Answer:
9x^2
Step-by-step explanation:
It is given that:
x ( x + y ) = 27
If one manipulates the equation, by dividing by x, they get:
x + y = 27/x
It is also given that:
y ( x + y ) = 54
Again, manipulate the equation, only this time, divide by y,
x + y = 54/y
It is obvious that;
x + y = x + y
Yet this was proven;
x + y = 27/x
x + y = 54/y
Therefore, the following has to be true;
27/x = 54/y
To sove the proportion, use cross products;
27/x = 54/y
54x = 27y
Inverse operations:
54x = 27y
/27 /27
y = 2x
Substitute;
(x + y)
y = 2x
= (x + 2x)
= 3x
Now solve:
(3x)^2
9x^2
Which of the following situations could be described by the expression m – 1.85?
A. Rosalita ran 1.85 miles yesterday, and m miles fewer today. How many miles did she run today?
B. Rosalita ran m miles yesterday, and 1.85 miles farther today. How many miles did she run today?
C. Rosalita ran 1.85 miles yesterday, and m miles farther today. How many miles did she run today?
D. Rosalita ran m miles yesterday, and 1.85 miles fewer today. How many miles did she run today?
Pls help with these 4 questions!
Answer:
It is A.
Step-by-step explanation:
also, this is one question. A, B, C and D are just answers.
Answer:3.233
Step-by-step explanation:
Taco Delight gives a free taco to every 12th customer and a free dessert to every 15th customer. Which customer would be the first one to receive both a free taco and a free dessert? Which customer would be the second one to receive a free taco and free desert?
Answer:
8th customer when i did the math
Step-by-step explanation:
...
Answer:
the first person to get a free taco would be the 60th customer since 60 is a common multiple of both 12 and 15 and I believe the second would be 120th customer
-3x > 12. Help thanks
Answer:
x<-4 i hope i help plz mark me brailist
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[tex] - 3x > 12[/tex]
Add sides 3x
[tex] + 3x - 3x > + 3x + 12[/tex]
[tex]0 > 3x + 12[/tex]
[tex]3x + 12 < 0[/tex]
Subtract sides 12
[tex]3x + 12 - 12 < 0- 12[/tex]
[tex]3x < - 12[/tex]
Divide sides by 3
[tex] \frac{3x}{3} < \frac{ - 12}{3} \\ [/tex]
[tex]x < - 4[/tex]
♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️
Ahaha I hate everything jk lol but fr tho what is 4+4?
Answer:
8
Step-by-step explanation:
4 + 4 = 8
Which equation has the solution x = 5?
Select EACH correct answer.
25x+4=9
3x + 1 = 9
x5+5=6
18−2x=9
11 + 6x = 22
32−4x=12
Answer:
if your in k12 6.03 Quiz: Solve Equations by Substitution this should be right
Step-by-step explanation:
btw if ur not in k12 it should still be right
Are the shapes similar?
Yes
No
Attached photo above
Answer:
yes
Step-by-step explanation:
They are both robasus and both have parallel lines
Please help? tysvm! :D
Answer:
Area: C
Perimeter: A
Volume: B
cubic units: D
Answer:
Area=C
Perimeter= A
Volume=B
Cubic Units= D
Step-by-step explanation:
Area is the amount of 2-dimensional object.
Perimeter is the distance around a two-dimensional object.
Volume is the number of cubic units needed to fill the space inside a three-dimensional figure.
Cubic Units is the unit used to measure volume
Write 2 4/7 as an improper fraction
Answer:
18/7
Step-by-step explanation:
you multiply 2 by seven and then add four to the numerator while you keep the denomenator
Answer:
18/7Step-by-step explanation:
[tex]2\frac{4} {7} \\\\=\frac{7\times2+4}{7} \\\\=\frac{14+4}{7}\\\\=\frac{18}{7}[/tex]
PLEASE ANSWER
Students in the science lab are measuring the mass of an object on a triple beam balance. The object has a mass of 38 grams. Complete the table below with the absolute and percent error for each students’ measurement. Round your answer to the nearest tenths place.
