Answer:
[tex]5.7 \times {10}^{ - 3} [/tex]
Step-by-step explanation:
0.0057
first number
5
then the rest
7
equal
5.7
There's three zeros behind the number 5 which mean it will be -3
[tex] \times {10}^{ - 3} [/tex]
final answer
[tex]5.7 \times {10}^{ - 3} [/tex]
another example and it will be clear
0.0000403
first number
4
then the rest
03
equal
4.03
There's five zeros behind the number 4 which mean it will be -5
[tex] \times {10}^{ - 5} [/tex]
final answer
[tex]4.03 \times {10}^{ - 5} [/tex]
?
help please........................................................
Answer:
-13/24
Step-by-step explanation:
find the common denominator then add
Veronique and Lily compare their investment accounts to see how much they will have in the accounts after seven years. They substitute their values shown below into the compound interest formula. Compound Interest Accounts Name Principal Interest Rate Number of Years Compounded Veronique $1,000 5% 7 Once a year Lily $1,800 9% 7 Once a year A = P (1 + r) Superscript t Which pair of equations would correctly calculate their compound interests? Veronique: A = 1,000 (1 + 0.05) superscript 7, Lily: A = 1,800 (1 + 0.09) Superscript 7 Veronique: A = 1,000 (1 + 0.07) Superscript 5, Lily: A = 1,800 (1 + 0.07) Superscript 9 Veronique: A = 1,800 (1 + 0.05) Superscript 7, Lily: A = 1,000 (1 + 0.09) Superscript 7 Veronique: A = 1,000 (1 + 0.07) Superscript 5, Lily: A = 1,800 (1 + 0.07) Superscript 9
Answer:
Veronique: A = 1,000 (1 + 0.05) superscript 7, Lily: A = 1,800 (1 + 0.09) Superscript 7
Step-by-step explanation:
the equation used to calculate future value of an investment (or bank deposit) using compound interest is:
future value = present value x (1 + interest rate)ⁿ
Veronique: future value = $1,000 x (1 + 5%)⁷ = $1,057Lily: future value = $1,800 x (1 + 9%)⁷ = $3,290.47Answer:
the answer would be A
Step-by-step explanation:
what the person above said.
The share price of Twitter Inc in September 2016 was $19.30. The next day price changed by -1.22%. Write an equation to describe the change in share price and find the value after the change.
5) The radius of a circle is 6mm. If the sector area is 14.14 mm2, what is the degree measure of the sector?
Answer:
Step-by-step explanation:
sector area = angle/360 * pi * r^2
14.14 = angle/360 * 22/7 * 6^2
14.14 = angle/360 * 22/7 * 36
(360 * 14.14 * 7)/(22 * 36) = angle
angle = 44.99 = 45 degrees
Please answer. Will mark the brainliest and will give 20 points.
The two-way table of column relative frequencies below shows data on whether or not a person has internet access and their preferred method to communicate with friends.
Based on the data, which of the following statements must be true?
(Choice A)
A person who prefers to communicate with friends in person is more likely to have no internet access than to have internet access.
(Choice B)
A person with internet access is more likely than a person without internet access to prefer the wired telephone to communicate with their friends.
(Choice C)
A person with internet access is more likely than a person without internet access to prefer text messaging to communicate with their friends.
(Choice D)
More people without internet access prefer using social networking than people with internet access.
Answer: it is C
Step-by-step explanation:
Answer:
C
Step-by-step explanation:
I got it right. pls give brainliest have a good day !
what does this expression represent five times the quotient of some number and ten
Answer:
5(n/10)
Step-by-step explanation:
quotient of some number and ten=n/10
five time=*5
put it togther=5(n/10)
Johanna wrote the system of equations. 4 x - 3 y = 1, 5 x + 4 y = 9. If the second equation is multiplied by 4, what should the first equation be multiplied by to eliminate the x-variable by addition?
