Answers
Related Questions
in 1980, wind turbines in Europe generated about 5 gigawatt-hours of energy. Over the next 15 years, the amount of energy increase by about 59% per year.
NOT A MULTIPLE CHOICE
1a. Write a model giving the amount E of energy t years after 1980.
1b. Use your model determine how much wind energy was generated in 1984.
1c. Determine the year when 80 gigawatt-hours of energy were generated.
Answers
9514 1404 393
Answer:
1a. E = 5×1.59^t
1b. 32 GWh
1c. 1986
Step-by-step explanation:
1a. An exponential model looks like
f(t) = a·b^t
where 'a' is the value when t=0, and 'b' is the growth factor in the time period associated with t.
Here, 'a' is 5 (GWh), and 'b' is 1+59% = 1.59. Then the desired model is ...
E = 5·1.59^t . . . . . where t is years after 1980, and E is in GWh.
__
1b. For t=4, we have ...
E = 5·1.59^4 ≈ 31.96 ≈ 32
About 32 GWh was generated in 1984.
__
1c. The value of t for a given value of E is ...
E/5 = 1.59^t . . . . divide by 5
log(E/5) = t·log(1.59) . . . . take logarithms
t = log(E/5)/log(1.59) . . . . divide by the coefficient of t
For E = 80, the years after 1980 are ...
t = log(80/5)/log(1.59) ≈ 5.98
About 80 GWh were generated in 1986.
Complete the statements to find the limit. lim x→3 x2 + 2x − 3 x2 + 4x − 5 = The numerator can be factored as . The denominator can be factored as . The common factor of can be divided out of the numerator and denominator. The limit is .
ANSWERS:
1. C
2. D
3. B
4. A
Answers
Your choices are all correct.
Numerator: x ² + 2x - 3 = (x + 3) (x - 1)
Denominator: x ² + 4x - 5 = (x + 5) (x - 1)
Common factor: x - 1
Then
lim [x → 3] (x ² + 2x - 3) / (x ² + 4x - 5)
= lim [x → 3] (x + 3) / (x + 5)
= (3 + 3) / (3 + 5)
= 6/8 = 3/4
Answer:
ANSWERS:
1. C
2. D
3. B
4. A
Step-by-step explanation:
which one?
9kv
1/2(k+9)(v)
v(k) + 1/2v (9)
v+k+9+9+k
Answers
Answer:
the third one
Step-by-step explanation:
v×k + 1/2v×9
v(k) + 1/2v (9)
Help plzz will mark brainleast
Answers
Answer:
rectangular prism
Step-by-step explanation:
maybeeee
sorry if it wrong :l
The number 36 is 12% of:
Answers
Answer:
36 is 12% of 300.
Step-by-step explanation:
Hopw this helped. Have an Amazing Day, Evening, or Night! : )
The second angle of a triangle is twice as large as the first. The measure of
the third angle is 20 degrees greater than the first. How large are the angles?
Answers
Megan's text messaging plan costs $5 for the first 700 messages and 30¢ for each additional text message. If she owes $63.20 for text messaging in the month of January, how many text messages did she send that month?
Answers
Answer:
Fixed cost $14 -350 messages
variable $ 0.25 each message i think
Step-by-step explanation:
58.20/.30=194
So she sent 700+194 for a total of 894 texts
“Snoqualmie” is a name shared by a waterfall and a tribe of Native Americans. In a study of the cultural importance of the waterfall, two groups of the Snoqualmie tribe were randomly surveyed. One group consisted of Snoqualmie members living less than 25 miles from the waterfall. Another group consisted of Snoqualmie members living more than 25 miles from the waterfall. The researchers asked each member to rate the cultural importance of the waterfall as low, medium, or high. Data from the study are presented in the following table.
Answers
Answer: E ( (17)(50)/88 )
Step-by-step explanation:
(Row total * column total) / table total
184 is what percent more than 148
Answers
9514 1404 393
Answer:
24.3%
Step-by-step explanation:
The percent change can be calculated as ...
pct change = ((new value)/(old value) -1) × 100%
= (184/148 -1) × 100%
= (1.243243... -1) × 100% ≈ 24.3%
184 is about 24.3% more than 148.