Answer:
The answer is 40
Step-by-step explanation:
have a nice day!
The absolute error of Danielle, Iris, and HB is 2,6 and 1 gram respectively. The percentage error of Danielle, Iris, and HB are 5%,15%, and 2.5% respectively.
What is the percentage?The percentage is defined as a given amount in every hundred. It is a fraction with 100 as the denominator percentage is represented by the one symbol %.
The percentage is also called the indicating hundredths. Thus, 2% is two-hundredth, which means 2%=2/100=0.02.
As per the given,
Actual mass = 38
Danielle error = 40 - 38 = 2 grams
% error = 2/40 x 100 = 5%
Iris error = 4 - 34 = 6 grams
% error = 6/40 x 100 = 15%
HB error = 41 - 40 = 1 grams
% error = 1/40 x 100 = 2.5%
Hence "The absolute error of Danielle, Iris, and HB is 2,6 and 1 gram respectively. The percentage error of Danielle, Iris, and HB are 5%,15%, and 2.5% respectively".
For more about the percentage,
brainly.com/question/13450942
#SPJ2
its for science but its got math involved
its got to do with speed, time, and distance
The population of Austin, Texas in 1980 was 346,000 people. The population in 1990 was 472,000 people. What is the rate of change of the population with respect to the year for this function?
Answer:
12.6 thousand a year
Step-by-step explanation:
take the 346 add 126 thousand to it equaling a good 472 thousand divide 126 thousand by 10 cause it is a ten year span that equals you get 12.6 thousand.
I need brainliest please
We want to find the rate of change of the population of Austin, Texas in the years between 1980 and 1990.
The answer is: r = 12,600 people/year.
We will assume that this increase in population is modeled with a linear equation, remember that a general linear equation is:
y = a*x + b
Where the rate of change, or slope, is a.
We know that if a line passes through two points (x₁, y₁) and (x₂, y₂) the slope is given by the formula:
[tex]a = \frac{y_2 - y_1}{x_2 - x_1}[/tex]
For this case we have two points, these are:
(1980, 346,000)
(1990, 472,000)
Then the slope or rate of change is just:
[tex]a = \frac{472,000 - 346,000}{1990 - 1980} = 12,600[/tex]
To be complete we need to add the correspondent units, which are people per year.
Then the rate of change is:
r = 12,600 people/year.
If you want to learn more, you can read:
https://brainly.com/question/18904995
What is the x and y intercept of the following function
y=1-x
Find the Probability of P(bankrupt)
Relationship B has a lesser rate than Relationship A. Does this graph represent Relationship A. What table could represent Relationship B?
{Time (weeks) 3 6 8 10
{ Plant growth (in.) 4.8 9.6 12.8 16
{Time (weeks) 3 4 6 9
{Plant growth (in.) 6.3 8.4 12.6 18.9
{Time (weeks) 3 6 8 10
{Plant growth (in.) 2.25 4.5 6 7.5
{Time (weeks) 3 4 6 9
{ Plant growth (in.) 5.4 7.2 10.8 16.2
The first-quadrant graph showing a ray from the origin through the points begin ordered pair 2 comma 3 ends ordered pair and begin ordered pair 4 comma 6 end ordered pair. The horizontal axis label is Time in weeks. The vertical axis label is Plant growth in inches.
Answer:
the answer im pretty sure is A. (weeks) 3 6 8 10 (in) 4.8 9.6 12.8 16
Step-by-step explanation:
Can someone help me please
Answer:
The slope is [tex]\frac{1}{2}[/tex]
Step-by-step explanation:
If you graph out the points on a line, you can clearly see that the rise between the points on the graph is 2, while the run is 4. This would give you [tex]\frac{2}{4}[/tex], so if you simplify the fraction, you would get [tex]\frac{1}{2}[/tex].
plz help quick. the sum of two numbers is 11. Three times the first number minus the second number is -3. what are the numbers?
Answer:
the first number is 2, the second number is 9 :)
Step-by-step explanation:
brainliest? :)
PLEASE HELP ASAP!!!!!!!!!!!!!!!!!!
