i need a answer today
Answer:
541.1 square feet
Step-by-step explanation:
A = πr²
1) convert in. to ft because answer is in sq. ft
78 in => 6.5 ft
2) Find radius of entire area
6.5 ft + radius of inner circle
6.5 + 10 = 16.5
3) Calculate area of combined circles
A = π(16.5)²
A = 855.3 sq. ft
4) Find area of inner circle
A = π(10)²
A = 314.2 sq. ft
5) Subtract area of inner circle from combined area
855.3 sq ft - 314.2 sq. ft = 541.1 sq. ft
2. Subtract: 7 - 2.5
1
o
5
O
5.5
5.0
4
Given a sphere with a radius of 3cm, find its volume to the nearest whole number.
Answer:
V≈113.1cm³ radius = 3 cm
Step-by-step explanation:
Answer:
v=113.1cm^3
Step-by-step explanation:
The number 299 is divided into two parts in
the ratio 5:8. The product of the numbers
(A) 21140
(C) 21160
(B) 21294
(D) 31294
For a quadratic function where the vertex is at (-5,7), where is the axis or line of symmetry
located??
Answer:
-5
Step-by-step explanation:
The axis of symmetry is the x- axis of the vetex.
which of the following is a function ?
Answer:
You didn;t give any choices??
Step-by-step explanation:
Solve for b. ab + c = d
Answer:
ab+c=d
-c
ab=d-c
/a
b=d-c/a
Step-by-step explanation:
Chi has a big pile of nickels. He says, “Even if I use 100 of these nickels, I’ll still have 95% of my original pile.” How many nickels does Chi have?
Answer:
2000
Step-by-step explanation:5%= 100 nickels
1%= 20 nickels
20 x 100 = 2000
Answer:
2,000
Step-by-step explanation:
If 5%=100 nickels , then 20x100=the number of nickels Chi has.
20x100=2,000
Suppose ADEF is the image of a translation of AABC. If D is at (-6, -2), what translation rule maps 4ABC to ADEF?
Answer: D. T <-9, -2> (ΔABC) = ΔDEF
Step-by-step explanation:
D = A
A (3, 0) --> D (-6, -2)
To get the x-coordinate of D, you add -9 to 3
To get the y-coordinate of D, you add -2 to 0
T <-9, -2> (ΔABC) = ΔDEF
Hope this helped!
please help me out 1 question bellow about angles ty
A total of 513 tickets were sold for the school play. They were either adult tickets or student tickets. There were 63 more
student tickets sold than adult tickets. How many adult tickets were sold?
please help me with this fast, because i don't understand it
Answer:
3/4
Step-by-step explanation:
f(0) - f(3) / 0 - 3
f(0) = -4
f(3) = 9/4 - 16/4 = -7/4
f(0) - f(3) = [-4 - (-7/4)]
f(0) - f(3) = [-16/4 + 7/4]
f(0) - f(3) = -9/4
-9/4 ÷ -3 = -9/4 · -1/3 = 3/4
A pole casts a shadow that is 21 feet long. A 3-feet-tall child standing next to the pole casts a shadow that is 9 feet long. How tall is the pole?
x+10,-8x -9y=-1Solve using substitution
Answer:
x +10 =0 (1)
-8x -9y=1 (2)
x=-10 => (2) 80-9y=1 =>y=9
=> x=-10, y=9
Step-by-step explanation:
Shoes Galore sells a red pair of sneakers for $78. If the cost of the shoes is $24 , how much is the markup rate ?
PLEASE HELP !!!
Answer:
225%
Step-by-step explanation:
Find the difference between the two prices, then divide it by the original price:
78 - 24 = 54
54/24
= 2.25
So, the markup rate is 225%
2x^4=50 solve by factoring
Answer:
2(x4 − 25) = 0
Step-by-step explanation:
In his last football game, Sean rushed for 89 yards. If his season total is 871 yards, how many total yards did he have prior to his last game?
Answer:
782
Step-by-step explanation:
Since it's asking for the before game miles youd have to take he total yards.
(871)
The you wanna take the total yards ran from that one game.
(89)
Then just subtract by the number of yards total and the number of yards ran in that one game.
871-89=782
Write an addition problem that is equivalent to -5- (-8)
Answer:
I don't know if I understood correctly but here is the answer I think could be right.
-5-(-8)=3
2+1=3
Please help this is my last question
Please don't put a random answer just for points
zoom in to see picture clearer ty^^
3a² - 24ab + 48b² = 3 ( a - 4b )²
Step-by-step explanation:We will start by rewriting the given quadratic polynomial,
3a² - 24ab + 48b²
Taking out the common "3",
=> 3 ( a² - 8ab + 16b² )
Splitting the middle term i.e. " - 8ab " appropriately,
=> 3 ( a² - 4ab - 4ab + 16b² )
=> 3 [ a ( a - 4b ) - 4b ( a + 4b ) ]
=> 3 ( a - 4b ) ( a - 4b )
Hence, option C is correct.
Answer:
[tex]\huge\boxed{\tt{ 3 (a-4b)(a-4b)}}[/tex]
Step-by-step explanation:
[tex]\sf 3a^2-24ab+48b^2\\\\Taking \ 3 \ as \ common\\\\= 3 (a^2-8ab+16b^2)\\\\= 3 [(a)^2 - 2 (a)(4) + (4b)^2]\\\\Using \ Formula \ a^2 - 2ab + b^2 = (a-b)^2\\\\= 3 (a-4b)^2\\\\= 3 (a-4b)(a-4b)\\\\\rule[225]{225}{2}[/tex]
Hope this helped!
~AH1807