Answers
Answer: ∠ECB = 60°
Step-by-step explanation:
First, find the value of x by adding them up.
x + 3x + 2x = 6x
Since we know that all of the angles create a 180° angle, we can set up a proportion.
6x = 180°
To find the value of x, divide both sides by 6.
6x ÷ 6 = x
180 ÷ 6 = 30
So now the proportion is x = 30.
Now that we now x = 30, we can plug in 30 to the angle measures.
∠DCA = 30°
∠DCE = 90°
∠ECB = 60°
So angle ECB is 60°.
hope this helps!
Related Questions
The box plot below represents some data set. What percentage of the data values are between 50 and 75?
Answers
Answer:
25
Step-by-step explanation:
For box plot, the box contains 50percent and the line is the 50percent for the whole plot
25% of the data values are between 50 and 75.
Important information:
A box plot that represents some data set.We need to find, what percentage of the data values are between 50 and 75.
Box plot:From the given box plot it is clear that 50 is the median and 75 is the third quartile.
We know that 25% of data values are between the median and the third quartile.
Thus, 25% of the data values are between 50 and 75.
Find out more about 'box plot' here:
https://brainly.com/question/1523909
When you solve an equation and you end with a TRUE STATEMENT, the solution set will be:
Answers
Answer:
false
Step-by-step explanation:
Answer:
equal
Step-by-step explanation:
3(x+2)=3x+6
3x+6=3x+6
-3x -3x
6=6
6(1/4b+10) +4(9/10b+3)
Answers
Answer:
75.2
Step-by-step explanation:
6(1/4b+10) + 4(9/10b+3)
6/4b + 60 + 36/10b + 12
3/2b + 60 + 12/5b + 12
3/2b + 12/5b + 60 + 12
5b × 3 + 2b × 12/ 5b × 2b + 72
15b + 24b/10b + 72
39b/10b + 72
3.2 + 72 = 75.2
A line is parallel to the line y = 4x - 6 and passes through the point (-3, 7). What is the equation of the line?
O y = 4x - 5
O y = 4x - 3
O y = 4x + 7
O y = 4x + 19
Answers
Answer:
y = 4x + 19
Step-by-step explanation:
If you plug the points in, you would get 4x + 19.
Alexander was given a gift card for a coffee shop. Each morning, alexander uses the card to buy one cup of coffee. Each cup of coffee costs $1.50 and after buying 4 cups of coffee , the card had a $9 remaining balance. Write an equation for A in terms of x
Answers
Answer:
A = (cost per cup of coffee * number of cups) + balance
$15
Step-by-step explanation:
Given that :
Cost per cup of coffee = $1.50
Number of cups purchased = 4
Balance on card = $9
Let A = worth of gift card
A = (cost per cup of coffee * number of cups) + balance
A = (1.50 * 4) + 9
A = 6 + 9
A = $15
At an electronics store, a smart phone is on sale for 35% off the original price of $679. If you use the store credit card, you can receive an additional 15% off the sale price. What is the final price of the smart phone if you use the store credit car
Answers
Answer:
The final price of the smart phone if you use the store credit card is $339.5
Step-by-step explanation:
Given;
original price of the smart phone = $679
initial discount = 35%
additional discount if you use the store credit card = 15%
total discount of the smart phone if you use the store credit card
= 35% + 15% = 50%
The final price of the smart phone, if you use the store credit card is given as;
P = 0.5 X $679
P = $339.5
Therefore, the final price of the smart phone if you use the store credit card is $339.5
What table is proportional
Answers
Answer:
C
Step-by-step explanation:
x is 2 times as y is the pattern
In the diagram below,AB is the diameter of the circle with centre P.Point C lies on the y-axis.Given the coordinates of A and B are (-6,3) and (2,-3) respectively ,calculate
a)the coordinates of P
b)radius of the circle
c)the coordinates of C
d)the area of the circle in term of
[tex]\pi[/tex]
Answers
Answer:
The coordinates of P are (-2,0)
The radius of the circle is 5.
Step-by-step explanation:
Analytic geometry
The diagram shows a circle with center P, and two points A(-6,3) and B(2,-3) that form the diameter of the circle.
a)
The center of the circle lies at the midpoint of A and B. The midpoint (xm,ym) can be calculated by:
[tex]\displaystyle x_m=\frac{x_1+x_2}{2}[/tex]
[tex]\displaystyle y_m=\frac{y_1+y_2}{2}[/tex]
Substituting x1=-6, x2=2, y1=3, y2=-3:
[tex]\displaystyle x_m=\frac{-6+2}{2}=\frac{-4}{2}=-2[/tex]
[tex]\displaystyle y_m=\frac{3-3}{2}=0[/tex]
Thus, the coordinates of P are (-2,0)
b) The radius of the circle is the distance from the center to any point in its circumference. We can use the distance from P to A or B indistinctly.
