Answer:
(5,2)
Step-by-step explanation:
The 90° clockwise rule (for around the origin) is: [tex](x,y)\rightarrow(y,-x)[/tex]
Apply the rule to point A:
[tex]\left \{ {(-2,5)\rightarrow(5,2)} \atop {(x,y)\rightarrow(y,-x)}} \right.[/tex]
A' should be (5,2).
Answer:
Step-by-step explanation:
The general rule for rotation of an object 90 degrees is (x, y) to (-y, x)
so for point A(-2,5), A' will be (5,2)
to find the new
X=xcos(θ)+ysin(θ)
X=-2(cos90)+5sin90 ( cos90=0, sin 90=1)
X=5to find the new
Y=−xsin(θ)+ycos(θ)
Y=-(-2)sin90+5cos90
Y=2round 2.034 to the nearest whole number
Answer:
2
Step-by-step explanation:
2.034
We are rounding to the ones place.
To round, look at the digit to the right of which we are rounding. In this case, it is 0.
0 is less than 5, so we just keep the 2.
I hope this helps!
pls ❤ and mark brainliest pls!
Answer:
2
Step-by-step explanation:
2.034 can be rounded to 2.000, or 2. This is because the digit after the two in the tenths place, 0, is less than 5.
Brainliest, please!
Find the length of the third side. If necessary, round to the nearest tenth.
15
20
Submit Answer
Answer:
attempt 1 out of 2
Ms.Kayla theatre group is having a play. On Thursday the ticket sale is 287, Friday ticket sale was 618, Saturday ticket sale was 973, and on Sunday the ticket sale was 532. Which two-day ticket sales can be combined to equal more than the tickets sold on Saturday. Please show your work I will mark you brainiest and show your work, please
Answer:
Friday & Sunday
Step-by-step explanation:
Thursday: 287
Friday: 618
Saturday: 973
Sunday: 532
973 < 287 + 618 = 973 < 905
We now know this isn't true.
973 < 287 + 532 = 973 < 819
This isn't true either.
973 < 532 + 618 = 973 < 1150
This is true. The two days with the time are Friday and Sunday.
I really hope this helps you! Tell me if it's right or not! :D
x²+x=0
x³-25x=0
x²=4x
4x²-4x=1
Answer:
x²+ x = 0
x ( x +1 ) = 0
x = -1
x³-25x=0
x ( x² - 25 ) = 0
x² = 25
x = 5
x²=4x
x² - 4x = 0
x ( x- 4 ) = 0
x = 4
4x²-4x=1
4x²-4x - 1 = 0
4 x² - 2x - 2x - 1 = 0
2x ( 2x - 1 ) - 1 ( 2x- 1 ) = 0
2x- 1 ) ² = 0
2x = 1
x = 1/ 2
mark me as brainliest
write as a sentence in words 7.8 > 3.4
Answer:
seven and eight tenths is greater than three and four tenths
Hope it helped youWhich of the following graphed systems has no solution?
A. none of these
Last one or third one .
Note down:-
If two lines have intersected each other then the intersection point is the solution.The equations have only If both lines are one and equal then the equations have infinite solutions.If two lines are parallel then the equations have no solutions .If the lines are parallel that means an equal slope but different y-intercepts, then the system has no solution. 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 system solutions are as follows:
If the slope of the lines is different, then the system has a unique solution.If the slope of the lines is the same but the y-intercepts are different, then the system has no solution.If the slope and y-intercepts of the lines are the same, then the system has infinitely many solutions.If the lines are parallel that means an equal slope but different y-intercepts, then the system has no solution. Then the correct option is D.
More about the linear equation link is given below.
https://brainly.com/question/11897796
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In a large restaurant, an average of 3 out of every 5 customers ask for water with their meal. A random sample of 10 customers is selected. Find the probability that exactly 6 ask for water with their meal. Let X be the random variable that represents the number of these customers who ask for water.
Answer:
please mark me brainlist
Step-by-step explanation:
a) Let X be the random variable the number of customers asking for water.
X ~B(10,0.6)
= P(X = 6) =( 0.6)6 ( 0.4)4 10!/6 !*4!
= 0.2508
Y ~B(10,0.4)
= P(Y = 4)=( 0.6)6 ( 0.4)4 10!/6 !*4!
= 0.2508
The probability that exactly 6 ask for water with their meal is calculated by binomial distribution and the value is P ( x = 6 ) = 25.08 %
What is a Binomial Distribution?
The binomial distribution is a type of probability distribution that predicts the likelihood of obtaining one of two outcomes given a set of inputs. It summarizes the number of tries where each trial has the equal chance of producing the same result.
The formula for Binomial Distribution is given by
P ( x ) = [ n! / ( n - x )! x! ] pˣqⁿ⁻ˣ
where
n = number of trials
x = number of successes
p = probability of getting a success in one trial
q = probability of getting a failure in one trial
q = 1 - p
Given data ,
Let the probability that exactly 6 ask for water with their meal be P ( x = 6 )
Now , an average of 3 out of every 5 customers ask for water with their meal
So , the probability of getting a success p = 3/5 = 0.6
The probability of getting a failure q = 1 - p = 0.4
The number of trials = 10
The number of successes x = 6
So ,
Probability that exactly 6 ask for water with their meal be P ( x = 6 ) is
P ( x ) = [ n! / ( n - x )! x! ] pˣqⁿ⁻ˣ
Substituting the values in the equation , we get
P ( x = 6 ) = [ 10! / ( 4 )! 6! ] ( 0.6 )⁶( 0.4 )⁴
On simplifying the equation , we get
P ( x = 6 ) = 0.2508
P ( x = 6 ) = 25.08 %
Therefore, the value of P ( x = 6 ) is 25.08 %
Hence , probability that exactly 6 asks for water is 25.08 %
To learn more about binomial distribution click :
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Factorise each expression 8 - 2v²
Answer:
hello thereee
8 - 2v^2 we are suppose to facotrize...
2 ( 4 - v^2 )
2 ( 2^2 - v^2 )
apply identity a^2 - b^2
2 ( 2 + v ) ( 2- v )
done dana done.....
if the Diameter of a cicle is 28cm calculate the perimeter
Answer:
Simple. 28pi
// pi is [tex]\pi[/tex].
Which is 88.0 by rounding tenth
Step-by-step explanation:
Please pick me brainliest.
Hope it helps!
Answer:
88 cm
Step-by-step explanation:
Perimeter = πd
= (22/7)× 28
= 88 cm
graph the line that passes through the points (-3,-7) and (-2,-7) and determine the equation of the line
Answer:
y = -7
Step-by-step explanation:
y2 - y1 / x2 - x1
-7 - (-7) / -2 - (-3)
0/1
= 0
y = 0x + b
-7 = 0(-2) + b
-7 = 0 + b
-7 = b
The hypotenuse is 8 inches. The side opposite angle X is 7 inches. Angle X = ?
Step-by-step explanation:
In the picture.
The answer is X = 61°
Part
This table shows the prices of the three TVs in addition to their length and width. Is the price of a TV proportional to the length of its screen? How
do you know
Answer:
No! They are not proportional!
Step-by-step explanation:
Proportional prices to the length means that
(price 1/length 1)=(price 2/length 2)=(price 3/length 3)
Even by plugging in the numbers yourself to double check my numbers, and getting and answer for each ratio, it is clear that they are not proportional.
Answer:
The ratio of screen length to price in the first row is 16/160, which simplifies to 1/10.
The ratio of screen length to price in the second row is 20/180, which simplifies to 1/9.
The ratio of screen length to price in the third row is 24/200, which simplifies to 3/25.
Because 16/160 doesn't = 20/180 doesn't = 24/200, the ratios are not equivalent. This is not a proportional relationship.
2x²+3x²+3.(-1) =5x.x+5x .1
[tex]\\ \sf\longmapsto 2x^2+3x^2+3(-1)=5x.x+5x.1[/tex]
[tex]\\ \sf\longmapsto 5x^2-3=5x^2+5x[/tex]
[tex]\\ \sf\longmapsto 5x^2-5x^2-3=5x[/tex]
[tex]\\ \sf\longmapsto 5x=-3[/tex]
[tex]\\ \sf\longmapsto x=\dfrac{-3}{5}[/tex]
Write the coefficient of x2 in the following a) 2 + x2 + x b) 2 – 4x2 + x solution pls I will mark as brainliest
Answer:
The coefficient of x²
a) 1
b) -4
the coefficient of x² is the number in front of the x²(variable).
Coefficient= Constanta
I hope this helps
if u have question let me know in comments ^_^
Answer:
a) 1.
b) -4.
