can anyone pls tell me when do we cross multiply and when do we multiply 10 * 75 im really confused
Answers
You don't multiply liters of gasoline by distance.
They are directly proportional - the more gasoline you have the longer is the dictance you can go.
So it's cross multiply.
Another examlpe:
you are paid by hour for your work. The more hours you have worked, the more you are paid:
hours payment
2 h $36
5 h x
[tex]x=\dfrac{5\cdot36}2=90[/tex]
You would multiply 10•70 if they were inversely poportional values
For example:
1. speed and time of ride by given distance {the greater the speed the less time you need for a ride}
speed time
10 m/s 75 s
8 m/s x
[tex]x=\dfrac{10\cdot75}{8}=93.75\,s[/tex]
2. price and kolos of apples - the higher the pice the less of kilos you can buy by given cash
price kilos of apples
$2 8
$4 x
[tex]x=\dfrac{2\cdot8}{4}=4\,kg[/tex]
Related Questions
please answer question with explanation
Answers
Answer:
Domain: [tex]\{x|x\in\mathbb{R}\}[/tex]
Range: [tex]\{y|y\in\mathbb{R},y\leq -2\}[/tex]
Step-by-step explanation:
The domain is the span of x-values the graph covers.
The range is the span of y-values the graph covers.
The given graph is a quadratic. We can see that the x-values will extend infinitely in both directions.
Thus, the domain is all real numbers.
In set notation, this is:
[tex]\{x|x\in\mathbb{R}\}[/tex]
From the graph, we can see that the maximum value is y=-2. The graph won't ever go above this.
So, the range is all real numbers less than or equal to -2.
In interval notation, this is:
[tex]\{y|y\in\mathbb{R},y\leq -2\}[/tex]
And we are done :)
5x^2y/15xy simplified?
Answers
Answer: x/3
Step-by-step explanation:
5x²y/15xy
=x²y/3xy ⇔ divide 5 on both sides
=x²/3x ⇔ eliminate y
=x/3 ⇔ divide x on both sides
Hope this helps!! :)
Please let me know if you have any question
There are 4 chocolate chip cookies and 12 oatmeal cookies in a jar. If you reach in and randomly choose 2 cookies without replacing the first, what is the probability that both will be chocolate chip? 6
Answers
Answer:
A
Step-by-step explanation:
So there are 4 chocolate chips and 12 oatmeal. In total, there are 16 cookies.
The probability of selecting a chocolate chip when you reach in for the first time will be 4/16 or 1/4.
The second time, you reach in, however, there would be one less chocolate chip cookie because you would've pulled one out previously. Thus, the probability is now 3/15 or 1/5.
So, the probability of pulling a chocolate chip cookie consecutively is:
[tex]\frac{1}{4}\cdot\frac{1}{5}=\frac{1}{20}[/tex]
Our answer is A :)
please help (20 points + brainlest)
Answers
Answer:
PT = 24
Step-by-step explanation:
PT = TQ
3x + 6 = 5x - 6
12 = 2x
x = 6
PT = 3(6) + 6
PT = 18 + 6
PT = 24
Answer:
24
Step-by-step explanation:
From the pic,PT=TQ
therefore,
3x+6=5x-6
5x-3x=6+6
2x=12
therefore, x=12/2
=6
therefore, PT=3×6+6
=24
48=56+8b solve for b
Answers
Answer:
b= -1
Step-by-step explanation:
48 =. 56 +8b
-56 -56
---------------------------------
-8 = 8b
Divide 8 on both sides
-1=b
• Answer:
b = - 1
• Step-by-step explanation:
48 = 56 + 8b
48 - 56 = 8b
8b = - 8
b = - 8 ÷ 8
b = - 1
Which of the statements about the following quadratic equation is true?
6x² – 8 = 4x2 + 7×
Answers
Answer:
Its a quadratic eqn with complex roots
Answer:
The answer is A on edunuity.
Step-by-step explanation:
Evaluate: -12x3 please help me with this
Answers
Answer:
-36
Step-by-step explanation:
12 * 3 = 36
When you multiply by a negative number, the number becomes a negative therefore, -12*3 = -36
Answer:
-36
Step-by-step explanation:
When multiplying a negative and a positive the answer is always going to be negative. So 12x3=36 and the 12 is negative and the 3 is positive, so the answer is -36.
please help
use the numbers 5 and 3 to provide an example of the Commutative Property of Addition.
Answers
Answer:
COMMUTATIVE PROPERTY
a+b=b+a
so with given numbers
5+3=3+5 is the answer.
Step-by-step explanation:
hope it will help :)
Here we can take 5 as a and 3 as b
Therefore, 5+3=3+5=8
Hope it helps
The irrigation system for a farm sprays water in circular patterns. Each sprinkler is connected to a pipe in the center of a circle and rotates around that pipe. The largest sprinkler sprays water 20 feet. What is the circumference of the circle irrigated by this sprinkler?
