Answer:
∠ECD is 110°
Step-by-step explanation:
For a cyclic quadrilateral,
∠ABC + ∠AEC = 180°
Therefore ∠AEC = 180° - 45° = 135°
∠CAE + ∠ACE + ∠AEC = 180° (Angles in a triangle)
Therefore ∠CAE = 180 - 20 - 135 = 25°
∠CAE = ∠CDA = 25° (Base angles of isosceles triangle ΔCAD)
∠CED + ∠AEC = 180°(Sum of angles on a straight line)
Therefore ∠CED + 135° = 180°
∠CED = 180° - 135° = 45°
∠ECD + ∠CED + ∠CDA = 180°
Therefore ∠ECD = 180° - (∠CED + ∠CDA)
∠ECD = 180° - (45° + 25°) = 110°
Therefore, ∠ECD = 110°.
Southern Bank has two types of account.
Both accounts pay compound interest.
Everyday saver account:
Interest
2.4% per annum
1234 account:
Interest
3.4% per annum
Sue invests £2300 in the saver account.
Bill invests £1800 in the 1234 account.
a) Work out how much interest Sue and Bill each get after 3 years.
Sue:
Bill:
b) If the interest for the 1234 account changes to 4% in the 3rd year,
who will get the most interest after 3 years, Sue or Bill?
(THE ANSWER TO THIS IS 'Bill', I put it in just in case someone
else wanted to know)
Answer:
a. sue: $2085.24
bill:$2530
Answer:
see picture for full answer explanation
Step-by-step explanation:
how do i solve log_8(5x+4)=3x-4
Answer:
use a calculator
Step-by-step explanation:
Which expression is equivalent to [tex]\sqrt{-80}[/tex]?
I need help with these two
Help me please I am so sad
Answer:B 8;45
Step-by-step explanation:
Answer:
Dont be sad :) The answer is B but give brainliest to the other person ʕ •ᴥ•ʔ
Step-by-step explanation:
SAT scores were originally scaled so that the scores for each section were approximately normally distributed with a mean of 500 and a standard deviation of 100. Use the empirical rule to estimate the probability that a randomly-selected student gets a section score between 400 and 700.
a. 68%
b. 95%
c. 81.5%
d. 13.5%
10 points
You randomly select 2 cards from a standard deck of 52 playing cards.
What is the probability that all 2 cards are diamonds when you REPLACE
each card before selecting the next card? (If you use decimals, round
your answer to the nearest thousandth, which is 3 decimal places.) *
O
1/16
O 0.125
0.125
O
0.059
1/26
Answer:
1/169
Step-by-step explanation:
52 cards in a deck, 13 are diamonds
P(diamond) = number of diamonds/ total
= 13/52 = 1/13
Replace the card
52 cards in a deck, 13 are diamonds
P(diamond) = number of diamonds/ total
= 13/52 = 1/13
P (diamond, replace, diamond) = 1/13 * 1/13 = 1/169
analyze the graph of the exponential decay function the intial value is
the base, or rate of change is
the domain is
Answer:
2 minutes ago Suppose a long term investment is modeled by the exponential fuction V(t)= 30(25) ^t/20 where V(t) is the total value after t year 5 minutes ago
Step-by-step explanation:
Can someone please help me with this two please
Answer:
1. B
2. C
Step-by-step explanation:
1. In this, we already know one side and one angle are congruent. For the triangles to be congruent by SAS, another side is necessary. Thus CB = FE
2. Here, we see that one set of sides are congruent. We see another set of angles are congruent as well. We also know that the center angle is congruent as the angles are formed by two straight lines intersecting. Since we see 2 next door angles and the side beside it congruent, they are proven congruent by AAS.
Problem Kiersten runs a website that helps people learn programming. Every month, Kiersten receives a subscription fee of $10\$10$10dollar sign, 10 from each of the subscribers to her website. Last month, the website had 100100100100 subscribers. This month, 30303030 new members joined the website, and 10101010 members cancelled their subscription. How much money will Kiersten's online business earn this month?
Answer:
$1200
Step-by-step explanation:
Every month, Kiersten receives a subscription fee of $10 from each of the subscribers to her website.
Last month she had 100 subscribers. This month, 30 new subscribers joined and 10 members canceled their subscription. The amount of subscribers she has now is:
100 + 30 - 10 = 120
This means that this month, Kiersten will earn:
10 * 120 = $1200
2. Sarah is training for a triathlon. She is planning her training schedule and wants to know how much she should run each week. Her choices are to run 2 ¼ miles three times each week or she can run 1 ¾ miles five times each week. She wants to choose the option with the longest total distance. Which option should she choose? Explain your thinking in numbers and words.
Answer: She should run 1 1/3 miles 5 times a week.
Step-by-step explanation: I converted 3/4 to a decimal to have 1.75 and I multiplied it by 5 because that is how many times she will be running 1.75 miles in a week, I got 8.75. So that means if she runs 1.75 miles for 5 days she will run a total of 8.75 miles. Then I converted 1/4 into a decimal and now have 2.25, then I multiplied 2.25 by 3 and got 6.75. So I saw that 8.75 is greater than 6.75,
So the correct answer is: she should run 1 3/4 miles 5 times a week
The midpoint of is point P at (−16,6). If point A is at (−10,8), what are the coordinates of point B? (−42,20) (−22,4) (−13,7) (2,−5)
Answer:
B (-22 , 4)
Step-by-step explanation:
-16=(-10+x)/2
*2 *2
-10+x=-32
+10 +10
x=-22
6=(8+y)/2
*2 *2
12=8+y
-8 -8
4=y
so B(-22, 4)
The coordinates of point B is (-22, 4).
What are the Coordinates?Coordinates are the set of points in a geometrical plane or space, which is used to denote the exact point in the coordinate plane or space.
If we have the end points (x', y') and (x'', y'').
The mid point is ((x' + x'')/2, (y' + y'')/2).
Given that one of the end point A is at (-10, 8).
The mid point is at P(-16, 6).
Let the other point be B(x, y).
(-10 + x) / 2 = -16 and (8 + y) / 2 = 6
(-10 + x) / 2 = -16
⇒ -10 + x = -32
⇒ x = -32 + 10
⇒ x = -22
(8 + y) / 2 = 6
8 + y = 12
y = 12 - 8
y = 4
Hence the coordinate of the other point is B(-22, 4).
To learn more about Coordinates, click on the link :
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Find the measure of the angle O. (Remember, you are finding the actual angle measure, not the ratio.)
Round to the nearest tenth.
Answer:
Θ ≈ 22.6°
Step-by-step explanation:
Using the cosine ratio in the right triangle
cosΘ = [tex]\frac{adjacent}{hypotenuse}[/tex] = [tex]\frac{AC}{AB}[/tex] = [tex]\frac{12}{13}[/tex] , thus
Θ = [tex]cos^{-1}[/tex] ([tex]\frac{12}{13}[/tex] ) ≈ 22.6° ( to the nearest tenth )
20 boxes of apples have been delivered to a restaurant. The number of apples in each box is counted. Complete the table below and answer the following question. What is the mean number of apples in a box? answer all questions
Answer:
Frequency: 20
A.F: 650
Mean: 30
Step-by-step explanation:
Frequency and A.F were just sums of the values mentioned for each
The mean:
Definition: the average of a data.
Formula: sum of numbers divided by the number of numbers
Answer: (28 x 2 + 29 x 4+ 30 x 8 + 31 x 4+ 32 x 2) divided by 20 = 30
Hope this helps
55 men can finish a piece of work in 42 days. How many additional men must be added to complete the work 9 days earlier.
[tex]55 . 42 = x . 33\\55 . 14 = 11 . x\\x = 5 . 14 = 70\\70 - 55 = 15[/tex]Answer:
Step-by-step explanation:
The additional men required to complete this work 9 days earlier will be 15.
What is work time?In time and work, we need to calculate the time required to complete a unit of work and find work done in a described period of time. Its known the amount of work done by a person varies directly with the time taken by them to complete the work on time.
Given that work was done by 55 men in 42 days
55 men ⇔ 42 days
Rate of work by 1 man ⇔ 1/(55×42)
Rate of work by 1 man ⇔ 1/(2310)
Now by adding N number of people the work need to complete 9 days earlier than 33 days.
Rate of work by 1 man ⇔ 1/[(55+N)×33]
Since the rate of work by 1 man will be the same for both cases
1/(2310) = 1/[(55+N)×33]
N = 15 hence,15 men additional required to complete the work 9 days earlier.
For more information about work time
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If a=7 and =3, evaluate the following expression:
3a+b
Answer:
24
Step-by-step explanation:
The expression given is:
3a+b
We know that a is equal to 7 and b is equal to 3. Therefore, we can substitute 7 in for a, and 3 in for b.
3(7)+3
Solve according to PEMDAS: Parentheses, Exponents, Multiplication, Division, Addition, Subtraction.
Multiply 3 and 7 first
21+3
Add 21 and 3
24
The right answer is 24.
please see the attached picture for full solution
hope it helps
good luck on your assignment
Please answer correctly !!!! Will mark BRAINLIEST !!!!!!!!
Answer:
x + 3 meters
Step-by-step explanation:
We know that the area of a rectangle is length times width, so if we call the length y, we'll get y * (x - 3) = x² - 9.
y = (x² - 9) / (x - 3)
y = (x + 3)(x - 3) / (x-3)
y = x + 3. Hope this helps!
Please answer CORRECTLY !!!!!!!!! Will mark BRAINLIEST !!!!!!!!!!
Answer:
I think it is 60
Step-by-step explanation:
I assume that the time of the launch is 0, so just plug in 0 for x.
What additional information is needed to prove that the
triangles are similar?
To prove AXYZ - AMNO using SSS, you need to
know that
Now that you know the length of XZ, you need to know
that angle O is congruent to v to prove AXYZ- AMNO using SAS.
