Answers
Answer:
1) 2^9 = 512
2) 2^(3t) = 2^6 for t=2
Step-by-step explanation:
1) An exponent is used to signify repeated multiplication. Here, the factor 2 is repeated 9 times, so the expression can be written using an exponent as ...
2^9
Using any of a variety of means, the value of this expression can be found to be ...
2^9 = 512
__
2) Assuming the bacteria reproduce by multiplying by some factor in a given time, we can divide the original expression into 3 parts:
(2×2×2) × (2×2×2) × (2×2×2)
If this represents the number after 3 hours, then the number after 2 hours is expected to be ...
(2×2×2) × (2×2×2) = 2^6
That is, there will be (2 h)/(3 h) = 2/3 times as many multiplications by a factor of 2. (2/3)(9) = 6 will be the exponent for the number after 2 hours.
2. as you can split up the fact in 3 hours it is 2^9 to find out one hour (divide by 3) which is 2^3 so we would just multiply it by 2 which equals 2^6
Related Questions
Question about finding intercepts from a table. Hope someone can answer!
Answers
Now if you are familiar with the equation of a line in slope intercept form, it will look like this: y=mx+b. Here the ‘m’ is the slope and the ‘b’ is your y-intercept. What you need to do is use any two points given from the table and find the slope. To do that follow the steps below:
1. Pick two points. Let’s take the first two.
(-28, -54) And (-21, -40)
2. Subtract the two y values, -40 - (-54) = 14
3. Subtract the two x values, -21 - (-28) = 7
4. Now take your answer from step 2 and divide it by your answer in step 3. This will be 14/7, which will be 2.
Your answer from step 4 is your slope, or ‘m’.
(That series of steps was basically change in y over change in x, you can look that up if you are still confused)
Now that you know m, your incomplete equation will be this:
y=2x+b.
Next you will pick any point from the table again, and replace it with x and y in the equation. Let’s pick the second point, (-21,-40)
Plug this in: -40 = 2(-21) + b
Solve for b and you will get your answer.
-40 = -42 + b
b=2
Your answer is 2, that is the y intercept.
(The full equation of the line from that table would be y=2x+2)
Hope this helps!
point into x and y and the b you will get is
your y-intercept.
Now if you are familiar with the equation of
a line in slope intercept form, it will look
like this: y=mx+b. Here the 'm' is the slope
and the 'b' is your y-intercept. What you
need to do is use any two points given
from the table and find the slope. To do
that follow the steps below:
1. Pick two points. Let's take the first two.
(-28, -54) And (-21, -40)
2. Subtract the two y values, -40 - (-54)
14
3. Subtract the two x values, -21 - (-28) :
7
4. Now take your answer from step 2 and
divide it by your answer in step 3. This will
be 14/7. which will be 2.
Your answer from step 4 is your slope, or
- 1/9x+2.4=6 what is x
Answers
-1/9x+2.4-2.4=6-2.4
Then we’re going to simplify
-1/9x=3.6
Then multiply both sides by -9
(-1/9x) (-9) =3.6 (-9)
Then you just Gotta simplify
U get
X=-32.4
What is the y-intercept of the line shown? (4 points)
A. 0
B. 1
C. 3
D. 3.5
Answers
Answer:
The answer is where on the y-axis (vertical probably bold axis) the line passes through. If it goes through the center of the graph the answer is 0.
Can't really help more than that with the given information.
Describe how to determine if a number is a solution to an equation.
Answers
Step-by-step explanation:
Determine whether a number is a solution to an equation.
Substitute the number for the variable in the equation.
Simplify the expressions on both sides of the equation.
Determine whether the resulting equation is true. If it is true, the number is a solution. If it is not true, the number is not a solution.
Hoped that helped:P
Simplify the expressions on both sides of the equation.
Determine whether the resulting equation is true. If it is true, the number is a solution. If it is not true, the number is not a solution.
Here u go happy holidays
PLEAS HELP
Item 5
A scuba diver descends in the water at a rate of 2312 feet per minute for 2.6 minutes. He immediately changes course when he sees a large fish and ascends at a rate of 28 feet per minute for 2 minutes.
What is the scuba diver's position relative to sea level after the 4.6 minutes?
Enter your answer as a decimal in the box.
ft
Answers
2312 FPM for 2.6 minutes
2312 x 2.6 = 6011.2
28 FPM for 2 minutes
28 x 2 = 56
6011.2 descend
55 ascend
0-6011.2 = -6011.2
ans + 56 = -5955.2
:)
Subtract . What is the difference in lowest terms?
One-half
Four-eighths
Three-fourths
Six-eighths
Answers
5/8 - 1/8
4/8
1/2
Hope this helps! :)
5/8-1/8=4/8, we know this because when subtracting fractions with the same denominator, you keep the denominators the same and subtract the numerators. 5-1=4. this gives you 4/8. now, we know 4 is half of 8, so this is equal to 1/2, but we also can divide both 4 and 8 by 4, giving us 1/2.
