Answer:
y=-1x+4
Step-by-step explanation:
Pls answer a and b!!!!!
Answer:
a) the answer is 2/21
b) the answer is 6
1-4x/2x+1=4/1-5x
solve in quadratic equations
Answer:
I can only assume that the entire 1-4x is divided by 2x, and 4 by all of 1 - 5x. You can guarantee more accurate results by using brackets where appropriate. If I read that expression with the correct notation, it reads as [tex]1 - \frac{4x}{2x} + 1 = \frac{4}{1} - 5x[/tex].
Assuming instead that it's meant as [tex]\frac{1 - 4x}{2x + 1} = \frac{4}{1 - 5x}[/tex], we can solve it as shown below, giving us x values of 1 and 3/20 (or 0.15).
Step-by-step explanation:
First let's reformat this to the usual ax² + bx + c format:
[tex]\frac{1 - 4x}{2x + 1} = \frac{4}{1 - 5x}\\(1 - 4x)(1 - 5x) = 4(2x + 1)\\1 - 5x - 4x + 20x^2 = 8x + 4\\20x^2 - 5x - 4x - 8x + 1 - 4 = 0\\20x^2 - 17x - 3 = 0[/tex]
Let's solve it with the quadratic formula:
[tex]x = \frac{-b \pm \sqrt{b^2 - 4ac} }{2a}\\\\x = \frac{17 \pm \sqrt{-17^2 - 4\times 20 \times( -3)} }{2\times20}\\\\x = \frac{17 \pm \sqrt{289 + 240} }{40}\\\\x = \frac{17 \pm 23 }{40}\\\\x = 1, \frac{3}{20}[/tex]
A watering can dispenses water at the rate of 0.3 gallon per minute. The original volume of water in the can was 7 gallons. Which set of ordered pairs shows the volume of water in the can in gallons (y), as a function of time in minutes (x), from the first minute after the can starts dispensing water? (1 point)
{(1, 6.7), (2, 6.4), (3, 6.1)}
{(1, 7.0), (2, 6.7), (3, 6.4)}
{(6.7, 1), (6.4, 2), (6.1, 3)}
{(7.0, 1), (6.7, 2), (6.4, 3)}
Answer:
The correct ordered pairs are:
{(1, 6.7), (2, 6.4), (3, 6.1)}
Option A is correct.
Step-by-step explanation:
A watering can dispenses water at the rate = 0.3 gallon per minute
The original volume of water in the can = 7 gallons.
Which set of ordered pairs shows the volume of water in the can in gallons (y), as a function of time in minutes (x), from the first minute after the can starts dispensing water?
First making the function:
The the volume of water in the can in gallons is represented by y and time in minutes is represented by x. Initially the volume is 7 gallons, after than water dispense at rate of 0.3 gallon per minute so, the function will be:
y=7-0.3(x)
Now, putting values to find ordered pairs
So, when time is 1 minute i.e x = 1
y=7-0.3(1)
y=7-0.3
y=6.7
So, when x=1, y=6.7 the ordered pair is: (1,6.7)
when time is 2 minutes i.e x = 2
y=7-0.3(2)
y=7-0.6
y=6.4
So, when x=2, y=6.4 the ordered pair is: (2,6.4)
when time is 3 minutes i.e x = 3
y=7-0.3(3)
y=7-0.9
y=6.1
So, when x=3, y=6.1 the ordered pair is: (3,6.1)
So, the correct ordered pairs are:
{(1, 6.7), (2, 6.4), (3, 6.1)}
Option A is correct.
Did you know that Geico can help u save 15 % or more on car insurance??
Answer:
Wow really??? I never would thought
Step-by-step explanation:
Answer:
With just a 15 minute call my guy
Step-by-step explanation:
which number line shows the solution of 5x - 25 greater than -15
Answer:
you need to add number lines, but if you want the equation to be written and solved, then...
Step-by-step explanation:
5x - 25 > -15
+25 +25
5x > 10
divide both sides by 5
x > 2
Hope this helps!!!
Brainliest if correct please help
Answer:
Its G
Step-by-step explanation:
What is the largest positive integer that would make the
following inequality true?
5x – 3 < 17
Answer:
3
Step-by-step explanation:
5(3)-3=12 yes
5(4)-4=17 no
3
can someone please help me with this whole page asap !!!
A bakery sells mocha cupcakes and chocolate cupcakes. One day it sold 28 mocha and
52 chocolate. What percent of the cupcakes sold that day were mocha?
Answer:
35% of the cupcakes were Mocha.
Step-by-step explanation:
So, 28 + 52 = 80 which means the question is: 28 is what percent % of 80? And 28 is 35% of 80. Hope I helped! Sorry if not. Have a wonderful day and an even better Christmas break! Remwmber to focus on the positive and give me a follow! ;) Bye!
A publishing company conducted a survey asking readers whether they use e-readers. Of the 3,000 readers surveyed, 1,954 said they read books on an e-reader. Use this information to complete the statement. Round your answers to the nearest hundredth.
