I have class in a half an hour and I still haven't solved all of the hw questions... please help guys I'll give 90 points and brainliest for the first correct answer with brief explanation: thank you SOOOOOOOOOO much!Given: E, F, Q, D∈k(O),O ∈ ED, m∠DFQ = 10°, measure of arc EF = 28° Find: Angles of △EFQ
Answers
Answer:
Angles of △EFQ:
m<EFQ = 100°
m<EQF = 14°
m<FEQ = 66°
Step-by-step explanation:
ED is the diameter of the circle O
so m<EFD = 1/2 (180) = 90°
Given m∠DFQ = 10°
△EFQ
m<EFQ = m<EFD + m∠DFQ = 10° + 90° = 100°
arc EF = 28°,
so m<EQF = 1/2 (28) = 14°
m<FEQ = 180 - ( 100° + 14°) = 66°
Answer:
m<EFQ = 100°
m<EQF = 14°
m<FEQ = 66°
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Which of the choices below best describes the domain and range of this problem. Domain would be tickets sold and range would be amount of money he collected. Elijah has already sold $40 worth of tickets for a local raffle. He has 5 tickets left to sell at $5 per ticket.
: Resolver el sistema de ecuaciones por el método de reducción. -x + 3y = 6 x + y = 2
Answers
❅ Lets lookat it like this: Y is 12% of 40
❅ We are going to do y=12%*40
❅ Now convert the answer you get into a decimal.
❅ 12%/100 = 0.12
❅ Now once again, solve: 0.12 * 40
❅ and then you get 4.8
❅4.8 is 12% of 40.
Now to get the number of percent
Divide: 12/40=.3
And you get: .3=30%
So Carla was 30% of her emails.
And 4.8 is 12% of 40.
❅Hope this helps!❅
12/40=.3
.3=30%
30% of the emails were from Cara
Answers
Answer:
To find the number of boards that must be sold to break even, we need to set the revenue equal to the cost and solve for x.
Given:
Revenue R = 40x
Cost C = 30x + 1000
Since the break-even point is when revenue equals cost, we have the equation:
40x = 30x + 1000
To solve for x, we subtract 30x from both sides of the equation:
40x - 30x = 30x + 1000 - 30x
Simplifying:
10x = 1000
Dividing both sides by 10:
x = 100
Therefore, to break even, 100 computer boards must be sold.
To find the amount of money needed to produce the break-even number of boards, we substitute the value of x into the cost equation:
C = 30x + 1000
C = 30 * 100 + 1000
C = 3000 + 1000
C = 4000
Therefore, $4000 is needed to produce the break-even number of boards.
Step-by-step explanation:
Answers
Answer: 8
Step-by-step explanation:
2/3 divided by 1/12
2/3 * 12/1
24/3=8
hope i helped angel!
Answer:
I think it would be 8
Step-by-step explanation:
Divide 2/3 by 1/12.
(2/3) / (1/12) = 2/3 * 12/1 = 24/3 = 8
Answers
Answer:
Carbon-14 will take 19,035 years to decay to 10 percent.
Step-by-step explanation:
Exponential Decay Function
A radioactive half-life refers to the amount of time it takes for half of the original isotope to decay.
An exponential decay can be described by the following formula:
Where:
No = The quantity of the substance that will decay.
N(t) = The quantity that still remains and has not yet decayed after a time t
= The decay constant.
One important parameter related to radioactive decay is the half-life:
If we know the value of the half-life, we can calculate the decay constant:
Carbon-14 has a half-life of 5,730 years, thus:
The equation of the remaining quantity of Carbon-14 is:
We need to calculate the time required for the original amout to reach 10%, thus N(t)=0.10No
Simplifying:
Taking logarithms:
Solving for t:
Carbon-14 will take 19,035 years to decay to 10 percent.
Approximately 23,083 years will pass for carbon-14 to decay to 10 percent of its original amount.
To find out how long it will take for carbon-14 to decay to 10 percent of its original amount, we can use the concept of exponential decay. The formula for calculating the amount of a radioactive substance remaining after a certain time can be expressed as:
A(t) = A₀ * (1/2)ˣ/ₓ₂
Where:
A(t) is the amount of carbon-14 at time t
A₀ is the initial amount of carbon-14
t₁/₂ is the half-life of carbon-14 (5,730 years)
t is the time we want to find (in years)
We want to find t when A(t) is equal to 0.10 * A₀ (10 percent of the original amount). So, the equation becomes:
0.10 * A₀ = A₀ * (1/2)ˣ/₅₇₃₀
Now, we can cancel out A₀ on both sides of the equation:
0.10 = (1/2)ˣ/₅₇₃₀
To isolate t, we can take the logarithm of both sides (base 2) since the half-life is used in the equation:
log₂(0.10) = t / 5730
Now, we can solve for t:
t = 5730 * log₂(0.10)
To know more about decay here
#SPJ3
Answers
Answer:
5
Step-by-step explanation:
let the consecutive odd numbers be n and n + 2 , then
n(n + 2) = n² + 10 , that is
n² + 2n = n² + 10 ( subtract n² from both sides )
2n = 10 ( divide both sides by 2 )
n = 5
That is the smaller number is 5
…, 1/4, 1/2, 1, 2,…
…, 1/72, 1/36,1/18, 1/9, …
…, 8, 4, 2, 1, …