Answer:
2/10?
Step-by-step explanation:
10x-5=0 equation ,inverse operation,simplify,inverse operation,solution,check
Answer:
0.5
Step-by-step explanation:
first you must solve addition and subtraction, to find x you must do the opposite of what it says
you must add 5 from both sides
10x -5 = 0
+5 = +5
then you must solve multiplication and division, for example here it says that 10 is being multiplied with x so you must do division
you must divide 10 to both sides
10x =5
10/10 = 5/10
after dividing 5 by 10 it will give you 0.5
so the check is
10x . 0.5 - 5 = 0
if this help you please give me a crown
Essential Question: What were the roles and contributions of African Americans, both free and enslaved, during the Civil War? plz dont answer
Answer:
During the war, both sides used African Americans for military purposes; in the South as enslaved labor and in the north as wage labor and military volunteers. Over 100,000 formerly enslaved people fought for the Union and over 500,000 fled their plantations for Union lines.
A hotel costs $100 per night plus a $35 hotel fee. If George has $500, what is the maximum number of nights he could stay
Answer:
4 nights
Step-by-step explanation:
use the equation
y = 100x + 35
substitute y for 500
500 = 100x + 35
solve for x
465 = 100x
x = 4.65
so based on the situation he could only stay 4 nights
Odds only please I need this done ASAP
Answer:
1. 0.46666666666 repeating 6
3. -0.66666 repeating 6
5. 3.34090909 repeating 09
7. 0.3434 repeating 34
(when I say repeating, just take it back to the first two numbers that are repeated and put the bar notion above it)
Step-by-step explanation:
y = ___x - ___
Enter the missing numbers separated by a comma and no spaces!
what does x equal? 2/3x + x = -1/3x + 14
Aladder that has a length of 13 m leans against a wall with the base of the ladder 5 m away from the bottom of the wall
Answer:
3.3m
Step-by-step explanation:
Which two charges have a sum of 0? (1 point) a +6 charge and +6 charge b −6 charge and −6 charge c +6 charge and 0 charge d +6 charge and −6 charge
Answer:
+6 charge and −6 charge
Step-by-step explanation:
In this problem, we need to find two charges that have a sum of 0.
In option (d), both charges have the same magnitude. But they have opposite charges.
Sum means to add up charges i.e.
+6 charge +(-6) charge = 0 (they have opposite charges)
Hence, the correct option is (d).
The model below can be used to find the quotient of 1/2 divided by 1/6. What is the quotient
Answer:
Pretty sure it's 3
Step-by-step explanation:
A community swimming pool is a rectangular prism that is 30 feet long, 12 feet wide, and 5 feet deep. The wading pool is half as long, half as deep, and the same width as the larger pool. How many times greater is the volume of the swimming pool than the volume of the wading pool?
Answer:
The volume of the community swimming pool is 4 times greaters than the volume of the wading pool.
Step-by-step explanation:
By definition of rectangular prism, we get the respective formulas for the volumes of the community swimming pool and the wadling pool, respectively:
Community swimming pool
[tex]V_{c} = l\cdot w\cdot h[/tex] (1)
Wading pool
[tex]V_{w} = \left(\frac{1}{2}\cdot l \right)\cdot \left(\frac{1}{2}\cdot h\right)\cdot w[/tex] (2)
Where:
[tex]l[/tex] - Length of the swimming pool, measured in feet.
[tex]h[/tex] - Depth of the swimming pool, measured in feet.
[tex]w[/tex] - Width of the swimming pool, measured in feet.
[tex]V_{c}[/tex] - Volume of the community swimming pool, measured in cubic feet.
[tex]V_{w}[/tex] - Volume of the wading swimming pool, measured in cubic feet.
The ratio of the volume of the community swimming pool to the volume of the wadling pool is:
[tex]\frac{V_{c}}{V_{w}} = \frac{l\cdot w \cdot h}{\left(\frac{1}{2}\cdot l \right)\cdot \left(\frac{1}{2}\cdot h\right)\cdot w}[/tex] (3)
[tex]\frac{V_{c}}{V_{w}} = \frac{1}{\frac{1}{4} }[/tex]
[tex]\frac{V_{c}}{V_{w}} = 4[/tex]
The volume of the community swimming pool is 4 times greaters than the volume of the wading pool.
A graph of average resting heart rates is shown below. The average resting heart
rate for adults is 72 beats per minute, but doctors consider resting rates from 60-100
beats per minute within normal range.
