Answer:
25km/hr (take the word train as bus )
Step-by-step explanation:
Answer
Let x km/hr be the constant speed of the train,
Then Time taken to cover 300km=
x
300
hrs
Time taken to cover 300km when the speed is increased by 5km/hr=
x+5
300
hours
It is given that the time to cover 300km is reduced by 2 hours
∴
x
300
−
x+5
300
=2
⇒
x(x+5)
300(x+5)−300x
=2⇒2x
2
+10x=1500
⇒x
2
+5x−750=0⇒x
2
+30x−25x−750=0
⇒(x+30)(x−25)=0⇒x=25orx=−30
But x cannot be negative. Therefore x=25
Hence, the original speed of the train is 25km/hr
Express 2x2 – 3x – 5 as the product of two binomial factors.
Answer:
(2x-5) (x+1)Step-by-step explanation:
Express 2x2 – 3x – 5 as the product of two binomial factors.
factorize the given expression
2x^2 – 3x – 5
2x^2 – 5x+2x – 5
x(2x-5)+ 1 (2x-5)
(2x-5) (x+1)
Hence the expression as the product of two binomial is (2x-5) (x+1)
Could someone confirm if I was correct?
compare to the correct answer on the picture. If not helped you can use a graph calculator and it should let you know wether or not you’re correct
Kate and Rachel went out to lunch. Their bill came to $34.50 before the 6% sales tax. How much was their total bill with the tax?
Answer:
36.57.........................
Nita earns $20 per week walking her neighbor's dog. She also makes $2 per rose that she sells from her rose garden. Nita wants her weekly income to be at least $50. Create an inequality that correctly represents Nita's situation by dragging and dropping the three values into the appropriate spaces provided. x is the number of roses that Nita needs to sell.
Answer:
20+2>50
Step-by-step explanation:
Answer:
15 roses
Step-by-step explanation:
20+2x≥50
-20 -20
2x≥30
2x/2≥30/2
x≥15
Please answer These. must have them quick! **60 POINTS**
Answer:
1: x = 47, y = 902: x = 92, y = 88, z = 923: 284: x = 90, y = 855: 133Explanation:
[1] - Ay = 90 (90 degree angle)
90 - 43 = 47, so x = 47
[2] - Cx = 92 because 180 - 88 = 92
x = 92 and y = 88 because 92 + 88 = 180
[3] - Cx = 28 because 90 - 62 = 28
[4] - Dx = 90 because 180 - 90 = 90
y = 85 because 42 + 53 = 95, 180 - 95 = 85
[5] - Ax = 133 because 180 - 47 = 133
- PNW
James sat an English quiz. He scored 7 out of 8 what percentage did he get right?
Answer:
James scored 87.5% in the test.
Step-by-step explanation:
7 x 100 : 8 = 87.5%
If I add 3 to the left side of the equation, what do I have to do to the right side of the equation?
Question 3 options:
nothing
subtract 3
add 3
multiply by 3
Stacy spins the pointer 120 times and records it. The pointer lands 30 times on a section numbered 2, 19 times on 3, 25 times on 4, 29 times on 5, and 17 times on 6. A winning spin is a 2. FIND THE EXPERIMENTAL PROBABILITY OF LANDING ON 2
Answer:
1 / 4
Step-by-step explanation:
Number of trials = 120
Landing on 2 = 30
Landing on 3 = 19
Landing on 4 = 25
Landing on 5 = 29
Landing on 6 = 17
The experimental probability of landing in a two:
Experimental probability :
Number of times event occurs / Number of trials
Number of 2 landings = 30
Experimental probability of landing in a 2 ;
30 / 120 = 1/4
Solve for x.
78
5x-1
15x-3
Answer:
x=8
Step-by-step explanation:
Angle S and R are remote interior angles which means that they would add up to equal angle RQK.
78+5x-1=15x-3
Combine like terms
77+5x=15x-3
Add 3 on both sides
80+5x=15x
Subtract 5x on both sides
80=10x
Divide 10 on both sides
x=8
A bakery uses 300 pounds of flour to make 120 wedding cakes of the same size. At this rate how many pounds of flour are needed to make 1 wedding cake?Please answer the question
Answer:
2.5 pounds
Step-by-step explanation:
I got a 100 on this text
HELP WITH MATH WILL GIVE 10 POINTS, GOOD RATING, AND BRAINIEST
Answer:
ok.....mmmm............
Answer:
whats the ?
Step-by-step explanation:
Find value of X please
Answer:
x=7
Step-by-step explanation:
Step #1- Set the two lines equal to each other
10+12=x+15
Step #2- Solve for the line you have all values for
10+12=22
Step#3- Plug 22 back into the equation where the two lines are set equal to each other
22=x+15
Step #4- Solve for X algebraically
22=x+15
22-15=x
7=x
Mrs. Anderson's car can go 464 miles on 16 gallons of gasoline. How many miles
can the car travel on 22 gallons of gasoline?
Answer:
638 miles
Step-by-step explanation:
Key skills needed: Proportions, Unit Rates
1) The car can go 464 miles with 16 gallons of gasoline. We need to find how many miles each gallon gasoline results in.
To find the miles per gallon, we would do 464 miles/16 gallons --> 29 mpg
This means each gallon lets the car run 29 miles.
2) To find out how many miles 22 gallons is, we then do 29 x 22, which is 638 miles.
Therefore, your answer is 638.
Hope you understood and have a nice day!!
Justify whether the equation y=9x−4 defines a linear or nonlinear function.
32°
C
B
D
E
What is the measure of ZABD?
A 32°
B. 58°
O c. 64°
OD. 148°
O E. 180°
The measure of angle ZABD is 106°, the correct option is D.
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.
We are given that;
The line AE and CD
Now,
The angle sum property to find angle D:
Z + A + B + D = 360° Substitute the given values:
Z + 32 + 58 + D = 360 Simplify:
Z + D = 270 Subtract Z from both sides:
D = 270 - Z
Now, you need to find angle Z. To do that, you can use the fact that opposite angles in a quadrilateral are supplementary, meaning they add up to 180°2. So, angle Z and angle C are supplementary:
Z + C = 180°
You can use the fact that C is an exterior angle of triangle YZX and it is equal to the sum of the opposite interior angles3. Therefore, C = Y + X. Substitute this value:
Z + Y + X = 180°
You are given that Y = 10° and X = 6°. Substitute these values:
Z + 10 + 6 = 180 Simplify:
Z = 164
Now, you can use this value to find angle D:
D = 270 - Z Substitute Z = 164:
D = 270 - 164 Simplify:
D = 106
Therefore, by algebra the answer will be 106°.
More about the Algebra link is given below.
brainly.com/question/953809
#SPJ7
really need help i am failing these lessons
Mali ran 21 miles in 3 hours. How many miles could she run in 5.5 hours?
62.2 miles
30 miles
38.5 miles
40.5 miles
3.
Solve the word problem using unit rates.
Carl solves 12 multiplication problems for every 4 addition problems. If he solves 23 addition problems, how many multiplication problems does he solve?
69 multiplication problems
54 multiplication problems
92 multiplication problems
46 multiplication problems
4.
Find the fraction as percent.
15%
12%
17%
14%
5. \
Solve the proportions.
4.25
10
8
9
6.
Find the fraction as percent.
0.7%
70%
0.07%
7.0%
7.
Answer:
thats a long question ong
Step-by-step explanation:
Given f(x) = 2x + 2, solve for x when f(x) = -4
Anyone know the answer?
POINTS AND ILL GIVE MY NUMBER
I’ll give my number if u answer.
Based on her recipe, Elena knows that 5 servings of granola have 1,750 calories.
1. If she eats 2 servings of granola, how many calories does she eat?
2. If she wants to eat 175 calories of granola, how many servings should she eat?
3. Write an equation to represent the relationship between the number of calories and the number of servings of granola.
Answer:
1. 700 calories
2. Half a serving
3.x=serving
350x=calories
Good Luck!
EASY QUESTION!! is 12.0095 the same as 12.95?
Answer:
no
Step-by-step explanation:
not the same
Are -4 ( x - 6) and -4 • x - 4 • 6 equivalent
Answer:
[tex]no[/tex]
Step-by-step explanation:
Lets solve the first half.
[tex]-4 ( x - 6) = -4x + 24[/tex]
Second one:
[tex]-4 times x - 4 times 6 = -4x -24[/tex]
Now compare.....Not the same right??
So your answer is: [tex]no[/tex]
Hope this helps :)
What is the hardest part of solving a triangle with 2 sides given for you?
Answer:
As long as you understand the principles and rules of trig you can apply them to just about any problem. The hardest thing about word problems is understanding what they are asking.
Step-by-step explanation:
Write an
inequality to compare – 24 and -14.
Answer: The position of -24 is to the left of -14.
The position of -14 is to the right of -24.
Step-by-step explanation:
We can conclude that -18 < -2.
We can conclude that -14> -24.
acceleration of a runner who goes from 1.4 m/s to 2.2 m/s in 4 s
Answer:
acceleration is 0.2m/s²
Step-by-step explanation:
Vf=Vi+at
Lets susbtitute our known variables into the equation
2.2=1.4+a(4)
We get
a=0.2m/s²
anyone know this? just click on the photo
Answer:
6x - 4
Step-by-step explanation:
Is the set of ordered pairs presented in the arrow diagram a function?Explain.
Answer:
no
Step-by-step explanation:
a function cant have the same range
Answer:
Functions as Arrow Diagrams When the domain and codomain of a function are finite sets then one can represent the function by an arrow diagram. Remember that an arrow diagram represents a function if exactly one arrow must leave each element of the domain and point to one element in the codomain.
Step-by-step explanation:
7.
Which number shows seventy-three hundredths in
standard form?
a) 7,300
b) 7.3
C) 0.73
d) 0.073
The number that shows seventy-three hundredths in standard form will be 0.73.
Standard form simply refers to a number that can be written as a decimal number that's between 1.0 and 10.0 which is then multiplied by a power of 10.Therefore, the number that shows seventy-three hundredths in standard form will be: = 73/100 = 0.73In conclusion, the correct option is 0.73.
Read related link on:
https://brainly.com/question/20301788
X + 3 =8
X- 5 =7
Please someone help?
Step-by-step explanation:
x+3=8
8-5=3 so x=5
7+5=12 / 12-7=5
12-5=7
Answer:
the answer is (1) x = 5 (2) x = 12
Complete the factored form of the linear expression 21x + 14y = ( ) ( + )
Answer:
21x+14y
=7(3x+2y) taking common 7
6 of 12
A car travels a distance of 180 km in a time of 3 hours.
What is the car's average speed?
km/h
Answer:
60km/h
Step-by-step explanation:
180 ÷ 3 = 60
60km/h
Which angle corresponds to < 8?
Answer:
b
Step-by-step explanation: