Answer:
4³
Step-by-step explanation:
using the rules of exponents
• [tex]a^{m}[/tex] × [tex]a^{n}[/tex] = [tex]a^{(m+n)}[/tex]
• [tex]\frac{a^{m} }{a^{n} }[/tex] = [tex]a^{(m-n)}[/tex]
then
4² × [tex]4^{4}[/tex] / 4³
= [tex]4^{(2+4)}[/tex] / 4³
= [tex]4^{6}[/tex] / 4³
= [tex]4^{(6-3)}[/tex]
= 4³
Joe needs to make a total of 20 deliveries this week. So far he has completed 19 of them. What percentage of his total deliveries has Joe completed?
Answer:
He has completed 95% of deliveries
Step-by-step explanation:
Solve 9x-2y = 15 for y.
y= ?
(Use integers or fractions for any numbers in the expression.)
Answer:
[tex]\frac92x - \frac{15}2 = y[/tex]
Step-by-step explanation:
[tex]9x - 2y = 15 \text{ / Add 2y} \\9x - 2y + 2y = 15 + 2y \\\to 9x = 15 + 2y \text{ / Subtract 15} \\9x - 15 = 15 + 2y - 15 \\\to 9x - 15 = 2y \text{ / Divide by 2} \\\frac{9x - 15}2 = \frac{2y}2 \\ \\\frac92x - \frac{15}2 = y[/tex]
Easton broke a cell sample into 8 batches, each weighing 3.9 x 10^-5 grams. How
much did the original sample weigh? Use scientific notation to express your answer.
The weight of the original sample from which all eight batches which each weighed 3.9 × 10-⁵ are obtained as required in the task content is; 3.12 × 10-⁴.
What is the weight of the original sample from which the eight batches were obtained?It follows from the task content that the weight of the original sample from which the eight batches were obtained be determined.
Hence, since each of the eight batches weighs;
3.9 × 10-⁵
Therefore, the weight of the original sample can be obtained as follows;
= 8 × 3.9 × 10-⁵
= 31.2 × 10-⁵.
However, when the weight is expressed in scientific notation, the weight of the original sample is;
3.12 × 10-⁴.
Ultimately, The weight of the original sample from which all eight batches which each weighed 3.9 × 10-⁵ are obtained as required in the task content is; 3.12 × 10-⁴.
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3.5 ft
3
6 ft
21. Hot Tub The inside of a circular hot tub is lined
with 1-inch by 1-inch tiles.
a. Explain how to estimate the number of tiles
needed for the hot tub.
b. The hot tub is 3.5 feet deep and has a diameter
of 6 feet. What is the minimum number of tiles
needed? (The formula for the circumference of
a circle is C= md.)
Answer: ?
comfusing
Step-by-step explanation:
A company reports that 2000 sem electronics parts where found defective. if this represents 5% of the total shipments how many of these parts were shipped?
The company shipped altogether 40,000 sem electronic parts. Out of which 2000 parts were reported as defective.
Given, we know that 2000 electronic parts we declared as defective.
from the question, the defective parts represented 5% of the total shipments.
let the total parts be 'x'.
therefore, 5% of total parts = 2000
⇒ 5% of x = 2000
⇒ 5/100 × x = 2000
⇒ 5x/100 = 2000
⇒ 5x = 200000
⇒ x = 200000/5
⇒ x = 40,000
total parts shipped = 40,000
hence we get the total electronic which were shipped as 40,000.
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Ruby has 20 oranges. If she eats 3/5 of them, how many does she have left.
Answer:
She has 12 oranges left
Step-by-step explanation:
convert 3/5 to a decimal
3÷5=0.6
then multiply that by 20
0.6*20=12
A city has a population of 350000 the population has decreased by 30% in the past ten years what was the population Of the city ten years ago. Show solving steps
Answer:
30% x 350000 + 105000
Step-by-step explanation:
30
100
(350000)
=(
30
100
)(
350000
1
)
=(
3
10
)(
350000
1
)
=
(3)(350000)
(10)(1)
=
1050000
10
=105000
Information to answer the question.
This data represents the number of jumps in a row 10 students made during a jump-rope competition.
30, 36, 38, 45, 57, 60, 77, 86, 88, 88
What is the interquartile range? Enter the answer in the box.
Jumps
Answer: 48
So, to find out the interquartile range, we must first find the median of the lower and upper half of the data. So, 30, 36, 38, 45, 57 | 60, 77, 86, 88, 88 For the first half, the median is 38, and for the upper half, the median is 86. The median of the lower half is known as the quartile 1, and the median of the upper half is known as the quartile 3. The interquartile range is found by the difference between Q3 and Q1. So, 86 - 38 = 48.