Answers
Answer:
40 π ft or 125.6ft
Step-by-step explanation:
If the sprinkler can spray water 20 ft, that means the radius is 20 ft and to get the circumference we do 2 r π
or 2r*3.14
The answer is either 40 π ft
or 125.6ft
θ
=
40
∘
=
40
π
180
rad.
It waters a circular sector of area
A
=
2060
f
t
2
.
If the length of the sprinkler be
L
ft. It will be radius of the circular sector watered.
Hence
1
2
×
θ
in radian
×
L
2
=
A
⇒
L
=
√
2
A
θ
=
√
2
⋅
2060
⋅
180
40
π
≈
76.8
ft
PLEASE HELP ME ON THIS IT IS URGENT IT IS GEOMETRY ILL MARK U THE BRAINLIEST DONT WASTE ANSWERS
Answers
It’s a reflection of the two angels
If the lines A and B are parallel then find the value of x
Answers
Answer:
The answer is 113 as we find angle qps and then x by alternate angle property.
(17 points and brainliest!) If the point (x, y) is in Quadrant IV, which of the following must be true? A. x > 0 and y 0 C. x > 0 and y > 0 D. x < 0 and y < 0
Answers
Answer:
x>0 and y<0
Step-by-step explanation:
Quadrant IV is the bottom right corner.
X would have to be positive and Y would have to be negative.
Quadrants are simply the axes of a 2D coordinate that divides a plane into four segments.
The true statement is that: (a) x > 0 and y < 0
First, we analyze each quadrant
Quadrant 1
x and y are greater than 0Quadrant 2
x is less than 0y is greater than 0Quadrant 3
x and y are less than 0Quadrant 4
x is greater than 0y is less than 0By comparing the above to the list of given options,
The true statement about quadrant IV is (a) x > 0 and y < 0
See attachment for illustration of quadrants
Read more about quadrants at:
https://brainly.com/question/14450464
A students pays of 18 an hour is 4 more than twice the amount of the student earns per hour at an internship enter an solve an equation to find the hourly pay of the intership
Answers
Answer:
the hourly pay fro the internship is $7/hr
Step-by-step explanation:
The statement can be written mathematically as below
[tex]18 = 4 + 2x[/tex]
the hourly rate of the internship is [tex]x[/tex]
solving the equation, we have
[tex]18 = 4 + 2x[/tex]
subtract 4 from both sides of the equation
[tex]18 - 4 = 4 +2x -4[/tex]
[tex]14 = 2x[/tex]
[tex]x = 14/2[/tex]
[tex]x = 7[/tex]
the hourly pay fro the internship is $7/hr
Answer: $7
Step-by-step explanation:
According to the question , we have
$18=4+2 (amount of the student earns per hour at an internship)
Let x be the amount of the student earns per hour at an internship, then the equations will be
18 = 4+2x
Subtract 4 from both sides , we get
14 = 2x
Divide both sides by 2, we get
7 = x
Hence, the hourly pay of the intership was $7 .
Pls check if these are correct. 1) If the following statement true or false? Explain your reasoning. All integers are rational numbers. (1 pt.) - The statement is false because 0 is an integer but cannot be written as the ratio of two integers - The statement is true because all numbers are rational numbers ✅ The statement is true because any integer x can be written in the for x/1, which is the ratio of two integers - The statement is false because 1/2 is a rational number but not an integer 2) Which of the following must describe an irrational number?(1 point) ✅ A number with a non repeating and non terminating decimal expansion - A number with a non terminating decimal expansion - A number with a non repeating decimal expansion - A number with a repeating or terminating decimal expansion 3)Which axiom is used to prove that the product of two rational numbers is rational?(1 point) - Natural numbers are closed under multiplication - Whole numbers are closed under division ✅ Integers are closed under multiplication - Integers are closed under division 4) Without calculating, how do you know the product 2/21 x 3/31 is rational? (1 point) - The product of any two positive numbers is rational. - When multiplying fractions, the product of two fractions is rational so long as both fractions are less than 1. ✅ Rational numbers are closed under multiplication, meaning that the product of rational numbers is rational. - When multiplying fractions. the product of two fractions is rational so long as both fractions are fully reduced 5) What rational number, when multiplied by an irrational number, has a product that is a rational number? (1 point) ✅ 1/2 - 1/10 - 0 - 1 Thx if you help
Answers
Answer: please find the answer in the explanation
Step-by-step explanation:
1.) All integers are rational numbers.
The statement is false because 1/2 is a rational number but not an integer
2.) Which of the following must describe an irrational number?
- A number with a repeating or terminating decimal expansion.
3.) Which axiom is used to prove that the product of two rational numbers is rational?
Integers are closed under division
4.) Without calculating, how do you know the product 2/21 x 3/31 is rational?
When multiplying fractions, the product of two fractions is rational so long as both fractions are less than 1.
5.) What rational number, when multiplied by an irrational number, has a product that is a rational number? 1/10
Answer:
fraction
Step-by-step explanation:
correct on edge
NEED HELP ASAP
given m||n find the value of x
Answers
Answer:
x=15
Step-by-step explanation:
These are alternate exterior angles and alternate exterior angles are equal when the lines are parallel
6x+8 = 7x-7
Subtract 6x from each side
6x+8-6x = 7x-7-6x
8 = x-7
Add 7 to each side
8+7 =x
15=x
[tex]\huge\underline{\underline{\mathfrak{\red{A}\green{n}\pink{s}\orange{w}\blue{e}{r}}}}[/tex]
[tex]\boxed{x \:= \:15}[/tex]
Turn 14/6 into a mixed number
Answers
[tex]2 \frac{2}{6} [/tex]is the mixed fraction of [tex] \frac{14}{6} [/tex]
Answer:
2 1/3
Step-by-step explanation:
You first have the fraction 14/6.
To convert it into a mixed number you have to divide 14 by 6.
14 divided by 6 is approximately 2.333333, continued.
2.3333 in fraction form is 2 2/6
But you have to simplify it making the fraction 2 1/3
What is the slope? Look at the chart listed ✨
Answers
Answer:
m = -8/3
Step-by-step explanation:
Slope Formula: [tex]m=\frac{y_2-y_1}{x_2-x_1}[/tex]
Step 1: Find 2 coordinates
(-70, 70)
(-10, -90)
Step 2: Find slope m
m = (-90 - 70)/(-10 + 70)
m = -160/60
m = -8/3
PLEASE HELP What is the slope of the line y=−4y
Answers
Answer:
The slope is 0
Step-by-step explanation:
Explain the difference between f(2) and f(x) = 2. Use a verbal explanation and create examples to make it very clear. Please help me out
Answers
Let x be a variable, and f(x) a function of that variable.
f(2) is a number ; it's the value of the function f(x) when x = 2, assuming that value exists.
f(x) = 2 is a statement ; it says there is some value of x for which the function returns a value of 2. Because it's a statement, it can be true or false.
Here's an example:
Define f(x) = sin(x). Then f(2) = sin(2) ≈ 0.909297.
If x is a real number, then the statement sin(x) = 2 is false, because -1 ≤ sin(x) ≤ 1 for all real x.
If we replace 2 with 1, on the other hand, we get
f(1) = sin(1) ≈ 0.84147
and
sin(x) = 1 ==> x = π/2 + 2nπ
where n is any integer. (So we're talking about numbers like π/2, -3π/2, 5π/2, -7π/2, and so on.) We're saying here that any real number x of the above form satisfies the equation and makes the statement true.
Which mathematician wrote "The Elements"?
Answers
Answer:
Euclid wrote "The Elements''
Step-by-step explanation:
Answer:
Euclid
Step-by-step explanation:
"The Elements" is a mathematical treatise consisting of 13 books attributed to the ancient Greek mathematician Euclid in Alexandria, Ptolemaic Egypt c. 300 BC.
let's f (x)= 3x - 7 find F (a + 2)
Answers
Answer:
3a-1
Step-by-step explanation:
Substitute
3(a+2)-7
Distribute
3a+6-7
Simplify
3a-1
Answer:
Hope it can help you and please mark me as a brainlist...
please help me find the x
Answers
Answer:
x=2
bd/ba=be/bc
6/6+4=x+1/x+1+x
6/10=x+1/2x+1
12x+6=10x+10
12X-10X=10-6
2X=4
X=4÷2=2
Answer:
x = 2
Step-by-step explanation:
Basic proportionality theorem,
[tex]\frac{AB}{BD}=\frac{CB}{BE}\\[/tex]
AB = AD + DB = 4+6 = 10
CB = CE + EB = x + x +1 = 2x +1
[tex]\frac{10}{6}=\frac{2x+1}{x+1}[/tex]
Cross multiply
10*(x+1) = 6*(2x+ 1)
10*x + 10*x = 6*2x + 6*1
10x + 10 = 12x + 6
Subtract 10x from both sides
10x + 10 - 10x = 12x + 6 - 10x
10 = 2x + 6
Subtract 6 form both sides
10 - 6 = 2x + 6 - 6
4 = 2x
Divide both sides by 2
4/2 = 2x/2
2 = x
x = 2
El operador de un elevador registro el numero de pisos que este subio y bajo en varias ocaciones para llegar a la planta baja hasta el piso 9 si en total se hicieron 5 movimientos 2 de bajada y 3 de subida que operacion podria indicar la cantidad de pisos que el elevador subio bajo en cada movimiento
Answers
Answer:
Supongo que en realidad dice
"... Para llegar de la planta baja hasta el piso 9..."
