Answer:
It is A
Step-by-step explanation:
EDGE 2020
Answer:
A
Step-by-step explanation:
Yeah it's A, edg 2023
Which choice correctly expresses the number below in scientific notation?
5,790,000
A) 5.79 • 10^7
B) 579 • 10^4
C) 57.9 • 10^5
D) 5.79 • 10^6
E) 579 • 10^6
F) 5.79 • 10^5
Answer:
D
Step-by-step explanation:
In scientific notation, the number that is being multiplied by the power of ten must be greater than or equal to 1 and less than 10. This eliminates options B, C, and E. The rest of the options are all 5.79 times something. To find that something, we can do 5,790,000 / 5.79 = 1000000 = 10⁶. This means that the answer is D.
4. As Jody dives below the water, its temperature decreases by 0.3 degrees Fahrenheit per foot that he dives. If
Jody is diving at a rate of 2.5 feet per second and the water at the surface is at a temperature of 68 degrees
Fahrenheit then what is the temperature of the water Jody is in after diving for 20 seconds?
Using proportions and a linear function, it is found that the temperature of the water Jody is in after diving for 20 seconds is of 53 degrees Fahrenheit.
Jody is diving at a rate of 2.5 feet per second, thus, after 20 seconds, his depth is of:
\(20 \times 2.5 = 50\)
The temperature at the surface is of 68 degrees. For each foot, it decreases by 0.3 degrees. Thus, the function is:
\(T(f) = 68 - 0.3f\)
Jody is at a depth of 50 feet, thus the temperature is T(50).
\(T(50) = 68 - 0.3(50) = 53\)
The temperature of the water Jody is in after diving for 20 seconds is of 53 degrees Fahrenheit.
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Factor. x2 − x − 72 (x − 8)(x + 9) (x − 6)(x + 12) (x + 8)(x − 9) (x + 6)(x − 12)
The solution of the given equation are; (x + 8)(x − 9)
What is a quadratic equation?A quadratic equation is the second-order degree algebraic expression in a variable. the standard form of this expression is ax² + bx + c = 0 where a. b are coefficients and x is the variable and c is a constant.
We have been given the quadratic equation as;
x² − x − 72
Solving;
x² − (9-8)x − 72
x² − 9x +8x− 72
The factors are;
(x + 8)(x − 9)
Therefore, the solution of the given equation are; (x + 8)(x − 9)
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Chandra wants to estimate the percentage of people who smoke. She surveys 100 individuals and finds that 15 of them smoke. Find the margin of error for the confidence interval for the population proportion with a 98% confidence level.
Answer:
M.E = 0.083
the margin of error for the confidence interval for the population proportion with a 98% confidence level is 0.083
Step-by-step explanation:
Confidence interval can be defined as a range of values so defined that there is a specified probability that the value of a parameter lies within it.
The confidence interval of a statistical data can be written as.
p+/-z√(p(1-p)/n)
p+/-M.E
Given that;
M.E = margin of error
Proportion p = 15/100 = 0.15
Number of samples n = 100
Confidence interval = 98%
z(at 98% confidence) = 2.33
Substituting the values we have;
0.15 +/- 2.33√(0.15(1-0.15)/100)
0.15 +/- 2.33√0.001275
0.15 +/- 2.33(0.035707142142)
0.15 +/- 0.083197641192
0.15 +/- 0.083
So;
p = 0.15
M.E = 0.083
the margin of error for the confidence interval for the population proportion with a 98% confidence level is 0.083
You compare the sizes of two MP3 players. The old model is 3/4 inch thick. The new model is 2/5 inch thick. How much thinner is the new model than the old model?
Answer:
7/20 thinner
Step-by-step explanation:
so can u help me guys
Thus, 715,000 = 7.15 x 10⁵, using the concept of scientific notations, both the values are found to be equal.
