Suppose that another outbreak has been detected. On Sept 1, there were 60 reported cases. A week later, there were 75 reported cases.
If the disease continues spreading exponentially, how many weeks after Sept 1 will 850 cases be expected? Round to the nearest weeks
Answer:
Cases will increase to 850 in half day
Step-by-step explanation:
Given
The number of reported cases increase from 60 to 75 in seven days (week)
rate of increase of cases = 75-60/7 = 15/7
Now, as per the exponential growth equation
[tex]P = P_0 * e^{r*t}[/tex]
Substituting the given values we get
[tex]850 = 60 * e^{\frac{15}{7} * t}\\e^{\frac{15}{7} * t} = 14.167[/tex]
Taking log on both sides we get
15/7 * t = 1.15
t = 1.15 *7/15
t = 0.537 days = half day
Joan works on commission for a furniture store. She gets a base pay of $80 a day plus 4 percent of the value of any merchandise she sells that exceeds a total of $400. Joan wrote the expression 400 + 0.04(t − 80), where t represents her sales total in dollars, to compute the total amount of money that she will make. For sales of $500 Joan calculated that she will make $416.80. Explain Joan's error by completing the correct expression and how much she will make.
Answer:
Total amount earned = $84
Step-by-step explanation:
The correct expression is
Total amount earned = 80 + 4% of (t - 400)
= 80 + 0.04(t - 400)
where,
t = her sales total in dollars
Total amount of money that she will make for sales of $500
Total amount earned = 80 + 0.04(t - 400)
= 80 + 0.04(500 - 400)
= 80 + 0.04(100)
= 80 + 4
= 84
Total amount earned = $84
PLEASE HELP ME
Find the surface area of this box. The length is 5 cm the width is 5 cm and the
height is 5 cm.
Answer:
150cm^2
Step-by-step explanation:
Which unit rate is equivalent to the ratio 12 to 3?
Answer:
[tex]\frac{4}{1}[/tex]
Step-by-step explanation:
You can think of the ratio 12 to 3 as another fraction such as [tex]\frac{12}{3}[/tex].
If you want the denominator (bottom number) to be 1, you can divide 12 by 3 which equals 4.
Your new fraction would be [tex]\frac{4}{1}[/tex].
Find the coordinates of the center and the measure of the diameter for a circle whose equation is (x + 8)2 + (y - 4)2 = 81
Reminder :
( x + a )^2 + ( y + b )^2 = ( R )^2
Center : O = ( - a , - b )
R = radius
_____________________________
( x + 8 )^2 + ( y - 4 )^2 = ( 9 )^2
Center : O = ( - 8 , 4 )
radius = 9
Diameter = 2 × radius = 18
What is 63,998 in expanded form?
Answer:
60,000 3,000 900 90 8
Step-by-step explanation:
Answer:
60,000+3,000+900+90+8
Step-by-step explanation:
I used go ogle
PLEASE THIS IS TIMED I REALLY NEED HELP AND BRAINLIEST!! :(
PLEASE ONLY PUT CORRECT ANSWER!! :)
answers :
10^21
10^42
24^21
24^42
Answer:
It is 24^21 without hesitation
Answer:
Quick 24^21 Go
Step-by-step explanation:
Solve please!! Please hurry this is due today!!
Answer:
X=2 and y=5
Step-by-step explanation:
5=-4+9 True
5=8-3 True
find the range of the following mathematics examination scores 80 65 84 73 90 96
The range is 31
Step-by-step explanation:
The range is the difference between the smallest and highest numbers in a list or set. To find the range, first put all the numbers in order. Then subtract (take away) the lowest number from the highest. The answer gives you the range of the list.
solve the right triangle.
Answer:
b=4√10
Step-by-step explanation:
AB²=AC²+BC²
14²=b²+6²
b²=14²-6²=160
b=√160=4√10
delete my answer
Step-by-step explanation:
Consider the expression 16 - 4 × 3 + 7. Use parentheses to rewrite the
expression so that it equals 11.