Answer:
2.4x-4.4
Step-by-step explanation:
0.3(4x-8)=1.2x-2.4
-0.5(2.4x+4)=1.2x-2
1.2x-2.4+1.2x-2=2.4x-4.4
A store buys cell phones from the manufacturer for $34.40 and marks them up by 85%. What is the sale price of the phones in the store?
Answer:
$5.16
Step-by-step explanation:
34.40 divided by .85 is 29.24. Subtract the diffrence of 34,40 and 29.24 which is $5.16. Hope this helps :)
PLZ HELP I NEED HELP i've try solving it but i never get it right PLZ HELP
Answer: and the answer is 2x + 7
Step-by-step explanation:
as it is a polynomial in one variable, it has only one solution.
Hope it helped u,
pls mark as the brainliest
^_^
He reflected awhile, rubbing his nose and cheeks, then skirted to the left, stepping gingerly and testing the footing for each step.
What does it mean if he stepping gingerly?
Which of the following expressions represent the distance between -6 and 7 on the number line?
Answer:
C
Step-by-step explanation:
The lines mean the distance away from 0. When i say lines, I mean the two "l" that accompany the numbers. I forgot what there called (good job me).
Since we want to know how far apart they are, we need to add them.
Answer: If the equations are in absolute value then C, D, F. IF not in absolute value than just F.
Step-by-step explanation:
there is a distance of 13 between the two points so find any that have a total of 13.
A plastic bin contains red, yellow, and green key chains. Out of 350 key chains, 10% percent are yellow. Of the remaining key chains, are green. How many red key chains are inside the bin?
A.
26
B.
35
C.
126
D.
189
Answer:
c.126 red
Step-by-step explanation:
red+green+yellow=350
10% out of 350 are yellow
0.1 times 350=35
350-35=315
3/5 out of 315 are green
red is not green so
2/5 of what is left is red
2/5 of 315 is red
2/5 times 315=430/5=126
126 red
im a bit confused so please help me quick!
Research discovered that the ratio of regular coffee drinkers to regular tea drinkers in Canada is 4:1. Jack concluded from this that if 400 people were surveyed, 100 of them would most likely be regular tea drinkers. Is he correct? Explain.
Answer:
yes you are correct
Step-by-step explanation:
HELp with this l would give you brainlist
Answer:
10
Step-by-step explanation:
So if you know that 10 skeins makes 4 scarves... then 20 skeins makes 8 scarves (because you doubled it)
and if 10 skeins make 4 scarves... then half that number of skeins should make half the number of scarves... so 5 skeins makes 2 scarves
So we know that 20 skeins makes 8 scarves and 5 skeins make 2 scarves... all we have to do is add up the skeins and find we get 10 scarves
evaluate the expression | 10 | =
Answer:
10
you go positive for negative numbers and stay positive for positive numbers
Answer:
before i answer this, do you still need help with this question???
Step-by-step explanation:
Don't you just hate missing 2 weeks of school and coming back to this.
:) Please help am stupid.
Answer:
x would = 10 and y would = 5
what is 11/15 +[-7/12 = ?
Answer: 3/20
Step-by-step explanation:
help would be nice :p *pls don't leave this qestion.....I will cry :|*
Which is the best description of the equivalency of the two expressions?
Expression 1
5 x squared minus 2 x minus 4 + 6 x + 3
Expression 2
6 x squared minus 6 x + 6 minus x squared + 10 x minus 7
A.) The two expressions are not equivalent because when x = 2, the two expressions do not have the same value.
b.)The two expressions are not equivalent because when they are simplified, they do not have the same coefficients for the x squared and x terms.
c.) They are equivalent because the sum of the constants is the same in both expressions.
D.) They are equivalent because when x = 2, the two expressions have the same value.
Answer:
D
Step-by-step explanation:
i think its D hope this helped!
Fill in the blank to make it a true statement: 50 ___ |-50|
Group of answer choices
=
Answer:< i took this quiz
Step-by-step explanation: