Answer:
ITS (B) 30
Step-by-step explanation:
Answer:
B
Step-by-step explanation:
edge
A team from the high school went on a science-and-math quiz show. The science questions were worth 3 points and the math questions were worth 1 point. The team answered a total of 16 questions and earned 36 points. How many questions did the team answer in each category?
Answer:
5 science questions and 1 math question
Step-by-step explanation:
i literally just counted on my fingers by 3
How many cups of mashed potatoes were four people get if they equally shared 3/4 cup of potato
Answer:
3/4 x 2 = 6/8 6/8 ÷ 4 = 2/8
so each person would get 2/8 cups of potatoes
NO LINKS!!!
At the dance the DJ is blaring music at 110 decibels. As he fades the music, the sound level decreases about 16% every second.
How long until the sound level falls below 30 decibels? (SHOW WORK!)
Equation:_____________________
Answer: ______________________
We are given:
Initial sound Intensity: 110 dB
Rate of decreasing sound level: 16% every second
Constructing the equation:
Since the Intensity decreases by 16% of it's current value every second.
Intensity(t) = [tex]110 * (\frac{84}{100})^{t}[/tex] [where t is the time elapsed]
In this equation, we multiply the initial sound intensity by 84% (since 16% was diminished).
because we are multiplying the same value by 84%, it will keep taking that percentage of the new value, which is what we need here because the music's intensity keeps becoming 84% of the previous value.
Time at which sound level falls to 30 dB:
replacing intensity by 30 in the equation we made.
[tex]30 = 110 * (\frac{84}{100})^{t}[/tex]
[tex]\frac{3}{11} = (\frac{84}{100})^t[/tex]
taking log of both sides.
[tex]log(\frac{3}{11}) = t*log(\frac{84}{100})[/tex]
[tex]\displaystyle \frac{log(\frac{3}{11})}{log(\frac{84}{100})} = t[/tex]
t = 7.452 seconds
Answer:
Equation: [tex]y=110(0.84)^x[/tex]
(where x is the time in seconds, and y is the sound level in decibels)
Answer: The sound level falls below 30 decibels after 7.452 seconds (3 dp)
Step-by-step explanation:
We can model this as an exponential equation.
General form of an exponential equation: [tex]y=ab^x[/tex]
where:
a is the initial valueb is growth factorx is the independent variabley is the dependent variableIf b > 1 then it is an increasing function
If 0 < b < 1 then it is a decreasing function
If the sound decreases by 16% each second, then the growth (decay) factor will be 100% - 16% = 84% → 0.84
Given:
a = 110 decibelsb = decreases by 16% each second = 0.84x = time (in seconds)y = sound level (in decibels)Substituting these values into the equation:
[tex]\implies y=110(0.84)^x[/tex]
To find how long until the sound level falls below 30 decibels, set y < 30 and solve for x:
[tex]\begin{aligned}110(0.84)^x & < 30\\\\(0.84)^x & < \dfrac{3}{11}\\\\\ln (0.84)^x & < \ln \left(\dfrac{3}{11}\right)\\\\x \ln (0.84) & < \ln \left(\dfrac{3}{11}\right)\\\\x & > \dfrac{\ln \left(\dfrac{3}{11}\right)}{\ln (0.84)}\\\\x & > 7.452008851\end{aligned}[/tex]
Therefore, the sound level falls below 30 decibels after 7.452 seconds (3 dp)
I need help with number three please someday help it’s stats
Answer:
I don't really know but I'm curious haha
Find the values of x,y, and x in a circle
Answer: x=20, y=z=160
Step-by-step explanation:
select the place where the digit 2 sits in this number 428,031
Answer:
The 2 is in the ten thousands place.
Answer:
In this case the number 2 would be located in the tens of thousands.
---
Thank you so much for participate in the community of Brainly.com
I hope help you :)
Kind regards, Antonio.
"Describe the domain and range of y=5(2)"
Answer:
Find the domain by finding where the equation is defined. The range is the set of values that correspond with the domain.
Domain: (−∞,∞), {x|x∈R}
Range: {y|y=10}
(I apologize if this doesnt help)
Please Help Me!!!
The ratio of men to women working for a company is 4 to 3. If there are 161 employees total, how many men work for the company?
Answer:
I dont know
Step-by-step explanation: I hope someone can help you
When was the model rocket 600 feet above the ground? Answers:4.5 seconds. 7 seconds. 7 and 9.5 seconds. 4.5 and 12 seconds.
Answer:
D. 4.5 and 12 seconds
Step-by-step explanation:
Answer:
D
Step-by-step explanation:
It was correct on the quiz
Help picture below problem 23
Answer: 7 hours.
