Answers
Answer:
1.Train b travels 125 miles in four hours.
2. Train A's speed is 50 mph and train b's speed is 31.25 mph
srry about the last one but i don't know what the answer is since i don't know the choices for it
Related Questions
What is the rounded number when 4 872 is rounded to the nearest hundred?
Answers
(The answer is 4900, that’s what i got)
Choose the correct description of each system of equations.
3x + y = 3
x - 2y = 4
Answers
Since we have a unique value of x and y, it shows that the system of the equation is consistent and independent.
Given the system of equation expressed as:
3x + y = 3
x - 2y = 4
Solve simultaneosly;
3x + y = 3 ............. 1 * 1
x - 2y = 4 ...............2 * 3
_________________________
3x + y = 3
3x - 6y = 12
Subtract
y-(6y) = 3 - 12
7y = -9
y = -9/7
Substitute y = -9/7 into the equation to get x
x - 2y = 4
x - 2(-9/7) = 4
x + 18/7 = 4
x = 4 - 18/7
x = 3/7
Since we have a unique value of x and y, it shows that the system of the equation is consistent and independent.
Learn more here: https://brainly.com/question/20052273
URGENT -
In a class of students, the following data table summarizes the gender of the students and whether they have an A in the class. What is the probability that a student chosen randomly from the class has an A?
Female Male
Has an A 2 5
Does not have an A 3 9
Answers
Answer:
The chances are 36.8% that a random student has an A
Step-by-step explanation:
There are 19 total students and 7 of them have an A. Divide 7 by 19 and convert the decimal value into a percentage.
The zeros of a quadratic function are located at x=−8 and x=4.
which expression represents a function
a- (x−8)(x−4)
b- (x−8)(x+4)
c- (x+8)(x+4)
d- (x+8)(x−4)
Answers
Answer:
d- (x+8)(x−4)
Step-by-step explanation:
Hi there!
Factored form of a quadratic equation: [tex]y=(x-r)(x-s)[/tex] where r and s are the zeros of the quadratic
We're given that the zeros are -8 and 4. Plug these into the factored form equation:
[tex]y=(x-(-8))(x-4)\\y=(x+8)(x-4)[/tex]
I hope this helps!
no links please Angle A measures 50 degrees. If angle A is rotated 45 degrees, what is the measure of angle A'?
Answers
Answer:
95? Sorry if I'm wrong.... :)
Step-by-step explanation:
5 - (x - 2)^2 for x = -1
Answers
Step-by-step explanation:
the answer is 8
5-(-1-2)
5-(-3)
5+3
=8
A car covers the distance between two cities in 6 hours. A van covers the same distance in 5.5 hours by travelling 4 km/h faster than the car. What is the distance between the two cities? Find the speed of the car and the van.
Answers
Step-by-step explanation:
[tex]\large\underline{\sf{Solution-}}[/tex]
Given that,
A car covers the distance between two cities in 6 hours.
A van covers the same distance in 5.5 hours.
The speed of the van is 4 km per hour faster than the speed of car.
Let assume that
Speed of the car be x km per hour
So,
Speed of van is x + 4 km per hour.
Let further assume that
Distance between two cities be y km.
We know, Distance covered = Speed × Time.
➢ Now, Distance (y) covered by car at the speed of x km per hour in 6 hours is
[tex]\rm :\longmapsto\:\boxed{\tt{ y = 6x}} - - - - (1)[/tex]
➢ Also, Distance (y) covered by van at the speed of x + 4 km per hour in 5.5 hours is
[tex]\rm :\longmapsto\:\boxed{\tt{ y = 5.5(x + 4)}} - - - - (2)[/tex]
So, from equation (1) and (2), we have
[tex]\rm :\longmapsto\:6x = 5.5(x + 4)[/tex]
[tex]\rm :\longmapsto\:6x = 5.5x + 22[/tex]
[tex]\rm :\longmapsto\:6x - 5.5x = 22[/tex]
[tex]\rm :\longmapsto\:0.5x = 22[/tex]
[tex]\rm :\longmapsto\:\dfrac{5}{10} \times x = 22[/tex]
[tex]\rm :\longmapsto\:\dfrac{1}{2} \times x = 22[/tex]
[tex]\bf\implies \:x = 44[/tex]
On substituting the value of x, in equation (1), we have
[tex]\rm :\longmapsto\:y = 6 \times 44[/tex]
[tex]\bf\implies \:y = 264[/tex]
So,
[tex]\begin{gathered}\begin{gathered}\bf\: \rm :\longmapsto\:\begin{cases} &\sf{Distance \: between \: cities = 264 \: km} \\ \\ &\sf{Speed \: of \: car \: = \: 44 \: km \: per \: hour}\\ \\ &\sf{Speed \: of \: van \: = \: 48 \: km \: per \: hour} \end{cases}\end{gathered}\end{gathered}[/tex]
Whats the common difference between 34,31,28,25
Answers
34-31 is 3, 31-28 is 3, 28-25 is 3. so it keeps going down by 3
What is 1/10=4/5y ?????
