Explanation:
[tex]a_{5}=15\\a_{5}=\frac{a_{4}}{2}\\15=\frac{a_{4}}{2}\\a_{4}=30\\[/tex]
Each one is actually 1/2 of the one before so,
a5 = 15
a4 = 30
a3 = 60
a2 = 120
a1 = 240
Please help the image is below 22points
Answer: C
Step-by-step explanation:
-3 is least than -2
Answer:
D. Would be your answer :)
Step-by-step explanation:
i like your pfp, taiga is so cute ^^
Sydney simplifies the expression 2csc(-y) with the work below. What did she do wrong? 2csc(x+y)= 2/sin(x-y)
=2/cos x cos(-y)+sin xsin(-y)
=2/cos x cos y - sin xsin y
=2/cos( x +y)
= 2 sec (x + y)
Answer:
We know that:
csc(x) = 1/sin(x)
Now we want to work with:
2csc(x+y)
The first step is:
2csc(x+y)= 2/sin(x-y)
This is correct so far.
Now we need to use the relation:
sin(a + b) = sin(a)*cos(b) + sin(b)*cos(a)
Then:
sin(x - y) = sin(x)*cos(-y) + sin(-y)*cos(x)
sin(x) is an odd function, then: sin(-y) = -sin(y)
and cos(x) is an even function, then:
cos(-y) = cos(y)
Then we get:
sin(x - y) = sin(x)*cos(y) - sin(y)*cos(x)
then:
2/sin(x-y) = 2/(sin(x)*cos(y) - sin(y)*cos(x))
Now let's look at what she did:
2/sin(x-y) = 2/(cos x cos(-y)+sin xsin(-y))
Here is her error, she replaced:
sin(x - y) by cos x cos(-y)+sin(x)sin(-y)
This relation is for the cosine function, not the sine one, so here is her mistake.
Answer:
[tex]sin(\alpha -\beta )\neq cos \alpha[/tex] [tex]cos\beta +sin\alpha[/tex] [tex]sin\beta[/tex]
Step-by-step explanation:
I just did the test
Can someone explain how to solve this?
9514 1404 393
Answer:
(2/3)(e^t +1)^(3/2)
Step-by-step explanation:
Use the substitution ...
u = e^t +1
Then du = e^t and you are finding the integral of ...
∫u^(1/2)·du
which you know by the power rule is ...
(2/3)u^(3/2) = (2/3)(e^t +1)^(3/2)
4) Ray's music album had 15 rock songs, 8 karaokes, 12 hip hops, 10 pop songs,
15 lullabies, 13 jingles and 17 rap songs.
Mean:
Median :
Mode :
Range :
Answer:
Mean: 12.857
Median: 13
Mode: 15
Range: 9
Step-by-step explanation:
First, let's define what each of these terms mean.
Mean is the average of all the numbers in a set of data. Median is the number in the middle of a set of data after being put in ascending order. Mode is the number most frequently seen in a set of data. Range is the difference between the largest and the smallest number in a set of data.
First, let's go ahead and put all our terms in ascending order. It'll look like this: 8, 10, 12, 13, 15, 15, 17.
To find our mean, we'll add up all the terms and divide them by how many there are. First, we'll add up 8 + 10 + 12... and so on for a total of 90. Next, we'll divide 90 by 7 since there are 7 different terms in our set. 90 / 7 should roughly give you a mean of 12.857, but you can round it as needed.
Next, we'll find the median. The median is the number that is in the exact middle of a set once the terms are put in ascending order. Since, we put our terms in order already, we can see that the number in the middle of our set is 13, and I underlined it in the set to give you a visual!
Next, we'll find the mode. The mode is the number most frequently seen in our set of data. Since 15 is listed the most frequently (twice) it is our mode!
Finally, we'll find the range. The range is just the biggest number minus the smallest number. Our biggest number here is 17, and our smallest number here is 8. Just do 17 - 8 for a range of 9. Let me know if you have any other questions!
This graph shows a proportional relationship between lengths of each side of a regular polygon and the perimeter of the polygon what type of polygon is represented
Hi can someone help me out. This is due by the end of the day.
what is the range of 53, 63, 65, 66, 74, 81, 87?
Answer:
The range is 34!
Step-by-step explanation:
87-53=34
Answer:
34
Step-by-step explanation:
Hope this helps.
What is the fraction for 5copies of 1/5
Answer:
5 x 1/5 = 1 whole
The key word "of" means multiplication.
Hello pls help meeee last one i swear.
Answer:
0.006
Step-by-step explanation:
Answer:
0.006 inches of rain
Hope that helps
Which of the following shows the polynomial below written in descending
order?
5x3 - x + 9x + 4 + 3x11
*
Choice
А.
3x11 + 9x + 5x2 - x + 4
В.
4 + 3x11 + 9x + 5x3 - x
C.
3x11 + 9x - x + 4 + 5x3
D.
9x + 5x2 + 4 + 3x11 - x
Your answer
The price listed for 4 dinner plates at a home store is $23.88. What amount will Jane need to pay, if she decides to purchase 10 such dinner plates?
( negative 9 - 6w) times 10
Answer:
-3(3+20w)
Step-by-step explanation:
Factor the expression
7. Expresar en notación científica las siguientes
cantidades:
A. 89500000000 mm
Answer:
8.95 × 10^7
¡Que tengas un hermoso día!
what is 5x + 9 - 2x - 7
Consider the given figure.
