Step-by-step explanation:
2a - 7 - 6a = 9
- 4a - 7 = 9
- 4a = 16
a = -4
A small rectangle has a width of 4ft and a length of 10ft. A larger rectangle has a length of 12ft. What is the perimeter of the larger rectangle?
Answer:
48 I think
Step-by-step explanation:
12+12+12+12=48
or 12 x 4=48
Answer:
48
Step-by-step explanation:
12+12+12+12 = 48
or
12x4=48
cam wants to find 509-106. which steps can he use to find the difference
Answer:
C.
Step-by-step explanation:
the answer is 403
Answer:
C
Step-by-step explanation:
It wouldn't be A since 5 - 1 you would get 4 hundred not 4 tens. It wouldnt be B because 9 - 6 you would get 3 ones not 3 hundreds and 5-1 you would get 4 hundreds not 4 ones. It wouldnt be D because 9-6 would be 3 ones not 3 tens. Hope I helped ! Good luck !
I need help - TEST REVIEW TOMORROW
Answer:
65
Step-by-step explanation:
5x+15 and 7x-5 are alternate interior angles
between two parallel lines so these angles are congruent.
5x+15=7x-5
15+5=7x-5x
20=2x
x=10
7x-5=7*10-5=70-5=65
What is the quotient of (3x^4 – 4x^2 + 8x – 1) ÷ (x – 2)
Answer:
2 3 0 -4 8
+ 6 12 16
3 6 8 24
A：3x^3+6x^2+8x+24/x-2
Answer:
(3x^4-4x^2+8x-1)÷(x-2)
I need help write in line slope-intercept from
Answer:
Please check the explanation.
Step-by-step explanation:
The equation for the line in slope-intercept form is
[tex]y=mx+b[/tex]
where
m is the slopeb is the y-interceptFor example, a line of the form [tex]y=-3x+2[/tex] can be termed as the line of an equation in slope-intercept form after comparing with it.
[tex]y=-3x+2[/tex]
where
[tex]m=-3[/tex]y-intercept = b = 2Simplify:
8.7 + 3.2(2p – q) + 2.55 p
Answer:
8.95p-3.2q+8.7
Step-by-step explanation:
Answer:
8.95, 3.2, 8.7
Step-by-step explanation:
What are the solutions to this quadric equation? -2x^2 + x + 4 = 0
Answer:
(1-[tex]\sqrt{33}[/tex])/4 and (1+[tex]\sqrt{33}[/tex])/4
Step-by-step explanation:
-2x^2 + x + 4 = 0
use quadratic formula x= (-b±[tex]\sqrt{b^{2} -4ac}[/tex] ) / 2a
a=-2
b=1
c=4
x= (-1±[tex]\sqrt{1^{2} -4(-2)(4)}[/tex] ) / 2(-2)
x=(-1±[tex]\sqrt{33}[/tex] ) / -4
x=(1 -[tex]\sqrt{33}[/tex]) / 4 and (1 +[tex]\sqrt{33}[/tex]) / 4
Please answer correctly !!!!!!!!!!!!!!!!!!!!! Will mark brainliest !!!!!!!!!!!!!!!!!!!!!!!
i need help plz:((((((((((
Answer:
a) [tex]y=\frac{28}{75}(x-1900)+47.3[/tex]
b) 86.5 years
Step-by-step explanation:
All values are rounded to 2 decimal places
a) We can find line by using y =mx+b
[tex]y=mx+b\\m=\frac{y^{2}-y^{1} }{x^{2}-x^{1}}\\m=\frac{69.7-47.3}{1960-1900} \\m=\frac{22.4}{60} \\m=\frac{28}{75}\\c=y-intercept\\y-intercept=47.3\\y=\frac{28}{75} (x-1900)+47.3[/tex]
Therefore the line of best fit is [tex]y=\frac{28}{75}(x-1900)+47.3\\[/tex]
b) We can do this by using the formula of the best fit line to estimate the life expectancy of someone born in 2005
[tex]y=\frac{28}{75}(x-1900)+47.3\\y=\frac{28}{75}(2005-1900)+47.3\\y=\frac{28}{75}\times105+47.3\\y=86.5[/tex]
Therefore the estimated life expectancy of someone born in 2005 is 86.5 years
PS. Please give brainliest answer this was a lot of working out
GUYS Can you pls HElp me Ill GIve Brianliest to whoever has the right answer
Answer:
Y=X
Step-by-step explanation:
Answer: A
Step-by-step explanation:
rise/ run = 7/1
A store offers four different brands of product. It decides to eliminate the brand most that is likely to be returned. Which brand should the store eliminate?
Step-by-step explanation:
Do (returns : Total sold) x 100%. And do this for every brand, the brand with the highest percentage has to go
Answer:
Brand D
Step-by-step explanation:
Using this
(returns/total sold) x 100%. The brand with the highest decimal will be brand D
(22/457)x100 = 4.8
(10/328)x100 =3
(21/511)x100 = 4.1
(19/241)x100 = 7.8
The points in the table lie on a line. Find the slope of the line.
Answer:
1/2 is the slope of the line
!!HELP: 20 POINTS!!At the end of a snow storm, Jace saw there was a lot of snow on his front lawn. The temperature increased and the snow began to melt at a steady rate. The depth of snow on Jace's lawn, in inches, can be modeled by the equation S=15-1.5t,where t is the time, in hours, after the snow stopped falling. What is the y-intercept of the equation and what is its interpretation in the context of the problem?
Answer:
the y-intercept is 15 which is the initial total depth of the snow at t=0 hours.
The rate of melting is 1.5inches per hour. It will take 10 hours at the melting rate given of 1.5 to melt all the snow.
Step-by-step explanation:
the y-intercept is 15, and it might mean that the total depth of the snow is 15 inches.
The rate of melting is 1.5inches per hour.
At time = 0, S=15 - 1.5t = 15 - 1.5(0) = 15 inches to start
At time = 10, S=15 - 1.5t = 15 - 1.5(10) = 0 inches; meaning all snow has melted and it took 10 hours.
In the morning, a farm worker packed 3 pints of strawberries every 4 minutes. In the afternoon she packed 2 pints of strawberries every 3 minutes. What was the difference between her morning and afternoon packing rates, In pints per hour?
Answer:
ones bigger than the other
Step-by-step explanation:
im bored & not being helpful sorry
Answer:
its 5
Step-by-step explanation:
i aredy did the test
The price of Stock A at 9 A.M. was $15.75. Since then, the price has been increasing at the rate of $0.05 per hour. At noon, the price of Stock B was $16.53. It begins to decrease at a rate of $0.13 per hour. If the stocks continue to increase and decrease at the same rates, in how many hours will the prices of the stocks be the same?
The prices of the stocks will be the same
nothing hour(s) after noon.
Answer: I think is 3.5
Step-by-step explanation:
Plz help me with this question 10 points (I added a photo)
Answer:
Pretty sure its B
Step-by-step explanation:
HELPPO PLZZZZ
HELP HELP HELP HELP HELP HELP PLZ AND THANK U HELP HELP HELP HELP HELP HELP PLZ AND THANK U HELP HELP HELP HELP HELP HELP PLZ AND THANK U
In Lixue's garden, the green pepper plants grew 5 inches in 34 month. At this rate, how many feet can they grow in one month? (Let 5 inches = 512 feet)
Answer:
22/3 feet
Step-by-step explanation:
In Lixue's garden, the green pepper plants grew 5 inches in 3/4 month.
We need to find how many feet can they grow in one month.
Let 5 inches = 5 1/2 feet
It means,
The growth in 3/4 month = 5 inches = 11/2 feet
Growth in 1 month = [tex]\dfrac{\dfrac{11}{2}}{\dfrac{3}{4}}=\dfrac{22}{3}[/tex] feet
So, it will grow 22/3 feet in a month.
A line passes through the point (-4,9) and has a slope of
-3/2
Write an equation in point-slope form for this line.
Answer: y - 9 = (-3/2) (x - (-4))
Step-by-step explanation:
We can use the formula y-y1 = m(x-x1)
Where (x1,y1) are (-4, 9) and m = -3/2. Plug in the values and we get
y - 9 = (-3/2) (x - (-4))
Your salary is $65,788. If you work fifty 40-hour weeks in a year, what is your hourly wage?
Answer:
$31.63 per hour
Step-by-step explanation:
$31.63 per hour
40 hour weeks × 52 weeks = 2080 hours
65,788/2080= 31.63
hope this helped,brainliest?
A farmer owns a total of 12 acres of land . The land is separated into 5 2/5 equally sized sections . How many acres are in each section ?
Subtract 5x^2+8x-11 from 3x^2+8x-7
Graph the linear equation x=4.
A linear equation has only more than one additional, that may be expressed as [tex]\bold{ax + by = c}[/tex], and the further discussion can be defined as follows:
In this, No factor has been raised the power which is greater than one or utilized as the denominator of a fraction. When we discover pairs of values that satisfy a linear model and plot them on a coordinate grid, all the points fall on the same line.Please find the attached file of the graph.
Learn more:
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6 * 10^8 is how many times larger as 2 * 10^3
Answer:599998000Step-by-step explanation: their is your answer
Jimmy walks to his school every morning. He leaves home everyday at the same time. And the school starts at the same time everyday at 8 am. If he walks at 40 meters per minute, he will reach his school 5 minutes late. If he walks at 60 meters per minute, he will reach his school 3 minutes before the bell rings.
Answer: The bell rins at 8:19 AM, and the distance between Jimmy's house and the school is 960 meters.
Step-by-step explanation:
Let's define the variables:
T = Number of minutes after 8 AM such that the school's bell sounds.
D = Distance between jimmy's house and the school, in meters
And remember the relation:
Distance = Speed*Time.
We know that:
"If he walks at 40 meters per minute, he will reach his school 5 minutes late."
D = (T + 5)*40
"If he walks at 60 meters per minute, he will reach his school 3 minutes before the bell rings."
D = (T - 3)*60
Then we have a system of equations:
D = (T + 5)*40
D = (T - 3)*60
We can take the quotient of these two equations and get:
D/D = ((T + 5)*40 )/((T - 3)*60)
1 = (4/6)*(T + 5)/(T - 3)
Now let's solve this for T.
6/4 = (T + 5)/(T - 3)
(6/4)*T - (6/4)*3 = T + 5
(6/4)*T - T = 5 + (6/4)*3
T*(2/4) = 5 + 18/4 = 5 + 9/2
T = (4/2)*(5 + 9/2) = 19
Then the bell sounds 19 minutes after 8AM, at 8:19 AM
And with this, we can find the distance D:
D = (T + 5)*40 = (19 + 5)*40 = 960
The distance between Jimmy's house and the school is 960 meters.
Two friends, Caleb and Ynez are both selling brownies for a class
fundraiser. They decide to advertise how much buying a certain number of
brownies will cost in two different ways. Create an equation for the cost, c,
of n-brownies for Caleb's pricing.
Answer:
B. 1.25n = c
Step-by-step explanation:
Take one of the points. 20 and $16.
It will look like this 20/16n = c
20/16 = 1.25
1.25n = c
Hope this helps ya! Keep smiling!
The required equation is 1.25n = c where the cost is c and n-brownies for Caleb's pricing. which is the correct answer would be an option (B).
What is the equation?The equation is defined as mathematical statements that have a minimum of two terms containing variables or numbers that are equal.
Caleb and Ynez, two pals, are each selling brownies for a class fundraiser. They plan to publicize the price of a particular amount of brownies in two distinct ways.
We have been given that the graph
According to the given graph, we take two points 20 and $16.
Let the cost, c, and n-brownies for Caleb's pricing.
It will examine like this 20/16n = c
20/16 = 1.25
1.25n = c
Therefore, the required equation is 1.25n = c
Learn more about the equation here:
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Elliot has a total of 26 books. He has 12 more fiction books than nonfiction books. Let x represent the number of fiction books and y represent the number of nonfiction books.
This system of equations models the number of books.
x + y = 26
x – y = 12
Elliot added the two equations and the result was 2x = 38.
Solve the equation. How many fiction books does Elliot have?
fiction books
How many nonfiction books does Elliot have?
nonfiction books
Answer:
fiction= 19 books
non-fiction= 7 books
Step-by-step explanation:
hope this helps :)
Answer:
I'm terrible at explaining so here's a screenshot
- Ripper
Step-by-step explanation:
Y=2x and 5x-y=9 substitution
Answer:
3,6
Step-by-step explanation:
Plug 2x(y) into 5x -y = 9
5x -2x = 9
Add like terms.
3x = 9
Divide both sides by 3.
x = 3
Now, in order to find y, plug 3(x) into y = 2x
y = 2(3)
y = 6
The solution of system of equation is x=3 and y=6.
What is Equation?Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.
It demonstrates the equality of the relationship between the expressions printed on the left and right sides. LHS = RHS is a common mathematical formula.
Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.
Given:
y=2x .....................(1)
5x-y=9...............(2)
Now substitute the value of y in equation (2), we get
5x - 2x = 9
3x = 9
Divide both side by 3.
x= 3
and, y= 2x = 6
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Liberty Center Middle School has 1,200 students. In Sophia’s class, 3 out of 4 students borrowed library books. Based on these results, how many students at the school would you expect to borrow library books?
Answer:
We expect 900 students to borrow library books
Step-by-step explanation:
Proportions
If two variables are proportional, then one of them can be obtained as the other times a fixed number.
If x and y are proportional, then:
y=k.x
Where k is the constant of proportionality
The value of k can be obtained by dividing y/x.
That division, also called ratio gives us the proportion to be applied to future calculations.
In Sophia's class, 3 out of 4 students borrowed library books.
This gives us a proportion ratio of 3/4.
If we apply that same proportion to the rest of the Liberty Center Middle School, with 1,200 students, then, we expect to have
3 / 4 * 1200 = 900 students borrowing library books.
We expect 900 students to borrow library books
A car travels 62 miles per hour. At this rate, how far will the car travel in 6 hours?
Answer:
372 miles
Step-by-step explanation:
You need to multiply 62 and 6
Answer:
372
Step-by-step explanation:
just mulitple
i hope thi shelps
BRAINLIEST PLSSS