PLZ HELP 20 POINTS AND CHOOSING BRAINLIEST
Answers
what is the equation of the line?
Answers
Answer:
it is D ithought sinse for x=0 y=0 and for x=4 y=-2 (-1/2 x4 =-2 )and others didnot give correct nbs
What is the slope of the line that passes through the points (-2,-3), and (5, 4)?
a. 3
b. -1
c. 1
d. -3
Answers
Answer:
I believe its A
Step-by-step explanation:
A. 3
Hope this helps
Please help meeeeeeeeeeeeeeeee
Answers
Answer:
1436.8 in³
Step-by-step explanation:
Volume of sphere = (4/3)πr³
r = 7
---> (4/3)π(7)³ = 1436.8 in³
Have a great day :)
Answer:
The volume of the sphere is A.
A culture of bacteria has an initial population of 54000 bacteria and doubles every 7 hours. Using the formula P_t = P_0\cdot 2^{\frac{t}{d}}P t =P 0 ⋅2 d t , where P_tP t is the population after t hours, P_0P 0 is the initial population, t is the time in hours and d is the doubling time, what is the population of bacteria in the culture after 8 hours, to the nearest whole number?
Answers
Answer:
P
t
=119241.6675≈119242
Step-by-step explanation:
The soccer team played a total of twenty-four games and won four more games than they lost. What was the team's win-loss record for the season ? wins _____. Losses _____.
Answers
Answer:
Wins _16____. Losses _12____.
Step-by-step explanation:
Since they played 24 games, the wins and losses must add to 24.
Wins losses
24 0
23 1
22 2
21 3
20 4
19 5
18 6
17 7
16 8
15 9
14 10
13 11
12 12
11 13
10 14
9 15
They won 4 more than they lost is 16 W and 12 L.
Dan made 8 out of 10 free throws. What is the experimental probability that he will not make his next free throw? What is the theoretical probability of not making a free throw?
Answers
Answer:
8/10--> 2/10 20 % scnahce of not makin git
Step-by-step explanation:
Jason can buy a bag of dog food for $25 at two different stores. One store offers 6% cash back on the purchase plus $5 off his next purchase. The other store offers 20% cash back.
(a)
Calculate the total savings from the first store, including the savings on the next purchase.
$
(b)
Calculate the total savings from the second store
Answers
Answer:
Total saving from First Store = $ 1.5 + $ 5 = $ 6.5
Total saving from Second Store = $ 5
Step-by-step explanation:
Given - Jason can buy a bag of dog food for $25 at two different stores. One store offers 6% cash back on the purchase plus $5 off his next purchase. The other store offers 20% cash back.
To find - (a) Calculate the total savings from the first store, including the savings on the next purchase.
(b) Calculate the total savings from the second store.
Proof -
Given that,
Total cashback Jason get from First Store = 25×6% = 25×0.06 = $ 1.5
So,
Total saving from First Store = $ 1.5 + $ 5 = $ 6.5
Now,
Total cashback Jason get from Second Store = 25×20% = 25×0.20 = $ 5
So,
Total saving from Second Store = $ 5
I need to increase the numbers of customers I talk to daily by 20% how many customers do I need to talk to if I talk to a average of 8 customers per hour during an 8 hour shift
Answers
Answer:
77 approx
Step-by-step explanation:
Given data
Number of customers talked to per hour= 8
Hence for 8 hours(a day) the number of customers talked to = 8*8= 64
We want to first find 20% of 64
=20/100*64
=0.2*64
=12.8
Hence the number of customers will be
=12.8+64
=76.8
=77 approx
HELP NOW QUICKKK PLZZZZ ITS TIMED WILL GIVE BRAINLYIST
Answers
Answer:
480. Since each one is 120 and there are 4 of them then its 120*4
Step-by-step explanation:
What is the measure of
162
A. 324°
B. 162°
O C. 81°
D. 72°
Answers
Answer:
81
Step-by-step explanation:
trust me its correct
Answer:
C. 81
Step-by-step explanation:
Just took the test the person is correct
...........................
Answers
Answer:
.. .. .. .. .. .... . ..
Step-by-step explanation:
... .... .. .. ..