Point U on a graph is located at (4,8), Point V on the same graph is located at (12, 14).
Which point lies on Line UV?
A. ( 7 , 12 )
B. ( 10 , 14 )
C. ( 16 , 22 )
D. ( 20 , 20 )
Answers
Answer:
D
Step-by-step explanation:
gradient is change in y/change in x
gradient of UV = 14-8/12+4=3/4
use equation y=mx+c where y is the y coordinate, m is the gradient, x is the x coordinate and c is the y intercept
use one of the coordinates of U or V, I'll use (4,8)
[tex]y = mx + c[/tex]
[tex]8 = \frac{3}{4} (4) + c[/tex]
[tex] 8 = 3 + c[/tex]
c is 5
the equation for UV is
[tex]y = \frac{3}{4} x + 5[/tex]
insert each X coordinate given in the question to see if it gives the same y coordinate
when x is 20, y is also 20 so the answer is D
1/7 of ___ is 1/35
help me plz :)
Answers
Explanation: 1/35 divided by 1/7= 1/5. 1/7 of/x 1/5= 1/35.
The value of unknown number would be equal to 1/5
How can we interpret the division?When 'a' is divided by 'b', then the result we get from the division is the part of 'a' that each one of 'b' items will get. Division can be interpreted as equally dividing the number that is being divided into total x parts, where x is the number of parts the given number is divided.
We need to find the unknown number.
A negative divided by a negative is positive, then;
1/7 of x is 1/35
1/35 divided by 1/7
1/7 of x 1/5 = 1/35.
x = 1/5
Therefore, The value is x = 1/5
Learn more about division here:
brainly.com/question/26411682
#SPJ2
I need help due today
Answers
Answer:
Step-by-step explanation:
y=mx+b b= y-intercept y-intercept=where the line crosses the y-axis m=slope slope== rise/run or slope formula, m=y2-y1/x2-x1
For example, number 1's slope is 5/3. On a graph, you would go up 5 (not in block, but in numerical value) and right 3. The y-intercept is -2. This is where your line starts on the graph.
sorry, cant help ya there buddy
Please help asap! I'll give brainly!
Answers
Answer:
for the first one the answer is 75, for the second one its they are not proportional,
Step-by-step explanation:
IM not sure if its correct sorry:)
he closing amount of the Dow Jones Industrial Average on the stock market for four days is shown in the table below.
Date
Closing amount (in points)
01/27
13,895.98
01/28
13,881.93
01/29
13,954.4
01/30
13,860.42
Which best represents the greatest amount of change that took place from one day to the next day over the four-day period?
a loss of 93.98 points
a loss of 72.47 points
a gain of 72.47 points
a gain of 93.98 points
Answers
Answer:
C) a gain of 72.47 points
Step-by-step explanation:
because on 1/28 it has 13,881.93 and the next day 1/29 it has 13,954.4
subtract 13,954.4 - 13,881.93= 72.47
72.47 is the greatest amount change
And it can’t be 93.98 because in the instructions it said one day to the next not 2 day’s in advance
Rewrite each of the following expressions without using absolute value bars.
a
|x−4| if x>4
b
|x−y| if x
c
|3r−15| if r<5
Answers
a y=x-4 if x>4
b INCOMPLETE
c 3r-15 is r<5
what is the perimeter of a triangle with 3 sides that measure 8 ft, 20 ft, 12 ft
Answers
Answer:
40 ft
Step-by-step explanation:
Perimeter is the sum of all 3 sides of a triangle.
For this particular triangle, add 8+20+12:
40
Answer:
40ft
Step-by-step explanation:
to find perimeter, you have to add up all the sides.
8ft+20ft+12ft+40ft
What is the correct order of statements and reasons to complete the proof? help please
Answers
(TWO PART QUESTION - please answer both)
!! WORTH 60 POINTS !!
A recipe for cake calls for 3/4 cup of sugar and 2 cups of flour.
a. How much sugar would be needed for 1 cup of flour?
b. Write an equation to represent the relationship between s ; sugar, and f ; flour.
Answers
B: flower(f) sugar(s)
S=3/8F
Does the equation have one solution, no solutions, or all solutions? 7x + 4 = 9(x-1)
Answers
Explanation:
First you remove the parenthesis
28=9x-9
Then you calculate
-9x = -9 - 28
Then you divide both sides
-9x = -37
Solution: 37/9
Alternative form:
4 1/9 or 4.1
Note: these are all the same solutions, they are just in different forms
PLS HELP ME!! THIS IS URGENT!!!
Answers
Answer:
no b is the correct answer
Answer:
Step-by-step explanation:
im pretty sure its b
Triangle PQR with vertices P(3, −6), Q(6, −9), and R(−15, 3) is dilated by a scale factor of 3 to obtain triangle P′Q′R′. Which statement best describes triangle P′Q′R′?
Answers
Answer:
It is similar to triangle PQR and has coordinates P′(9, −18), Q′(18, −27), and R′(−45, 9).
Step-by-step explanation:
6 3/7 minus 1 3/6 equals _?
Answers
Hope this helps.
Answer:
umm
Step-by-step explanation:
What is not an example of potential energy?
Question 3 options:
A stretched rubber band
A ball sitting high on a shelf
A pendulum at the top of its swing when it briefly stops
A car accelerating down a hill
Answers
Answer:
a car accelerating down a hill
Step-by-step explanation:
because if an object is moving at a speed, then it has kinetic energy because its moving, not potential energy. potential energy is strored energy meaning that it has the potential to move.
Mr. Aba builds a circular patio with a diameter of 12 feet. He covers the patio with paving stones. The cost of the paving stones is $10.50 per square foot. To the nearest dollar, how much do the paving stones cost.
Answers
Answer:
395.85
Step-by-step explanation:
If the diameter is 12, then the radius must be 6. Following the formula of pi: 2 * pi * radius, our result is 37.7. 37.7 * 10.50 is 395.85
I really hope this helps. My memory of circles and pi isn't the best.
I’m 1000% sure that this correct
I have done this question with other people! Hope this helped
Min saved 334 pennies. Rami saved 6 times as many pennies as Min.
How many pennies did Rami save?
??pennies
Answers
Answer:
2004
Step-by-step explanation:
you have too take 334 and times that by 6 , that should give you 2,004 :)
i hoped i explained it okay, have a nice day !
35 is 20% is what number ANSWER FAST!!!!!
Please show work with double number line Thanks.
Answers
Answer:
175
Step-by-step explanation:
PLz help me! We r doing semester finals and i need to get this lesson finished in 2 hours so i can get my grade up!
Answers
Answer:
$84
Step-by-step explanation:
1. If 20% is marked off, then you are selling it for 80%.
2. 455 * 80% = 364
3. Since you are finding the cost markup from 280, then 364-280=84
GIVING BRAINLIEST :3
Answers
Answer: B
Step-by-step explanation:
Can You Solve This?
(if you can't see what it says the question is: "Using given algebra tiles, write an expression that is equivalent to the quantity represented in the model below" )
Answers
Answer: move the icons thing to the box in your choice I think
HELP QUICKKK
Car A is traveling east at a steady speed of 60 miles per hour. After 2 hours, it is 130 miles east of Johnstown. Car B is traveling east on the same road. Its distance east of Johnstown is represented by the graph. Where were the two cars in relation to each other when they began traveling? A. Car A was 10 miles east of car B. B. Car A was 60 miles east of car B. C. Car B was 20 miles east of car A. D. Car B was 10 miles east of car A
Answers
Answer:
D. Car B was 10 miles east of car A
Step-by-step explanation:
→ Work out how many miles car A travelled
130
→ Work out how many miles car B travelled in 2 hrs
120
→ Find the difference
Car A is bigger by 10 miles
Answer:
Car A was 10 miles east of car B
Im so lost i dont get it
Answers
9-1x<-11
Which means
X>20 is your answer !
Kenzie buys hair scrunchies. The cost for 20 scrunchies is $3.00.
The cost, c, for scrunchies is proportional to the number, n, of scrunchies.
Create an equation using n and c.
________________________________________________
Kenzie has $7.25. What is the maximum number of scrunchies she can buy?
______________________________
Answers
Answer:
48
Step-by-step explanation:
20 scrunchies=3 dollars
7.25 dollars = ?
1 dollar=6.66666666
0.25 dollar=1.666666666666
7*6.66666666=46.666666
:)
Answer:
Kenzie can buy 48 Scrunchies
Step-by-step explanation:
You have to divide 3 by 20. (3/20) Which is also 1.5/10 and as a decimal, that is 15 cents. So one scrunchie is equivalent to 15 cents, which means how many times can you take .15 from 7.25 is how many scrunchies she can buy. So how many times does .15 go into 7.25? The answer is 48.3(repeating). So you have to round it down because if you round it up she needs more money.
I hope that helped :)
PLEASE HELP ASAP!! ILL GIVE BRAINLIEST IF CORRECT
Two linear functions are represented in different formats.
Function 1:
x y
0 5
2 11
5 20
8 29
Function 2: (image below)
Which statements are true?
Select each correct answer.
Function 1 has a greater rate of change than function 2.
Function 2 has a greater rate of change than function 1.
Function 1 has a greater y-intercept than function 2.
Function 2 has a greater y-intercept than function 1.
Answers
Answer:
Function 1 has a greater Y intercept than that of function 2
Step-by-step explanation:
Y intercept can be found by replacing x by 0 or
x = 0 0f the given function.
in this case Function 1 has a Y intercept of 5 when x =0
on the other hand, function 2 crosses the y axis once at -1 which is the y intercept.
you can now clearly see that
y = 5 > y = -1
---> 5>-1
so that's why we conclude that 1 has a greater Y intercept.