Answer:
4 seconds
Step-by-step explanation:
I completed a table, swimmer 1 started with 1.7 while swimmer 2 started with 0. After adding 1.9 to swimmer 1 each time and 2.3 for swimmer 2, swimmer 2 caught up at 4 seconds
☆15 POINTS AND MARKED BRAINLIEST IF CORRECT☆
look at the image above to view the question!
Answer:
3125 bacteria.
Step-by-step explanation:
We can write an exponential function to represent the situation.
We know that the current population is 100,000.
The population doubles each day.
The standard exponential function is given by:
[tex]P(t)=a(r)^t[/tex]
Since our current population is 100,000, a = 100000.
Since our rate is doubling, r = 2.
So:
[tex]P(t)=100000(2)^t[/tex]
We want to find the population five days ago.
So, we can say that t = -5. The negative represent the number of days that has passed.
Therefore:
[tex]\displaystyle P(-5)=100000(2)^{-5} = 100000 \Big( \frac{1}{32}\Big) = 3125 \text{ bacteria}[/tex]
However, we dealing within this context, we really can't have negative days. Although it works in this case, it can cause some confusion. So, let's write a function based on the original population.
We know that the bacterial population had been doubling for 5 days. Let A represent the initial population. So, our function is:
[tex]P(t)=A(2)^t[/tex]
After 5 days, we reach the 100,000 population. So, when t = 5, P(t) = 100000:
[tex]100000=A(2)^5[/tex]
And solving for A, we acquire:
[tex]\displaystyle A=\frac{100000}{2^5}=3125[/tex]
So, our function in terms of the original day is:
[tex]P (t) = 3125 (2)^t[/tex]
So, it becomes apparent that the initial population (or the population 5 days ago) is 3125 bacteria.
Answer:
We can express the question in a exponential function
The current population is 100,000.
The population doubles each day.
The exponential function is given by: P(t)=a(r)^t
The current population is 100,000, a = 100000.
The rate is doubling, r = 2.
P(t)=100000(2)^t
As we know that the bacterial population had been doubling for 5 days. Let A represent the initial population. So, the function is:
P(t)=A(2)^t
After 5 days, the population reaches 100,000. So, when t = 5, P(t) = 100000:
100000=A(2)⁵
Now solving for A, we get
A=(100000)/(2⁵)=3125
So, the function in terms of the original day is:
P (t) = 3125 (2)^t
Hence, the initial population is 3125 bacteria.
3125 is the right answer.Alex has saved $30 and he earns $12 per hour. He wants to have at least $150 in his savings account. How many hours can he work?
Answer: 10
Step-by-step explanation: 120 divided by 12 = 10
heloo i really need help! any helo would he appreciated!
Answer:
The measure of angle DPA is 39°
Step-by-step explanation:
step 1
Find the value of x we know that arc AB+arc BC+arc CD+arc DA=360°
substitute the values
(5x+10)°+(x+1)°+3x°+(3x+25)°=360°
Solve for x
(12x+36)°=360°
12x=360°-36°
x=324°/12=27°
step 2 Find the measure of angle DPA
we know that The measurement of the external angle is the semi-difference of the arcs which comprises
m∠DPA=(1/2)[arc DA-arc BC]
arc DA=3(27)+25=106°
arc BC=27+1=28°
substitute the values
m∠DPA=(1/2)[106°-28°]=39°
Answer:
BC = 50
Step-by-step explanation:
AB and AD are congruent, thus
AB = AD, that is
5x + 10 = 3x + 18 ( subtract 3x from both sides )
2x + 10 = 18 ( subtract 10 from both sides )
2x = 8 ( divide both sides by 2 )
x = 4
Thus
BC = 12x + 2 = 12(4) + 2 = 48 + 2 = 50
Triangle MNP is graphed on a coordinate grid with vertices at M(12, -6), N(3, 3) and P(-6,12). Triangle MNP is dilated by a scale factor of q with the origin as the center of dilation to create triangle M’N’P’. Which ordered pair represents the coordinates of the vertex P’?
A. (12 − q, -6 – q)
B. (-6q, 12q)
C. (3q, 3q)
D. (12q, -6q)
9514 1404 393
Answer:
B. (-6q, 12q)
Step-by-step explanation:
The dilation factor (q) multiplies each of the coordinates:
(x, y) ⇒ (qx, qy)
P(-6, 12) ⇒ P'(-6q, 12q)
Plz, Help! I need it plz plz! Which number line model represents the expression − 2 + (− 7/2)?