Step-by-step explanation:
The coefficient is the number multiplying x2. If it is 1 it is usually omitted.
Factor this polynomial expression.
x2 + 12x + 36
A. (x + 9)(x + 4)
B. (x - 6)(x - 6)
C. (x + 6)(x + 6)
D. (x - 9)(x - 4)
Answer:
(x+6)(x+6)
Step-by-step explanation:
x^2 + 12x + 36
Factor
What two numbers multiply to 36 and add to 12
6*6 = 36
6+6 =12
(x+6)(x+6)
Will Give Brainliest, answer ASAP
Answer:
As property of a rectangle:
1. AC = 13
AC = 2 x EC (E is midpoint of AC and BD)
13 = 2 x (3x - 11)
13 = 6x - 22
35 = 6x
x = 35/6 m
2. DB = AC = 13 m( two diagonals are equal)
3. BAE = ABE = 40 degree
4. BDA = 90 - ABE = 90 - 40 = 50 (triangle ABD is a right triangle at A)
5. BC = AD = 5m (two opposite sides are equal)
6. AB = sqrt(BD^2 - AD^2) = sqrt(13^2 - 5^2) = sqrt(144) = 12 m
Perimeter = 2 x (AD + AB) = 2 x (5 + 12) = 2 x 17 = 34 m
7. Area= AD x AB = 5 x 12 = 60 m2
125 Children get one pen, there are 8
pens in a pack. How many pens are
needed?
Answer:
16 packs
Step-by-step explanation:
Take the number of children and divide by the number of pens in a pack
125/8
15.625
We need to round up to get the number of packs
16 packs
Answer:
125 pens and 16 packs.
Step-by-step explanation:
Given:
Each child gets 1 pen.There are 125 children.Each pack has 8 pens.Each child gets 1 pen, so there needs to be 125 pens.
Since there are 8 pens in a pack, there will need to be:
125 / 8 = 15.62
Estimate:
16 packs
There needs to be 16 packs for the 125 children.
3a + 7 b = 2
2a + 9 b = 15
solve this linear equations using elimination method
please show your working ✨✨ THANK YOU
Answer:
a = -87/13
b = 41/13
Step-by-step explanation:
3a + 7b = 2
2a + 9b = 15
You need to have one of the coefficients have the same number but the opposite sign in both equations. Multiply the first equation by -2 and the second equation by 3. You will then be able to cancel out a and solve for b.
-2(3a + 7b) = -2(2)
-6a - 14b = -4
3(2a + 9b) = 3(15)
6a + 27b = 45
-6a - 14b = -4
6a + 27b = 45
0a + 13b = 41
13b = 41
b = 41/13
Plug in the b-value into one of the given equations and solve for a.
3a + 7b = 2
3a + 7(41/13) = 2
3a + 287/13 = 2
3a = -261/13
a = -87/13
Solve the system using substitution.
X = Y-4
2x + 3y = 12
Answer:
Step-by-step explanation:
If you know that x = y - 4, you can plug that value into the equation 2x + 3y = 12 for x. This would look like:
2(y - 4) + 3y = 12
Simplify:
2y - 8 + 3y = 12
5y - 8 = 12
add 8 to both sides
5y = 20
divide both sides by 5
y = 4
Now, substitute y = 4 back into the equation x = y - 4:
x = 4 - 4
and simplify:
x = 0
This means that the answer is x = 0 and y = 4.
Answer:
(0, 4 )
Step-by-step explanation:
Given the 2 equations
x = y - 4 → (1)
2x + 3y = 12 → (2)
Substitute x = y - 4 into (2)
2(y - 4) + 3y = 12 ← distribute and simplify left side
2y - 8 + 3y = 12
5y - 8 = 12 ( add 8 to both sides )
5y = 20 ( divide both sides by 5 )
y = 4
Substitute y = 4 into (1) for corresponding value of x
x = 4 - 4 = 0
solution is (0, 4 )
10. Write a word problem for this equation:
n ($25) = $125
Answer:
The word problem is "How many $25 are there in $125?"
Step-by-step explanation:
Given
[tex]n(\$25) = \$125[/tex]
Required
Write a word problem for the expression
We start by solving the given equation
[tex]n(\$25) = \$125[/tex]
Divide both sides by $25
[tex]\frac{n(\$25)}{\$25} = \frac{\$125}{\$25}[/tex]
[tex]n = \frac{\$125}{\$25}[/tex]
[tex]n = 5[/tex]
This implies that there are 5, $25 in $125
Hence; The word problem is "How many $25 are there in $125?"
