Answer:
D on edg
Step-by-step explanation:
Answer:d on ed
Step-by-step explanation:
In the month of June, the temperature in Johannesburg, South Africa, varies over the day in a periodic way that can be modeled approximately by a trigonometric function. The lowest temperature is usually around 3^\circ C3 ∘ C3, degrees, C, and the highest temperature is around 18^\circ C18 ∘ C18, degrees, C. The temperature is typically halfway between the daily high and daily low at both 10\text{ a.M.}10 a.M.10, start text, space, a, point, m, point, end text and 10\text{ p.M.}10 p.M.10, start text, space, p, point, m, point, end text, and the highest temperatures are in the afternoon.
Answer:
The answer is "[tex]\bold{T = - 7.5 \cos \frac{\pi}{12}( t - 4 )+ 10.5}[/tex]"
Step-by-step explanation:
Given value:
Temp-maximum=[tex]18^{\circ}[/tex]
Temp. minimum = [tex]3^{\circ}[/tex]
It is halfway between 10 am and 10 pm to 4 am.
The sinus and cosine roles could be used throughout the year to predict fluctuations in climate models. Its type of formula that can be used to model such information is:
[tex]T = A \cos B(t-C) + D,[/tex] where parameters are A, B , C, D, T is the ° C temperature and t is the time (1-24)
[tex]A = amplitude = \frac{(T_{max} - T_{min})}{2}\\\\[/tex]
[tex]= \frac{(3 - 18)}{2}\\\\= - \frac{15}{2}\\\\ = -7.5[/tex]
[tex]B = \frac{2 \pi}{24}\\\\[/tex]
[tex]= \frac{\pi}{12}[/tex]
[tex]C = \text{ units translated to the right}= 4[/tex]
[tex]D = y_{min} + amplitude = units \ translated \ up\\\\[/tex]
D = 7.5 + 3 = 10.5
Its trigonometric function equation that model temperature T hours after midnight in Johannesburg t.
[tex]T = - 7.5 \cos \frac{\pi}{12}( t - 4 )+ 10.5[/tex]
Answer:
Hope this helps.
Step-by-step explanation:
Use the vertical line test to determine whether or not the graph is a graph of a function.
Which of the following is equivalent to the expression below?
(-k+8)(-2k²-8k-1)
A)2k³-8k²-63k-8
B)2k³-24k²-64k-8
C)-8k^4 +2k³+64k-8
D)-24k^4-2k³-64k²-8
Answer:
A
Step-by-step explanation:
(-k + 8)(-2k² - 8k - 1)
We can use FOIL to solve this.
(-k * -2k²) + (-k * -8k) + (-k * -1) + (8 * -2k²) + (8 * -8k) + (8 * -1)
2k³ + 8k² + k + (-16k²) + (-64k) + (-8)
2k³ - 8k² - 63k - 8
Best of Luck!
If you have a negative slope how do you graph it?
pls help.Solve it pls
Answer: do i solve for a or sum?
Step-by-step explanation:
leila decides to save for 6 years. she opens a saving account with $800. the account pays simple interest at an annual rate of 2%. she doesn’t make any more deposits how much total interest will leila earn?
Answer:
time =T=6 years
principal = P=$800
rate = R= 2%
interest = (P*T*R)/1000
= 800*6*2/100
= 96
Step-by-step explanation:
Each output of a function is 0.25 greater than the corresponding input. Which equation is a rule for
the function?
O y = 0.25x
O y = x/0.25
O y = x +0.25
O y = x - 0.25
Answer:
A. y = x+0.25
Need this ASAP!!!PLLSS HELP!!
The price of a sweater is 40% off the original price of $20.00. What is the new price of the
sweater?
A $14
B $8
C $10
D $12
Answer:
the amount of the shirt is 12 dollars
Step-by-step explanation:
.40×12=12
x =??? ASAPPP plssssssssssss
Answer:
85 becacuse 20×25 = 85 x=85
Sorry but what is “ 6(-5n + 7) “ equal ?
Answer:
-30n+42
Step-by-step explanation:
6(−5n+7)
=(6)(−5n+7)
=(6)(−5n)+(6)(7)
=−30n+42
Answer: − 30 n + 42
Step-by-step explanation:
What is the sum of the first 21 even numbers? FAST!!!
Answer:
462
Step-by-step explanation:
Sum = n/2 x (a + Tn)
= 21/2 x (2 + 42)
= (21 x 44)/ 2
= 924/2
2 + 4 + 6 + 8 + 10 + 12 + . . . . + 42 = 462
Please answer these... please
Answer:
1) y=1/8x+2
2) y=1/35x+100
Step-by-step explanation:
Solve each quadratic equation by completing the square.
6x2 – 28x = - 16
Answer:
There is no real solutionStep-by-step explanation:
[tex]6x^2-28x = - 16\\\\6x^2-28x + 16=0\\\\3x^2-7x+8=0\\\\9x^2-21x+24=0\\\\(3x)^2-2\cdot3x\cdot\frac72+(\frac72)^2-(\frac72)^2+24=0\\\\(3x-\frac72)^2-\frac{49}4+24=0\\\\(3x-\frac72)^2-12\frac{1}4+24=0\\\\(3x-\frac72)^2+12\frac{3}4=0\\\\(3x-\frac72)^2=-12\frac{3}4[/tex]
What is the graph for y=3(x-1)^2
Solve for x: -1 < x + 3 < 5
Answer:
B -4<x<2
Step-by-step explanation:
[tex]-1+-3<x+3+-3<5+-3[/tex]
Add -3 to all parts
and u get [tex]-4<x<2[/tex]
Which property does this show? 4(3 - x) = 12 - 4x
Answer:
Distributive property
Step-by-step explanation:
when you distribute the left sid dit equals the right
Ian measures 9 kg of rice. One kilogram is approximately equal to 2.2 pounds. Which measurement represents the number of pounds of rice?
