Answer:
Step-by-step explanation:
Expanding double brackets is easy. Let me give u an example :
(x+5)(x+1)
so the way i do it is
1.Write the second bracket (x+1) twice :
(x+1) (x+1)
2. split the first bracket (x+5) like this :
x(x+1) +5(x+1)
3. Simplify
x*x = x²
x*1 = 1x
5*x = 5x
5*1 = 5
x² + 1x + 5x + 5 = x² + 6x + 5
so the final answer is gonna be x² + 6x + 5
in order to factorize it, u basically do the following :
1. Find two numbers, that multiply to give the last number (a.k.a 5 ) and add to give the middle number (a.k.a 6) The middle number is the sum, and the last number is the product.
so u write all the combo's that make the number 5 :
1 x 5
The two number's are gonna be 1 & 5, because 1 + 5 = 6 (the sum) and 1 x 5 = 5 (the product)
This example is easy since it doesn't include any negative numbers, so u just do = (x+1) (x+5) or (x+5) (x+1) same thing ;-;
I think u should just ask a teacher or watch a tutorial or smthn, this is like the worst explanation ever. But yeah once u know the method, you'll find expanding double brackets rly easy.
-4x+50<58−8x+44≥60 AND−4x+50<58
Solve for x
Answeridek
Step-by-step explanation:
NEED GENIUS HELP!!!
Select the function that's represented in the graph.
Question options:
A)
ƒ(x) = –(x + 2)² – 3
B)
ƒ(x) = (x + 2)² – 3
C)
ƒ(x) = –(x – 2)² – 3
D)
ƒ(x) = (x – 2)² – 3
Answer: A
Step-by-step explanation:
If you look at option A and ignore the -(x+2)^2, it would say f(x) = -3.
So the vertex has y-coordinate -3.
Because the coefficient of -(x+2)^2 is negative, the graph opens downward.
Because it says -(x+2)^2 instead of -(x-2)^2, it will be on the left side of the graph.
The graph meets all of these conditions.
The graph described in option B opens upwards.
The graph described in option C opens upwards and the vertex is in the fourth quadrant.
The graph described in option D opens downwards, but the vertex is in the fourth quadrant.
I need halp with this-
Z=9
Answer:
81 + 81 + 10 aka 172
Step-by-step explanation:
Answer:
172
Step-by-step explanation:
z = 9
9 to the second power is 81
9 times 9 is 81
plus 10
= 172
hope this helps dude
PLEASE HELP ASAP!! will mark brainliest!!
What is the equation of the line shown in this graph?
Step-by-step explanation:
The line is a horizontal line of the form y = a, where a is a real constant.
Since the line passes through the points (-4, 1) and (2, 1) with y-values of 1,
Equation of the line: y = 1.
HURRY!!!!!!!!! THIS QUESTION IS 50PTS.
Option 1: $10.00 every day
Option 2: $3.00 on the first day, $3.50 on the second, $4.00 on the third, and so on, increasing by $0.50 per day
Option 3: $0.01 on the first day, $0.02 on the second, $0.04 on the third, and so on, doubling each day.
For option 1,2 and 3 Write a formula to find how much you would make on any day.
Here is a list of numbers:
-11, -5, 16, -19, 2, 10, 0, -11, -1
State the median.
Answer:
-1
Step-by-step explanation:
First, order the list of number from least to greatest:
-19 , -11 , -11 , - 5 , -1 , 0 , 2 , 10 , 16
Next, note the definition of a median. The median number is the number in the middle of a given set of numbers. In this case, it is -1.
-1 is your median.
~
Compare using >,=, or <.
a. 3_ -3
C. -12_ -24
b. 12_24
d. 5__-(-5)
Answer:
a. 3 > -3
C. -12 > -24
b. 12< 24
d. 5 = -(-5)
Step-by-step explanation:
Please help and show workings
Given:
In triangle ABC, Q is the centroid and FQ=9.
To find:
The length of FC and QC.
Solution:
We know that, centroid is the intersection point of medians of a triangle and medians divide teach other in 2:1. So, centroid divided each median in 2:1.
CF is a median and Q is the centroid. So,
[tex]QC:FQ=2:1[/tex]
Let the length of QC and FQ are 2x and x respectively.
We have, FQ=9.
[tex]x=9[/tex]
Now,
[tex]QC=2x[/tex]
[tex]QC=2(9)[/tex]
[tex]QC=18[/tex]
And,
[tex]FC=FQ+QC[/tex]
[tex]FC=9+18[/tex]
[tex]FC=27[/tex]
Therefore, the length of FC is 27 units and length of QC is 18 units.
