The work done to stretch an elastic string by 40cm is 20 Joules
Hooke law states that the force (F) applied to a spring is directly proportional to the extension (e).
F ∝ e
F = ke
k is the constant
Given that a force of 10N produces an extension of 4cm, hence:
F = ke
10 = k(4)
k = 2.5 N/cm
For an extension of 40cm, the work done is:
Work done = (1/2)ke²
Work done = (1/2)(2.5 N/cm)(40 cm)² = 2000Ncm = 20 Nm
Work done = 20 Joules
The work done to stretch an elastic string by 40cm is 20 Joules
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PLEASE HELP I WILL GIVE BRAINLIEST!!
Ella completed the following work to test the equivalence of two expressions.
2 f + 2.6. 2 (0) + 2.6. 0 + 2.6. 2.6. 3 f + 2.6. 3 (0) + 2.6. 0 + 2.6. 2.6.
Which is true about the expressions?
The expressions are equivalent because Ella got different results when she substituted zero for f.
The expressions are equivalent because Ella got the same result when she substituted zero for f.
The expressions are not equivalent because Ella would get different results when substituting different numbers for f.
The expressions are not equivalent because Ella would get the same results when substituting different numbers for f.
Answer *The expressions are not equivalent because Ella would get different results when substituting different numbers for f.
（But I'm not sure.
Answer:
the answer is b
Step-by-step explanation:
bcz when she substituted 0 for f she got the same result on both the answers
it does matter what the constant of the first term is as long as the second term remains the same ( the first constant or number is being multiplied by 0 the result will always be 0)
Please solve this. I need help on it
Answer:
look at the photo............
9514 1404 393
Answer:
∠PTQ = 40°
∠PTR = 140°
Step-by-step explanation:
The two marked angles are "vertical" angles, so are congruent.
∠PTQ = ∠STR
(x +28)° = (2x +16)°
12 = x . . . . . . . . . . . . . . . divide by °, subtract x+16
Then the measure of angle PTQ is ...
∠PTQ = (x +28)° = (12 +28)° = 40°
That and angle PTR form a linear pair, so are supplementary.
∠PTR = 180° -∠PTQ = 180° -40° = 140°
The circles Diameter is 15 feet find the circumference of the circle. use 3.14
Answer:
The circumference of a circle with a diameter of 15 feet is 47.1 feet.
Step-by-step explanation:
To find circumference you multiply diameter by pi, or in this case 3.14.
15 × 3.14 = C
47.1 = C
The circumference of a circle with a diameter of 15 feet is 47.1 feet.
Can I get help with 1C please?
Answer:
14
Step-by-step explanation:
Michelle divided her birthday cake into sixteen pieces and gave one piece to each of her nine friends. Express the total number of pieces of cake she gave to her friends as a fraction.
Answer:
give me 1 min ill answer it
Step-by-step explanation:
if a system of equations have no solution, what does the graph look like?
36. The girls' gym teacher needs to purchase
15 softballs, 5 packages of tennis balls,
and 2 soccer balls. She plans to collect
$1 from each of her 15 students to help
pay for the balls. Write and evaluate an
expression to show how much more the
teacher will have to pay.
Help
Answer:Message me for full answer
Step-by-step explanation:
The population of Westport was 43,000 at the beginning of 1980 and has steadily decreased by 1% per
year since.
Find the population at the beginning of 1994. Round to the nearest person.
Answer:
37356
Step-by-step explanation:
Which statements are true about rational expression multiplication? Check all that apply.
The closure property states that the sum of two rational expressions is an irrational number.
Rational expressions are closed under multiplication.
The commutative property states that changing the order of two or more factors does not change the value of the product.
The associative property states that the way in which two or more factors are grouped in a product changes the value of the product.
The properties of rational expression multiplication are parallel to the properties of rational number multiplication.
9514 1404 393
Answer:
B, C, E
Step-by-step explanation:
(a) <does not refer to multiplication> FALSE
(b) Rational expressions are closed under multiplication.TRUE
(c) The commutative property states that changing the order of two or more factors does not change the value of the product. TRUE
(d) The associative property states that the way in which two or more factors are grouped in a product changes the value of the product. FALSE, the product will be unchanged.
(e) The properties of rational expression multiplication are parallel to the properties of rational number multiplication. TRUE
Answer:
The answer is B, C, E. aka, 2,3,5
Step-by-step explanation:
Here is proof! Hope you pass<33
4/8 x 4/5 = ? Help me please
hope it helps...................
[tex] \frac{4}{8} \times \frac{4}{5} [/tex]
Simplify:
[tex] \frac{4}{2} \times \frac{1}{5} [/tex]
[tex] \frac{4}{10} = \frac{2}{5} [/tex]
How do I write a percent as a fraction in simplest form? Please explain step by step to get marked
Step-by-step explanation:
Divide the percentage by 100. E.g 74%=64/100
Then simplify the newly made fraction,
Find the common factors,
E.g 64/100
Both can be divided by 2
32\50
Repeat simplifying step...
16\25
Till there are no more common factors
and that's the final answer...
Hope you understand, if not leave a comment and I'm ready to help, please mark BRAINLIEST.
I need an answer ASAP besties- I’m currently crying rn
Answer:
126/25 or 5.04
Step-by-step explanation:
Use the y- and x-intercepts to write the equation of the line. x- intercept (-6,0), y - intercept (0,-8)
Find the indicated values by using the graph.
1. h(2)=_____
2. h(4)=_____
3. h(1)=_____
4. h(5)=_____
5. h(____)=4
6. h(____)=1
7. What are the values for h(____)=2?
Answer:
1. 6
2. -1
3. 5
4. 2
5. -1
6. 5
7. 6
Help I have a C in math. I don't understand this Alegbra. If you get it right then I will give you Brainlist! (Ignore the black dots because I am not sure if they are right)
Answer:
YOUR RIGHT FOR BOTHH
Step-by-step explanation:
Answer:
Step-by-step explanation:
Solve the following proportion problem. Round to two decimals as need.
2.4/x = 5
Step-by-step explanation:
If you mean, 2.4 divided by x equals 5,
and we're to find x,
x=2.4÷5
x=0.48
Hope this helps, If so mark BRAINLIEST please
IS
ΔABC » ΔQRS
Find the missing side length, x.
Answer:
x = 10
Step-by-step explanation:
x/8 = 15/12
x/8= 5/4
x= (8 x 5)/4
x = 10
A vendor who sold bread at farmers' markets counted the number of leftover loaves at the
end of each day.
Day
Loaves of leftover bread
Leftover loaves
Tuesday
22
Wednesday 24
Thursday
20
Friday
22
Saturday
27
According to the table, what was the rate of change between Wednesday and Thursday?
Answer:
Step-by-step explanation:
4 loaves
Answer:
- 4
Step-by-step explanation:
Given:
Wednesday = day 3 = 24 loavesThursday = day 4 = 20 loavesRate of change:
Difference in the number of loaves / difference in the number of days(20 - 24)/(4 - 3) =- 4/1 = - 4
Simplify t^12/t^6
A. 2
B. 6
C. 6
D. 7-2
Answer:
t
12
/t
6
=t
12−6
=t
6
if this helps your welcome
Solve x2+12x=82 using completing the square. Answer the questions below.
Answer:
exact form : x = ± √ 118 − 6
Decimal form : x = 4.86278049 or − 16.86278049
Step-by-step explanation:
Use the formula ( b /2 ) ^2 in order to create a new term. Solve for x by using this term to complete the square.
= 7W + 5 + 6 is it a
Commutative property of addition, Commutative property of multiplication, Associative property of addition, Associative property of multiplication,
Distributive property.
