Answers
Answer:
∠ECF = 37°
Step-by-step explanation:
∠ACG = 37° because it is a complementary angle to 53° (37° + 53° = 90°)
∠ECF = 37° because it is a vertical angle to 37°
The angle ∠ECF can be determined as 27°by using the angle sum property of triangle.
What is a triangle?A triangle is a two dimensional shape bound by three sides. The sum of the interior angles of a triangle is 180°. The longest side of a triangle is always less than the sum of other two sides.
The given problem can be solved by applying angle sum property of the triangle as,
In ΔECF, the sum of angles is given as,
∠ECF + ∠CFE + ∠CEF = 180 (1)
Since, AB║DE as per the diagram shown.
∠BAC = ∠CEF (Alternate interior angles)
Then, ∠CEF = 53°.
Plug ∠CEF = 53° and ∠CFE = 90° in equation (1) to obtain,
∠ECF = 180 - (53 + 90)
⇒ ∠ECF = 27°
Hence, the measure of the angle ∠ECF is obtained as 27°.
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Related Questions
Find the area of each rectangular prism. Pls help
Answers
300.75 you need to find the length, width, and height. then multiple everything together and then by 2
Someone help me please!
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Answer:
ACD
Step-by-step explanation:
PLZZ mark brainliest!!
Answer:
D i think i havent done this in a while
Step-by-step explanation:
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Step-by-step explanation:
good lucks
what is the volume if this rectangular prism
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Answer:
24.2^3cm is the correct answer .
helpppppp ill give brainliest answer if you know
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Answer:
280 in^3
Step-by-step explanation:
Basically, volume is length*width*height (length*width = base area)
So, you just multiple 10, 4, and 7 together. 4 * 7 = 28, and 28 * 10 is 280. Don't forget to make the units cubed (in^3)!
A camp program charges a registration fee and a daily amount.
The total bill for 12 days is $338. The total bill for 19 days is
$506. Slope can be represented by cost per day. Use x as the
number of days and y as the total cost to represent this
situation.
a. Find the slope for this situation. What does it represent?
b. Write a linear equation that models this situation.
Answers
Using the information given, it is found that:
a) The slope is of 24, which means that for each day, the total bill increases by $24.b) The linear equation is: [tex]y = 24x + 50[/tex]Linear functions:A linear function is modeled by:
[tex]y = mx + b[/tex]
In which:
m is the slope, which is the rate of change, that is, by how much y changes when x changes by 1.b is the y-intercept, which is the value of y when x = 0.Item a:
The total bill for 12 days is $338.The total bill for 19 days is $506.The slope is given by the change in y(total bill) divided by the change in x(number of days), hence:
[tex]m = \frac{506 - 338}{19 - 12} = 24[/tex]
The slope is of 24, which means that for each day, the total bill increases by $24.
Item b:
The total bill for 12 days is $338, hence, when [tex]x = 12, y = 338[/tex], and this is used to find b.[tex]y = 24x + b[/tex]
[tex]338 = 24(12) + b[/tex]
[tex]b = 50[/tex]
Hence, the linear equation is: [tex]y = 24x + 50[/tex]
You can learn more about linear functions at https://brainly.com/question/25823744
simply x to the power of 10 over x to the power of 7
Answers
Answer:
x^10 x/7= x 11/7
Step-by-step explanation:
hthat means x and then X 11 over 7 btw..
Answer:
[tex] {x}^{3} [/tex]
Step-by-step explanation:
[tex] \frac{ {x}^{10} }{ {x}^{7} } = {x}^{10 - 7} = {x}^{3} \\ [/tex]
HELP ASAP WHAT IS THIS ANSWER
Answers
Answer:
Step-by-step explanation:
x = 1/2 ( a + b)
x = 1/2 (129 + 71)
x = 1/2 (200)
x = 100 °
you just have to remember that formula
Help Me as quick as possible ty
Answers
Answer: 4/2
Step-by-step explanation:
Answer:
5 It is 10 over 2
Step-by-step explanation:
reduce the numbers
Point X of triangle XYZ is located at (-5, -6). If triangle XYZ is translated 3 units
down and 1 units left, what are the new coordinates of X??
