n & n - 1 are two consecutive numbers which means one of is surely even and the other one is odd.
_______________________________
Suppose that n is an even number;
So we can right n like this :
n = 2t
Thus :
n - 1 = 2t - 1
_______________________________
n( n - 1 ) = 2t( 2t - 1 ) = 2 ( 2t^2 - t )
= 2 ( q ) = 2q
The number obtained is a multiple of 2, so it is definitely even because all numbers are even multiples of 2.
What is another way to write this??
Answer:
b is the answer
....................
Answer:
B.
Step-by-step explanation:
The negative (-) must be within the parentheses “(..)”. The expression is repeated four times, thus (-2/3)^4
Multiply as a decimal point
0.6 x 0.4 =
Answer:2.4
Step-by-step explanation:
3. Choose a word from below to match the definition. Inability to pay back money owed is called
Budget
O Expense
O Debt
O Income
O Bankruptcy
A sphere has a volume of 972π cm3. What is its radius in centimeters
Answer:
radius = 6.15
Step-by-step explanation:
cuz ik can u mark me brainliest?
Please help me I really need this
Answer:
y-intercept = 2 so it’s the first answer option
Step-by-step explanation: How to find the slope. Slope is rise/run so choose one point on the graph, and figure out how many squares it goes up and how many over, that’s your slope. Then, to find the y-intercept, find the point where it intersects on the y-axis, in this case it looks like 2.
Find the length of the missing leg.
Answer:
Step-by-step explanation:
using formula
a^2+b^2=c^2
x^2+4^2=8^2
x^2+16=64
x^2=64-16
x=[tex]\sqrt{48}[/tex] cm
Answer:
x = [tex]\sqrt{48}[/tex]
Step-by-step explanation:
Using Pythagoras' identity in the right triangle
x² + 4² = 8²
x² + 16 = 64 ( subtract 16 from both sides )
x² = 48 ( take the square root of both sides )
x = [tex]\sqrt{48}[/tex]
Find y.
Write your answer in simplest radical form.
Answer:
y = 6
Step-by-step explanation:
in a 45-45-90 triangle, the hypotenuse is [tex]\sqrt{2}[/tex] multiplied by the side across from the 45° angle
Please help me. Either answer the question or tell me in which quadrant do I need to start graphing, please.
Answer:
The rule for a reflection over the x-axis is (x,y)→(x,−y).
Step-by-step explanation:
Take the coordinates of each letter. For example J = (1,-1). Transform it based on the rule above. (1,-1) -> (1,1). Do this for each of the letters. If you want me to check over your answers once you're done, I can do that in the comment section below.
A bag contains 8 apples and 6 oranges. You randomly draw a piece of fruit from the bag, eat it, and then randomly draw another. What is the probability you draw and eat an apple then draw an orange
Answer:
probability of choosing apple first = 8/14
probability of choosing orange second = 6/13
probability of choosing apple and orange = 8/14 x 6/13 = 24/91
Step-by-step explanation:
Solve for x. (-6/5) x - 4 = -46
A: 23
B: 35
C: -23
D: -35
Answer:
you have flvs? am if u do is it geometry?
PLAEASE Help If you answer this right I will mark you brainlist
Answer:
Hello! answer: 65
Step-by-step explanation:
This is a supplementary angle meaning it will add up to 180 degrees therefore... 180 - 115 = 65 therefore x = 65 hope that helps!
Answer:
x=65°
Step-by-step explanation:
180°= x + 115°
x = 180 - 115
x = 65°
The triangle below is isosceles. Find the length of side x in simplest radical form with
a rational denominator.
х
6
Step-by-step explanation:
it's the square equal to the equivalent equation to equal 5 673y
(trigonometry) solve for x
Answer:
x= about 36.9
Step-by-step explanation:
We have 2 known factors, the degree of 31 and 19 for a side.
19 and x are opposite and hypotenuse of the angle of 31.
sin 31 = 19/x
We isolate and do
19/sin 31
KInda need to hurry first answer gets brainlist
Answer: d
Step-by-step explanation:
Answer:
I think the answer to your question is 3x-5y^2 i am not sure.
Step-by-step explanation:
I hope this helps, have a nice day
I don't understand how to prove it's tangent. Help quickly please.
Step-by-step explanation:
by using pythagorean theorem:
XW²+XY²=
(2×6.4)² + 9.6² =
12.8²+9.6²=
163.84 + 92.16= 256
WY²= 16²= 256
so, XW²+XY²=WY²
=> the WXY is a right triangle, and X is a right angle.
so XY is perpendicular to XW as the diameter of circle Z.
and XY is tangent to circle Z
CD is the Diameter. The measure of Arc CD is 11x Find the length of the radius in the circle.
Answer:
11
Step-by-step explanation:
Using S = rA, where S is arc length, r is radius and A is angle(in radians).
Comparing: S = 11π, A = 180° = π
=> 11π = rπ
=> 11 = r
Required radius is 11 unit
Method 2:
This is a semi circle, circumference of semi circle is πr, so
πr = 11π
r = 11
How do I find the volume?