Given two points A(x1,y1) and P(x2,y2), the distance between them is:
[tex]d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}[/tex]
Substituting x1=-6, x2=-2, y1=3, y2=0:
[tex]r=\sqrt{(-2+6)^2+(0-3)^2}[/tex]
[tex]r=\sqrt{4^2+(-3)^2}[/tex]
[tex]r=\sqrt{16+9}=\sqrt{25}=5[/tex]
The radius of the circle is 5.
what is the measure of <ABD
Answers
if a load of bread cost 25 cents two years ago, how much does it cost now?
Answers
Answer:.80
p-by-step explanation:
HALP, HELP, YELP, HELP MEH PLZ, PLZ, PLZ, PLZ, PLZ, PLZ, PLZ I WILL GIVE BRAINLIST PLZ AND NO DOO-DOO ANSWERS PLZ
Options-
(1.5,9)
(2.5,14)
(1.25,5)
(2.25,12
Answers
Answer:
1,5,9
Step-by-step explanation:
Answer:
(1.5,9)
Step-by-step explanation:
pls give this brainliest
HELP PLEASEEE...Naming Your Solution When you are asked to name your solution if you have one... that means. When you have ONE solution, what's the ordered pair where your lines cross?
Answers
Answer:
It means that you need to state whether there are any solutions and how many there are. For example if the equation ends up with an answer like 2=5 there is no solution because 2 does not equal 5. if the equation ends up with an answer of 0=0 there is infinitely many solutions because 0 does equal 0. if it comes out as x=9 there is one solution because x only has one answer to (keep in mind these are just examples)
Step-by-step explanation:
The order pair would be where the two lines intersect perpendicularly with each other forming a 90° angle
Maria made some purchses at the Sunflower Market. She bought strawberries for $3.50, carrots for $2.25 and a bouquet of flowers for $9.95. If Maria uses a 20% coupon and has to pay 5.5% tax, how much will she pay in total? (Round your answer to the nearest hundredth)
Answers
Answer:
$13.25
Step-by-step explanation:
First you add everything up to get you to $15.70, then the 20% is changed to .2 which you then multiply 15.70 by .2 giving you 3.14. You then take 15.70 minus 3.14 which then gets you to 12.56. Then you take the tax of 5.5% and times $12.56 by it, giving you 69 cents, as your tax. Add those together to get 13.25, and then your finished.
Answer:
$13.25
Step-by-step explanation:
First let's add together the cost of all the items Maria bought:
3.50 + 2.25 + 9.95 = 15.70
The total cost of all the items without a coupon or tax is $15.70.
If Maria uses a 20% coupon, the value of the total cost will be 80% of its original value. So, multiply 15.7 by 0.8 to find the cost after the coupon:
15.7 * 0.8 = 12.56
The new total cost is 12.56. Now we need to find the sales tax. Multiply 12.56 by 0.055 to find the value of the sales tax:
12.56 * 0.055 = 0.6908
0.6908 rounds to 0.69. Add the cost of the sales tax to the total cost to get the final answer:
12.56 + 0.69 = 13.25
The total cost Maria will pay is $13.25
Hope this helps :)
Which table contains only corresponding x - values and y - values where the value of y is 3 more than the quotient of x and 2?
Answers
Answer:
Step-by-step explanation:
Think its g
From the solution, we can see that the table that tally is the table G.
If the value of y is 3 more than the quotient of x and 2, the required function is expressed mathematically as;
[tex]y=\frac{x}{2} + 3[/tex]
To get the corresponding value that satisfies the equation, we will substitute the values of "x" to get the corresponding value of y
If x = 7
[tex]y=\frac{7}{2} + 3\\y=3.5 + 3\\y=6.5\\[/tex]
Checking one more value of x;
If x = 10
[tex]y=\frac{10}{2} + 3\\y=5 + 3\\y=8\\[/tex]
From the solution above, we can see that the table that tally is the table G.