Answers
Answer:
(-6,-9)
Step-by-step explanation:
Which figure could be the result of dilating this triangle with a scale factor greater than 1? On a coordinate plane, a triangle has points (0, 0, (0, 3), (6, 0). On a coordinate plane, a triangle has points (0, 0), (0, 3), (9, 0). On a coordinate plane, a triangle has points (0, 0), (0, 1), (6, 0). On a coordinate plane, a triangle has points (0, 0), (0, 5), (10, 0). On a coordinate plane, a triangle has points (0, 0), (0, 2), (4, 0).
Answers
Answer:
C
Step-by-step explanation:
Edge
The required figure has been attached below could be the result of dilating a given triangle with a scale factor greater than 1. The correct answer would be an option (C).
What is a transformation?A point is transformed when it is moved from where it was originally to a new location. Translation, rotation, reflection, and dilation are examples of different transformations.
The triangle has points (0, 0), (0, 3), and (6, 0) which are given in the question.
As per option (C), we have
On a coordinate plane, a triangle has points (0, 0), (0, 5), and (10, 0).
This result of dilating a given triangle with a scale factor greater than 1.
The required figure has been attached below which represents the dilation.
The correct answer would be an option (C).
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PRE-CALCULUS HELP
Hi can I please get some help on these two questions, I have to records the answer vocally and am not sure how to complete these last ones.
The point (2,5) is on the terminal side of 0. Explain how to find tan 0
Explain how to convert 42' 35'19' to decimal degrees.
Answers
Identify the GCF and then factor out: 6x2y + 12xy2
Answers
Answer:
6xy(x+2y)
Step-by-step explanation:
6x²y+12xy²
The GCF between 6 and 12 is 6. Factor out 6.
= 6(x²y+2xy²)
The GCF between x² and x is x. Factor out x.
= 6x(xy+2y²)
The GCF between y and y² is y. Factor out y.
= 6xy(x+2y)
Therefore, the GCF of the expression is 6xy and the factored expression is 6xy(x+2y).
I hope this helps!
Which shows the equation below written in the form ax^2+bx+c=0. x+9=4(x-1)^2
Answers
Answer:
[tex]4x^2 - 9x - 5 = 0[/tex]
Step-by-step explanation:
To place the equation in standard form, we expand the operations. So
[tex]4(x-1)^2 = x + 9[/tex]
[tex]4(x^2-2x+1) = x + 9[/tex]
[tex]4x^2 - 8x + 4 - x - 9 = 0[/tex]
Combining the like terms:
[tex]4x^2 - 9x - 5 = 0[/tex]
Helllllllpppppp please help me
Answers
Answer:
i think maybe j that is what I think
What is 21+G as an algebraic expression?
Answers
Answer:
i dont know
Step-by-step explanation:
lol
Answer:
(20 + 1) + G
Step-by-step explanation:
20 POINTS! which values are solutions to x < 4
Answers
Answer:
A
Step-by-step explanation:
because 8 and 10 are greater than 4
Answer:
Step-by-step explanation:
x<4
Only answer C has two values which are less than 4
PLEASE HELP!
find the missing value:
Answers
Answer:
um
Step-by-step explanation:
23 + 7 + 15 =
Simplify each expression. Justify each step
Answers
Suppose John is a high school statistics teacher who believes that watching many hours of TV leads to lower test scores. Immediately after giving the most recent test, he surveyed each of the 24 students in his class and asked them how many hours of TV they watched that week. He then matched each student's test grade with his or her survey response. After compiling the data, he used hours of TV watched to predict each student's test score. He found the least-squares regression line to be
Answers
This question is incomplete, the complete question is;
Suppose John is a high school statistics teacher who believes that watching many hours of TV leads to lower test scores. Immediately after giving the most recent test, he surveyed each of the 24 students in his class and asked them how many hours of TV they watched that week. He then matched each student's test grade with his or her survey response. After compiling the data, he used hours of TV watched to predict each student's test score. He found the least-squares regression line to be y" = -1.5x + 85.
He also calculated that the value of r, the correlation, was -0.61.
what is the correct value of the coefficient of determination R² and give a correct interpretation of its meaning
Answer:
Interpretation of coefficient of determination R² = 0.3721
R² = 0.3721, meaning 37.21% of the total variation in test scores can be explained by the least square regression line
Step-by-step explanation:
Given the data in the question;
the least square regression line is;
y" = -1.5x + 85
the correlation coefficient r = -0.61
Now, the coefficient of determination R² is square of correlation coefficient r
R² = -61²
R² = 0.3721
Type the correct answer in each box.