Answer:
The first equation must be multiplied by -5 to eliminate x variable by addition
Step-by-step explanation:
4 x - 3 y = 1 (1)
5 x + 4 y = 9 (2)
If the second equation is multiplied by 4
5x+4y=9. ×4
We have,
20x+16y=36 (3)
The first equation should be multiplied by -5 to eliminate x variable by addition
4x-3y=1 × -5
We have
-20x+15y=-5 (4)
Add equation (3) and (4) to eliminate x variable
20x+16y=36
-20x+15y=-5
31y=31
Divide both sides by 31
y=1
Substitute y=1 into equation (1)
4 x - 3 y = 1
4x-3(1)=1
4x-3=1
4x=1+3
4x=4
Divide both sides by 4
x=1
Answer:
To eliminate x
We multiply Equation 1 by -5
The results are
X = 1
Y= 1
Step-by-step explanation:
4 x - 3 y = 1. .............Equation 1
5 x + 4 y = 9........... Equation 2
If equation 2 is multiplied by 4
4*(5x + 4y = 9)
20x + 16y = 36...... Equation 3
To eliminate x
We multiply Equation 1 by -5
-5*(4 x - 3 y = 1. )
-20x +15y = -5 ..... Equation 4
So we add Equation 3 and Equation 4
31y = 31
Y = 1
Substitute y into Equation 1
4x = 4
X = 1
Quadratic equation. Find the value of m so that the roots of the equation (4 - m) x^2 + (2m + 4)x + (8m + 1) = 0 may be equal.
The quadratic has one root with multiplicity 2 if the discriminant is 0, which is
[tex](2m+4)^2-4(4-m)(8m+1)[/tex]
(That is, for a quadratic [tex]ax^2+bx+c[/tex], the discriminant is [tex]b^2-4ac[/tex].)
Set the discriminant equal to 0 and solve for [tex]m[/tex]:
[tex](2m+4)^2-4(4-m)(8m+1)=0[/tex]
[tex]4m^2+16m+16+32m^2-124m-16=0[/tex]
[tex]36m^2-108=0[/tex]
[tex]36m(m-3)=0[/tex]
[tex]\implies m=0\text{ or }m=3[/tex]
Help me
F (x)=-4x^2+10x-8
What is the value of discrminant of f
How many distinct real number zeros does f have
Answer:
2 Real Roots
Step-by-step explanation:
The discriminant (D) is found using the formula b^2+4ac for the equation ax^2+bx+c.
If D>0 there are two real roots, D=0 one real root and D<0 no real roots.
D = b^2+4ac
D = 10^2+4(-4)(-8)
D = 100+32*4
D = 100+128
D = 228
since 228>0
There are 2 real roots
The scores for the Algebra 2 CFE are normally distributed with a mean score of 43 and
a standard deviation of 3.8. If you scored 47 on the test, what percentage of test takers
scored lower than you? Do not round your answer. [percent]
Answer:
85.375%
Step-by-step explanation:
We would be using the z-score formula which is
z = (x-μ)/σ, where
x is the raw score,
μ is the population mean, and
σ is the population standard deviation.
In the question, we are given:
x is the raw score = 47
μ is the population mean = Mean score = 43
σ is the population standard deviation = 3.8
z = (x-μ)/σ
z = (47- 43)/ 3.8
z = 4/3.8
z = 1.0526315789
The z score = 1.0526315789
Checking my z score on my normal distribution table,
The percentage of test takers that scored lower than you =
[1 - P(x>Z)] × 100
= ( 1 - 0.14625) × 100
= 0.85375 × 100
= 85.375%
Therefore, the percentage of test takers that scored lower than you is 85.375%
The art club had an election to select a president. 75% of the 68 members of the club voted in the election. How many members voted?
Answer:
51 members voted of the 68 members
Stir-fry is tony's favorite food to cook, but it always makes a lot of smoke! Tony needs to know the volume of his kitchen so he can buy a fan that is the right size. Tony's kitchen has a floor area of 85 square feet. The height of the ceiling is 8 feet. What is the volume of tony's kitchen?
