A freight train travels 1445 miles in 25 hours. What is the train’s average rate of speed?
Answer:
the train's average rate of speed would be 57.8 mph
Step-by-step explanation:
Divide 1445 with 25 and then you get your answer
brainilest pls
anyway hope this helped have an awesome day bye byeee
A bucket of water of mass 15 kg is pulled at constant velocity up to a platform 40 meters above the ground. This takes 16 minutes, during which time 5 kg of water drips out at a steady rate through a hole in the bottom. Find the work needed to raise the bucket to the platform. (Use g=9.8m/s^2.)
Answer:
4900 J
Step-by-step explanation:
The average mass of water raised is ...
(15 kg +(15 -5) kg)/2 = 12.5 kg
The work done to raise it 40 m is ...
W = mgh = (12.5 kg)(9.8 m/s^2)(40 m) = 4900 J
what is 6 20/97 as a improper fraction?
Answer:
120/97
Step-by-step explanation:
When you're turning a mixed fraction into an improper fraction, you keep the denominator (bottem number) the same, but you times the numerator (top number) by the whole number (non-fraction number/left number)
6 * 20 = 120
Therefore it should be 120/97
This can not be simplified though (if I recall)
A freight train completes its journey of 150 miles 1 hour earlier if its original speed is increased by 5 miles/hour. What is the train’s original speed?
Answer:
155 m/h
Step-by-step explanation:
We just add 150 to 5 which equals 155 m/h
I HOPE THAT THIS IS CORRECT
Which numbers are factors of 12? Check all that apply
2
5
6
12
24
Answer:
2 6 12
Step-by-step explanation:
there are the only factor of 12 there
Use given triangle to fill in the blank.
Answer:
5 over 13
Step-by-step explanation:
adjacent over hypotenuse use trigo rules
(Toa Cah Soh)
Answer: 12/13
Step-by-step explanation:
3x-17=-41. answer for x pls
Answer: x = -8
Step-by-step explanation:
Move all terms that don't contain x to the right side and then solve
4. Lucy is k years old. She has a sister who is three years younger than she is and
another sister who is five years less than twice Lucy's age. Write an expression, in
simplified form, for the sum of the three girls' ages.
Answer:
4k - 8
Step-by-step explanation:
Lucy is k years old so we know k is an important part of this problem.
Sister 1 is 3 years younger, so she is k - 3 years old.
Sister 2 is 5 years less than twice Lucy's age therefore, she is 2k (twice Lucy's age) - 5 years old.
Now we have: k + (k - 3) + (2k - 5)
We can simplify like terms with the k's and get 4k. then we add (-3) and (-5) to get 4k - 8.
Hope this helps!
Find the linear equation from this table
Answer:
y=2x+5
Step-by-step explanation:
The slope-intercept form of a linear equation is:
y=mx+b
Where m is the slope and b is the y-intercept.
We can start by finding the slope...
[tex]Slope=\frac{y_2-y_1}{x_2-x_1}[/tex]
We can use any two x, y pairs to solve for the slope. In this case let's use (0,5) and (2,9)...
[tex]Slope=\frac{9-5}{2-0}=\frac{4}{2}=2[/tex]
The y-intercept is where the line intersects the y-axis. This means that the x value is 0. In the table we can see when the x value is 0, the y value is 5 meaning the y-intercept is 5...
y=2x+5
please help the answer is in the screenshot
Answer:
Their angles are equal and the sides are the same ratio
Step-by-step explanation:
Hope this helps (doesn't need much explanation)
Huilan is 5 years older than Thomas. The sum of their ages is 67. What is Thomas's age?
Answer:
31
Step-by-step explanation:
hope this helps
Can someone please explain this to me?
Answer:
62°
Step-by-step explanation:
Angle KPO = 90°. If you add angles KPN and NPO together, you will get 90°. Set up an equation and solve for x.
2x + x - 3 = 90
3x - 3 = 90
3x - 3 + 3 = 90 + 3
3x = 93
3x/3 = 93/3
x = 31
Now solve for the measure of KPN by substituting 31 for x.
KPN = 2x
KPN = 2(31)
KPN = 62°
Answer:
D 62
Step-by-step explanation:
Good luck
3. Which of the following has a value of 13? (5.02.2)
A. 5 + 4 x 3 - 1
B. (5 + 4) x 3 - 1
C. 5 + 4 (3 - 1)
D. (5 + 4) X (3 - 1)
i don't know the answer
Step-by-step explanation:
okay hold up a sec
marco bought a 64 ounce bag of popcorn. he ate 5% of the bag with his lunch. How much popcorn did he eat at lunch?
Answer:
3.2 ouncesStep-by-step explanation:
Divide 5 percent by One Hundred,
5/100 = 0.05
Multiply 0.05 by 64
0.05x64= 3.2
**ANSWER NEEDED QUICKLY** Here is a number pyramid puzzle.
Fill in each blank with a number so that every number
is the product of the two numbers directly below it.
Answer:
ready. took me 2 minutes
`15 is what percent of 40?
Answer:
37.5%
Step-by-step explanation:
let 15 is X % of 40,
now,
x% of 40 =15
or,X/100 ×40 =15
or,X=(15×100)/40
or,X=1500/40
orX=37.5%
Pedro bought 8 tickets to a basketball game. He paid a total of $224. Enter an equation, using x as your variable, to determine whether each ticket cost $28 or $21. Then enter the cost of the ticket.