Answer:
Associative property of addition
Step-by-step explanation:
A tent in the shape of a triangular prism is set up at a camping site. Use the measurements to calculate the volume of the tent. Report the answer using the correct number of significant figures. Remember, the volume formula for a triangular prism is given by V=Bh
Please helpp !! Will mark brainlest
A. 132cm2
B. 130cm2
C. 100cm2
D. 140cm2
Answer:
100 cm2
Step-by-step explanation:
The volume of the triangular prism will be 132 cubic centimeters. The correct option is A.
What is the volume of the prism?Volume is defined as the space occupied by any object in the three-Dimensions. All three parameters are required for the volume like length, width, and height of the cube or Cuboid. The volume of the rectangular prism is calculated by the product of the triangular base and the height of the prism.
Given that the dimensions of the base of the prism are height = 4cm and base = 6 cm and the length of the prism will be 11 cm.
The volume of the prism will be calculated as:-
V= ( 1/ 2 ) b x h x L
V = 0.5 x 4 x 6 x 11
V = 132 cubic centimeter
Therefore, the volume of the triangular prism will be 132 cubic centimeters. The correct option is A.
To know more about the volume of the prism follow
https://brainly.com/question/23963432
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HELP ME SOLVE THIS PLSS
no solution,
48x+43=47x+43
-43 -43
48x=47x
if x= 1
48 is not equal to 1
B
Answer:
B
Step-by-step explanation:
It's impossible to let these 2 equation have same answer!
What term describes the amount you must pay in order to be considered “up-to-date” with your credit card payments?
Interest
Minimum payment
Closing balance
Answer:
Minimum payment
Step-by-step explanation:
A minimum payment is the least amount that one must pay to be "up-to-date" with one's credit card payments.
In this exercise we have to use the knowledge of finance and identify in the given statement which term is used correctly:
Minimum payment
So the term used in this exercise corresponds to:
A minimum fee happen the minimal amount your credit card issuer will acknowledge toward your charge card balance each temporal length of event or entity's existence. You must pay not completely this amount for your fee to be deliberate "according to schedule," and to prevent late charge for service or privilege and other punishment.
See more about finance at brainly.com/question/10024737
Which ordered pair is a solution of the equation?
7x – 2y = -5
Answer:the answer should be (1,5)
Step-by-step explanation:
I’m don’t understand stand these that well, can someone please explain step by step to get marked.
Answer:
10
Step-by-step explanation:
press calculate
pls give brainliest
Answer: 10
Step-by-step explanation:
The sign √ means square root. Squaring is like multiplying a number by its own self again ( for example, x times x is equal to x squared). A square root is like dividing the square by its own self ( for example, √x^2 is equal to x ).
The square root of 100 is 10, since 10 squared is equal to 100.
it takes an engineer three hours to drive to his brother's house at an average speed of 50miles per hour. If he takes the same route home, but his average speed is 60 miles per hour, what is the time, in hours that it takes him to drive home?
Answer:
2.5 hours
Step-by-step explanation:
→ Write the formula
Speed = Distance ÷ Time
→ Find the distance for 3 hours at a speed of 50 mph
Distance = Speed × Time ∴ 3 × 150 = 150
→ Now work out the time
150 ÷ 60 = 2.5 hours
What would 4 divided 4/5 be and please explain step by step or show your work on a piece of paper to get marked =]
Answer:
5
Step-by-step explanation:
4/1 ÷ 4/5 = 4/1 x 5/4 = 20/4 = 5
HELPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP
Answer:
Step-by-step explanation:
The answer is B brace in this image it shows the words that it says plz trust me and tell me if this is wrong it should not be tho
spot the error and rewrite pllz I need now
Quotient ×Remainder+dividend=Divisor
Answer:
Divisor × Quotient + Remainder = Dividend
Step-by-step explanation:
Hope it is helpful.....
Answer:
Divisor×Quotient+Dividend=Remainder