Learn more here: https://brainly.com/question/16097244
HI GUYS, PLEASE HELP ME FOR THE ALGEBRAIC EXPRESSOIN 6x=yx2+5
Answers
Step-by-step explanation:
6x=2x+5
6x-2x=5
4x=5
4x/4=5/4
X=1.25
What are the rules to multiplying and dividing integers. Explain using the example -9 × 3
i know how to do the problem but the question..
Answers
Triangle ABC has vertices A(-3, -5), B(0, 4), and C(2, 5).
Which statement about triangle ABC is true?
A. Since two of the sides have slopes that are negative reciprocals, it is a right triangle.
B. Since two of the sides are congruent, it is a right triangle.
C. Since none of the sides have slopes that are negative reciprocals, it is not a right triangle.
D. Since none of the sides are congruent, it is not a right triangle.
Answers
Answer:
D. Since none of the sides are congruent, it is not a right triangle.
Step-by-step explanation:
This is the weirdest triangle I've ever seen.
Since none of the sides have slopes that are negative reciprocals, it is not a right triangle. Therefore, option C is the correct answer.
The given triangle ABC has vertices A(-3, -5), B(0, 4) and C(2, 5).
What is slope of a line?The slope of the line is the ratio of the rise to the run, or rise divided by the run. It describes the steepness of line in the coordinate plane.
The formula to find the slope of a line is slope = (y2-y1)/(x2-x1)
Here, slope of AB is
m= (4+5)/(0+3)
= 3
Slope of BC is
m= (5-4)/(2-0)
= 1/2
= 0.5
Slope of CA is
m= (5+3)/(2+3)
= 8/5
= 1.6
Since none of the sides have slopes that are negative reciprocals, it is not a right triangle. Therefore, option C is the correct answer.
To learn more about the slope of a line visit:
https://brainly.com/question/14511992.
#SPJ2
Kyle's fencing team is selling calendars to raise money. They earn $0.40 On each calendar they sell. Their goal is to earn more than $327. Write and solve an inequality to find the least number of calendars they can sell and still reach their goal.
Answers
Answer:
818
Step-by-step explanation:
Amount earned per calendar = $0.40
Target amount = > $327
Least number of calendars they can sell ;
(Number of calendars * amount earned per calendar) > 327
Let number of calendars = x
0.40x > 327
x > 327/0.40
x > 817.5
Least Number of calendars they can sell is 818
5r-8.53 whenr =12 and s =4
Answers
Answer:
where is s. it's not in the equation you sent
Someone pls add me as their friend quick
Pls Pls Pls
All my points
Answers
Answer:
Ok ig
Step-by-step explanation:
Answer:
Ok ill add u as a friend
Step-by-step explanation:
but why?
(6x10)+(8x1)+(5x.1)+(0x.01)+(1x.001)+(9x.0001)
Answers
Answer:
(6x10)+(8x1)+(5x.1)+(0x.01)+(1x.001)+(9x.0001)
=68.5019
A figure has the following vertices: A(0,5), B(8,3), C(6,0). What are the vertices of the
figure after a reflection across the y-axis?
Answers
Answer:
(0, 5), (-8, 3), (-6, 0)
Step-by-step explanation:
(0, 5) reflected across the y-axis = (0, 5)
(8, 3) reflected across the y-axis = (-8, 3)
(6, 0) reflected across the y-axis = (-6, 0)
Since the reflection is across the y-axis, we have to switch all of the x-values signs from positive to negative to get them from the top right side of the graph (positive side) to the top left side of the graph (negative side).
The only exception in this case is with the x-value 0 because 0 can never be negative or positive and remains in the middle of the graph.
(4x^2-9)/(2x^2-9x+9) / (2x+3)/(4x^2-12x)
Answers
Answer:
I attached images that should help
Answer:
2x-3
______
8x³•(x-3)
Step-by-step explanation:
LET ME EXPLAIN, THAT HOW I GET THE ANSWER
STEP 1
((4•(x2))-9)
———————————————— ÷ (2x+3) ÷ (22x2-12x)
(((2•(x2))-9)+9)
STEP 2
((4•(x2))-9)
———————————— ÷ (2x+3) ÷ (4x2-12x)
((2x2-9)+9)
STEP 3
(22x2 - 9)
—————————— ÷ (2x + 3) ÷ (4x2 - 12x)
2x2
STEP 4
4x2 - 9
Simplify ———————
2x2
MY EXPLANATION THAT HOW TO GET THE SQUARE:
Trying to factor as a Difference of Squares:
4.1 Factoring: 4x2 - 9
Theory : A difference of two perfect squares, A2 - B2 can be factored into (A+B) • (A-B)
Proof : (A+B) • (A-B) =
A2 - AB + BA - B2 =
A2 - AB + AB - B2 =
A2 - B2
Note : AB = BA is the commutative property of multiplication.
