Answer:
[tex]C.3[/tex]
Step-by-step explanation:
[tex]We\ are\ given:\\\frac{3^a*\sqrt{6} }{9*\sqrt{54}}=1\\Hence,\\By\ using\ one\ of\ the\ Laws\ of\ Exponents:[\frac{x^a}{y^a}]=[\frac{x}{y}]^a\\Hence,\\\frac{3^a*\sqrt{6} }{9*\sqrt{54} }=1\\ \frac{3^a}{9}*\frac{\sqrt{6} }{\sqrt{54} } =1\\Hence,\\\frac{3^a}{9}*\sqrt{\frac{6}{54} }=1\\ \frac{3^a}{9}*\sqrt{\frac{1}{9} }=1\\\frac{3^a}{9}*\frac{1}{3}=1\\\\3^a=3*9\\3^a=27\\3^a=3^3\\As\ the\ bases(3)\ is\ equal,\ the\ exponents\ are\ equal\ too.\\Hence,\\a=3[/tex]
The net of a building block is shown below. What is the total surface area of the building block.
Please help me in this math problem
I just need 1 more reason for the black text. Thanks!
Answer:
1: proportion means 2 ratio are equivalent
2: its also known as constant of proportionality
Step-by-step explanation:
give me brainlist pls
add (2x+5) + (3x-7)
plsssssss SBUIAXSBADJASN
help plsss omf this is hard (8th)
Answer:
(-2,5)
Step-by-step explanation:
Answer:
(-2,5)!!!!!!!!!
Step-by-step explanation:
please help my guys plaese
Answer: I think it’s A
Step-by-step explanation:
Not sure though
Answer:its C
Step-by-step explanation:
What are the coordinates of pont P on the coordinate grid below?
Answer:
It would be (-5,3). Hope this helps!
Step-by-step explanation:
Start from zero on the x line and count until you get to the where the P is, then start from zero and count on the Y line till you get to the P.
A mine worker discovers an ore sample containing 500 mg of radioactive material. It is discovered that the radioactive material has a half life of 1 day. Find the amount of radioactive material in the sample at the beginning of the 7th day.
Answer:
7.8125 or 7.8
Step-by-step explanation:
[tex]gm=(1/2)^{n-1}[/tex]
[tex]gm=500 (1/2)^{ 7- 1} \\gm= 500 (1/2)^{6}[/tex]
= 7.8125 or 7.8
The amount of radioactive material in the sample at the beginning of the 7th day is 3.906 milligram.
What is Half life of an Element?Half life of an element is the time taken by a radioactive substance to break down into half the quantity of the initial quantity.
In other words, we can say that it is the time for an element to disintegrate half of it's atoms.
Given that,
Half life of radioactive material is 1 day.
Initial amount of the substance = 500 mg
At the beginning of the first day, there will be 500 / 2 = 250 mg os substance.
Taking the first term as 250 and the common ratio as 1/2, we can consider this as a geometric sequence.
nth term of a geometric sequence = a rⁿ⁻¹, where a is the first term and r is the common ratio.
At the beginning of seventh day,
Amount of radio active substance = 250 (1/2)⁷⁻¹ = 3.90625
Hence the amount at the beginning of seventh day is 3.906.
Learn more about Geometric Sequence here :
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Screen-printing a batch of shirts requires 2 minutes per shirt in addition to 4 minutes of initial set-up time. If it takes 80 minutes to screen-print a batch of shirts, how many shirts are in the batch?
38
4
40
20
38 is the correct answer because 80-4=76 then divide that by 76/2 give you 38
need help plz i show me how to do it plz :)
I WILL MARK BRAINLIEST IF ITS CORRECT
Answer
Step-by-step explanation:
Between 3 and 5 seconds, the elevator was moving at a rate of
Answer:
4 is the answer hope this helps
Evaluate the expression when x=20 and y=4.
8y−x =
Answer:
12
Step-by-step explanation:
You literally have x and y, just plug them into the equation. It will be 8(4)-20=12
Answer:
12
Step-by-step explanation:
Please help me!! Picture attached!!
Answer:
1. 4/3, and 1 & 1/3 2. 1 & 2/3 3. I D K. 4. 3
5. 1
Step-by-step explanation:
1. because 4/3 is the same as 1 & 1/3, they are the same because if you take the 4 and make it a 3, it is 1 whole, and then you put 1/3 at the end, because the is still a left over 1/3. 2. I know this because 2/3 is bigger than 1/3, and 4/3 is equal to 1 & 1/3.
Hope this helped, I am so sorry, I couldn't figure out 3! : (
2/5 divided by 1/4 as a fraction
Answer:
Step-by-step explanation:
2/5 divided by 1/4 is which (2/5)/(1/4) is equal to fraction 8/5
The given statement "2/5 divided by 1/4 as a fraction"
It can be written as in mathematical form as (2/5)/(1/4)
To solve 2/5 divided by 1/4 as a fraction,
Multiply the first fraction by the reciprocal of the second fraction.
The reciprocal of 1/4 is 4/1.
So, we have (2/5) ÷ (1/4) = (2/5) x (4/1).
Multiplying the numerators and denominators gives us
(2x4) / (5x1) = 8/5.
Therefore, 2/5 divided by 1/4 is equal to 8/5.
Learn more about the multiplication visit:
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What is 9 + 10 ____________________________________________
Answer:
21
Step-by-step explanation:
LOL
answer anyone?
help me, please
Answer:
5x2−7x−7
Step-by-step explanation:
Answer:
I'm pretty sure the answer is B) [tex]5x^{2}+x+3[/tex]
Step-by-step explanation:
basically you just combine the like terms, so 6x^2-x^2 is 5x^2 and so on. hope this helps!!!
plssss help me with this thx im not good at math
Solve the equation 3= d+2
Will give brainliest be quick plz
Answer:
d=1
Step-by-step explanation:
Answer:
D=1
Step-by-step explanation:
3-2 =1 1+2=3
WILL GIVE BRAINLY PLZ HELP ASAP
John’s house is 12 miles away from school. He is two-thirds of the way home. How many miles has he walked?
A. 8
B. 16
C. 18
D. 24
Answer:
the answer is 8 miles
Step-by-step explanation:
HELP I NEED RIGHT ANWSER QUICK!!!
Answer:
Make soooo much sense
Step-by-step explanation:
Answer quick and accurately!
Answer:
umm im being rushed...
Step-by-step explanation:
It's the last one (The distance between D and A)
would U like me to explain??
no wait.... it's ether C or D
Answer:
Your answer is
a
Step-by-step explanation:
Please help me tysvm!
Answer:
Your Welcome :)
Step-by-step explanation:
Kiley and her parents traveled to visit her grandmother. They drove 24.3 miles from their house to the airport in hour. At the airport, they exited the car and walked for hour to the waiting area by the gate to board their plane. Their walk covered 1.2 miles. From the waiting area, they walked another 0.1 mile to board the plane. The plane left the gate 45 minutes after they arrived at the waiting area. The plane flew 346 miles in hours. After the plane landed, Kiley and her parents walked for 30 minutes, covering 1.1 miles, before they found a cab. It was a 15-minute cab ride to get to Kiley’s grandmother’s house, which was 12.3 miles away.
Answer the following questions about kileys trip. All questions are written in terms of an average rate. Assume that an average rate includes the time that kiley is at rest.
In this task you will write the ratio of miles to hours for each leg of kileys trip. You will then express the ratio as a decimal number. Next you will find the unit rate in miles per hour for each leg of the trip.
2. At the airport the walk from the car to the waiting area by the gate
Answer:
The answer is 6.41
Step-by-step explanation:
you just add up all the distances and the time then you divide and then you got your answer.
hope i helped you!
Find the equation of the line that is perpendicular to 5x-6y=5, and passes through Point A (-1,1).
Express the equation in standard form.
Based on the context in paragraph 4, fossil refers to _____.
fuol next time put the paraghpt too pls
Step-by-step explanation:
plz help
in this experiment, you will use a track and a toy car to explore the concept of movement. You will measure the time it takes the car to travel certain distances, and then complete some calculations. In the space below, write a scientific question that you will answer by doing this experiment.
Answer:if you need a question you can say “ how far did the toy car move? “
Step-by-step explanation:
What number is 28% of 75?
Answer:
21
Step-by-step explanation:
.28 * 75
Answer:
21 there ya go
Step-by-step explanation:
can i get brainiest?
Figure JKLM is similar to figure PQRS which proportion must be true for these figures
Answer:
D
Step-by-step explanation:
THEY LINE UP
You deposit $575 into a savings account that earns 4.6% interest compounded annually. Find the new balance of the account after 4 years. Round your answer to the neartest cent.
You earned a simple interest of $375 after 30 years. If the account started with $500, what is the rate?
You deposit $575 into a savings account that earns 4.6% interest compounded annually. Find the new balance of the account after 4 years. Round your answer to the neatest cent.