Answer:
19.8 poundsStep-by-step explanation:
9 kg x 2.2 pounds
1 kg
= 19.8 pounds
Answer:
19.8
Step-by-step explanation:
Given the matrix showing flight times between cities, which of the following statements is true?
The flight time from city 2 to city 4 is 2.1 hours.
The flight time to return from any city is the same as the flight time to fly to that city.
The matrix is square.
Using one or more flights, it is possible to get from any city to any other city.
Answer:
1, 3, and 4
I just did the assignment. Hope this helps!
Answer: yes, 1, 3, and 4
Step-by-step explanation:
there are no 43 people in the cafeteria what is the inequality
Answer:
Step-by-step explanation:
if you have the option, you can say
# of people ≠ 43
What are the angle measures of 1 and 2
This is really confusing can someone help?
Answer:
D.780.8
Step-by-step explanation:
multiply 244 and 3.2 and you get D. hope this helps.
Answer:
B (780 4/5)
Step-by-step explanation:
He’s buying 24 boxes, and each box weighs 3 1/5 pounds. So we need to multiply 24 x 3 1/5, resulting in 780 4/5
So sorry if I’m wrong. Have a good day!
~Louella Marie Smith♥️
Please help!! 13 points, will mark brainliest!! How to calculate [tex]cos (x)=\frac{6}{15}[/tex]?
I'm doing a trig question; trying to find angle XYZ, and I think the formula for the answer is C = [tex]\frac{A}{H}[/tex], which as stated in the title, I think in this situation is [tex]Cos(x)=\frac{6}{15}[/tex].
I don't know what I'm doing wrong, or if I've done the whole question wrong, but no scientific calculators will give me an answer because it says Cos is already defined. I know for sure the answer isn't 0.4, which was a guess I made. The entire question is attached below.
Answer:
66.4°
Step-by-step explanation:
Let ∠XYZ be x°.
Given the adjacent side, XY, and the hypotenuse side,YZ, we use cosine.
[tex] cosθ= \frac{adj}{hyp} \\ cosx° = \frac{6}{15} [/tex]
To find the value of x°, take the inverse of cosine.
[tex] x°\\ = cos^{ - 1} (\frac{6}{15} ) \\ = 66.4° \: (1 \: d.p.)[/tex]
Thus, ∠XYZ= 66.4°
*Given 2 sides, we can find the measure of an angle in a right- angled triangle by taking the inverse of the trigonometry function.
Answer:
0;0;2;9;8;4
Step-by-step explanation:
(2)^(3)
36.481;2.5
-3*(-2/3)-1
8;1;2;9;0;4
0;0;2;9;8;4
How can I solve this? 32 1/4 x 1/8
convert 32 1/4 into an improper fraction
Suzl starts her hike at 300 feet below sea level. When she reaches the end of the
hike, she is still below sea level at -103 feet. What was the change in elevation
from the beginning of Suzi's hike to the end of the hike?
The change was (
feet.
For all the other viewers of this question, the change was -403 feet or you could say 403 feet i guess but the answer is -403 feet
The product of two positive numbers is always greater than either number
The product of two positive numbers is always greater than either number the statement is false.
What are numbers?A numeral system is a way of writing numbers; it's a way of mathematically notating a collection of numbers by utilizing a consistent set of digits or other symbols. In several numeral systems, the same set of symbols may represent various numbers.
Given that the product of two positive numbers is always greater than either number.
To understand this let's take an example take two numbers and multiply them.
2 x 5 = 10
Then take 2 and 0.5 and multiply them.
2 x 0.5 = 1
Here the result of the product is 1 which is less than 2. Therefore, if the product of two positive numbers is always greater than either number the statement is false.
To know more about numbers follow
https://brainly.com/question/7359628
#SPJ2
can ya smart people solove ths
Answer:
[See Below]
Step-by-step explanation:
____________________
✦ Solve:
Divide: [tex]6[/tex] ÷ [tex]2=3[/tex]Add: [tex]1+2=3[/tex]Multiply: [tex]3*3=9[/tex]____________________
So your answer would be:
[tex]\bold9[/tex]____________________
~Hope this helps Mate. If you need anything feel free to message me.
[tex]-Your~ Friendly~ Answerer,~Shane[/tex] ☺
Duncan is excited to begin diving lessons. He starts on the diving board, 5 feet above the surface of the pool. Then, Duncan dives off the board and ends up 7 feet below the surface of the pool. What is the total distance from Duncan's start on the diving board to his lowest point beneath the surface of the pool?
Answer:12
Step-by-step explanation:
Answer:
12
Step-by-step explanation:
a) Calculate the magnitude of the angle a in the diagram above.
b) Find the length of OT
Answer:
angle a = 53.13 degrees and OT = 5cm
Step-by-step explanation:
Tan A = 4/3
A = 53.13
i need help i’m really a bad at math
Answer:
what u need help with?
Step-by-step explanation:
Answer:
the slope is 0.6
Step-by-step explanation: ΔY /ΔX
elise says, "if you subtract 16 from from my number and multiply the difference by -5, the result is -35." what is elise's number?
Answer:
23
Step-by-step explanation:
1. (x-16)-5=-35
2. (x-16)=-35/-5
3. x-16=7
4. x=16+7
5. x=23