Answer:
when x = 3 1/3, y = 4.5
or
when x =3 , y = 5
Step-by-step explanation:
Here, we want to solve using substitution
xy = 15
let x = 15/y
Put this into the first equation;
3(15/y) + 2y = 19
45/y + 2y = 19
Multiply through by y
45 + 2y^2 = 19y
2y^2 -19y + 45 = 0
2y^2 - 10y - 9y + 45 = 0
2y(y-5) -9(y-5) = 0
(2y-9)(y-5) = 0
2y-9 = 0
or y-5 = 0
2y = 9 or y = 5
y = 9/2 or y = 5
y = 4.5 or y = 5
Recall;
x = 15/y
x = 15/4.5 or x = 15/5
x = 3 1/3 or x = 3
Help ASAP please Ahhhhh
Answer:its A
Step-by-step explanation:
Answer:
Your answer would be A. Your welcome
Lucy uses a code to open a lock.
The code is a letter followed by a 2-digit number.
The letter is L or U.
The number is a prime number between 20 and 30
Write down all the possibilities for Lucy's code.
Answer:
L23
L29
U23
U29
Step-by-step explanation:
We have two elements for the code:
Letter: The options are L and U.
Number: A prime number between 20 and 30, the options here are:
23, 29 (These are the only two prime numbers between 20 and 30)
Then the possible combinations are:
L23
L29
U23
U29
I WILL GIVE BRIANLIEST!!!!!!!!
Please, I really need to get these right because I’m redoing it for full credit and I have an F in math, help me with as many as you can but don’t guess because I really need this. Even if you see other people’s answers, please give me your feedback still.
Answer: This might be a little too late but I believe the answer is 2; distance increases by 2 miles per hour. I hope you have a great day and good luck!
You have purchased a 30-pound case of lemons that has a count size of 96. About how many ounces would each lemon weigh?
Answer:
I think it would be 3.2 ounces because 96 divided by 30 is 3.2
Step-by-step explanation:
Mr. And Mrs. Jenkins wanted to make a down payment of $25,000 on a house. If the house costs $125,000, what percent is this?
Answer:
20%
Step-by-step explanation:
Mr. And Mrs. Jenkins wanted to make a down payment of $25,000 on a house. If the house costs $125,000, what percent is this?
The Percentage of the down payment is given as:
Down payment/Cost of the house × 100
Down payment = $25,000
Cost of the house = $125,000
$25,000/$125,000 × 100
= 20%
The percentage is 20%
factorise 343m^3 + 27n^3
answer:m3+27n3
Step-by-step explanation:
Rewrite
27
n
3
as
(
3
n
)
3
.
m
3
+
(
3
n
)
3
Since both terms are perfect cubes, factor using the sum of cubes formula,
a
3
+
b
3
=
(
a
+
b
)
(
a
2
−
a
b
+
b
2
)
where
a
=
m
and
b
=
3
n
.
Hope it helps ☺️☺️☺️
Find the area...
HURRY!!!!!
Answer: 38
Step-by-step explanation:
17.) An ostrich can run 174 feet in 3 seconds. What is the slope of the line and what does it
represent?
Q1 - Understanding simultaneous equations
Solve these simultaneous equations.
4 pillows and 5 quilts cost $57
9 pillows and 5 quilts cost $72
Find the cost of one of each.
4p + 59 = 57
9p + 59 = 72
P =
and q =
3 apple pies and 5 banoffee cost $28
3 apple pies and 7 banoffee cost $38
Find the cost of one of each.
3a + 5b = 28
3a + 2b = 38
a =
C
and b =
6 mugs and 3 plates cost $21
3 mugs and 3 plates cost $15
Write down and solve simultaneous
equations (m is the cost of a mug and
p is the cost of a plate, in $).
cal
m =
and p =
[
0
In ΔSTU, the measure of ∠U=90°, TS = 41, UT = 9, and SU = 40. What is the value of the sine of ∠S to the nearest hundredth?
Answer:
Step-by-step explanation:
sinS = 9/41 ≅ 0.22°
whats does espanol mean
Answer:
Spanish.
Step-by-step explanation:
It is the language Spanish but the word is in spanish hahahahahah.
Subtract 4x2 – 7x +6 from 2x2 – 5x – 4. Express as a trinomial
Answer: -2x²+2x-10
Step-by-step explanation:
Rephrase the expression
Subtract 4x²-7x+6 from 2x²-5x-4
(2x²-5x-4)-(4x²-7x+6)
Expand parenthesis
2x²-5x-4-4x²+7x-6
Put like terms together
(2x²-4x²)+(7x-5x)-(4+6)
Combine like terms
-2x²+2x-10
Hope this helps!! :)
Please let me know if you have any questions
I need help..........
Answer:
[C] 3 ⅔Explanation:
5 ⅓ - 1 ⅔
= 3 ⅔
how many solutions does 4x+1=3x+2
one solution
no solution
infinitely many solutions
Answer:
one solution
Step-by-step explanation:
If you simplify the equation, it becomes 1x+1=2. Then you subtract the 1 from 2 and get 1x=1. Therefore, x=1 which is ONE SOLUTION.
Solve for x
5/6 = x/4
Answer:
hi
Step-by-step explanation:
hi
Answer:
it would be x= 10/3
Step-by-step explanation: If this answer is incorrect my apologies.
GOOD AT MATH!! PLEASE HELPPP
Answer:
B. 5
Step-by-step explanation:
Use the pythagorean theorem to solve: [tex]a^{2}[/tex]+[tex]b^{2}[/tex]=[tex]c^{2}[/tex].
[tex]a^{2}[/tex]+[tex]12^{2}[/tex]=[tex]13^{2}[/tex]
[tex]a^{2}[/tex]+144=169
Subtract 144 from 169.