Step-by-step explanation:
its A 10-year-old has the same average resting heart rate as a 20-year-old
hope it helps!
The business college computing center wants to determine the proportion of business students who have personal computers (PCʹs) at home. If the proportion exceeds 25%, then the lab will scale back a proposed enlargement of its facilities. Suppose 200 business students were randomly sampled and 65 have PCʹs at home. Find the rejection region for this test using α = 0.01. (Note that this is a right-tailed test).
A) Reject H0 if 0 z > 2.33.
B) Reject H0 if 0 z < -2.33.
C) Reject H0 if 0 z > 2.575 or z < -2.575.
D) Reject H0 if 0 z = 2.
Find the test statistic, 0 t , to test the claim about the population mean μ < 6.7 given n = 20, x = 6.3, s = 2.0.
A) -1.233
B) -0.872
C) -1.265
D) -0.894
Determine the test statistic, 0 z , to test the claim about the population proportion p < 0.85 given n = 60 and x = 39.
A) -4.34
B) -1.96
C) -1.85
D) -1.76
Answer:
Question 5
correct option is A
Question 6
correct option is D
Question 7
correct option is A
Step-by-step explanation:
Considering question 5
From the question we are told that
The population proportion considered is [tex]p = 0.25[/tex]
The sample size is n = 200
The number that had a personal computer at home is [tex]k = 65[/tex]
The level of significance is [tex]\alpha = 0.01[/tex]
The null hypothesis is [tex]H_o : p = 0.25[/tex]
The alternative hypothesis is [tex]H_a : p > 0.25[/tex]
Generally from the z-table the critical value of [tex]\alpha = 0.01[/tex] to the right of the curve is
[tex]z_{\alpha } = 2.33[/tex]
Generally given that it is a right-tailed test , the rejection region is
z > 2.33
Considering question 6
The sample size is n = 20
The standard deviation is [tex]s = 2[/tex]
The sample mean is [tex]\=x = 6.3[/tex]
The population mean [tex]\mu = 6.7[/tex]
Generally the test statistics is mathematically represented as
[tex]t = \frac{ \= x - \mu }{\frac{s}{\sqrt{n} } }[/tex]
=> [tex]t = \frac{ 6.3 - 6.7 }{ \frac{ 2}{ \sqrt{20} } }[/tex]
=> [tex]t = -0.894[/tex]
Considering question 7
The sample size is n = 60
The sample mean is [tex]x = 39[/tex]
The population proportion [tex]p = 0.85[/tex]
Gnerally the sample proportion is mathematically represented as
[tex]\^ p = \frac{x}{n}[/tex]
=> [tex]\^ p = \frac{39}{60}[/tex]
=> [tex]\^ p = 0.65[/tex]
Generally the standard error of this distribution is mathematically represented as
[tex]SE = \sqrt{ \frac{ p(1 - p ) }{ n } }[/tex]
=> [tex]SE = \sqrt{ \frac{ 0.85 (1 - 0.85 ) }{ 60 } }[/tex]
=> [tex]SE = 0.0461[/tex]
Generally the test statistics is mathematically represented as
[tex]z = \frac{ \^ p - p }{SE}[/tex]
=> [tex]z = \frac{ 0.65 - 0.85 }{0.0461}[/tex]
=> [tex]z = -4.34[/tex]
Can you help with this question.
Answer:
29.04+179×180°
29.04+32220
32249.04
anyone got the answer to this?
Answer: 68 in^2
Step-by-step explanation:
the figure has a square with a side of 6
Asquare= 6*6=36
a rectangle with w=4 ( 10-6=4) and a lenght of 6
Arectangle= 6*4=24
and we have a triangle with the base of 4 and height of 4
Atriangle = 4*4/2=8
the whole area is Afigure=36+24+8=68
What is the equation of a parabola with a vertex at the origin and focus (0, 1)?
The distance from the vertex to the focus is p.
In this case, p = 1. This parabola is centered at the origin also known as the point (0,0). In other words, (h, k) = (0, 0).
The general equation for a parabola is
(x - h)^2 = 4p(y - k).
P = 1
h = 0
k = 0
We now plug and chug.
(x - 0)^2 = 4(1)(y - 0)
x^2 = 4y
Done.
P. S. I decided to include a picture of the graph of this parabola.
40. Figure I and Figure Il are similar quadrilaterals.
Figure I
Figure II
2
3.2
b
a
3.2 mm
2 mm
8 mm
a mm
b mm
6.4 mm
b
6.4
8
5
5 mm
8 mm
Which proportion must be true?