There were 48 jumps.
Hops this helps :)
For the function
f
(
x
)
=
−
2
x
+
4
, evaluate and simplify the difference quotient.
the difference quotient for the given function is 2.
How to evaluate the difference quotient?For any function f(x), we define the difference quotient as:
( f(x + h) - f(x))/h
And we take the limit as h tends to zero.
Here our function is:
f(x) = 2x + 4
Replacing it in the difference quotient we get:
(2*(x + h) + 4 - 2x - 4)/h = ( 2x + 2h + 4 - 2x - 4)/h = 2h/h = 2
So we conclude that the difference quotient for the given function is 2.
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A scientist studies a pond and finds that it has 18 fish and 24 turtles. What is the ratio of turtles to fish in the pond? Responses 4:34:3 3:43:4 7:47:4 4:7
Answer:
4:3
Step-by-step explanation:
They list first first but then ask for turtles to fish.
[tex]\frac{24}{18}[/tex] Divide the top and the bottom by 6 to get [tex]\frac{4}{3}[/tex] or 4:3
dogs to cats is 2:7 there are 90 animals how many are cats
[tex]cats = \frac{90}{2 + 7} \times 2 = 20 \: cats[/tex]
What is the slope of the line that passes through the points (2,-6) and (6,-12)
Write your answer in simplest form.
Answer:
the answer is -3/2
Step-by-step explanation:
-12-(-6) = -6
6-2=4
-6/4 simplified is -3/2
There are 64 people coming to your party and each person will need one cup. How many packages of cups should you buy if one package contains 23 cups?
Answer:
3 packages
Step-by-step explanation:
64/23 = 2 18/23, so 3 packages will be needed.
Alternately, 23 + 23 = 46, and 64 - 46 = 18.
So 2 packages will not be enough; 3 packages will do.
A motorboat can maintain a constant speed of 48 miles per hour relative to the water. The boat makes a trip upstream to a certain point in 19 minutes; the return trip takes 13 minutes. What is the speed of the current?
The speed of the current will be 8.89 miles per hour.
Given that,
The constant speed of motorboat = x = 48 miles per hour
And,
The Time taken by boat to make the upstream trip = 19/60 hour
And,
The Time taken by boat to make the return trip = 13/60 hour
Now,
According to the question,
Let,
The speed of the current = y miles per hour
And,
The total distance covered = z miles
And,
We know that,
Speed = Distance/Time
So,
For the upstream trip,
x - y = z/(19/60),
So,
z = (x-y) * (19/60) .....(i)
And,
For downstream trip
x + y = z/(13/60)
So,
z = (x + y) * (13/60) .....(ii)
From equations (i) and (ii),
We get,
(x - y) * (19/60) = (x + y) * (13/60)
i.e.
(48 - y) * (0.32) = (48 + y) * (0.22)
On solving we get,
15.36 - 0.32y = 10.56 + 0.22y
We get,
0.54y = 4.8
y = 4.8/0.54 = 8.89 miles per hour
So,
The speed of current = 8.89 miles per hour
Hence we can say that the speed of the current will be 8.89 miles per hour.
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A water faucet leaked 3 2/6 liters of water every 3/5 of an hour. It leaked at a rate of how many liters per hour?
Our water faucet leaked 3 2/6 liters of water every 3/5 of a hour.
We are to find the rate in liter per hour at which the water faucet leaked.
First, use the number of liters the water faucet leaked in 3/5 of a hour.
This is 3 2/6 = 20/6
Therefore, the number of liters of water faucet leaked in 1 hour is
(20/6) / (3/5)
Before we solve this, we should simplify,
20/6 can be simplified to 10/3
3/5 cannot be simplified
Then, we should modify our problem to use reciprocation instead of a complex fraction,
(10 • 5) / (3 • 3)
This equals 50/9
Now, solve 50/9 for 5.555555555556
This rounds to 5.6
Thus, the required rate at which the water faucet leaked is 5.6 liters per hour.
5x=8x-75
Solve for X
Answer:
75=8x-5x
75=3x
75/3=x
x=25 answer
Divide 64.5 by 0.015 leaving your answer in a standard form
Answer:
4300
Step-by-step explanation:
After taking a dose of medication, the amount of medicine remaining in a person's bloodstream, in milligrams, after xx hours can be modeled by the function f(x)=110(0.91)^{x}.f(x)=110(0.91)
x
. Find and interpret the given function values and determine an appropriate domain for the function.
The Domain is [0, ∞) and range is (0, ∞)
What is exponential function?An exponential function is a mathematical function of the following form: f ( x ) = [tex]a^{x}[/tex]. where x is a variable, and a is a constant called the base of the function.
Given:
After taking a dose of medication, the amount of medicine remaining in a person's bloodstream, in milligrams, after x hours can be modeled by the function
f(x)=110[tex](0.91)^{x}[/tex]
as, the general form of exponential function is
f(x)= [tex](ab)^{x}[/tex]
where a is the initial value, 0<b<1 is decay factor and b>1 is growth factor.
Now comparing with main function we have 110 is the initial value and 0.91 is the decay factor.
As, exponential function is defined for all real values of x but the time cannot be negative.
so, Domain: [0, ∞)
and, [tex](0.91)^{x}[/tex]>0
so, 110[tex](0.91)^{x}[/tex]>0
Then the range is (0, ∞)
Hence, the Domain: [0, ∞) and range is (0, ∞)
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.
A family wants to fence in a rectangular area for a garden. One side of the garden will
border their house and will not be fenced. Find the dimensions of the garden with greatest area that can be enclosed with 64 ft of fencing.
A) 16 ft by 16 ft
B) 32 ft by 32 ft
OC) 8 ft by 8 ft
OD) 16 ft by 32 ft
Polygon mnopq is dilated by a scale factor of 5.4 with point M as the center of dilation to form the image m’n’o’p’q compare no and n’o
N'O' does not pass through point M.
NO and N'O' both have the same slopes.
A closed polygonal chain made up of a finite number of straight line segments defines a polygon as a planar figure. A polygon is a region that is bounded by a bounding circuit, a bounding plane, or both. A polygonal circuit's segments are referred to as its edges or sides.
Every point will be 5.4 times farther away from point M after dilation by a factor of 5.4 around that point. (The only point that stays put is point M.) If a line didn't cross point M before the dilation, it won't cross point M after the dilation.
Point M is not traversed by segment N'O'.
Only the distances from the dilation center are altered by dilation. Angles or orientation are unaffected.
NO and N'O' both have the same slopes.
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Write an equation for the transformation of y=x
vertical compression by a factor of 1/11
The equation which results from the transformation of the equation given; y = x in the task content is; y = (1/11)x.
What is the resulting equation for the transformation given in the task content?It follows from the task content that the resulting equation from the transformation of the graph of y =x after a vertical compression by a factor of 1/11 as given in the task content is to be determined.
On this note, since the compression is vertical, the resulting vertical component is; (1/11)• y.
Hence, the resulting graph upon compression is; (1/11)• y.
Ultimately, the resulting graph upon the vertical compression is; y = (1/11) x.
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Which of the terms best describes the following sequence?
13, 26, 39, 52, ...
Group of answer choices
Arithmetic
Geometric
Neither
Answer:
It's both an A. P and a G. P series.
Step-by-step explanation:
Let's prove using A.P with a common difference (d) = 13
Let's say we want to find the second number
a + (n - 1)d
a = 13, n = 4, d = 13
.: S2= 13 + ( 2- 1)13
S2= 13 + (1) 13
S2= 13 + 13 = 26
Let's show using a G. P series.
S2 = arⁿ—¹
S2 = 13 × 2²—¹
S2 = 13 × 2¹
S2 = 13 × 2 = 26
please help quick!!!!!
The total cost for 4 tickets, 2 popcorns, and 1 bottled water is $46.25
How to find an equation to find the cost?
Here we know that:
Each ticket costs $9.75Popcorn costs $6.25Bottled water costs $4.75Then the cost of 4 tickets, 2 popcorns, and 1 bottled water is given by the expression:
4*$9.75 + 2*$6.25 + 1*$4.75
Solving this expression we will get that the total cost is:
C = 4*$9.75 + 2*$6.25 + 1*$4.75 = $46.25
We can conclude that the total cost for 4 tickets, 2 popcorns, and 1 bottled water is $46.25.
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At Elmo's, an old-fashioned barber shop in Melbourne, Florida, 66% of all customers get a haircut, 49% get a shave, and 40% get both.
a) What is the probability that a randomly selected person doesn't get a shave and doesn't get a haircut? Your answer should have at least 3 decimal places.
b) What is the probability that a randomly selected person gets a shave, given that they get a haircut? Your answer should have at least 3 decimal places.
a)0.250
b)0.606
In the given question , we observe that
at Elmo's an old-fashioned barber shop in Melbourne, Florida ,66% of all customers get a haircut ,49% get a save and 40% get both.