[tex]a^{2}[/tex]-144=169-144
[tex]a^{2}[/tex]=25
Square root to get a.
[tex]\sqrt{a}[/tex]=[tex]\sqrt{25}[/tex]
a= 5
A leaf fell into a river and traveled 140 meters in 4 minutes
How many meters did the leaf travel per minute?
Answer:
35 meters per minute
Step-by-step explanation:
140 meters/4 minutes = 35 meters/minute
Answer:
35 meters per minute
Step-by-step explanation:
140÷4=35
35 meters per minute
please I am struggling really bad help me
Solve the equation
x+4=3(3x-4)
Answer:
x = 2
Step-by-step explanation:
Nine friends share 8 bags of trail mix equally.what fraction of a bag of trail mix does each friend get?
Answer:
By doing 3 divided by 5, you will get 3/5 of trail mix per person.
Step-by-step explanation:
The fraction of a bag of trail mix each friend gets will be 8/9.
What is Algebra?Algebra is the study of abstract symbols, while logic is the manipulation of all those ideas.
The acronym PEMDAS stands for Parenthesis, Exponent, Multiplication, Division, Addition, and Subtraction. This approach is used to answer the problem correctly and completely.
Nine friends share 8 bags of trail mix equally.
Then the fraction of a bag of trail mix each friend gets will be given by the division of the number 8 by 9. Then the fraction is given as,
⇒ 8 / 9
The fraction of a bag of trail mix each friend gets will be 8/9.
More about the Algebra link is given below.
https://brainly.com/question/953809
#SPJ2
Oliver buys 4 pineapples. Each pineapple is
$2 off the original price. He pays $4. What is
the original price of a pineapple?
Answer:
hello
Step-by-step explanation:
Sally is 4 years older than Brody. Evelyn is 3 times older than Brody. If Brody's age is represented by x, create an expression that represents the total age of all three people.
A.4x+4
B. 5x
C.5x+4
D.7x
Answer:
Its C. 5x +4
Step-by-step explanation:
The expression that represents the total age of all three people is f(x) = 5x + 4.
What is a mathematical function, equation and expression?function : In mathematics, a function from a set X to a set Y assigns to each element of X exactly one element of Y. The set X is called the domain of the function and the set Y is called the codomain of the function.expression : A mathematical expression is made up of terms (constants and variables) separated by mathematical operators.equation : A mathematical equation is used to equate two expressions.Given is that Sally who is 4 years older than Brody. Evelyn is 3 times older than Brody.
Assume that Brody's age is represented by [x]. Then, the age of Evelyn will be (3x) and the age of Sally would be (x + 4). The expression that represents the total age of all three people is -
f(x) = x + (x + 4) + 3x = 5x + 4
f(x) = 5x + 4
Therefore, the expression that represents the total age of all three people is f(x) = 5x + 4.
To solve more questions on functions, expressions and polynomials, visit the link below -
brainly.com/question/17421223
#SPJ6
for the pairs below put each question in slope intercept form and whether the graphs of the line will be identical, parallel, or intersecting, Also determine how many solutions the system of equations will have
The segments in each figure are tangent to the circle at the points shown.
Find each length.
9514 1404 393
Answer:
RS = RT = 2
Step-by-step explanation:
The two tangents from a point are the same length.
RS = RT
y = y^2/2
y^2/2 -y = 0
y(y/2 -1) = 0 . . . . factor out y
Values of y that make these factors zero are ...
y = 0 . . . . . . . . true if points R, S, T are coincident on the circle
y/2 -1 = 0 ⇒ y = 2
Then the segment lengths are ...
RS = RT = 2
which of the following represents a function of protein within a organism ?
A.storing genetic information
B.storing energy
C.generating heat
D.fighting infection
Answer:
A
Step-by-step explanation: ITS RIGHTTTTTTTTTTTTTTTTT
if one burger cost $60 what will 15 burgers cost
Answer:
60 • 15 = $900
Step-by-step explanation:
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PLease HELLLPPPPP I NEED HELP
Answer: I don’t know...... sorry
Step-by-step explanation:
The LSA of square based pyramid with equal edges is 144 square root 3. Find the area of base ?
a2=LSA/3–√=144
a a a a a a a a a a a a a
Point VV is located at (-5,3)(−5,3) on the coordinate plane. Point VV is reflected over the yy-axis to create point V'V ′ . Point V'V ′ is then reflected over the xx-axis to create point V''V ′′ . What ordered pair describes the location of V''?V ′′ ?
Given:
Point V is located at (-5,3) on the coordinate plane.
It is reflected over the y-axis to create point V'.
Point V' is then reflected over the x-axis to create point V''.
To find:
The location of point V''.
Solution:
We have,
Point V= (-5,3)
If point V reflected over the y-axis, then
[tex](x,y)\to (-x,y)[/tex]
[tex]V(-5,3)\to V'(5,3)[/tex]
If point V' reflected over the x-axis, then
[tex](x,y)\to (x,-y)[/tex]
[tex]V'(5,3)\to V''(5,-3)[/tex]
Therefore, the ordered pair (5,-3) describes the location of V''.
Answer:
5,3
Step-by-step explanation:
Point VV is located at (-4,6)(−4,6) on the coordinate plane. Point VV is reflected over the xx-axis to create point V'V
′
. What ordered pair describes the location of V'?V
′
?
Two supplementary angles that are 4x and 5x what is the value of x
Answer:
x = 20
Step-by-step explanation:
4x + 5x = 9x
9x = 180 (supplementary angles add up to 180 degrees)
Divide 180/9 = 20
Answer:
x = 20.
Step-by-step explanation:
Supplementary angles sum to 180, so:
4x + 5x = 180
9x = 180
x = 20.