Step-by-step explanation: Randall can assemble 5 race car tracks in an hour and Diggery can assemble 4 race car tracks in an hour. To see how many hours it takes to make 63 race car tracks, you need to add 5 and 4, since Randall and Diggery are working together. Both of them combined can make 9 race car tracks in total every hour. 63 can be divided by 9, which is 7. Therefore, it'll take 7 hours for both of them to make 63 race car tracks.
Let me know if this is right! :)
9. A bag of candy weighs 11 3/4 ounces. You get 1/8 of the bag. What is the weight of your share in ounces?
Answer:12 1/8
Step-by-step explanation:
you add the denomunator in order to get your answer
70 students choose to attend one of three after school activities: football, tennis or running. There are 30 boys. 13 students choose football, of which 9 are girls. 31 students choose tennis. 9 girls choose running. A student is selected at random. What is the probability this student chose running? Give your answer in its simplest form.
Answer:
9/70
Step-by-step explanation:
Given that:
70 students choose to attend one of three after school activities: football, tennis or running.
There are 30 boys. 13 students choose football, of which 9 are girls. 31 students choose tennis. 9 girls choose running.
A student is selected at random.
What is the probability this student chose running?
Since it asking for the probability of this student (randomly select) chose running. And we can see that there are 9 girls choose running.
Therefore, we also know 70 students is the total
Hence, the answer is 9/70
9/70 is in simplest form already.
~lenvy~
Answer:
9/70
Step-by-step explanation:
Important info:
70 students choose to attend one of three after school activities: football, tennis or running.There are 30 boys. 13 students choose football, of which 9 are girls. 31 students choose tennis. 9 girls choose running.A student is selected at random.What is the probability this student chose running?Solution:
Probability of this student (randomly select) chose running. And we can see that there are 9 girls choose running.
Thus, 70 students is the total
Therefore, the answer is 9/70
9/70 can't be simplify.
[RevyBreeze]
The solution of the equation 3(x + 3) = 12 is
Question 5 options:
1
2
3
4
Answer:
x=1
Step-by-step explanation:
1) Distribute 3x+9=12
2) Subtract 9 from both sides 3x=3
3) Divide by three x=1
James and his family spend a morning picking peaches. They fill several bags. This line plot shows the weight of each bag.
How many more pounds does one of the heaviest bags weigh than one of the lightest bags?
The number of pounds that one of the heaviest bag weighs more than one of the lightest bag in the given line plot is: 1½
What is a Line Plot?In a line plot, frequency of a data point is either represented by a dot or a mark.
In the line plot given:
Heaviest bag weighs 5¾
Lightest bag weighs 4¼
The difference between the heaviest and lightest bag = 5¾ - 4¼
= 23/4 - 17/4
= (23 - 17)/4 = 6/4 = 3/2
= 1½
The heaviest bag weighs 1½ pounds than the lightest bag.
Learn more about line plot on:
https://brainly.com/question/27246403
Which of the following is a root of the polynomial function below?
F(x) = x2-3x2+x+5
O A. -2+1
O B. 2
O C. 2+1
O D. 1
Which object would have a measurable volume? A bunch of polaroid pictures. A beach ball. A sheet of loose leaf paper. A checker board.
Help!!
Answer:
its ethier the photo or the beach ball but i dont know which is
Step-by-step explanation:
Answer:A beach ball.
Step-by-step explanation:
Find the product of 40 and
100.
Answer:
4000
Step-by-step explanation:
Product just means multiply!
40 × 100 = 4000
Answer:
4000
Step-by-step explanation:
40 times 100 is 4000
take the 4 and put the amount of 0's in the equation behind it ( there are 3 in total, 2 from the 100 and 1 from the 40): 4000
Reemplaza los valores en las expresiones y resuelve
Substitute values into expressions and solve??
Find the perimeter of the figure below. Show all work for each step. Work should include explanations in words detailing how you simplify each specific radical. Take your time and be thorough. Include units in final answer.
Applying the knowledge of radicals, the perimeter of the given triangle is calculated as: 63√6 cm
What is the Perimeter of a Triangle?To find the perimeter of a triangle, add up the length of all its three sides.
Given the trangle in the image:
Perimeter = 12√54 + 15√6 + 6√24
Simplify each radicals
12√(9 × 6) + 15√6 + 6√(4 × 6)
12 × 3√6 + 15√6 + 6 × 2√6
36√6 + 15√6 + 12√6
Add like radicals together
Perimeter = 63√6 cm
Learn more about perimeter of a triangle on:
https://brainly.com/question/24382052
#SPJ1
What is x? If necessary, round to the nearest tenth (one decimal place):
Answer:
x = 10
Step-by-step explanation:
Both right triangles are similar.