Answer:
425 ft³
Step-by-step explanation
Find the volume of the entire figure, if the part wasn't cut out
It would be 11 x 8 x 5 = 440
Now do 5 x 1 x 3 = 15
440 - 15 = 425
If my answer is incorrect, pls correct me!
If you like my answer and explanation, mark me as brainliest!
-Chetan K
At the start of 2014 Mike's car was worth £12000.
The value of the car decreased by 30% every year.
Work out the value of his car at the start of 2017.
The value of the car at the start of 2017 will be £ 4116
SOMEONE PLEASE HELP ME! I promise i will mark brainlest, but i need the right answer for this. help is much appreciated <3
CCCCCCC
the best answer
Answer: the second one well because... i dont know how to explain it
what is 2/3 - 1/3 I appreciate all answers!! (btw i dont wanna do all the math right now so i know how to do it i am just not in the mood of doing it rn.)
Answer:
1/3
Step-by-step explanation:
2/3-1/3=1/3
#Carry on Learning
[tex]0.333[/tex] ✅
Step-by-step explanation:
[tex] \frac{2}{3} - \frac{1}{3} \\ = \frac{2 - 1}{3} \\ = \frac{1}{3} \\ = 0.333[/tex]
[tex]\large\mathfrak{{\pmb{\underline{\orange{Happy\:learning}}{\orange{.}}}}}[/tex]
Triangle ABC with vertices A(4, −6), B(2, −8), and C(−10, 4) is dilated by a scale factor of 2 to obtain triangle A′B′C′. Which statement best describes triangle A′B′C′? (5 points) Group of answer choices
It is congruent to triangle ABC and has coordinates A′(8, −12), B′(4, −16), and C′(−20, 8).
It is congruent to triangle ABC and has coordinates A′(2, −3), B′(1, −4), and C′(−5, 2).
It is similar to triangle ABC and has coordinates A′(8, −12), B′(4, −16), and C′(−20, 8).
It is similar to triangle ABC and has coordinates A′(2, −3), B′(1, −4), and C′(−5, 2).
Answer:
I believe it is A I may be wrong
It is similar to Triangle ABC and has coordinate A'(8, -12), B'(4, -16), and C' (-20, 8).
Since its getting dilated by 2 it will be getting bigger
The sides of a triangle are 2x+4, 5x+2, and 4x-3. What is the perimeter if x=2
Answer:
25
Step-by-step explanation:
The three sides of a triangle are 2x+4, 5x+2, and 4x-3.
The sum is the perimeter
P = 2x+4+ 5x+2+ 4x-3
Combine like terms
P = 11x +3
Let x =2
P = 11*2 +3
P = 22+3
P =25
Answer:
25
Step-by-step explanation:
Side 1: 2x+4 Side 2: 5x+2 Side 3: 4x-3
Substitute-
2(2)+4 5(2)+2 4(2)-3
Multiply-
4+4 10+2 8-3
Combine Terms-
16 + 12 + 5
=25
At Simba Travel Agency, the price of a climbing trip to Mount Kilimanjaro includes an initial fee plus a constant fee per meter. FFF represents the fee (in dollars) for climbing ddd meters. F=110+0.12dF=110+0.12dF, equals, 110, plus, 0, point, 12, d What is the increase in price for every 100100100 meters climbed?
Answer:
122fee/meter
Step-by-step explanation:
Given the expression for the initial fee plus a constant fee per meter expressed as;
F = 110 + 0.12d
Is d = 100m
Substiutte into the expression and get F
F = 110 + 0.12(100)
F = 110 + 12
F = 122
Hence the required increase in price is 122fee/meter
Answer:
110
Step-by-step explanation:
can you please help !
you roll a six sided dice 60 times the number for which the experimental probability of rolling the number is the same as the theoretical probability is
Answer:
The answer is "12 times, a die was rolled. Identify the complete possibilities to roll exactly 6".
Step-by-step explanation:
Using formula:
[tex]P(X=K)=\binom{N}{K} P^{K} a^{N-K}[/tex]
So the value is [tex]P(X=6)[/tex]
using the 45o −45o −90o Triangle theorem.
Solve this triangle.
Which of the following is most likely the next step in the series?
Look at the photo
PLEASE PLEASE HELP ME ASAP
Answer:
378
Step-by-step explanation:
540 of 70%. So you will write this as 70 / 100 x 540 = 378. I hope this helped you.! <3
Options
26%
40%
90%
50%
Answer:
not so sure but i guess its 50%... i am so sorry if it is wrong..if it is wrong dont forget to tell me the right answer(:
Rajiv brought 1325 packs of red balls 1238 packs of yellow balls and 1334 packs of green balls there were 6 balls in each pack how many balls did rajiv buy .Change the numbers to very simple numbers in UPSL method
Answer:
Rajiv bought 23,382 balls.
Step-by-step explanation:
Given that Rajiv bought 1325 packs of red balls, 1238 packs of yellow balls and 1334 packs of green balls, and there were 6 balls in each pack, to determine how many balls did Rajiv buy the following calculation must be performed:
(1,325 + 1,238 + 1,334) x 6 = X
3.897 x 6 = X
23.382 = X
Therefore, Rajiv bought 23,382 balls.