You invest $1000 in an accound that pays 7.9% interest, compounded monthly. How much money is in the account at the end of three years?
Answers
Answer:I hope the following example will help you
Step-by-step explanation:
Ex1: If $1000 is invested now with simple interest of 8% per year. Find the new amount after two years.
P = $1000, t = 2 years, r = 0.08.
A = 1000(1+0.08(2)) = 1000(1.16) = 1160
The answer should be 1,266.46
How many solutions will the equation have?
| x – 2| = 6
Answers
Answer:
2
Step-by-step explanation:
Answer:
2 solutions I believe. 2 different x values.
someone please answer this correctly!!!
Answers
Answer:
25 and 36
Step-by-step explanation:
5×5 < 35 < 6×6
25 < 35 < 36
I hope it helps you. If it helps don't forget to like and mark me
Write in slope form : -5x+15y=-30
Answers
Answer:
hope this helps
Step-by-step explanation:
y=1/3x-2 is the slope form of -5x+15y=-30.
What is straight line?a line is an infinitely long object with no width, depth, or curvature.
The given equation is -5x+15y=-30
minus five x plus fifteen y equal to minus thirty.
The standard form or slope form of a line is
y=mx+c
Where m is the slope and c is y intercept.
We need to convert -5x+15y=-30 to standard form or slope intercept form of a line.
-5x+15y=-30
15y=-30+5x
15y=5x-30
Divide both sides by 15
y=5/15 x-30/15
y=1/3x-2
Hence y=1/3x-2 is the slope form of -5x+15y=-30.
To learn more on straight line click:
https://brainly.com/question/20492082
#SPJ2
William spent 35% of his money and was left with $71.50. How much did he have at first.
Answers
Answer:
$204.29
Step-by-step explanation:
Ratios:
[tex]\frac{35}{100} =\frac{71.5}{x} \\\\35x=7150\\x=204.29[/tex]
Double check:
204.29(0.35) = 71.50
Constance has an apple that weighs 85,000 milligrams and a peach that weighs 0.15 kilograms. Which fruit has the greater mass? Choose the words and numbers to complete the statements. Convert the masses of both fruits to the same unit.
Answers
Answer:
The peach will way more then the apple
Hope this helps you ☜(ﾟヮﾟ☜)
The weight of the peach is greater than the weight of apple
What is unit conversion?In order to translate measurements of a particular amount between different units, a mathematical conversion factor is usually used. This modifies the measurement of the quantity without altering its effects.
The particular circumstances or the intended result control the conversion process. This may be governed by law, a contract, a list of technical specifications, or other publicly available standards.
A precise conversion from one system to another is necessary for some measures in order to maintain the precision of both the original measurement and the conversion.
Based on the connection between a particular pair of original units and a particular pair of target units, each conversion factor is chosen.
Given data ,
Let the weight of apple be = 85,000 milligrams
And , let the weight of the peach be = 0.15 grams
Now , from the unit conversion
1 gram = 1000 milligrams
And , 1 kilogram = 1000 grams
So , the weight of apple A = 85 grams
And , the weight of the peach P = 150 grams
Therefore , P > A
Hence , weight of peach is larger
To learn more about unit conversion click :
https://brainly.com/question/19420601
#SPJ3
Is the sequence arithmetic? If so, identify the common difference.
13, 20, 27. 34, ...
Answers
Answer:
the common difference is = 7
Step-by-step explanation:
1st term is 13
2nd term is 20
d = 2nd -1st
d= 20-13
d= 7
Answer:
Yes . It is arithmetic & the common difference of them is 7 .
Step-by-step explanation:
Hope this helps ;)
please help me out, god bless you. dont answer with a link or just steal points plz, I really need help
Answers
Answer:
x = 12 radical 2 ithink these is ansewer
If the sum of six consecutive odd integers is 252, what is the smallest of the six integers?
Answers
Answer:
37 smallest number
Step-by-step explanation:
If your integer is x
The next 5 odd integers are:
x+2
x+4
x+6
x+8
x+10
x+x+2+x+4+x+6+x+8+x+10=252
6x+30=252
6x=252-30
6x=222
x=222/6
x=37