-> Corresponding sides of similar triangles are in proportion.
[tex] \implies \: \frac{x + 6}{16} = \frac{x}{10} \\ \\ \implies \: 10(x + 6) = 16x \\ \\ \implies \: 10x + 60= 16x \\ \\ \implies \: 10x - 16x = - 60 \\ \\ \implies \: - 6x = - 60 \\ \\ \implies \: x = \frac{ - 60}{ - 6} \\ \\ \implies \: x = 10[/tex]
Joyce paid $38.50 for an item at the store that was 65 percent off the original price. What was the original price?
Answer:
25.025
Step-by-step explanation:
x/38.50=65\100 cross multiply and divide by the 100 so now x=Original price=25.025
Work out the area of the shape drawn below.
6 m
Answer:
28.3 m²
Step-by-step explanation:
The formula to find the area of a quadrant: 1/4 x π x r², where r is radius (diameter ÷ 2) and π is 3.14 or 22/7 or 3.142.
1) Substitute the values into the formula.
= 1/4 x 22/7 x 6²
2) Solve it.
= 1/4 x 22/7 x 36
= 1/4 x 113.14
= 28.285
2) Round the answer to one decimal place.
= 28.3
Select all the correct locations on the image. Identify which functions have complex roots by selecting the function names on the provided coordinate plane.
The parabolae b, d and f seen in the real coordinate plane have complex roots.
What is the graphical criterion to determine what second order polynomial has complex roots?
Second order polynomials are algebraic equations of the form:
[tex]y = a\cdot x^{2}+b\cdot x + c[/tex] (1)
Where:
a, b, c - Coefficientsx - Independent variabley - Dependent variableA value of x is a root of the polynomial for y = 0, which can real or complex but not both according to the discriminant of the quadratic formula. If the polynomial has no real roots, then it does not pass through the x-axis in the real coordinate plane.
Therefore, the parabolae b, d and f seen in the real coordinate plane have complex roots. [tex]\blacksquare[/tex]
To learn more on quadratic functions, we kindly invite to check this verified question: https://brainly.com/question/4119540
which weight is greater than 5,000 lbs.
Answer:
6000 lbs is greater then 5000!
Step-by-step explanation:
An account with a $250 balance accrues 2% annually. If no deposits or withdrawals are made, which graph can be used to determine approximately how many years will it take for the balance to be $282?
Answer:
D. Graph 4 In an account with 250$ balance that accrues 2% annually, with no deposits or withdrawals, it takes 6 years and 6 months for the balance to be 282$
Step-by-step explanation:
if the balance accrues 2% annually, then that means every year the amount increases by 100% + 2% = 102%
102%= 102/100 = 1.02
if we multiply the balance in the account with 102% or by 1.02 at the beginning of each year we will get the amount accrued at the end of the year
First year: $250 x 1.02 = $260.1
Second year: 260.1 x 1.02 = $265.302
Third year: 265.302 x 1.02 = $270.60802
we can use these points to create a graph that will help us estimate at what year the amount will be 282$
Answer:
D
Step-by-step explanation:
Find the product. 5(4v + 1)
Answer: 20v+5
Step-by-step explanation:
5(4v+1)
Use the distributive property to multiply 5 by 4v+1.
20v+5
Answer:
20v+5
Step-by-step explanation:
You would multiply using the distributive property
Distributive property formula examples:
AB=BA
A+B=B+A
(AB)C=A(BC)
(A+B)+C=A+(B+C)
A(B+C)=AB+AC
Give the equation of the circle centered at the origin with radius 3.
A right square pyramid is shown. The height of the pyramid is 40 units. The distance from the center of the base of the pyramid to vertex D is 30units, as shown.
Enter the length of segment AD, in units
Answer:
c=a2+b2
use the Pythagorean Theorem
How much would
$550 invested at 9%
interest compounded
annually be worth
after 8 years?
After 8 years the worth would become $1,095.91
How to find the compound interest?If n is the number of times the interest is compounded each year, and 'r' is the rate of compound interest annually, then the final amount after 't' years would be:
[tex]a = p(1 + \dfrac{r}{n})^{nt}[/tex]
We are given that $550 invested at 9% interest compounded annually be worth after 8 years.
[tex]a = p(1 + \dfrac{r}{n})^{nt}[/tex]
a = 550 (1 + 0.09)^8t
a = 550 (1.09)^8t
a =1,095.91
Hence, the worth would be; $1,095.91
Learn more about compound interest here:
https://brainly.com/question/1329401
#SPJ2
estimate 62% of 700 help me please
Answer:
anywhere around 420-450
Step-by-step explanation:
the actual answer is 434, a good estimation would be in that range