Answer:
Volume = 680 ft³
Step-by-step explanation:
Given
Floor Area = 85 ft²
Height = 8 ft
Required
Volume of the Kitchen
To solve this, it'll be assumed that Tony's kitchen has a regular shape.
Having said that, the volume of Tony's kitchen is calculated as thus.
Volume = Floor Area * Height.
Substitute the values of floor area and height
Volume = 85ft² * 8ft
Volume = 680 ft³
Hence, the volume of Tony's kitchen is 680ft³
Simplify x + 3x - 36
Answer:
4x-36
Step-by-step explanation:
Put together like terms
X plus 3x = 4x
Find the lowest common denominator. 1/(x+2)^2, 1/(x-2)^2, 2/x^2-4
Answer:
The lowest common denominator is x² - 4
Step-by-step explanation:
We want to find the lowest common denominator of the fractions 1/(x+2)², 1/(x -2)², 2/(x²-4)
First note that
x² - 4 = (x - 2)(x + 2)
So, 2/(x²-4) = 2/(x - 2)(x + 2)
The other two terms contain (x - 2)² and (x + 2)²
Therefore, the lowest common denominator is (x-2)(x+2) = x² - 4
Was doing my work and need help
Answer:
the answer is 3/20
Step-by-step explanation:
Find the surface area of the prism. Write your answer as a fraction or mixed number. PLZ HELP
Find the area of one side, which is length x width:
2/3 x 2/3 = 4/9 square ft.
There are 6 sides to the prism, so multiply the area of one side by 6:
4/9 x 6 = 24/9 = 2 6/9 = 2 2/3 square ft.
Answer:
the answer is attached to the picture
A cylindrical-shaped mug has a diameter of 8 centimeters and a height of 10 centimeters. What is the volume of the mug? Use 3.14 for pi. *
A. 1256 cubic centimeters
B. 502.4 cubic centimeters
C. 2512 cubic centimeters
D. 2009.6 cubic centimeters
Answer:
C. 2512
Step-by-step explanation:
First,you do
3.14 x 10 x 8
25 12 cubic centimeters
By using the formula for the volume of a cylinder, we will see that the volume of the mug is 502.4 cm^3
How to get the volume of the mug?For a cylinder of radius R and height H, the volume is:
V = pi*R^2*H
In this case, we know that H = 10cm, and the diameter is 8cm, then the radius is half of that:
R = 8cm/2 = 4cm
Replacing that in the volume equation we get:
V = 3.14*(4cm)^2*10cm = 502.4 cm^3
So the correct option is B.
If you want to learn more about volume, you can read:
https://brainly.com/question/1972490
Is there a correlation between the hours spent on homework and the test score? If there is, explain.
Answer:
No there is no correlation between the hours spent on homework and the test scores.
Hope this helps!!!
can someone help me?
Answer:
Step-by-step explanation:
X = 152 -90 = 62 degree
mark has a friend named Chole how different are marks and chole DNA ?
Answer:
xx vrs. xy chromosomes in their genetics
Which equation best describes the sequence-7 , 1, 9, 17, ...
Answer:
B, C, and D
Step-by-step explanation: I am not sure but I do know this nswer because i took the test.
When a grizzley bear hibernates it normal heart rate drops 10 beats per mintue which is 20% of it normal vaule. What is the grizzley bear normal heart rate when not hibernation
Answer:
the normal heart rate of the grizzley bear = 12.5 beats per minute
Step-by-step explanation:
let the normal heart rate = x
hibernating heart rate = 20% of normal value = x - 10
20% of x = x - 10
20/100 of x = x - 10
0.2 × x = x - 10
0.2x = x - 10
x - 0.2x = 10
0.8x = 10
x = 10 ÷ 0.8 = 12.5 beats per minute
y = 5x + 2
4x – y = 0
Is (2, 12) a solution of the system?
A.yes
B.no
Answer: No
Step-by-step explanation:
Substitute (2,12) into the second equation.