Answer:
16 - (4 × 3) + 7
Step-by-step explanation:
I need answer immediately
Answer:
Answer is 1 minute
Step-by-step explanation:
The y-axis shows how many blocks and the the x-axis shows the time. So if he traveled 6 blocks, based on the graph, it took him 1 minute
Solve 7=6+b .
b= _____
Find the volume of the given prism. Round to the nearest tenth if necessary.
Thank you for anyone who knows this
Answer:
Part (a) Vertex = (-3, -1)Part (b) Vertex = (4, 5)Part (c) function 2; max value = 5=====================================================
Explanations:
Part (a)
In this case, the vertex is the highest point, so the vertex of function 1 is (-3, -1)
If the parabola was flipped so that it opened upward, instead of downward, then the vertex would be the lowest point.
----------------------------
Part (b)
We could graph this function to see where the highest or lowest point is, but there's another way we could find the vertex using algebra.
The given equation is in the form y = ax^2 + bx + c where in this case
a = -2b = 16c = -27The a and b values are plugged into the formula below to get
h = -b/(2a)
h = -16/(2*(-2))
h = -16/(-4)
h = 4
This is the x coordinate the vertex since the vertex is (h,k)
To find k, we plug that value of h into the original function to find its corresponding y value.
y = -2x^2 + 16x - 27
y = -2(4)^2 + 16(4) - 27
y = -2(16) + 16(4) - 27
y = -32 + 64 - 27
y = 5
We found that h = 4 leads to k = 5. The vertex is (h,k) = (4, 5)
----------------------------
Part (c)
We'll compare the y values of each vertex
Function 1 has a vertex of (-3, 1)Function 2 has a vertex of (4, 5)The vertex with the larger y value is the winner, so that would be function 2. This parabola reaches a higher peak compared to the other curve.
The max value here is y = 5. In other words, it's the maximum output the function can produce.
If you graphed functions 1 and 2 together on the same xy grid (see below), you'll see that the curve for function 2 reaches a higher peak.
The ratio of tomatoes to red apples is 2: 5. If there are 20 tomatoes,
how many red apples are there?
please I need help I'm not good at ratio
Answer:
50 red apples
Step-by-step explanation:
Ratio: 2:5
Tomatoes: 20
20/2 = 10
5 x 10 = 50
There are 50 apples.
HELP GIVING BRAINLIEST PLEASEEE
use Pythagorean theorem to solve for the missing side in the triangle above
please help me with the step by step
Answer:
stay safe healthy and happy....Step-by-step explanation:
This is the correct answer
Which statement is always true about a regular polygon?
Answer:
All polygons have straight lines
Step-by-step explanation:
Please help!!!! There are 324 students coming.
===============================================================
Explanation:
Assuming there are 324 seats available for the 324 students, this means that 324*5.60 = 1,814.40 dollars is earned in revenue from ticket sales.
Let x be the cost of equipment, lighting, and costumes combined.
The expression 1814.40 - x represents the profit made. It's the amount of money left after the bills are paid, so to speak. Or you could say profit = revenue - cost.
The committee wants $500 remaining, so they want 1814.40 - x to be equal to 500.
Let's solve for x
1814.40 - x = 500
-x = 500-1814.40
-x = -1314.40
x = 1314.40
So if $1,314.40 is spent on equipment, lighting, and costumes combined, then the committee will have $500 left over. If they spend less on those items, then the profit is more than $500. This means that $1,314.40 is the most they can spend.
Someone please help
Answer:
15 cm
Step-by-step explanation:
.....................
the price of a photography machine in RS60000.find the price after inculding13%tax
Answer:
Rs. 67800
Step-by-step explanation:
Price of photograph = 60000 = 100%
Tax = x dollars = 13% of 60000
100% + 13% = 113% = 1.13
Multiply
1.13(60000) = 67800
To check, lets find 13% of 60000 and add to 60000
13% = 0.13
0.13(60000) = 7800
60000 + 7800 = 67800
Units = Rs
Rs. 67800
If my answer is incorrect, pls correct me!