Explain about the scientific notations:The number of times that decimal point must be moved to obtain a number between 1 and 10 is the exponent in scientific notation. The decimal point is shifted to the left in order to represent this number in scientific notation.
The main goal of scientific notation is to simplify computations using numbers that are abnormally large or small. With scientific notation, every digit counts because zeros are just no longer used to denote the decimal point.
Given expression:
715,000 __ 7.15 x 10⁵
LHS = 715,000
Take the RHS value :
= 7.15 x 10⁵
This, can be simplifies as:
= 7.15 x 100,000
Now multiply the two values,
= 715,000 (RHS values)
as, LHS = RHS
LHS = 715,000
715,000 (RHS values)
Thus, 715,000 = 7.15 x 10⁵, using the concept of scientific notations, both the values are found to be equal.
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SOMEONE PLEASE HELP ME ASAP PLEASE !!!
Answer:
530.66
Step-by-step explanation:
The way we find the area of the circle we use the radius of the circle for this one it's 13cm squared * pi or 3.14
For this circle we do 3.14 * 13^2
First we have to square 13: 13^2 = 169
Then we multiply 169 by 3.14: 3.14 * 169 = 530.66
Then we do to the nearest hundredth which is the same as the previous answer: 530.66
Answer:
169 pie
Step-by-step explanation:
pie is 3.14 and the r stands for radius
in the question radius is 13
in ur calculator u shall type pie times 13 squared
sorry I couldn't use figures to show but I hope that helped
May I know this answer
A function is shown in the table below:
What is the average rate of change of the function from X equals -7 to X equals 2?
A. -90/101
B. 101/90
C. -101/90
D. 90/101
The average rate of change of the given function from x equals -7 to x equals 2 is calculated as: B. 101/90.
How to Find the Average Rate of a Function for a Given Interval?If we are given a function, f(x), to find the average rate of change of the function within the interval from a to b, the formula to use is:
Average rate of change = f(b) - f(a) / b - a.
Given the table that represents function, we have the following:
a = -7
b = 2
f(a) = f(-7) = -2.7
f(b) = f(2) = 7.4
Plug in the values into the formula:
Average rate of change = (7.4 - (-2.7)) / (2 - (-7))
= (7.4 + 2.7) / 2 + 7)
= 10.1 / 9
= 101/90
Therefore, the average rate of change is: B. 101/90.
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helpppppppp meeeeeee
Answer:
h represents the Venn diagram for the above question
The ratio of students that wear glasses to students that do not wear glasses is 1:4. If there were a total of 30 students. How many students wear glasses?
Answer:
34
Step-by-step explanation:
Answer:
6
Step-by-step explanation:
For every 5 students, 1 wears glasses and 4 don't. If you take the total number of students, 30, and divide it by 5, you have 6 groups of 5 students. There will be 1 student for each of those groups wearing glasses, or 6 students.
HURRY!!!!!!!!!!!!!!!
The table shows the proportional relationship between the number of tickets required per game at a carnival. Games 4 7 10 Tickets 20 35 50 Determine the constant of proportionality.
Correct answer will get brainiest
Answer:
Therefore, the constant of proportionality for the given proportional relationship is 5.
Step-by-step explanation:
To determine the constant of proportionality in the given proportional relationship, we can use the formula:
Constant of Proportionality = Tickets / Games
Let's plug in the values from the table:
For the first set of values (4 games and 20 tickets):
Constant of Proportionality = 20 / 4 = 5
For the second set of values (7 games and 35 tickets):
Constant of Proportionality = 35 / 7 = 5
For the third set of values (10 games and 50 tickets):
Constant of Proportionality = 50 / 10 = 5
In all three cases, the constant of proportionality is equal to 5.
Therefore, the constant of proportionality for the given proportional relationship is 5.
The area of the rectangle below is
sq. units.
Help me pls :(
Answer:
D
Step-by-step explanation:
Hey There!