Can someone explain please!!!
Answer:
Step-by-step explanation:
To prove ΔXYZ ~ ΔMNO using the property of SSS, we need to know that All corresponding sides of these triangles are proportional.
Similarly, If we know the length of side XZ then addition information we need to know that angle O is congruent to angle Z and length of sides YZ, MO and NO to prove ΔXYZ ~ ΔMNO by SAS property.
Angle O is the contained angle between the sides MO and NO.
Answer:
1. MN = 6 and XZ = 17.5
2. angle Z
Step-by-step explanation:
Sorry if this is a late answer but I hope this helps :)
i need examples of translating equations
here you go hope they work
There are 3 boys in a Class of 11 student
What ratio of all student in the class of girls?
What ratio of girls to boys?
Answer:
1) 11:8
2) 3:8
Step-by-step explanation:
Answer:
ratio of girls to all students = 8/11 = 8 : 11
ratio of girls to boys = 8/3 = 8 : 3
Step-by-step explanation:
total students - boys = number of girls.
11 - 3 = 8
a small plant is 2 1\2 intches tall how tall will it be in 3 weeks if it grows 3\4 inch week
Answer:
5 1/4
Step-by-step explanation:
Madison is thinking of a number.She states that the sum of her number , n,and 2/7,is equal to 3/4. write an equation that represents the situation
Answer:
Step-by-step explanation:
If it has really helped u plz don't forget to thank me plz...
Mary drove to Birmingham Airport at 45 miles per hour for the first two hours and then at 70 miles per hour for the remainder of the journey. Her average speed for the entire journey was 60 miles per hour. How long did Mary's journey to Birmingham Airport take?
THE AVERAGE SPEED IS SET TO CONFUSE YOU.
Step-by-step explanation:
IF YOU SEE, THE AVERAGE SPEED YOU TAKE OUT WITH THE SPEEDS
INITIAL AND FINAL YOU ALREADY HAVE
v s (45 mi/h + 70 mi/h)/2 x 57.5 mi/h
ALMOST IS EQUAL TO 60 mi/h
AS FOR TOTAL TIME DISTANCE IS REQUIRED, WE KNOW THAT MARY
TRAVELS FOR MORE THAN TWO HOURS, BUT WE DON'T KNOW FROM
HOW FAR FROM THE AIRPORT MARY START DRIVING. IT WON'T
TAKE THE SAME IF MARY DRIVES FROM MONTGOMERYI OR FROM
BUENOS AIRES, ARGENTINA.
Here is a map of a town.
It has a scale of 2 cm to 7 km.
A centimetre ruler is shown on the map.
What is the real-life distance between the ice rink and the theatre?
Answer:
28km
Step-by-step explanation:
Please answer correctly !!!! Will mark brainliest !!!!!!!!!!!!
Answer:
I believe that your answer is a
Step-by-step explanation:
I remember that the exponent would be multiplied by both sides.
Answer: A
Step-by-step explanation:
the answer is b because if you
multiply it inside and get the exponents the answer
so the answer is A
Hope this helps :)
f(x)= -7x^2 +8x+2
what is the value of the discrimnant of f ?
How many x- intercepts does the graph of f have ?
I NEED THIS PLEASE HELP!!!!!
Answer:
1. discriminate = 120
2. 3 times
im not sure about my answers please correct me if im wrong
Answer:
discrimnant: 120
2
Step-by-step explanation:
A) 350cm2
B) 1000cm2
C) 170cm2
D) 1200cm2
Answer:
1200 cm^2
Step-by-step explanation:
There are four 10 cm by 25 cm sides; the total area of these sides is
4 (10 cm) (25 cm) = 1000 cm^2.
There are two ends; the total area of these is 2 (10 cm) (10 cm) = 200 cm^2.
Thus, the total surface area is 1000 cm^2 + 200 cm^2, or 1200 cm^2 (Answer A).
Determine the final amount of an annuity where you invest $10,000 evenly over the course of 20 years annually at a 5% annual interest rate
Answer:
17359.63
Step-by-step explanation:
(0+500)x1.05
(ans+500)x1.05
(ans+500)x1.05
(ans+500)x1.05
(ans+500)x1.05
(ans+500)x1.05
(ans+500)x1.05
(ans+500)x1.05
(ans+500)x1.05
(ans+500)x1.05
(ans+500)x1.05
(ans+500)x1.05
(ans+500)x1.05
(ans+500)x1.05
(ans+500)x1.05
(ans+500)x1.05
(ans+500)x1.05
(ans+500)x1.05
(ans+500)x1.05
(ans+500)x1.05
=17359.63
i am gurman i have 2 cats igot 1 more how many do i have
Answer:
3 cats
Step-by-step explanation:
You have 2 cats
You buy 1 more
You have 3 cats
Answer:
you have none you, Gurman have put an end to them with your ignorance.
Step-by-step explanation:
2 + 1=3 + Gurman = 0 cats