A farm yard contains some pigs and some chickens. Altogether there are 60 heads and 200 legs. How many pigs are there in the yard?
40 pigs.
Step-by-step explanation:p=pigs c=chickens.
4p=pigs have 4 legs.
2c=chickens have 2 legs.
4p+2c=200
p+c=60
Do the elimination method:4p+2c=200
(-4)p+c=60
4p+2c=200
-4p-4c=-240
-2c=-40
c=20
p+20=60
p=60-20
p=40
Hope this helps!
BRAINLIEST would help me a lot:)
Which inequality is represented by this graph?
OA. y<-1/5x+1
OB. y>= -1/5x+1
OC. y<= -1/5x+
OD. y>-1/5x+1
Answer:
Option A is correct
Step-by-step explanation:
Hope it is helpful....
in scientific notation
1.6 x 10^3/ 8 x 10^7
Answer:
Step-by-step explanation:
[tex]\frac{1.6*10^{3}}{8*10^{7}}=\frac{1.6}{8}*10^{3-7}\\\\\\=0.2*10^{-4}\\\\\\=2.0*10^{-5}[/tex]
[tex]\frac{a^{m}}{a^{n}}=a^{m-n}[/tex]
would you Rather geometry
Walk on a line or A line segment
why?
How do you simplify the following problem?: 9−4d≥−3
Answer:
d ≤3
Step-by-step explanation:
9−4d≥−3
Subtract 9 from each side
9-9−4d≥−3-9
−4d≥−12
Divide by -4, remembering to flip the inequality
-4d/-4 ≤ -12/-4
d ≤3
Rearrange the formulae to make x the subject:
ay/x - dx= wx
Thanks in advance
Answer:
x = ay/(wx+dx)
Step-by-step explanation:
ay/x - dx = wx
ay/x = wx + dx
ay = x(wx+dx)
x = ay/(wx+dx)
Determine the slope of a line passing through
(-2, 4) and (-9, 3).
Answer:
1/7
Step-by-step explanation:
We can us the slope formula to find the slope
m = ( y2-y1)/(x2-x1)
= ( 3-4)/(-9- -2)
= (3-4)/(-9+2)
= -1 /-7
=1/7
answer of a ²-10a+16-6b-b^2
[tex] \quad a^2-10a+16-6b-b^2[/tex]
$=(a^2-10a)-(b^2+6b) +16$
$=[(a^2-2(5)a+25)-25]-[(b^2+2(3)b+9)-9]+16$
$=(a-5)^2-25-(b+3)^2+9+16$
$=(a-5)^2-(b+3)^2$
The solution of this equation has an error. Which of the following steps has an error?
Step 1: -2x + 8 - 3x = 7
Step2:–5x+8=7
Step3:-5x = 15
Step4:
x = -3
O Step 2
O Step 1
O Step 3
3rd step
Solution:-
[tex]\\ \sf\longmapsto -2x+8-3x=7[/tex]
[tex]\\ \sf\longmapsto -2x-3x+8=7[/tex]
[tex]\\ \sf\longmapsto -5x+8=7[/tex]
[tex]\\ \sf\longmapsto -5x=7-8[/tex]
[tex]\\ \sf\longmapsto -5x=-1[/tex]
[tex]\\ \sf\longmapsto x=\dfrac{-1}{-5}[/tex]
[tex]\\ \sf\longmapsto x=\dfrac{1}{5}[/tex]
What is the area of triangle BCD to the nearest tenth of a square centimeter? Use special right triangles to
help find the height. Show your work.
Answer:
21.7 cm²
Step-by-step explanation:
Given:
Right ∆BCD,
<D = 60°
adjacent length = 5 cm
Required:
Area of ∆BCD
SOLUTION:
Step 1: find the height (opposite side length) of ∆BCD
[tex] tan(D) = \frac{opp}{adj} [/tex]
[tex] tan(60) = \frac{h}{5} [/tex]
Multiply both sides by 5
[tex] tan(60)*5 = \frac{h}{5}*5 [/tex]
[tex] tan(60)*5 = 8.7 cm [/tex] (approximated)
Step 2: find the area of ∆BCD
Area = ½*base*height
Area = ½*5*8.7 = 21.7 cm² (nearest tenth)