Note : - AB + AB equals zero and is therefore eliminated from the expression.
Check : 4 is the square of 2
Check : 9 is the square of 3
Check : x2 is the square of x1
Factorization is : (2x + 3) • (2x - 3)
4.2 Attempting Polynomial Long Division
Attempted Long division of
2x + 3
By :
2x2
Was aborted due to the followinf reason :
Divisor bigger than Dividend
THIS IS THE CONTINUATION OF MY ANSWER:
Equation at the end of step 4
(2x + 3) • (2x - 3)
——————————————————— ÷ (2x + 3) ÷ (4x2 - 12x)
2x2
STEP 5
(2x+3)•(2x-3)
Divide ————————————— by 2x+3
2x2
Canceling Out :
5.1 Cancel out (2x + 3) which appears on both sides of the fraction line.
Equation at the end of step 5
(2x - 3)
———————— ÷ (4x2 - 12x)
2x2
STEP 6
2x-3
Divide ———— by 4x2-12x
2x2
STEP 7
Pulling out like terms
7.1 Pull out like factors :
4x2 - 12x = 4x • (x - 3)
Multiplying exponential expressions :
7.2 x2 multiplied by x1 = x(2 + 1) = x3
This is the final ans:
2x - 3
—————————————
8x3 • (x - 3)
Evaluate. y2 + 2y + 5 for y = -5
Answers
Answer:
20
Step-by-step explanation:
Evaluate for y= −5
(−5)2+(2)(−5)+5
(−5)2+(2)(−5)+5
=20
Select the equation which represents the graph.
Question 2 options:
A: y + 3 =− 4/5(x − 2)
B: y + 3 =− 5/4(x − 2)
C: y + 1 =− 4/5(x − 3)
D: y + 1 =− 5/4(x − 3)
Answers
My problem is #2 but I am confused on how to draw it.
Answers
An isosceles triangle is a triangle with 2 equal sides and 1 un equal side. So just draw a triangle with those measurements.
As you can see in the picture the triangles has two equal sides so it’s isosceles.
Hope this helps :D
what is the solution set of the above question ?
Answers
Answer:
The solution set is { } or ∅ ⇒ empty set
Step-by-step explanation:
∵ 2x + 10 < 10
→ Subtract 10 from the two sides of the inequality
∵ 2x + 10 - 10 < 10 - 10
∴ 2x < 0
→ Divide both sides by 2
∴ [tex]\frac{2x}{2}[/tex] < [tex]\frac{0}{2}[/tex]
∴ x < 0
∴ The solutions are all the negative numbers
∵ x ∈ N
∵ N is the set of Natural numbers
→ The natural numbers start at 1 and include all positive whole numbers
∴ N = {1, 2, 3, 4, 5, ..............}
∵ N does not contain any negative numbers
∴ The solution set is an empty set ⇒ ∅
∴ The solution set is { } or ∅
Need Answer ASAP only 3 min
Answers
The answer to 29:
D
The answer to 6:
G
What equation in slope intercept form represents the line that passes through the two point? (6.9,5.9), (10.9,-2.1)
Answers
Answer:
y = 2x + b
I dont know what b is but the slope is 2 I think
Which of the functions below could have created this graph ?
Answers
Answer:
Step-by-step explanation:
There is parabola on the graph, so the function might be quadratic or 4th power. We have no numbers on axises, then let's analyze the answers:
(A) The graph is no parabola for this function.
(B) The parabola for " - x² " is opened downward.
(C) The parabola for this function is also opened downward.
(D) This one option is the answer. The y-intercept is (-2)
According to the y-intercept and it's behavior, the function that could have created it's graph is:
D. [tex]F(x) = x^4 + 2x - 2[/tex]
This function has a negative y-intercept, that is, when [tex]x = 0[/tex], y has a negative value, which means that options A and B are incorrect.
The function also points upwards, which means that the leading coefficient, that is, the multiplier of the value of x with the highest exponent is positive, hence option C is incorrect.
Thus, the function is:
D. [tex]F(x) = x^4 + 2x - 2[/tex]
A similar problem is given at https://brainly.com/question/15446728