O
coln
2
Doc
CLEAR ALL
Answer: it’s 3.2/2 =a/8
Step-by-step explanation: because it was on quizzes and it’s right lol
Find the probability of drawing a green card, not replacing it, and then drawing another green card.
9 100
3 50
1 15
Answer:
1/15
Step-by-step explanation:
This is probably too late but I'll do it anyway.
There are 10 cards in all.
of the 10, 3 are green.
So your chance of drawing the first green is 3/10
Now you have 9 cards in total left.
Two of them are green
Your chance of drawing a green card again is 2/9
Your total chance of drawing 2 green cards is
2/9 * 3/10 = 6/90
2/9 * 3/10 = 1/15
What value of x makes this equation true?
12x - 15 = 6 - 3x
Answer:
the first answer choice - 7/5
Step-by-step explanation:
If you have 30 respondents identifying their political preference (i.s., Democrat, Republican, or independent), what would the expected frequency be for each category
Answer:
The expected frequency for each category would be:
10.
Step-by-step explanation:
a) Data and Calculations:
Number of respondents = 30
Number of categories = 3
Political preferences (categories) = 3
Probability of each category or preference occurring = 1/3
Expected frequency for each category = 1/3 * 30 = 10
b) The expected frequency for each political category (political affiliation) can be calculated by multiplying the probability of each category (political preferences) by the number of respondents. Note that the expected frequency will be different from the observed frequency, which is the actual number of times that each category of political affiliations will be preferred.
Plot a point on the coordinate plane to represent each of the ratio values in the table.
Answer:
U almost got it right I posted the right answer below.
Step-by-step explanation:
The answer should be like this:
To log on to a certain computer account, the user must type in a 4-letter password. In such a password, no letter may be repeated, and only the lower case of a letter may be used. How many such 4-letter passwords are possible
Answer:
358800
Step-by-step explanation:
To create a four-letter password such that no letter are repeated and only lower cases are used;
For the first letter, we can choose any letter from A to Z = 26
We can choose any letter from A to Z except for the first letter for the second letter. = 25
We can choose any letter from A to Z except for the first & second letter for the third letter. = 24
We can choose any letter from A to Z except for the first, second & third letters for the fourth letter. = 23
SO;
No of ways in which 4-letter passwords are possible = 26 × 25 × 24 × 23
No of ways in which 4-letter passwords are possible = 358800
2. Con los siguientes vectores realice las operaciones expresadas con su gráfica ( polígono
o paralelogramo)
u= (1, -3), v = (-2,5)
a. U + V
b. U-v
Gánster:
polígono
de nada
expresiones algebraica porfavor
Answer:
a) [tex]y = 2\cdot x + 4[/tex], b) [tex]y = 2\cdot (x+5)[/tex], c) [tex]y = x-7[/tex], d) [tex]y = 3\cdot x +2[/tex], e) [tex]y = x^{2}-2[/tex], f) [tex]p = 4\cdot x[/tex], g) [tex]y = x^{3}-1[/tex]
Step-by-step explanation:
A continuación, presentamos la solución de cada ejercicio anexo al PDF:
a) El doble de un número más cuatro:
Esto se puede escribir así: Existe un número [tex]y[/tex] igual a un número [tex]x[/tex] multiplicado por dos y sumado por cuatro.
[tex]y = 2\cdot x + 4[/tex]
b) El doble de la suma de un número más cinco:
Esto se puede escribir así: Existe un número [tex]y[/tex] igual al producto de dos y la suma entre un número [tex]x[/tex] y cinco.
[tex]y = 2\cdot (x+5)[/tex]
c) Un número menos siete:
Esto se puede escribir así: Existe un número [tex]y[/tex] igual a un número [tex]x[/tex] restado por siete.
[tex]y = x-7[/tex]
d) El triple de un número más dos:
Esto se puede escribir así: Existe un número [tex]y[/tex] igual a un número [tex]x[/tex] multiplicado por tres y sumado por dos.
[tex]y = 3\cdot x +2[/tex]
e) El cuadrado de un número menos dos:
Esto se puede escribir así: Existe un número [tex]y[/tex] igual a un número [tex]x[/tex] elevado al cuadrado y restado por dos.
[tex]y = x^{2}-2[/tex]
f) El perímetro de un cuadrado:
El cuadrado es un cuadrilátero cuyos cuatro ángulos interiores y cuatro longitudes de lados son iguales son. Es decir, se puede escribir así: El perímetro de un cuadrado es igual a la longitud del lado multiplicado por cuatro.