Answer:
A is the answer
Step-by-step explanation:
-2 + (-7/2) = -2 + (-3 1/2) = -5 1/2
(A) illustrates this scenario
can you please help me with these two questions? I will give you branleyist if you answer.
1. Discuss the significance of chlorophyll. Explain its role in photosynthesis. Why are plants green?
2. Why are plants essential to life on Earth? Explain the role photosynthesis plays in this. Why do animals need plants?
1. Chlorophyll is the pigment in plats that absorbs light. If plants were not able to absorb light they would not be able to do photosynthesis and they would not be able to survive. Plants are green because green light is the only wavelength not absorbed by the chlorophyll in plants so this is the color o light that gets reflected back to our eyes.
2.Plants are essential to life on Earth because they convert energy from the sun into stored energy which can be used by animals. They are also essential because one of the outputs of photosynthesis is oxygen which is necessary for breathing and sustaining life. Animals need plants because plants produce oxygen and because animals are unable to convert solar energy into usable energy themselves so they need plants to convert solar energy into chemical energy, which is done through the process of photosynthesis. Animals need this so that animals can use the stored energy that is produced by the plants.
I need help in khan academy ASAP!!
Halp me: ´` ) please : ´` > i need halp please : ^ l
Answer:
Halp u
Step-by-step explanation:
Answer:
36 mph
Step-by-step explanation:
432m : 12h＝36mph
3rd answer
Asupra unui corp acţionează două forţe F 1 = F 2 =10 N. Determinaţi si reprezentaţi grafic rezultanta forţelor atunci când: a) forţele au aceeaşi direcţie şi acelaşi sens; b) forţele au aceeaşi direcţie dar sens opus; c) forţele au direcţii perpendiculare
Answer:
how do you translate on here
Step-by-step explanation:
Henry's baseball practice starts at 2:00 pm. It lasts 1 hour and 45 minutes. What time does he get out of baseball practice?
Answer:
3:45 pm
Step-by-step explanation:
..............
how do I solve the problem?
-2(5d-5)=-20?
simplify any fractions
PLEASE HELP
What is 4% of 50% of 5
F. 0.01
G. 0.05
H. 0.10
J. 0.50
K. 1.00
Answer:
J is the answer of the percentage
3(x - 5) - 9x < 2x + 17
Answer:
3x-15-9x<2x+17(Collect like terms)
-6x-15<2x+17
-6x-2x<17+15
-8x<32
x>-4
How many potential phone numbers can be created from the last seven digits (XXX – XXXX) if each digit can be any number 0-9?
100,000
1,000,000
10,000,000
10,000
Answer:
10,000,000
Step-by-step explanation:
Which of the following is a polynomial?
A. (x - 2)(x4 +3)
B. x2 - 1
C. 1 + 2
D. A + x4 + 16 h
Answer:
I'm pretty sure A is the correct answer :)
(x-2)(x^4+3) is a polynomial
Paul buys a package of stickers for 1.50. There are 75 stickers in the package. What is theme unit cost per sticker?
Answer:
The unit cost is: 0.02 $ per sticker
Step-by-step explanation:
Given
Total stickers = 75
The cost of 75 stickers = 1.50 (let say in $)
To determine
The unit cost per sticker
The unit cost per sticker can be calculated by dividing the total cost by the number of total stickers, so
Unit cost = 1.50 / 75
= 0.02 $ per sticker
Therefore, the unit cost is: 0.02 $ per sticker
A rectangular prism has a length of 18 feet, a height of 14 feet, and a width of 2 feet. What is its volume, in cubic feet?
Answer:Right rectangular prism
Solve for volume
V=504ft³
l Length
18
ft
w Width
2
ft
h Height
14
ft
h
l
w
d
l
l
h
w
h
w
Step-by-step explanation:
Answer: 504
Step-by-step explanation:
Will give 20 points and brainiest!
Please help!
Answer:
Straight angle.
Step-by-step explanation:
It is straight because <CED is a 180 degree angle which is straight.
Answer:
Obtuse
Step-by-step explanation:
Seeing that CEA and BED are acute, CEB has to be obtuse.
Ethan’s favorite kind of exercise is running. He runs on a path that is 1.75 miles long. Last week, Ethan ran on the path 6 times. How many miles did Ethan run on the path last week?
Answer:
10.5 miles
Step-by-step explanation:
You multiply the distance with the number of times he ran.
PLS HELP FOR BRIANLIST!!!! There are 8 more students in a math class than in a history class. If the ratio of the students in the math class to the history class students is 9 : 7, how many students are in math class?
Answer:
9-7= 2
8 / 2 = 4
4 X 9 = 36
4 X 7 = 28
36 students in math class
Answer:
36 students in the math class
Step-by-step explanation:
PLS HELP WITH ALGEBRA
Factor these expressions. First find the GCF
1. 4x³+20x²+16x
2. 12x⁴+26x³-16x²
3. 10x²+48x-10
Answer:
1. 4x(x^2+5x+4)
2. 2x^2(6x^2+13x-8)
3. 2(5x^2+24x-5)
Step-by-step explanation:
1.
The common factor between all the monomials is 4x, so we divide each by 4x.
2.
The common factor between all the monomials is 2x^2, so we divide each by 2x^2.
3.
The common factor between all the monomials is 2, so we divide each by 2.
will mark brainless
Ryan, Jessica, and Mark each solved this system of equations. All of their answers are different. Find and explain the mistakes. What is the correct answer?
Answer:
Step-by-step explanation:
y = 3x + 2
6x – 2y = 10
Ryan’s answer:
I solved by adding the equations. The solution is .
y = 3x + 2 → 3x + y = 2
6x – 2y = 10 → 3x – y = 5
6x = 7
x =
6x – 2y = 10 → 6 – 2y = 10
7 – 2y = 10
–2y = –3
y = -
Jesse’s answer:
I used matrices. The solution is .
Mark’s answer:
I graphed the equations. The lines are parallel and do not intersect, so there is no solution.
100 points!! PLEASE HELP
the graph of y= square root x is translated the translation is defined by (x,y) arrow (x-3,y+1) which is the graph of the translated image
it’s not letting me add multiple photos so if you need them i’ll post them
Answer:
See below
Step-by-step explanation:
Parent function:
y = √xTranslation rule:
(x, y) → (x - 3, y + 1)It will translate right 3 units and up 1 unit
The translated function is:
f(x) = [tex]\sqrt{x - 3}[/tex] + 1Graph is attached where dotted blue is parent function and solid red is translated function
[tex]f =(x) = \frac{x}{4} [/tex]
[tex]fg (x) = \frac{1}{2x + 1} [/tex]
Find g(x)
Answer:
g(x) = [tex]\frac{x+3}{x-3}[/tex]
Step-by-step explanation:
From the picture attached,
Given function is,
f(x) = x + 1
We have to find the value of g(x) if the composite function has been given as,
f[g(x)] = g(x) + 1 = [tex]\frac{2x}{(x-3)}[/tex]
g(x) = [tex]\frac{2x}{(x-3)}-1[/tex]
= [tex]\frac{2x-(x-3)}{(x-3)}[/tex]
= [tex]\frac{(x+3)}{(x-3)}[/tex]
Therefore, g(x) = [tex]\frac{x+3}{x-3}[/tex] will be the answer.
evaluet 2-(4-x) when x=-5
please help will mark Brainliest
what is the percent increase in the image
Answer:
155.555555%
4200/2700=1.55555
Step-by-step explanation:
WILL GIVE BRAINLIEST!!! I need this ASAP plz help bowling alley charges $2.00 per game and will
rent a pair of shoes for $1.00 for any number of games. The bowling alley has an earnings goal of $300 for the day. If the bowling alley rents 40 pairs of shoes, how many games will need to be played to reach their goal?
Answer:
30 games
Step-by-step explanation:
Also rate me!!!
Answer:
Around 50 games will have to be played.
Step-by-step explanation:
At store A, apples are $3.99 for 5 apples. At store B, apples are $20 for 10 apples. Which is the better deal?
Answer:
store a
Step-by-step explanation:
at store a you can get 10 apples for 8$
Answer:
Store A
Step-by-step explanation:
In store B 10 apples are $20, you can buy 5 apples for $3.99 so if you buy 10 apples from store A the total will only be $8
b^2 + 13b + 44 = 4
How would I solve by factoring?
I need help ;-; 20 points
Answer:
x=5
Step-by-step explanation:
So first simplify the equation
√5x-6=-1
Add 6 on both sides
√5x=5
now since it being squared with btoh numbers having a 5, x is 5
Answer:
x=5Step-by-step explanation:
[tex] \sqrt{5x} - 6 = - 1[/tex]
[tex] \sqrt{5x} = 5[/tex]
[tex]5x = 25[/tex]
[tex]x = 5[/tex]