Answer: See explanation
Step-by-step explanation:
You didn't say what you would like to calculate but based on tbe information given in the question, I guess that you want to calculate the percentage of readers who use an e-reader. This will be:
Number of readers surveyed = 3,000
Number of readers reading on e-reader = 1,954
Percentage of e-readers would then be:
= (1954 / 3000) × 100
= 65.13%
A set of average city temperatures in December are normally distributed with a mean of 16.3 degrees C and a standard deviation of 2 degrees C.
∘What proportion of temperatures are between 12.9 degrees C and 14.9 degrees C?
you may round your answer four decimal places.
Answer: 0.1974
Step-by-step explanation:
z1 = (12.9 - 16.3)/2 = (-3.4)/2 = -1.7
Z2 = (14.9 - 16.3)/2 = (-1.4/2) = -0.7
“Z table”
Z1= -1.7 ~ 0.0446
Z2 = -0.7 ~ 0.242
0.2420 - 0.0446= 0.1974
A bag of marbles contains 5 red marbles, 5 green marbles, 5 yellow marbles and 5 blue marbles. If Mya takes one marble at a time at random, what is the probability that she takes out a red marble the first time and a green marble the second?
Answer:
The probability that she takes out a red marble the first time and a green marble the second
P(E₁ ∩ E₂ ) = P(E₁) P(E₂)
[tex]= \frac{5 X 5}{20} = \frac{25}{20} = \frac{5}{4} ways[/tex]
Step-by-step explanation:
Step(i):-
Given a bag of marbles contains 5 red marbles, 5 green marbles, 5 yellow marbles and 5 blue marbles
Total balls n(S) = 5red +5green +5yellow + 5blue = 20
Total numbers cases
n(S) = 20C₁ = 20 ways
Step(ii):-
Let E₁ be the event of drawing one red marble from 5 red balls
n(E₁) = 5C₁
Let E₂ be the event of drawing one green marble from 5 green balls
n(E₂) = 5C₁
The two events are independent events
P(E₁ ∩ E₂ ) = P(E₁) P(E₂)
=[tex]= \frac{5 X 5}{20} = \frac{25}{20} = \frac{5}{4} ways[/tex]
Final answer:-
The probability that she takes out a red marble the first time and a green marble the second
P(E₁ ∩ E₂ ) = P(E₁) P(E₂)
=[tex]= \frac{5 X 5}{20} = \frac{25}{20} = \frac{5}{4} ways[/tex]
Solve the system of linear equations using elimination.
-5x + 3y = -19
-x – 3y = -11
What the first person said
The cost of a desktop computer sells for $1150. The store has a sale on computers for 35% off. How much did the customer pay for the computer?
Answer:
Should be 747.50 dollars
Step-by-step explanation:
So if your own a calculator you can simply type 1150 times .35 which is the percentage of 35 converted into a decimal , once you multiply you should get 402.5, you get that 402.5 and subtract it from 747.50 dollars
Answer:
Step-by-step explanation:
10%=115 so do 115 times 3 which is 345 so half that and and in terms of money that'll be 57.50 so do 345+57.50 and thats $502.50
Please help me whoever answers correctly I’ll give you a Brainly
A professional hockey team has 15 wingers. 5 of these wingers are 30-goal scorers. Every fall the team plays an exhibition game with the club’s farm team. In order to make the match more interesting for the fans, the coaches agree to select two wingers at random from the pro team to play for the farm team. What is the probability that two of the 30-goal scorers are selected to play for the farm team?
Answer:
Step-by-step explanation:
Find the percent change from the first value to the second. Round to the nearest percent.
96; 72
Answer:
25% decrease
Step-by-step explanation:
An online clothing company sells custom sweatshirts. The company charges $ for shipping plus $ for each sweatshirt. Write a linear function rule that models the total cost y (in dollars) for any number of sweatshirts x.
Complete question :
An online clothing company sells custom sweatshirts. The company charges $4.99 for shipping plus $7.50 for each sweatshirt. Write a linear function rule that models the total cost y (in dollars) for any number of sweatshirts x.
Answer:
y = 7.50x + 4.99
Step-by-step explanation:
Given that :
Shipping fee = 4.99
Cost per shirt = 7.50
Writing the relation in the form of a linear equation :
General form of a linear function :
y = mx + c
Where m = slope ; c = intercept
The total cost of ordering x sweatshirts :
y = (cost per sweatshirt * number ordered) + shipping fee
y = 7.50x + 4.99
Answer:
the answer is $7.99
Step-by-step explanation:
What is the measurement of
127^*
A.13
В.35
С.53
D.73
Answer:
C
Step-by-step explanation:
Because if you do the multiplication then you would know that it was c
PLEASE HELP I’M GIVING 15 POINTS
Sorry but I don't see any pictureessss--
What am I supposed to be answering??
Welp-
Sawarasenai kimi wa shoujo na no?~
please hurry this is Algebra 1!!!
Answer: A
[tex]256a^{20} b^{24}[/tex]
In August 2009 2009 2009 2009 , Usain Bolt ran 100 100 100 100 meters in 9.58 9.58 9.58 9, point, 58 seconds ( sec ) (\text{sec}) (sec) left parenthesis, start text, s, e, c, end text, right parenthesis , setting the world record at that time. There are approximately 1.094 1.094 1.094 1, point, 094 yards ( yd ) (\text{yd}) (yd) left parenthesis, start text, y, d, end text, right parenthesis in a meter. What was Usain Bolt's average speed in yards per second?
Answer:
v = 11.41 yards/second
Step-by-step explanation:
Given that,
In August 2009, Usain Bolt run 100 m in 9.58 seconds.
1 yard = 0.9144 m
It means,
100 m = 109.361 yards
We need to find Usain Bolt's average speed in yards per second.
Average speed = total distance/time taken
[tex]v=\dfrac{109.361\ \text{Yards}}{9.58\ \text{seconds}}\\\\=11.41\ \text{Yards/second}[/tex]
So, her average speed is 11.41 yards/second.
For a field trip 4 students rode in cars and the rest filled nine buses. How many students were in each bus if 472 students were on the trip?
Answer:
There were 52 students on each bus.
Step-by-step explanation:
Let's break this down into an equation:
Total Students
=
Number of Buses
×
Students per Bus
+
Students in Cars
We have the following information:
Total Students
=
472
Number of Buses
=
9
Students in Cars
=
4
Filling this into the equation, we get
472
=
9
×
Students per Bus
+
4
Subtracting
4
from each side of the equation, we get
468
=
9
×
Students per Bus
Dividing each side of the equation by
9
, we get the final result of
52
=
Students per Bus
Thus there were
52
students on each bus.
For a field trip, 4 students rode in cars and the rest filled nine buses. 52 students were on each bus, and 472 students were on the trip. To obtain the number of students, the concept of division is used.
The division is an arithmetic operation that involves splitting a quantity or number into equal parts or groups. It is the inverse operation of multiplication. In division, a number called the dividend is divided by another number called the divisor to obtain the quotient.
The dividend is the total quantity or number being divided, while the divisor is the number by which the dividend is divided. The result of the division is called the quotient, which represents the number of times the divisor can be subtracted from the dividend to achieve equal parts.
Let's assume the number of students on each bus is x.
Since there were 4 students riding in cars, the number of students on buses is (472 - 4) = 468.
According to the question,
Number of buses = [tex]\frac{468}{x}[/tex]
As there were nine buses, so set up an equation,
[tex]\frac{468}{x}[/tex] = 9,
468 = 9x
x = [tex]\frac{468}{9}[/tex]
x = 52.
Therefore, there were 52 students on each bus.
Learn more about division here:
https://brainly.com/question/2273245
#SPJ6
List all the information given in the diagram
Zach is saving money to purchase a car. He has already saved $800 in an account. He is going to deposit $75 in the account every week He will not make any withdrawals or any other deposits
Part B
If Zach saves his money for 24 weeks, use your equation to find how much money he will have saved. Show your work and explain your answer. If the answer is correct I will award brainiest.
Answer:
$2600 I believe
Step-by-step explanation:
Since he puts $75 in his account every week and he save his money for 24 weeks, 75 times 24= 1800 and he already had $800 in his account, so 1800+ 800= 2600
Jessica's has a rectangualr walkway that is 21 yards long and 2/3 yard wide. What is the area of Jessica's walkway?
Answer:
14 yards²
Step-by-step explanation:
Area of rectangle
=l×w
=21×2/3 yards²
=7×2 "
=14 "
Can u someone plz helpppp meee... i put so many points
The answer is is 30.59
Answer:
about 75.4
Step-by-step explanation:
V=πr^2h/3
radius is half of diameter
so the radius is 6
add 8 to 10, multiply the result by v, then raise what you have to the 4th power
What is the value of x in the figure shown below?
Answer: 100 degress
Step-by-step explanation:
35+65=100
180-100
Angle = 80 degrees
x=100
Which point is a point where the graph of y= (x + 2)(x2 + 4x+3) crosses the x-axis?
A. (-3,0)
B. (2,0)
C. (1,0)
D. (3,0)
Answer:
A. (-3, 0)
Step-by-step explanation:
There should seemingly be 3 points where this graph crosses the x-axis. To determine each of them we can respectively set y to 0;
0 = (x+2)(x^2 + 4x + 3),
A quick way we can factor x^2 + 4x + 3 is using Vieta's Theorem. I don't ideally use it but since x1 * x2 = 3, and x1 + x2 = - 4 then x1 = -1 and x2 = -3. Since these are the roots the factored expression should be (x + 1)(x + 3).
0 = (x+ 2)(x +1)(x + 3),
x = -2, x= - 1, x= - 3
So the x-intercepts are (-2,0), (-1, 0), and (-3,0)
Your answer is option a