PLEASE HELP ME I WILL MARK BRAINLIEST
Answer:
[tex]a_n = 1 + 5(n-1)[/tex]
$36
Step-by-step explanation:
I think the part that is confusing you is how to read the math syntax.
The part that says "[tex]a_n=1, if\ n=1[/tex]" just means that a=1 is your starting number. The n=1 is the first iteration.
The part that says "[tex]a_{n}=a_{n-1}+5\ , if\ n>1[/tex]" just means that you add 5 to the previous number every iteration.
They want you to find the number at 8th iteration, n=8. So lets work it out.
n=1: a= 1
n=2: a= 1+5 = 6
n=3: a= 6+5 = 11
n=4: a= 11+5 = 16
n=5: a= 16+5 = 21
n=6: a= 21+5 = 26
n=7: a=26+5 = 31
n=8: a= 31+5 = 36
Or you can use the shortcut:
You're always adding by 5 each time and starting with 1, so:
[tex]a_n = 1 + 5(n-1)[/tex]
where n=8 for the 8th round.
[tex]a_n = 1 + 5(8-1) = 36[/tex]
estimate 5/11 + 5/16 . use the benchmarks 0,1/2 and 1
a. 1/2
b. 1 1/2
c. 2
d. 1
pls help
Answer:
D
Step-by-step explanation:
5/11 and 5/16 = 80/176 + 55/176 which equals 135/176 which simplifies into 0.76 which is closest to 1
the slope of a line is -4/5 what is the rise if the run is 20?
Answer:
rise= -16
Step-by-step explanation:
Please see the attached picture for the full solution.
A paintball court charges an initial entrance fee plus a fixed price per ball. PPP represents the total price (in dollars) as a function of the number of balls used nn. P=0.80n+5.50P=0.80n+5.50P, equals, 0, point, 80, n, plus, 5, point, 50 What is the price for 101010 balls, not including the entrance fee?
Question:
A paintball court charges an initial entrance fee plus a fixed price per ball. P represents the total price (in dollars) as a function of the number of balls used n.
P=0.80n+5.50
What is the price for 10 balls, not including the entrance fee?
Answer:
$8
Step-by-step explanation:
We are given the function:
P=0.80n+5.50
Where n represents the number of balls. From this function, the entrance fee = 5.50
We are asked to calculate the price for 10 balls without the entrance fee. This is given as:
0.80n = 0.80 × 10 balls
= $8
The price for 10 balls, not including the entrance fee is $8
Answer:
The answer is 8
Step-by-step explanation:
help please i will mark brainliest if correct
Which BEST describes the behavior of the graph 2x+y=4
A:The graph is falling as x increases.
B:The graph is a vertical line.
C:The graph is rising as x increases.
D:The graph is a horizontal line.
Answer:
b
Step-by-step explanation:
sbshwbwusaajasadaaa
Solve for b. ab+c=d. 1.b=a+c/d 2.b=a/(c-d) 3.b=(d-c)/a
Answer:3
Step-by-step explanation:
Help!!!!!!!!!!!!!!!!!!!!
Answer:
Step-by-step explanation:
It would be D I think...
simplify the expression
Answer:
24/64..........................
Step-by-step explanation:
hope this helped
Question 4 (1 point)
One way to convert from inches to centimeters is to multiply the number of inches by
2.54. How many centimeters are there in inch?
10.16 cm
1/635 cm
0.635 cm
1/10.16 cm
Answer:
Step-by-step explanation:
Inches to CM Conversion
1 Inch (in) is equal to 2.54 cm. To convert inches to cm, multiply the inch value by 2.54. For example, to find out how many cm is 12 inches, multiply 12 by 2.54, that makes 30.48 cm is 12 in.
when 832 is divided by n, the result is 16
What is the percent change from 6,000 to 9,000
Answer: 50% would be the correct answer.
Find the value of r in the triangle shown below.
6
2
X=40 with the little house thingy
In △ABC, m∠A=23°, a=10, and b=13. Find c to the nearest tenth.
9514 1404 393
Answer:
c ∈ {3.4, 20.6}
Step-by-step explanation:
The law of cosines can be used to write a quadratic equation in c.
a^2 = b^2 + c^2 -2bc·cos(A)
10^2 = 13^2 + c^2 -2(13)c ·cos(23°)
c^2 -23.933c +69 = 0 . . . . . subtract 100 to put into standard form.
c = (-(-23.933) ±√((-23.933)^2 -4(1)(69)))/(2(1))
c ≈ 11.967 ± √74.199
c ≈ {3.4, 20.6}
_____
Additional comment
The given angle is opposite the shorter of the two given sides, so we expect two solutions. We could use the law of sines, but this works just as well and gives the two solutions directly, without having to find angle B.
Please show the work
Answer:
C
Step-by-step explanation:
Here's a trick:
Find the last number of the equation and look at your factors to see which numbers you can multiply to get that answer
in this case the last number of x^3-8x^2+17x-10 is -10
*IF IT HAS A NEGATIVE, ALWAYS REMEMBER TO INCLUDE IT*
Then look at the options and see what numbers can get you -10 but include the factor that they give you.
in this case C has the numbers as -1×-5×-2 gives you -10
now to check by using the box method, which is much easier to do, and put pick 2 of those factors and check if it's right
30 POINTSSS HELPPP
A yellow marble, a green marble, a red marble, a blue marble and a brown marble are dropped into an empty jar in the order given. The process is repeated until there are 88 marbles in the jar. How many of the marbles are red?
A 15
B 16
C 17
D 18
E 20
Answer:
18
Step-by-step explanation:
Because 85 divided by 5 is 17 add 1 for the missing 3 boom 18.
Answer:
D) 18 marbles will be red
Step-by-step explanation:
We know that the order is Yellow, green, red, blue, brown due to it saying “in the order given”
We can say that every time 1 of each marble of these colors are dropped in we can make that a set and since and we know there are 5 marbles a set.
Now we know there are 88 marbles so we divide
88/5= 17 Remainder: 3
Now 17 sets so we know there are at least 17 of each marble In the jar
Now the remainder of 3
Following the order
1 would go into yello, 1 to green, and the last one to red
So thats an extra plus 1
Now we have
Yellow: 17+1=18
Green: 17+1=18
Red: 17+1=18
Blue: 17
Brown: 17
So there are 18 red marbles
CHECK:
We add all the final results and see if we get 88
18*3 (becuase there are 3, 18s)
18*3+17*2 (same for 17s, ther are 2 17s)
18*3=54
17*2=34
54+34=88
So its true
What is the value of x?
A right angle is shown divided into two parts. The measure of one part of the right angle is 30 degrees. The measure of the other part is 4x.
15
30
45
60
Answer:
x = 15
Step-by-step explanation:
We are told that a right angle is divided into two parts
A right angle = 90°
Part A = 30°
Part B = 4x
Hence:
30° + 4x = 90°
Collect like terms
4x = 90° - 30°
4x = 60°
4x = 60/4
x = 15
Therefore, the value of x = 15
Answer:
ITS 15!!!!!! :))))
Solve for X
I was given two different answers last time I posted this on my other account. And please give an explanation on how you gained your answer.
Answer:
I'm not sure maybe you can ask a teacher is the community cant help
[tex]y = |x + 2| [/tex]
What is thw Domain and the Range
The domain is the x value and the range is the y value.
Because x is a variable it can be any real number so the domain would be negative infinity to infinity.
Because the domain is negative infinity to infinity, then the range is also negative infinity to infinity.
Raj plotted point L in the coordinate plane below.
On a coordinate plane, point L is 1.5 units to the left and 4 units up.
He says that the plotted point is (4, negative 1.5). What is Raj’s error?
The x-coordinate should be -4.
The y-coordinate should be 1.5.
The x- and y-coordinates are switched.
Both coordinates should be positive.
Answer:
The x- and y-coordinates are switched
Step-by-step explanation:
Here, we want to identify the error in the plot
1.5 units to the left, that is negative x-axis (-1.5)
4 units up is 4
So the coordinate point is (-1.5,4)
So the error on what he gave was that both coordinates were switched
Answer:
c
Step-by-step explanation:
OMG HELPPPPPP!!!!!!!!
OK PLEASE HELP ME. IVE BEEN TRYING TO REMEMBER HOW TO SOLVE THIS BUT IM FIND IT IT REALLY DIFFICULT
Quadrilateral JKLM has vertices J(–7, –2), K(–2, –2), L(–3, –4), and M(–6, –4). Find the midpoints of each of the sides JM and KL.
Step-by-step explanation:
X-value of Midpoint of J(-7, -2) and M(-6, -4)
= [(-7) + (-6)] / 2 = -6.5.
Y-value of Midpoint of J(-7, -2) and M(-6, -4)
= [(-2) + (-4)] / 2 = -3.
X-value of Midpoint of K(-2, -2) and L(-3, -4)
= [(-2) + -3)] / 2 = -2.5.
Y-value of Midpoint of K(-2, -2) and L(-3, -4)
= [(-2) + (-4)] / 2 = -3.
We have (-6.5, -3) and (-2.5, 3).
The correct answer is Option D.