4(2) - (12) = 0
8 - 12 = 0
-4 = 0
This statement is false.
Unit 5. 4) Please help. Marcie purchases a helium tank that contains 7.9 cubic feet of helium. Marcie is making a balloon display that contains 15 spherical balloons with a one-foot diameter. Will the helium tank provide enough helium for the display? Why or why not?
Use 3.14 for π in your calculations. Round your answer to the nearest tenth if necessary.
Answer:
The correct answer is option c.
Pls help with 9 and Tysm
Answer:
the last one
Step-by-step explanation:
a number used to multiply a variable
Will give brainliest! I only need e f and g done!!!!
Answer:
E) the new price is going to be $3.92
Work: 3.50 × 12 / 100 = 0.42
3.50 + 0.42 = 3.92
F) Dont understand what this one is asking
G) You would save 1.03$ with the 10% off.
Work: 10.3 x 10 / 100
103 / 100
$1.03
hope this helps
A charity organization had to sale 18 tickets to their fundraiser Just to cover necessary production cost.They sold each ticket for $45.Let y represent the net profit in dollars when they have sold x tickets
A charity organization had to sale 18 tickets to their fundraiser Just to cover necessary production cost.They sold each ticket for $45.Let y represent the net profit in dollars when they have sold x tickets
Which of the following information about the graph of the relationship is given?
Choose 1 answer:
A
Slope and x-intercept
B
Slope and y-intercept
C
Slope and a point that is not an intercept
D
x-intercept and y-intercept
E
y-intercept and a point that is not an intercept
F
Two points that are not intercepts
Answer:
A. Slope and x-intercept
Step-by-step explanation:
We are told that each Ticket cost $45 , so the number of ticket sold should be multiplied by the cost of 1 ticket , Also; we were informed that x tickets were sold, this implies that the amount will be $45 multiplied by x , which is $45x. To find the profit (y) , then we must find the cost of 18 tickets which will give us the cost price and then subtract it from the selling price ($45x).
NOW:
Given that :
a charity organization had to sell 18 tickets
and one ticket cost for $45
Then 18 tickets = $45 × 18 = $810
Let y represent the net profit in dollars when they have sold x tickets
So : y = 45 x - 810
Relating the above equation with equation of a straight line y = mx +c ,
where :
m and c = the numbers on the gradient line ; &
y = slope
x = intercept where the graph crosses y - axis
Thus; the information given is the :Slope and x-intercept
6th GRADE MATH:
Mrs. Torres is mailing a package that weighs 12.5 pounds. The post office charges by the ounce to mail the package. How much does the package weigh in ounces?
Answer:
200 ounces
Step-by-step explanation:
200 ounces. because each pound has 16 ounces and 12.5 pounds has 200 ounces
Answer:
200 ounces.
Step-by-step explanation:
A pound contains 16 ounces.
pound : ounces
1 : 16
12.5 : 200
someone pls help this is due today
Answer: 0.44mm
Step-by-step explanation:
In this problem we are asked for the height of a single playing chip. We know the volume of a cylinder is 25120 mm^3.
V=πr²h
25120=πr²h
The problem also gives the diameter of the case: 40mm.
To find radius, you divide the diameter in half.
d=2r
40=2r
r=20
With the radius, we can add that to the volume equation.
25120=[tex]\pi[/tex](20)^2h
25120=400πh
All we have left is to find the height.
h=25120/(400π)
h≈20mm
Now that we know the height, we can find the height of a single chip. The problem states about 50 chips can fit in a case. To find the height of a single chip, you would divide 20 by 50.
20mm/50 chips=0.4mm/chip.
2.0 mol of AlF3 mol to grams
We assume you are converting between moles AlF3 and gram. You can view more details on each measurement unit: molecular weight of AlF3 or grams This compound is also known as Aluminium Fluoride. The SI base unit for amount of substance is the mole. 1 mole is equal to 1 moles AlF3, or 83.9767476 grams.