To find the area of a rectangle we do length times width
17 is the width and 4 is the length
so area is equal to 17x4
17x4=68 so your answer would be D
Answer:
Step-by-step explanation:
17 * 4 = 68
so the answer is d
A person drove 39 mph on a trip. If he had driven 52 mph he would have arrived 4 hours earlier. What was the distance the person drove
The distance the person drove was 624 miles.
To find the distance the person drove, we need to use the formula:
Distance = Speed × Time
Let's assume the distance the person drove at 39 mph is D miles. We can set up the following equation based on the given information:
D = 39 × T
Where T is the time it took to complete the trip in hours.
According to the second condition, if the person had driven at 52 mph, they would have arrived 4 hours earlier. This can be expressed as:
D = 52 × (T - 4)
Now we can set up an equation by equating the two expressions for D:
39 × T = 52 × (T - 4)
Simplifying this equation gives:
39T = 52T - 208
13T = 208
T = 16
Now we can substitute the value of T back into one of the earlier equations to find the distance:
D = 39 × 16
D = 624 miles
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Suppose the bacteria population in a specimen increases at a rate proportional to the population at each moment. There were 100 bacteria 4 days ago and 100,000 bacteria 2 days ago. How many bacteria will there be by tomorrow
9514 1404 393
Answer:
about 3,160,000,000
Step-by-step explanation:
"Increases at a rate proportional to population" means the growth is exponential. It can be modeled by the equation ...
p = ab^t
We can find 'a' and 'b' using the given data points.
100 = ab^(-4) . . . . . . . population 4 days ago
100,000 = ab^(-2) . . . population 2 days ago
Dividing the second equation by the first, we find ...
1000 = b^2
b = 1000^(1/2)
Substituting for b in the first equation, we have ...
100 = a(1000^(1/2))^(-4) = a(1000^-2)
100,000,000 = a
Then the population model is ...
p = 100,000,000×1000^(t/2)
__
Tomorrow (t=1), the population will be ...
p = 100,000,000 × 1000^(1/2) ≈ 31.6 × 100,000,000
p ≈ 3,160,000,000 . . . . . bacteria by tomorrow
_____
Additional comment
We could write this as ...
p = 10^(8+1.5t)
Then for t=1, this is p = 10^(8+1.5) = 10^0.5 × 10^9 = 3.16×10^9
HELP MEEEEEEEEEEEEEEEEEEEEE PLEASE!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Answer: 142825
Step-by-step explanation:
If \(t\) is the number of years, then the population is \(P(t)=100000(1.02)^t\).
Setting \(t=18\). \(P(18)=100000(1.02)^{18} \approx 142825\).
Graph the line. pllzzzzzzzz
Answer:
Step-by-step explanation:
X: -2, -1, 0, 1, 2,...
Y: -2, -1, 0, 1, 2,...
(y=x)
Composite figures. PLEASE help me identify the area of the figure. Thank you!
Answer:
\( 84 \: {cm}^{2} \)
Step-by-step explanation:
Area of the figure = Area of rectangle + Area of trapezoid
\( = 18 \times 3 + \frac{1}{2} \{(18 - 11) + 3) \}(9 - 3) \\ \\ = 54 + \frac{1}{2} \{7 + 3 \}6\\ \\ = 54 + 10 \times 3\\ \\ = 54 + 30 \\ \\ = 84 \: {cm}^{2} \)
6 minutes 20 seconds into seconds.
Answer:
380 seconds
Step-by-step explanation:
Convert 6 minutes to seconds by multiplying 6 times 60, because there are 60 seconds per minute.
6 x 60 = 360
Now add the 20 seconds.
360 + 20 = 380
6 minutes and 20 seconds are equal to 380 seconds.
If $500 were deposited into an account paying 5% interest, compound monthly, how much would be in the account in 4 years?
Please show me proper work and a good explanation on how you got said answer.
Answer:
610.48
Step-by-step explanation:
The formula for compound interest is
A = P(1+r/n) ^nt where
A is the amount in the account
P is the principle
r is the interest rate
n is the number of times the interest is compounded per year
t is the time in years
A = 500(1+.05/12) ^12*4
A = 500(1+.0041666666) ^48
A = 500(1.0041666666) ^48
A = 500*1.220895355
A =610.4476775
Rounding to the nearest cent
A = 610.48
A librarian needs to package up all of the children's books and move them to a different location in the library. There are 625 books, and she can fit 25 books in one box. How many boxes does she need in order to move all of the books? 5 B. 25 C. 125 D. 600 E. 650
Answer: B. 25
Step-by-step explanation:
Given: Total books = 625
Number of books can fit in one box = 25
Now, the number of boxes she need to move all of the books = (Total books) ÷ (Number of books can fit in one box )
= 625÷25
= 25
hence, she requires 25 boxes in order to move all of the books.
So, correct option is B. 25.
Use interval notation to express the following: The set of all numbers greater than −10 and less than −3.
the correct option is the first one (-10, -3)
All real numbers x falling inside this range are those such that
-10 < x < -3. The numbers -10 and -3 are not part of the set, as shown by the parentheses.
What is set?
In mathematics, a set is a logically arranged group of items that can be represented in either set-builder or roster form. Sets are typically denoted by curly brackets; for instance, A = 1, 2, 3, 4 is a set. Check the set symbols here as well. The way that sets are represented by a person is always the same: as a group of clearly defined objects or elements. A capital letter designates a set. The cardinal number of a set is the number of elements in the finite set. The number of elements in a set is determined by its order. It describes a set's size. Cardinality is another name for the set order.
From the question:
In interval notation, the set of all integers between -10 and -3 may be written as:
(-10, -3)
All real numbers x falling inside this range are those such that -10 <x <-3. The numbers -10 and -3 are not part of the set, as shown by the parentheses.
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complete question:
Francisco is 1.5 meters tall. Late one afternoon, his shadow was 3.5 meters long. At the same time, the shadow of a nearby tree was 9.8 meters long. Find the height of the tree. Round your answer to the nearest tenth, if necessary.
The tree is 4.2 m long in height.
What is Proportion?In general, the term "proportion" refers to a part, share, or amount that is compared to a total.
According to the concept of proportion, two ratios are in proportion when they are equal.
A mathematical comparison of two numbers is called a proportion. According to proportion, two sets of provided numbers are said to be directly proportional to one another if they increase or decrease in the same ratio. "::" or "=" are symbols used to indicate proportions.
Given:
Francisco is 1.5 meters tall.
Height of Shadow = 3.5 m
Now, Height of shadow of the tree = 9.8 m
let the Height of tree be x.
So, Using Direct proportion
1.5 / 3.5 = x / 9.8
9.8 × 1.5 = 3.5x
14.7 = 3.5x
x= 4.2 m
Hence, the height of the tree is 4.2 m long.
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HELPP!!!
The area of the figure is ____ square units.
Answer:
The answer is 132 square units
Step-by-step explanation:
Cutting the shape
we have two trapeziums
A=(area of small +Area of big)Trapezium
A=1/2(3+9)8 + 1/2(9+12)8
A=1/2×12×8 + 1/2×21×8
A=12×4 + 4×21
A=48+84
A=132 square units
Find the focus of the parabola y^(2)-6y-12x-15=0.
To find the focus of the parabola y^2 - 6y - 12x - 15 = 0, we need to first put it in standard form by completing the square:
y^2 - 6y - 12x - 15 = 0
y^2 - 6y + 9 - 9 - 12x - 15 = 0 (adding and subtracting (6/2)^2 = 9 to complete the square)
(y - 3)^2 - 12x - 24 = 0 (simplifying)
(y - 3)^2 = 12(x + 2)
Now we can see that the parabola has its vertex at the point (-2, 3) and its axis of symmetry is parallel to the x-axis. This means that the focus is located at a point on the axis of symmetry that is equidistant from the vertex and the directrix.
The equation of the directrix is y = 3 - p, where p is the distance between the vertex and the directrix. Since the parabola opens to the right, p is negative, and its absolute value is equal to the distance between the vertex and the focus.
To find p, we can use the formula:
4p = |coefficient of x in the standard form equation|
In this case, the coefficient of x is 12, so:
4p = 12
p = 3
Therefore, the equation of the directrix is y = 3 - 3 = 0.
Since the vertex is (-2, 3) and the distance between the vertex and the directrix is 3, the focus is located at a point on the axis of symmetry that is 3 units to the right of the vertex. So the x-coordinate of the focus is:
x = -2 + 3 = 1
To find the y-coordinate of the focus, we can substitute x = 1 into the equation of the parabola:
(y - 3)^2 = 12(x + 2)
(y - 3)^2 = 12(3)
(y - 3)^2 = 36
y - 3 = ±6
y = 3 ± 6
Since the focus must be above the directrix, the y-coordinate of the focus is:
y = 3 + 6 = 9
Therefore, the focus of the parabola y^2 - 6y - 12x - 15 = 0 is located at the point (1, 9).
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A banner in thevshape ofba parallelogram has an area of 25ft square.the height of thr banner is 1 1/4 feet. What is the length of banner, in feet?
20 ft
Explanation
the area of a parallelogram is given by:
\(\text{Area}_{paralle\log ram}=base\cdot heigth\)then
Step 1
Let
base=unknow length= x
heingth=1 1/4 feet = 1.25 ft
Area= 25 quare ft
now, replace.
\(\begin{gathered} \text{Area}_{paralle\log ram}=base\cdot heigth \\ 25ft^2=x\cdot1.25\text{ ft} \\ 25=1.25x \\ \text{divide both sides by 1.25} \\ \frac{25}{1.25}=\frac{1.25x}{1.25} \\ 20=x \end{gathered}\)therefore, the length of the banner is 20 ft.
I hope this helps you
Kevin wants to hike the Pacific Crest Trail, which is 2,653 miles long. If Kevin wants to
finish the hike in 7 months, how many miles should he hike each month?
miles
Answer:
378
Step-by-step explanation:
2,653 divided by 7
8.2: Word Problems - UNDERLINE key words, set up your division sentence, then solve!
Ms. K's cooking club needs 2 1/4 cups of flour to make enough crepes for everyone in the class. The
club split into 6 smaller groups, each making their own batch. How much flour does each group
need?
Answer:
3/8
Step-by-step explanation:
hope it helps :)
Someone please please help ASAP.
OU Daily predicts that the OU Sooners will have a better football season than the USC Trojans. Which of the following best represents the OU Daily's null hypothesis?
A. OU Sooners = USC Trojans
B. OU Sooners ≠ USC Trojans
C. OU Sooners > USC Trojans
D. OU Sooners < USC Trojans
The best statement that represents the OU daily's null hypothesis is OU Sooners = USC Trojans
What is statement ?
A declarative sentence that can only be true or false—neither—is referred to as a statement. A proposition may also be used to refer to a statement. There must be no uncertainty; this is crucial. A sentence can only be true or untrue, not both, in order to be considered a statement.
A meaningful group of words can be used to form a mathematical assertion, which can either be true or untrue. They are simply referred to as a statement. For example, the word "p" could stand for the phrase "ABC is an equilateral triangle." In an equilateral triangle, p thus equals ABC.
OU daily - predicts that,
the OU Sooners will have a better football season than the USC Trojans
The best represents the OU Daily's null hypothesis is,
∴ OU Sooner = USC Trojans
The null and alternative hypothesis is
Null Hypothesis :
OU Sooner = USC Trojans
Alternative Hypothesis : OU Sooner > USC Trojans
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