The equation is __=__
The cost of each ticket was $__
x=224/8
x=25+3=28
So: 28
What is the constant of proportionality in this proportional relationship? PLS I WILL MAKE U BRAINLELIST
Answer:
The constant of proportionality is [tex]k=\frac{7}{9}[/tex]
Step-by-step explanation:
Recall that the equation for direct variation is [tex]y=kx[/tex] where [tex]y[/tex] varies directly with [tex]x[/tex] and [tex]k[/tex] is the constant of proportionality.
Here, [tex]k=\frac{7}{9}[/tex] since [tex]2(\frac{7}{9})=\frac{14}{9}=1\frac{5}{9}[/tex], [tex]3(\frac{7}{9})=\frac{21}{9}=2\frac{3}{9}[/tex], and so on.
jim deposited $4000 into an account with 5.9% interest, compounded quarterly. assuming that no withdrawals are made, how much will he have in the account after 7 years?
The area of a rectangle is calculated using the equation Area = length x width
What is the area of rectangle ABCD?
A. 6 Square Units
B. 441 Square Units
C. 21 Square Units
D. 49 Square Units
Need answers for 3 and 4 please.
Answer:
Note: Any number or variable(unknown) raised to the index or power zero (0)* is equal to one (1)*.
3. Solution
Given: x = 2 and y = 5
-4x^-2 + 3y^0
by substituting the values of x and y,
> -4(2)^-2 + 3(5)^0
> -4/(2)^2 + 3(5)^0
> -4/4 + 3(1)*
> -1 + 3 = 2
4. Solution
Given: x = 2 and y = 5
2x^0y^-2
by substituting the values of x and y
> 2(2)^0(5)^-2
>2(2)^0×1/(5)^2
>2(1)×1/25
>2×1/25
>2/25
10 points!
An artist has been hired to paint a mural of a sailboat on the side of a building. The original sailboat is 32 feet in length and has a mast height of 40 feet. The
artist will create the mural using a scale factor of 4:3 to relate the original dimensions to mural dimensions.
How tall will the mast of the sailboat be in the mural?
_____ ft?
Answer:
30 feet
Step-by-step explanation:
A ratio of 4:3 means that if one part can be represented by x, the original height is equal to 4 * x and the mural height is equal to 3 * x. This is because the ratio of original : mural is 4 : 3, so if one part = x, we have 4 * x : 3 * x. Therefore,
original mast height = 40 feet
4 * x = original mast height = 40 feet
divide both sides by 4 to get x
x = 10 feet
3 * x = mural mast height = 3 * 10 feet = 30 feet
Which of the following statements are true about the function y = 3x?
i. The function is a direct variation.
ii. The function goes through the origin.
iii. The constant of variation is
1/3
iv. y is 6, when x is 2.
The following statement are true about the given function
Statements i,ii, and iv
Given Data
We have the following function to analyse
y = 3x
The following statement are true/false about the given function
The function is a direct variation: this is true because an increase in the x value will increase the y valueThe function goes through the origin: for x = 0, y = 0The constant of variation is 1/3: this statement is false, the constant of the variation is 3y is 6, when x is 2: this statement is true, when we plug x = 3, the corresponding value for y is 6Learn more about variation here:
https://brainly.com/question/6499629
Answer:
I,II, and IV
Step-by-step explanation:
Simplify 5^2 • 5^4
O A. 5^8
O B. 5^6
O C. 5•8
O D. 5^2
Answer:
Option B
Step-by-step explanation:
Given the following question:
[tex]5^2\times5^4[/tex]
In order to find the answer, we simply apply the exponent rule and add the exponents.
[tex]5^2\times5^4[/tex]
[tex]2+4=6[/tex]
[tex]=5^6[/tex]
The answer is option B or "5^6."
Hope this helps.
Complete the following item. 5 < x <
16 8 11
HELP!! Please answer 9 and ten with solution needed!!
Answer:
m=7 z=-12
Step-by-step explanation:
expand brackets:
8m+24=5m+45
Change sides:
8m-5m=45-24
3m=21
m=7
z-6 = 3
2z 4
Coss multiply:
4z-24=6z
4z-6z=24
-2z=24
Divide both sides by -2:
z=-12
Which describes the intersection of plane A and line m?
line k
line n
point X
point W
HELP I DON'T GET THIS PLEASE HELP!!!!!!!
Kamara has a square fence kennel area for her dogs in the backyard. The area of the kennel is 64 ft squared. What are the dimensions of the kennel? How many feet of fencing did she use? Explain.
Answer:
dimensions: 8 ft x 8 ft ║ 32 ft of fence she used.
Step-by-step explanation:
area of the kennel is 64 ft²as its a square, its formula for area: length²
using the formula:
length² = 64
length = √64
length = 8 ft
→ The dimensions of the kennel is 8 ft x 8 ft
Using the length, we can find; how many fencing she used:
formula used: 2 ( length + length )
using the formula:
2 ( 8 + 8 )
2 ( 16 )
32 ft
what are the names of these polygons
Answer:
1. This is a Quadrilateral.
(There're 4 sides)
2. This is a Pentagon.
(There're 5 sides)
The first polygon is a quadrilateral.
The second polygon is a pentagon.
Polygons:Polygons are flat or plane, two-dimensional closed shape with straight sides.
Polygons are classified base on the number of side they possess. For example polygon with 4 sides are called quadrilaterals, the ones with 8 sides are referred to as octagons.
Therefore, the polygons above have 4 sides and 5 sides respectively.
The polygon with 4 sides is know as a quadrilateral.
The polygon with 5 sides is known as a pentagon
learn more on polygons here: https://brainly.com/question/7921826