Consider the expressions shown below.
А.
B
C с
-872
-
3.5 + 4812
3r + 8 8r2 + 3r
4
Complete each of the following statements with the letter that represents the expression.
-
(3x2 7x + 14) + (5x2 + 41 6) is equivalent to expression
(2x2 – 5x – 3) + (-10x2 + 2x + 7) is equivalent to expression
(12t2 – 2x – 13) + (-4x2 + 5x + 9) is equivalent to expression
Answers
Answer/Step-by-step explanation:
✔️(3x² - 7x + 14) + (5x² + 4x - 6)
3x² - 7x + 14 + 5x² + 4x - 6 (distributive property)
Add like terms
3x² + 5x² - 7x + 4x + 14 - 6
8x² - 3x + 8
Therefore:
✅(3x² - 7x + 14) + (5x² + 4x - 6) is equivalent to expression 8x² - 3x + 8.
✔️(2x² - 5x - 3) + (-10x² + 2x + 7)
2x² - 5x - 3 - 10x² + 2x + 7 (distributive property)
Add like terms
2x² - 10x² - 5x + 2x - 3 + 7
-8x² - 3x + 4
Therefore:
✅(2x² - 5x - 3) + (-10x² + 2x + 7) is equivalent expression to -8x² - 3x + 4
✔️(12x² - 2x - 13) + (-4x² + 5x + 9)
12x² - 2x - 13 - 4x² + 5x + 9
12x² - 4x² - 2x + 5x - 13 + 9
8x² + 3x - 4
Therefore:
✅(12x² - 2x - 13) + (-4x² + 5x + 9) is equivalent expression to 8x² + 3x - 4
Answer:
B, A, C
Step-by-step explanation:
PLEASE HELP I WILL GIVE BRAINLIEST IF YOU GET IT RIGHT 7TH GRADE MATH
Answers
Answer:
Need the problem in order to help
Step-by-step explanation:
so you have 5 feet into 13 rods what is the total length?
Answers
Answer:
15
Step-by-step explanation:
t¡yesç
Question 1
1 pts
The area of triangle LMN is 36 square inches. Find the base.
8 in.
M
?
inches
Answers
Answer:
Step-by-step explanation:
Did you get the answer?
I need help ASAP reports are coming to and I need to pass help??
Answers
Answer:
A
Step-by-step explanation:
wdith times height x half = your area
1/2 (half) x 10 (height) times 24 (width)
Ages of Students
All students in an after school martial arts class were
asked their age. The dot plot shows the results of the
survey. How many students were surveyed?
А50 students
C 11 students
B16 students
D 7 students
Answers
Nathan needs to order some new supplies for the restaurant where he works. The restaurant needs at least 571 forks. There are currently 361 forks. If each set on sale contains 10 forks, use the drop-down menu below to write an inequality representing
Answers
Answer:
Nathan must order 21 sets of forks for the restaurant.
Step-by-step explanation:
Since Nathan needs to order some new supplies for the restaurant where he works, and the restaurant needs at least 571 forks since there are currently 361 forks, if each set on sale contains 10 forks, to determine the number of sets to buy you must perform the following calculation:
(571 - 361) / 10 = X
210/10 = X
21 = X
So Nathan must order 21 sets of forks for the restaurant.
g^4+ 5h
when g=2 & h=4
Answers
Answer: 36
Step-by-step explanation:
g^4+5h
2^4+5(4)
16+20
36
Which of The Following Equations are true for the number 9 Select all the Apply
A. 4 ÷ [] = 9/4
B. 1/9 = [] ÷ 9
C. 7 ÷ [] = 7/9
D. [] ÷ 1/9 = 81
Ps. the [] are boxes/blank spots
Answers
Answer:
C and D
Step-by-step explanation:
C. 7 ÷ 9 = 7/9
D. 9 ÷ 1/9 = 9 x 9/1 = 81
Write the percent as a fraction or mixed number in lowest term 74 3/8%
Answers
Answer:
222/2 = 111
8/2 = 4
74 /1
Step-by-step explanation: