Answers
Answer:
B
Step-by-step explanation:
Related Questions
6. The number of bacteria N in a culture is given by the model N(t) = 250e 0.0156 where t is the time in hours.
Find how many hours it takes for the original population to double. Round your answer to the nearest hundredth
of an hour.
i just need to know how to work this out!! please help
Answers
Answer:
t ≈ 44.43 hours
Step-by-step explanation:
Expression that models the population of a bacteria after time 't' is,
N(t) = [tex]250(e^{0.0156t})[/tex]
Here initial population = 250
And N(t) = Population after 't' hours
t = duration
We have to find the duration in which bacterial population gets doubled.
N(t) = 2×250 = 500
From the given expression,
500 = [tex]250(e^{0.0156t})[/tex]
[tex]e^{0.0156t}=2[/tex]
[tex]\text{ln}(e^{0.0156t})=\text{ln}(2)[/tex]
0.0156t[ln(e)] = 0.693147
0.0156t = 0.693147
t = [tex]\frac{0.693147}{0.0156}[/tex]
t = 44.432
t ≈ 44.43 hours
Find the value of y when x = -2 if y = -4x - 5
A) 3
B) -5
C) -2
D) 9
Answers
Step-by-step explanation:
(−4)(−2)−5 =8−5 =318.5 ft, 6 ft, 17.5 ft
Answers
Answer:
yes, it is a right triangle.
Step-by-step explanation:
you could use the pythagorean theory to check:
[tex]a^{2} + b^{2} = c^{2}[/tex]
(the hypotenuse is the longest side)
[tex]17.5^{2} + 6^{2} = 18.5^{2}[/tex]
[tex]306.25 + 36 = 342.25[/tex]
[tex]342.25 = 342.25[/tex]
It takes 32 minutes to bike 8 miles on the trail. How long would it take to
bike 2 miles? Help please!!!!
Answers
Answer:
8 minutes cause 32/8 = 4 then 4 x 2 = 8
Step-by-step explanation:
Which expressions are equivalent to (5g+3g+4)x2
Answers
What is half of one inch?
Answers
Answer: Half of a half an inch is a quarter of an inch. Which is more, 24 inches or 1 yard? Hope this helps can u give me brainliest
Step-by-step explanation:
Answer:
the half of one inch is 1.27cm
Someone help me please
Answers
Answer:
I need points so sorry i can't answer it :(
Step-by-step explanation:
12.) A jacket cost 4 times as much as a pair of shorts.
Together they cost $75. How much is each item?
Answers
Answer:
The pants cost $15 and the jacket costs $60
Step-by-step explanation:
Find the distance between each pair of points. simply the radicals no decimals (-12, 3) (-3, 15)
Answers
Answer:
15
Step-by-step explanation:
distance formula = square root of difference of y-values subtracted by difference of x-values
d = [tex]\sqrt{144+81}[/tex] = 15
Answer:
Step-by-step explanation:
d^2=dx^2+dy^2
d^2=(-3+12)^2+(15-3)^2
d^2=81+144
d^2=225
d=15
Write an expression to represent the perimeter of a triangle with the side lengths of 12, g-16, and 4g
Answers
Answer:
5g-14
Step-by-step explanation:
Perimeter=12+g-26+4g=5g-14
Answer:
5g-4
Step-by-step explanation:
Artie
25%
Len
20%
Wen
30%
Gina
25%
Artie, Len, Gina, and Wen divided a carton of baseball cards as shown in the circle graph above. If Wen's
share was 60 cards, what was Gina's share of the cards?
25
50
100
200
Answers
Answer:
50
Step-by-step explanation:
Wen: 30% of the total number of cards = 60 cards
Set this up as an equation
30/100 = 60/x
Cross multiply
30 × x = 100 × 60
30x = 6000
Divide both sides by 30 to isolate the variable
x = 200
There are 200 cards total
Gina: 25% of the total 200 cards
Set this up as an equation
25/100 = x/200
Cross multiply
25 × 200 = 100 × x
5000 = 100x
Divide both sides by 100 to isolate the variable
50 = x
Gina's share is 50 cards
Find the measure of ∠X
2 problems only and please show work and explain how you got the answer so that way I can understand what you're doing and how to solve the other problems on my work sheet.
Answers
Answer:
7) 65°8) 25°Step-by-step explanation:
Question 7
Angle formed by 2 chords is half of the sum of the intercepted arcs
x = 1/2(72° + 58°) = 1/2(130°) = 65°Question 8
Angle formed by 2 secants is half of the difference of the intercepted arcs
x = 1/2(360° - (130° + 98° + 41°) - 41°) = 1/2(50°) = 25°Complete the number sentence to solve. Enter the answer in simplest form. Four students share 6 granola bars equally. How many granola bars does each student get? 6 ÷ = Each student's share is granola bars.
Answers
Answer:
1.5 bars of granola per student
Step-by-step explanation:
Number of students = 4
Number of granola bars = 6
Four students share 6 granola bars equally.
Each student gets = 6 ÷ 4
= 1 1/2
= 1.5 bars of granola per student
Each student's share is 1.5 granola bars.
A package of juice boxes contains 6 boxes. The total number of individual
juice boxes b is equal to 6 times the number of packages of juice boxes p.
b.