[tex]p = 4\cdot x[/tex]
g) El cubo de un número menos uno:
Esto se puede escribir así: Existe un número [tex]y[/tex] igual a un número [tex]x[/tex] elevado al cubo y restado por uno.
[tex]y = x^{3}-1[/tex]
A boat is pulled into a dock by a rope attached to the bow of the boat and passing through a pulley on the dock that is 1 m higher than the bow of the boat. If the rope is pulled in at a rate of 1 m/s, how fast (in m/s) is the boat approaching the dock when it is 5 m from the dock
Answer:
dy/dt = 1.02 m/s
Step-by-step explanation:
First of all, let the distance of the dock above the bow of the boat be represented by x.
Also, let the distance of the boat from the dock be represented by y.
Let z represent the length of the rope.
Now, we can use pythagoras theorem to find a relationship between x, y and z since they form a right angle triangle where the vertical part is the dock, the base represents the water and the hypotenuse represents the rope.
Thus;
x² + y² = z²
Using implicit differentiation, we have;
2x(dx/dt) + 2y(dy/dt) = 2z(dz/dt)
We are given that the dock is 1 meter above the bow. Thus, x = 1
Also, the height is not changing and so dx/dt = 0
We are told the dock is 5 feet away from the boat. Thus, y = 5
dy/dt is is the speed we are looking for which is the rate at which the boat is approaching the dock.
We are not given the value of z but we can find it by using pythagoras theorem since we know the dock is 1 meter above the bow and the boat is 5 m away.
Thus;
z = √(1² + 5²)
z = √26
We are told the rope is being pulled in at the rate of 1 m/s. Thus; dz/dt = 1
Plugging all relevant values into the differentiation equation above gives;
2(1)(0) + 2(5)(dy/dt) = 2(√26)(1)
10(dy/dt) = 2√26
Divide both sides by 10 to get:
dy/dt = (√26)/5
dy/dt = 1.02 m/s
A homeowner wants to include a semicircular patio at the end of a square sandbox. She knows that the area of the semicircular patio is 25.12 cm. What is the length of the side of the square?
Answer:
8cm
Step-by-step explanation:
First you must know that the diameter of the semi-circular patio is equal to the length of one side of the square
Area of a semi circle = πr²/2
25.12 = πr²
25.12 = 3.14r²/2
r² = 25.12(2)/3.14
r² = 16
r = √16
r = 4
Get the diameter
d = 2r
d =2(4)
d = 8cm
Hence the length of the side of the square is 8cm
Convert 35 miles per hour to feet per second
Answer:
51.3333
Step-by-step explanation:
Multiply your speed in miles per hour by 5,280. This is the number of feet in a mile. The result is your speed in feet per hour. For example, 60 miles per hour times 5,280 feet per mile is 316,800 feet per hour.
4.) Find the value of x.
A. x=-7
B.x = 187
C.x = 83
D.x = -2
Answer:
Set siding
Step-by-step explanation:
Sjduwjj
What is the solution for the systems of equations below?
3x+4y=-2
2x-4y=-8
answers
x=2, y=-2
x=6, y=-5
x=4, y=4
x=-2, y=1
Tap A fills a tank in 4hours while B fills the same tank in 3hours. Tap C empties this tank when full in 2hours. If the tank is initially empty and all three taps are opened, how long will it take to fill the tank?
Answer:
It will take 12 hours to fill the tank
Step-by-step explanation:
Proportions
Tap A fills a tank in 4 hours. It means each hour it fills 1/4 of the tank.
Tap B fills the tank in 3 hours. Each hour it fills 1/3 of the tank.
Tap C empties the tank when full in 2 hours. Each hour it empties 1/2 of the tank.
Each hour, the tank gets filled by:
[tex]\displaystyle \frac{1}{4}+\frac{1}{3}-\frac{1}{2}=\displaystyle \frac{3}{12}+\frac{4}{12}-\frac{6}{12}=\frac{3+4-6}{12}=\frac{1}{12}[/tex]
Since the tank fills 1/12 of its capacity in one hour, it follows that it will take 12 hours to fill the tank
The fee for using a gym is $25 a year plus $3 for each visit. If someone visits v times a year, which expression represents the amount he or she pays per year?
Answer:
y=3v+25.............
Answer:
$25 + $3v
Step-by-step explanation:
$25 + $3v