Co
an
What information about this figure would be used as a step in a proof of the Pythagorean theorem?
showing that Acos - AABC
showing that ADC+DC2-AC2
showing that AABC - AACD - ACBD
Answer:
B. showing that AD^2 + DC^2 = AC^2
Step-by-step explanation:
Pythagorean theorem formula: a^2 + b^2 = c^2
^^^^thats all i know, i got the answer from my teacher tho lol
the product of two numbers is 342. if one number is 18, what is the other number.
Answer:
19
Step-by-step explanation:
product is the answer of multiplying two numbers together
342/18=19
check
19x18=342
Hello! I’m struggling with this question just if someone could help me!
Answer: 44sq
Step-by-step explanation:
Trust me :)
Expand each expression and collect like terms. a. -3(2p - 3q)
Answer:
-6p+9q
Step-by-step explanation:
Multiply -3 with 2p and multiply -3 with 3q.
The price of Stock A at 9 A.M. was $12.95 Since then, the price has been increasing at the rate of $0.12 each hour. At noon the price of Stock B was $13.70. It begins to decrease at the rate of $0.13 each hour. If the two rates continue, in how many hours will the prices of the two stocks be the same?
Answer:
The prices of the two stocks will be the same in 1.56 hours.
Step-by-step explanation:
The price of Stock A at 9 A.M. was $12.95 Since then, the price has been increasing at the rate of $0.12 each hour.
This means that after x hours, the value of Stock A is:
[tex]S_{A}(x) = 12.95 + 0.12x[/tex]
After noon:
Noon is 3 hours after 9 AM, so
[tex]S_{A}(3) = 12.95 + 0.12*3 = 13.31[/tex]
So in x hours after noon, the value is given by:
[tex]S_{A}(x) = 13.31 + 0.12x[/tex]
At noon the price of Stock B was $13.70. It begins to decrease at the rate of $0.13 each hour.
This means that after x hours, the value of Stock B is:
[tex]S_{B}(x) = 13.70 - 0.13x[/tex]
In how many hours will the prices of the two stocks be the same?
This is x for which:
[tex]S_{A}(x) = S_{B}(x)[/tex]
[tex]13.31 + 0.12x = 13.70 - 0.13x[/tex]
[tex]0.25x = 0.39[/tex]
[tex]x = \frac{0.39}{0.25}[/tex]
[tex]x = 1.56[/tex]
The prices of the two stocks will be the same in 1.56 hours.
A 10-pound bag of wildflower seed covers 25 square feet. How many pounds of seed does it take to cover 1 square foot?
Answer:
0.4 pounds
Step-by-step explanation:
10 pounds / 25 square feet
to get the number of pounds per feet
10 / 25 = 0.4
so, your answer is 0.4 pounds per 1 square foot
explain how you can use multiplication to write a fraction that is equivalent to 3/5
Answer: just multiple the numerator and denominator by the same number
Step-by-step explanation:
For f(x) = -4x + 2, find f(1).
9514 1404 393
Answer:
f(1) = -2
Step-by-step explanation:
Put 1 where x is and do the arithmetic.
f(1) = -4·1 +2
f(1) = -4 +2
f(1) = -2
Use elimination to solve the system
2x-y=10
8x+y=20
Please someone help I need help so bad I’m so scared I’m gonna fail this test I may get held back if I fail this test please help me
I need help understanding how to solve an equation like this I'm struggling bad
Answer:
plot 1 on the y axis first, go up one point, to the right 3, then keep this pattern going
Step-by-step explanation:
next plug in x values (1/3x)
D= domain, which is located on the x axis
for this reason, substitute D values for x
Remember to simplify your answer (make improper fractions mixed numbers) 3 : 4. 5
Answer:
1:1.5
Step-by-step explanation:
i dont know if thats the answer u want but ye
how far apart are (10,8) and (-6,8)?
HELP ME!!
Answer: 16 units
Since both Y Values are the same, look at the X values. 10 and -6. How far apart is 10 from -6? (10 - (-6) = 16)
16 units, good luck!
50 points! Correct answer will get brainliest. Random answers will be reported
Answer:
4, -8
Step-by-step explanation:
Answer: The answer is <-4, -8>
Step-by-step explanation:
What is 57 x 4?
Enter your answers in the boxes to complete the area model.
Answer:
200 + 28= 228
..................
The values of the numbers in the boxes is 57 x 4 = 200 + 28 = 228
Given data ,
Let the equation be represented as A
Now , the value of A is
Let the first number be represented as p
where the value of p = 57
Let the second number be represented as q
where the value of q = 4
And , A = 57 x 4
where the blank spaces in the boxes are by distributive property and
A = 57 x 4
( 50 + 7 ) 4 = ( 50 x 4 ) + ( 7 x 4 )
On simplifying the equation , we get
A = 200 + 28
A = 228
Therefore , the value of A is 228
Hence , the expression is A = 228
To learn more about equations click :
https://brainly.com/question/19297665
#SPJ6
which expression is equivalent to (x2-7/5x-4) - (2x+9/5x-4)
Answer:
its b on edge 2020
Step-by-step explanation:
What is the area of the figure?
10 inches
8 inches
6 inches
16 inches