Answers
Answer:
y = 1/8
Step-by-step explanation:
Divide both sides by 4/5, 1/10 divided by 4/5; 4/5y divided by 4/5. In 4/5y divided by 4/5, the two 4/5s cancels out, leaving y alone. 1/10 divided by 4/5 equals to 1/8. Now you have, 1/8 = y, which is the same thing as y = 1/8. Therefore, the value of y is 1/8.
Answer: 1/8
Step-by-step explanation:
4/5y=1/10
*multiply both sides by 5, and you'll get
4y=1/2
*divide both sides by 4
y=1/8
Actividades de Desarrollo Actividad 1. En el siguiente ejercicio identificarás los elementos de los términos algebraicos (signo, coeficiente, literal y exponente) en los espacios correspondientes. Considera que, si no existe un signo explícitamente, lo deberás indicar como positivo (+), de igual forma, de no ser visible un exponente, su valor será de uno. a) -21x3w? Signo: - Coeficiente: 21 Literales: X, W Exponentes: 3.7 b)-755 Signo: Coeficiente: Literales: Exponentes: Literales: c) 8a2b5 Coeficiente: Exponentes: Signo: Literales: Exponentes: Coeficiente: Signo: Literales: Exponentes: Coeficiente:_ Signo: Literales: Exponentes: Coeficiente: Signo: d) m11 e) xyws ni ayb e) xyws e) xyws Literales: Exponentes: Coeficiente: Signo: Signo: Exponentes: Literales: 28 Coeficiente: ACADEMIA NACIONAL DE MATEMATICAS DGETI
Answers
Una expresión algebraica consta de una variable, coeficiente, exponente y signos.
Una variable es cualquier término desconocido y representado por el alfabeto inglés, como a, b, c, etc.
Un coeficiente es un número que se multiplica por la variable, como 2, 17, 39, etc.
Un exponente da la potencia del término que indica cuántas veces se repite.
a) -21x³w⁷
Firmar: -
Coeficiente: 21
Literales: X, W
Exponentes: 3.7
b) -755
Signo: negativo -
Coeficiente: 755
Literales: nulo
Exponentes: 1
c) 8a²b⁵
Signo: Positivo +
Coeficiente: 8
Literales: a, b
Exponentes: 2,5
d) m11
Signo: Positivo +
Coeficiente: 11
Literales: m
Exponentes: 1
e) xyws
Signo: positivo
Coeficiente: 1
Literales: x, y, w, s
English
An algebraic expression consists of a variable , co efficient, exponent and signs.
A variable is any term that is unknown and represented by the English alphabet such as a, b,c and so on.
A co efficient is a number that is multiplied by the variable such as 2, 17 ,39 etc.
An exponent gives the power of the term indicating how many times it is repeated.
a) -21x³w⁷
Sign: -
Coefficient: 21
Literals: X, W
Exponents: 3.7
b) -755
Sign: negative -
Coefficient: 755
Literals: nil
Exponents: 1
c) 8a²b⁵
Sign: Positive +
Coefficient: 8
Literals: a,b
Exponents: 2,5
: d) m11
Sign: Positive+
Coefficient: 11
Literals: m
Exponents: 1
e) xyws
Sign: Positive
Coefficient: 1
Literals: x,y,w,s
https://brainly.com/question/19864285
https://brainly.com/question/24615967
Perform the indicated operations. Reduce your answer to it's lowest term.
Answers
Step-by-step explanation:
15 1/2+ 3/4=16 1/4
to add fractions what you want to do is this:
so you want them as the same denominator, a way to do this is multiply one denominator with another (ex, 2 in 1/2. you want to multiply 4 with 2 which equals 8 and 2 with 3. this together equals 6/8. do the same thing with 1/2. 1×4=4 2×4=8. 4/8)
so, whats 4/8 and 6/8? just adding it like usual, it'll be 10/8, or 1 2/8.
15+1 2/8=16 2/8
16 2/8 simplified (just divide by 2 until you make it to where you cant anymore)
16 1/4
do the same with the other adding ones.
23 1/6+8 3/4=23 11/12
15 2/5+ 2 2/6= 17 11/15
now, do the same way as showed before but except subtract.
9/10 - 3/5 = 15/50
7 3/4 - 5 5/8 = 1/8
20 5/8= 1/8
What is the value of x in the equation below?
1.5 times open paren x plus 4 close paren minus 3 equals 4.5 times open paren x minus 2 close paren
Group of answer choices
x equals 3
x equals 4
x equals 9
x equals 5
Answers
I just did it
w + 2x + 1 = x – 2w +26
Answers
please mark has brainiest if helped!
Each year a certain amount of money is deposited in an account which pays an annual interest rate of so that at the end of each year the balance in the account is multiplied by a growth factor of x = 1 + r. $300 is deposited at the start of the first year, an additional $500 is deposited at the start of the next year, and $400 at the start of the following year.
A) Write an expression for the value of the account at the end of three years in terms of the growth factor .
B) What is the amount (to the nearest cent) in the account at the end of three years if the interest rate is 2%?
Answers
Answer: 5%
Step-by-step explanation:
What is 2 1/2 divided by 2 2/3
Answers
Answer:
15/16
Decimal form 0.9375
Step-by-step explanation:
The perimeter of a triangle is 17x−5 units. One side is 3x+5 units and another is 8x−3 units. How many units long is the third side?
Answers
9514 1404 393
Answer:
6x -7 units
Step-by-step explanation:
Let c represent the length of the third side. The perimeter is the sum of the three side lengths.
P = a + b + c
(17x -5) = (3x +5) +(8x -3) +c
17x -5 = 11x +2 + c . . . . . . . . . . . . collect terms
6x -7 = c . . . . . . . . . . . . . . subtract 11x+2
The third side is 6x -7 units.
what's the distance between each pair of points R(0,5), S(12,3)
Answers
Answer:
square root of 369
Step-by-step explanation:
What's the gradient of the blue line?
Answers
Use a factor tree to find the GCF of 32 and 80.
Answers
Answer:
GCF of 32 and 80 is 16
Step-by-step explanation:
factors of 32 = 1, 2, 4, 8, 16, 32
factors of 80 = 1, 2, 4, 5, 8, 10, 16, 20, 40, 80
hello,i need help with this question:
The sum of the measures of angle M and angle R is 180⁰.
• The measure of angle M is (5x+10)⁰.
• The measure of angle R is 55⁰.
What is the value of x?
☺
Answers
Answer:
x = 23
Step-by-step explanation:
If the sum of angles is equal to 180 then we can write and equation to find the value of x
5x + 10 + 55 = 180 add like terms
5x + 65 = 180 subtract 65 from both sides
5x = 115 divide both sides by 5
x = 23
10-ounce package of cashews costs $8.11, and a 16-ounce package of cashews costs $12.
a. What is the cost per ounce for the 10-ounce package of cashews?
b. What is the cost per ounce for the 16-ounce package of cashews?
c. Which package is the better buy?
Answers
Answer:
A. 81 cents per ounce
B. 75 cents per ounce
C. The 16 ounce package would be a better buy.
Step-by-step explanation:
A. 8.11/10 = 0.811
B. 12/16 = 0.75
C. Each ounce is cheaper in the 16 ounce package.
In the auditorium there are 13 red chairs and 37 blue chairs. What is the ratio of the number
of blue chairs to the number of red chairs?
Answers
A company spent 20% of its annual budget developing a new machine. What fraction of the company’s budget was spent developing the new machine?
A. 1/20
B. 5/15
C. 1/5
D. 3/19
Answers
Answer:
c
Step-by-step explanation:
20/100 can be simplified to 2/10, which can be simplified further to 1/5
Find all real square roots of - 144
Answers
Answer:
The square roots of 144 are 12 and -12 which are rational numbers.
Step-by-step explanation:
answerrrrrrrrrrrrrrrr plzzzzzzzzz
Answers
Answer:
x=7
Step-by-step explanation:
7+8 = 15
15+75 = 90
ABC is a 90º angle since AB is parallel to BC
Please help I have 20 minutes to turn this in
Answers
Answer:(-6,30)
Step-by-step explanation:
x=-6
y=30
Answer: (-6,30)
Step-by-step explanation:
-5x=-x+24
+x=+x
-4x=24
÷-4=÷-4
X=-6
Y=-5x
Y=-5(-6)
Y=30
(-6,30)
Can someone help me do this
Answers
Answer:
5x +2 = 87
So X = 17
3y = 42
So Y = 14
answer to get free poin
Answers
Answer:
You dont even have a question
Step-by-step explanation:
HELPPPPPP PLEASEEEEEE FASTTTT
Answers
180-100=80
The missing angle is 80°.
Which of the following statements are not true?
Answers
Answer:
1.false. 2.true 3.false 4.true