Ok, el elevador comienza en el piso 0, y llega hasta el piso 9 después de 5 movimientos.
De estos 5 movimientos, 3 suben (los podemos definir como positivos)
y 2 bajan (los escribimos como negativos).
Entonces, comienzo en 0.
0 + A + B + C - D - E = 9.
ahí dice que:
"desde el piso 0, tengo 3 subidas y dos bajadas de tal forma que el resultado final es el piso 9"
Una expresión algebraica matemática consta de variables y constantes junto con operaciones algebraicas. Al resolver problemas de palabras algebraicas, es necesario que los problemas se traduzcan con precisión en ecuaciones y se resuelvan correctamente.
Dado que:
Un operador quiere llegar al noveno piso superior desde la planta bajaEl número total de sus movimientos = 5 movimientosNúmero de movimientos hacia arriba = 3Número de movimientos hacia abajo = 2Para configurar una operación que indique el número de pisos que recorrió el ascensor con cada movimiento;
Vamos a considerar
el número de movimientos hacia arriba (es decir, elevado) será = (a)el número de movimientos hacia abajo (es decir, hacia abajo) para ser = (b)∴
Número de movimientos hacia arriba = 3 × a = 3aNúmero de movimientos hacia abajo = 2 × b = 2bAsí, la puesta a punto de la operación que indica el número de pisos que recorrió el ascensor con cada movimiento se puede deducir de la diferencia entre el movimiento de subida y bajada será igual a 9.
Por lo tanto, podemos concluir que la configuración de la operación es:
3a - 2b = 9
Obtenga más información sobre las expresiones algebraicas aquí:
https://brainly.com/question/11227332?referrer=searchResults
The local business will donate $5.00 for every 10 tickets sold. Let x represent tickets sold, and y represent dollars donated. Student A claims that the equation is y = 2x. Student B claims that the equation is y = 1/2x. Explain who is correct.
Answers
Answer:
The point that represents what the local business will donate is (10, 5). After testing the point in both equations, you can see that student B wrote the correct equation; 5 = 1/2(10).
Step-by-step explanation:
Answer:
The point that represents what the local business will donate is (10, 5). After testing the point in both equations, you can see that student B wrote the correct equation; 5 = 1/2(10)
Step-by-step explanation:
got correct on edge 2022
A monomial
B binomial
C trinomial
D quadrinminal
Answers
Frank works in the supply room of a law firm. At the beginning of the month, he had 27 boxes of pens with 13 pens in each box. At the end of the month, there were 61 pens left. How many pens did he give out over the month?
Answers
Answer:
290
Step-by-step explanation:
first you multiply 27 times 13 and get 351.you then subtract 351 from 61 and get 290.
Answer:
290
Step-by-step explanation:
27x13 = 351
351-61= 290
write the quadratic equation in standard form x squared + 3x = 8
Answers
Answer:
[tex]x^{2}[/tex] + 3x - 8 = 0
Step-by-step explanation:
ax² + bx + c = 0 (standard form)
Answer:
x² + 3x = 8
Step-by-step explanation:
use the associative and communicative properties to make this calculation easier. justify the steps.
6. (17×50)
Answers
Answer:
Step-by-step explanation:
6*(17*50) = 6 * (50 * 17) {Commutative property}
= (6 * 50) * 17 {Associative property}
= 300 * 17
= 5100
What is the DOMAIN of the following relation? {(-5,4), (-4,2), (0,2), (1,3), (2,4)}
Answers
Answer:
{-5, -4, 0, 1, 2}
Step-by-step explanation:
The domain is the inputs or the x values
{-5, -4, 0, 1, 2}
Answer:
See below.
Step-by-step explanation:
The domain of a relation is all of the x-coordinates.
So we have the relation:
{(-5,4), (-4,2), (0,2), (1,3), (2,4)}
This means that the domain will be the following values:
{(-5,4), (-4,2), (0,2), (1,3), (2,4)}
So, our domain is:
[tex]\{-5, -4, 0, 1, 2\}[/tex]
Note that the domain is in ascending order.
Amal can run 1\8 mile in 1 1\2
if Amal can maintain that pace, how long will it take him to run 1 mile
Answers
Explanation: 1/8 mile times 8 is equal to 1 mile. We must do 1 1/2 times 8 to get our answer. 1 1/2 is equal to 3/2. 2/2(1) plus
Answer:36 minutes.
Step-by-step explanation:
Multiply 12 by 3. I have this for homework right now and this is what i got and it was correct. I hope this helped!