The independent variable is
p.
Answers
Answer:
P
Step-by-step explanation:
Answer:
P is the independant variable.
Step-by-step explanation:
Since B is dependent on P, being B=P6, P is the independent variable.
1. What is the prime factorization of 402? *
Your answer
Answers
Answer:
Step-by-step explanation:
Prime factorization requires dividing by primes starting with smallest prime number
402/2=201
201/3=67, 67 is prime so we cannot go further so the prime factorization of 402 is
2X3X67
Design An art class is making a mural for their school which has a triangle drawn in the middle. The
length of the bottom of the triangle is x. Another side is 13 more than two times the length of the
bottom of the triangle. The last side is 10 more than the bottom of the triangle. Write and simplify an
expression for the perimeter of the triangle.
What is the expression for the perimeter of the triangle?
Answers
Answer: [tex]4x+23[/tex]
Step-by-step explanation:
Given
The length of the bottom of the triangle is x
Another side is [tex]2x+13[/tex]
The last side is [tex]x+10[/tex]
Perimeter is the sum of the side of triangles
[tex]\Rightarrow \text{Perimeter}=x+2x+13+x+10\\\Rightarrow \text{Perimeter}=4x+23[/tex]
a shopkeeper mixed 15.25 kg of hazelnuts with 4.75 kg of raisins. He packed the mixture equally into 5 boxes. What is the weight of each box?
Answers
Answer:
4kg
15.25 + 4.75 = 20
20/5 = 4
Step-by-step explanation:
Answer:
4 kgs
thats the sum by 5
hope it helps
pls help me with this. will make u brainliest
Answers
According to the table,
it should be (5,9) and (8,10.5)
Which of the following is not a Unit fraction.
Answers
Answer:
7/16
Step-by-step explanation:
unit fractions have 1 as their numerator.
1/5 times 8 =? help please asap
Answers
Answer:
8/5 aka 1.6
Step-by-step explanation:
I'm awarding 20 points for an answer!
A ball is thrown into the air with an initial upward velocity of 48 ft/s. It height h in feet after t seconds is given by the function h (t)=-16t^2+48t+4.
In how many seconds will the ball reach its maximum height?
Answers
Answer:
Step-by-step explanation:
h(t)=-16t^2+48t+4
dh/dt=-32t+48
d2h/dt2=-32
Since acceleration is always negative when the velocity, dh/dt=0, it will occur at the maximum height.
dh/dt=0 when
-32t+48=0
-32t=-48
t=1.5 seconds
Without calculus, the vertex of a parabola will be at -b/(2a) of the quadratic equation. In this case
-48/(2(-16))
-48/-32
1.5 seconds
Please help!!! I will mark you brainiest!
Find the exact value of [[23]]
Answers
Answer:
16 is your Correct answer. Thanks.
Joe is trying to solve the equation for x
3x – 7 = 30
What would be the best first step Joe could Make to solve the equation?
A. Divide 3X by 3
B. Divide both sides by 30
C. Subtract 7 from the left side of the equation
D. Add 7 to both sides of the equation
Answers
Answer:
Step-by-step explanation:
D Add 7 to both sides
This makes it 3x=37
x=37/3
9) help me pls I have the ANSWERS I just need to show the WORK
How would you “find “x” in the diagram?
Answer: D
Answers
9514 1404 393
Explanation:
We have to assume the triangle is a right triangle.
In a 30°-60°-90° right triangle the side lengths have the ratio ...
short side : long side = 1 : √3
This lets you write the proportion ...
x/15 = 1/√3
Multiplying by 15 gives ...
x = 15/√3 . . . . . . matching choice D
__
There are other ways to get there. One of them is ...
x = 15·tan(30°) = 15/√3
PLEASE HELP ASAP WILL MARK BRAINLIEST
Answers
Answer this question to get marked at brainliest!!!!
Answers
43+90
=133
180-133=47
Answer:
The most feasible answer would be the first option - 47
Step-by-step explanation:
This is true because if we look at the triangle it looks as if the sides have equal length, but if we look closely we will notice that the b side is angled more by a slight inch, compared to the other side, thus your answer should be 47 - the first option
please help what does QPR equal?
Answers
Answer:
<QPR=25
Step-by-step explanation:
(8x+7)+(9x+16)=40
17x+23=40
17x=17
x=1
9x+16
25
<QPR=25
Find the solution set of the inequality: 8x+2 > 348x+2>34
Answers
Answer:
21
Step-by-step explanation:
y Varies directly as the product of M and N and inversely as their
Sum. if y = 4, when N=2 and m= 1, What is the value of y when M=6
and N=5.
Answers
Answer:
60
Step-by-step explanation:
i think its the answer because 2(5×6)
You are applying for a fuel tax rebate. The amount of fuel road tax is 32 cents per gallon. If the refund is 50 % of this amount, what is the refund for 8,000 gallons of fuel?
Answers
Answer: $1,280
Step-by-step explanation:
The refund one a gallon is 50% of the cost of the gallon which is $0.32.
The refund on a gallon is:
= 50% * 0.32
= $0.16
If it was for 8,000 gallons the refund would be:
= 8,000 * 0.16
= $1,280