Probability is simply how likely something is to happen.
Whenever we are unsure about the outcome of an event, we can talk about the probabilities of certain outcomes—how likely they are. The analysis of events governed by probability is called statistics.
The best example for understanding probability is flipping a coin:
There are two possible outcomes—heads or tails.
Independent event:
If two events, A and B are independent then the joint probability is
P(A and B)=P(A∩B)=P(A)P(B)
For example, if two coins are flipped, then the chance of both being heads is 1/2*1/2=1/4
probabilities of different events are:
P(Haircut)=66%=66/100=0.66
P(Shave)=49%=49/100=0.49
P(both)=40%=40/100=0.40
a) we have to find the probability that a randomly selected person doesn't get a shave and doesn't get a haircut.
P(no haircut ∩ no shave)=1-P(haircut ∪ shave)
=1-[P(haircut)+P(shave)-P(both)]
=1-[0.66+0.49-0.40]
=1-0.75
=0.250
b) we have to find the probability that a randomly selected person gets a shave, given that they get a haircut.
P(Shave/Haircut)=P(Both)/P(Haircut)
=0.40/0.66
=0.606
Hence, final answer is
a) the probability that a randomly selected person doesn't get a shave and doesn't get a haircut=0.250
b)the probability that a randomly selected person gets a shave, given that they get a haircut=0.606
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In this problem, we explore the effect on the standard deviation of adding the same constant to each data value in a data set. Consider the following data set. 14, 12, 16, 8, 6
The standard deviation of both sets of data is the same, at 3.67,and adding the same constant c to each data value results in the standard deviation remaining the same.
Define Standard deviation?
In statistics, the standard deviation is a measure of the amount of variation or dispersion of a set of values. A low standard deviation indicates that the values tend to be close to the mean of the set, while a high standard deviation indicates that the values are spread out over a wider range.
We have a data set:
14, 12, 16, 8, 6
As we know the standard deviation formula is :
σ = √[∑(xi-X)/n]
σ = population standard deviation
Here ,
xi = value from the data set
X = mean of the data set
n = number of observation in data set.
X = (14+12+16+8+6)/5
X = 56/5
Where, n = 5
After calculating the standard deviation will be:
σ = 11.2
Add 8 to each data value to get the new data set 14, 12, 16, 8, 6.
We can write,
14+8=22
12+8=20
16+8=24
8+8=16
6+8=14
Then,
New data set is ⇒ 22,20,24,16,14
New standard deviation:
σ(new) = 11.2
Since both sets of data have the same standard deviation, we can conclude that adding a constant to each data value has no effect on the standard deviation.
Adding the same constant c to each data value results in the standard deviation remaining the same.
Thus, the standard deviation of both the data are the same which is 11.2 and adding the same constant c to each data value results in the standard deviation remaining the same.
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ABCD is a quadrilateral
Please Help I’m struggling
The inequality for the given statement is 0<n≤8 and the solution set the inequality -8 ≤ w < 2 are w=-8, w=-5 and w=0.
The given inequality is -8 ≤ w < 2.
What is the solution set of inequality?The solution set of inequality is the set of all solutions. Typically an inequality has infinitely many solutions and the solution set is easily described using interval notation.
a) The solution set the inequality -8 ≤ w < 2 is {-8, -7, -6, -5, -4, -3, -2, -1, 0, 1}
So, the solution sets from the options are w=-8, w=-5 and w=0.
b) The given equation is "a number n is greater than 0, and less than or equal to 8"
The inequality for the given statement is 0<n≤8.
Therefore, the inequality for the given statement is 0<n≤8 and the solution set the inequality -8 ≤ w < 2 are w=-8, w=-5 and w=0.
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What is the inverse of conditional w=v
The inverse of the conditional statement w = v is the same as ~w = ~v
What is the inverse of a conditional statement?This is the term that is used to refer to the statement that is written in mathematics as well as in logic that tells us the negation of the hypothesis that has been made in a statement and the conclusion that has been made as well of that statement.
For instance when we say that it is snowing, the opposite would be it is not snowing.
Hence the way that we would be able to write the statement that we have here would be same as ~w = ~v
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Help please I will give 100 pts
AND! IF U GIVE THE CORRECT ANSWER U GET BRAINLIEST
I am aware of the topic (mathematics)
Thank uu
Answer:
27
Step-by-step explanation:
you just add all of them together
A colony of bacteria doubles in population every hour. Approximately how many hours will it take until the colony is 32
size?
Answer:23 hours
Step-by-step explanation:23 hours