If you like my answer and explanation, mark me as brainliest!
-Chetan K
PLEASE HELP! Pick one answer.
Answer:
c
Step-by-step explanation:
Answer:
C
1 or more includes from the 1st quartile to the rest of the graph, so it is 75%
Find the measure of ZBAC. (The figure is not drawn to scale.)
70
с
A
70
B
140
С
20
D
35
Tyra, Ella, Tran and Ann share equally in the rental of a car. If the total cost of the rental is C dollers which expression represents Tyras share of cost
Answer:
C/4
Step-by-step explanation:
The amount divided by the amount of people will show how much each person owes
PLEASE HELP ME ILL GIVE BRAINLIEST IF ITS RIGHT
Answer:
94.08m
Step-by-step explanation:
Just multiplly each sides dimensions for all 6 sides.
Are the arcs below congruent?
140"
G
B
A
140"
H
A. No, because the arcs do not have the same measure.
B. There is not enough information to determine.
C. Yes, because the arcs have the same measure.
D. No because the.arcs are not oriented the same.
someone helppp mee plss
While both arcs have the same degree measure (140 degrees), we don't have enough information about the radii. If the radius AO is the same length as radius OH, then the arcs are congruent. Otherwise, the arcs aren't congruent.
No, the arcs aren't congruent because the we don't know the size of both the circles, it is possible that one circle would be small and the other would have greater size than the first one, they only have same measure(140°) but not same size.
_______________
P.S- Refer the attachment, you will yourself understand what I'm trying to explain.
Can anyone help me solve a logarithm question?
Answer:
[tex]x=1[/tex]
Step-by-step explanation:
Given equation in the question is,
[tex]\frac{2}{\text{log}_x(xy)}+\frac{2}{\text{log}_x(xy)}+3=5x[/tex]'
Since, [tex]\text{log}_a}(xy)=\frac{\text{log(a)}}{\text{log}(xy)}[/tex]
[tex]\frac{2\text{log}x}{\text{log}(xy)}+\frac{2\text{log}y}{\text{log}(xy)}+3=5x[/tex]
[tex]\frac{2(\text{log}x)+2(\text{log}y)}{\text{log}(xy)}=5x-3[/tex]
[tex]\frac{2[\text{log}(x)+\text{log}(y)]}{\text{log}(xy)}=5x-3[/tex]
[tex]\frac{2\text{log}(xy)}{\text{log}(xy)}=5x-3[/tex]
[tex]2=5x-3[/tex]
[tex]2+3=5x[/tex]
[tex]5x=5[/tex]
[tex]x=1[/tex]
What is the circumference of the following circle?
r = 1
units
Answer:
2 pi or 6.2831853...
Step-by-step explanation:
C=pi 3r
The circumferance of the circle given is 2π units.
What is Area?Area is a collection of two - dimensional points enclosed by a single dimensional line. Mathematically, we can write -
V = ∫∫F(x, y) dx dy
Given is a circle whose radius is equivalent to 1 units.
It is asked to find the circumferance of the circle given in the formula.
We know that the circumferance of the circle is given by the formula -
C = 2πr
Putting the values, we get -
C = 2 x π x 1
C = 2π units
So, it can be concluded that the circumferance of the circle given is 2π units.
Therefore, the circumferance of the circle given is 2π units.
To solve more questions on circle dimensions, visit the link-
https://brainly.com/question/29213222
#SPJ7
Plz help I don't know much about what this question is asking me
Answer:
B
Step-by-step explanation:
You can see that the only difference between the three questions is the charge of the electrons. Electrons are negatively charged and so the answer is just B
Answer:
Pretty sure its A so sorry if its wrong
Step-by-step explanation:
Wish you the best of luck and hope this helps!