Form 8B were investigating how a metal bar expands while being heated. The bar

was originally 30 cm in length and it expanded to 31.75 cm.

Calculate the percentage increase in length. Give your answer correct to 1 decimal

place.

Answers

Answer 1

Answer:

5.8%

Step-by-step explanation:

to work out percentage increase:

(new value - original value) ÷ original value and times it all by 100

((31.75-30) ÷ 30) × 100

=5.8% (1dp)


Related Questions

Which ordered pairs are solutions to the inequality 2y-x≤-6 ?
a. (0,-3) b. (5,10) c. (2, -2) d. (-5, 2)

Answers

Answer:

C

Step-by-step explanation:

i need help on this asap

Answers

Answer:

c

Step-by-step explanation:

A line includes the points (3, 7) and (14, 18). What is its equation in slope-intercept form?

Answers

Answer:

y=x+4

Step-by-step explanation:

1/2 of a bowl of cereal is divided equally between 4 bowls. how much cereal is in each bowl

Answers

Answer:

1/16 of the cereal is in each bowl

Step-by-step explanation:

Answer:

1/8  

Step-by-step explanation:

1/2 / 4

= 1/2 * 1/4

= 1/8.

I'm having trouble solving this:
Corry collects cube containers. She fills them with water and pours them into a rectangular prism. She was playing with them and discovered something interesting. She had three cube containers. One cube was 1 inch by 1 inch by 1 inch. A second cube was 2 inches by 2 inches by 2 inches and a third cube was 3 inches by 3inches by 3 inches.
She filled all three with water. Then Corry poured all three cubes into a rectangular prism filling it exactly! The rectangular prism has a square base with a side length (1+2+3 = 6) inches and the height is 1 inch.
Corry wonders whether she has found a pattern. Investigate using more cube containers to fill square base prisms with heights of 1 in. Describe any conjectures you discover.

Answers

Corry's conjecture is right, and the volume follows a pattern

The volume of a cube of side length l is:

[tex]V = l^3[/tex]

For the first cube of length 1 in, the volume is:

[tex]V = 1^3[/tex]

[tex]V = 1[/tex]

For the second cube of length 2 in, the volume is:

[tex]V = 2^3[/tex]

[tex]V = 8[/tex]

For the third cube of length 1 in, the volume is:

[tex]V = 3^3[/tex]

[tex]V = 27[/tex]

So, the total volume is:

[tex]Total =1 + 8 + 27[/tex]

[tex]Total =36[/tex]

The volume of a rectangular prism of base lengths 6 in and height 1 in is:

[tex]Volume = 6^2 \times 1[/tex]

[tex]Volume = 36[/tex]

Assume, he adds a cube of side length 4 in, the volume is:

[tex]V = 4^3[/tex]

[tex]V = 64[/tex]

The total volume would be:

[tex]V =36 + 64[/tex]

[tex]V =100[/tex]

The base length of the rectangular prism would be:

[tex]Length =1+2+3+4[/tex]

[tex]Length =10[/tex]

The volume of the rectangular prism would be:

[tex]Volume = 10^2 \times 1[/tex]

[tex]Volume = 100[/tex]

So, the pattern is:

Cubes                Volumes

1, 2, 3                    36

1, 2, 3,4                  100

Corry's conjecture is right, and the volume follows a pattern

Read more about conjectures at:

https://brainly.com/question/4125198

what 2+2 x10+2X2+10=

Answers

Answer:

36

Step-by-step explanation:

Use PEMDAS:

2*10 is 20

2*2 is 4

So the equation is now

2+20+4+10=

Now add:

36

Thus the solution is 36

Hope this helps!

The answer to your question is 36

inverse of
f(x)=6x+5

Answers

Attached image is the answer

PLS I RLLY NEED HELP


Water flows out of a tank at the rate of 400 ml per minute. How long
will it take for 7.2 liters of water to flow out of the tank?

Answers

Answer:

18 minutes

Step-by-step explanation:

7.2 litres is 7200ml

each minute 400ml leaves the tank

so the question being asked is how many 400's are there in 7200...

7200 divided by 400 is 18.

Help please help please

Answers

Answer:

just use algebraic expression

Help please just this 1-5 please answer correctly​ but real people only answer correctly​ I'll do anything​

Answers

Answer: Check the answers below

Step-by-step explanation:

Remember: slope is rise/run

1) 3/15 = 0.2 ft

2) 4/3

3) 2

4) 6/8

5) 2/9

Question 7 of 15 Which is an equation of the line through (0,0) and (5,-2)? O A. y = 3 B. y = ja c. y = - 30 D. y=- Y​

Answers

Answer:

b po sana po maka tulong

Step-by-step explanation:

pa brainliest po

Is experimental and practical is same ,if no so tell difference ?​

Answers

Step-by-step explanation:

math question ? really ?

while it is true, as the other answer indicated, that experimental and practical are not the same, but the meaning of the words is different to what the other answer suggested.

please read the question again.

this is about "experimental" vs. "practical".

so, we are only dealing with adjectives (describing associated nouns).

something is "experimental", if it already exists, but it is not clear yet, if it will fulfill its intended purpose. only time and experience in using and applying that thing will tell us.

example : experimental drugs.

something is "practical" on the other hand, if we are not wondering about the effects of the existing thing but its usability. it is "practical", if this thing or method or operation guideline or ... is not too complicated to do, and any potentially necessary resources are relatively easily available and obtainable.

8:07, 8:58, ?, 10:43, 11:37
61
9:51
9:50
9:53
9:49

Answers

Answer:

  9:50

Step-by-step explanation:

It appears the sequence has 0:51 as the first difference, and those differences increase by 0:01 in each interval. That means ? must be chosen so that ...

  ? - 8:58 = 0:52   ⇒   ? = 8:58 +0:52 = 9:50

  10:43 -? = 0:53   ⇒   ? = 10:43 -0:53 = 9:50

The missing time is 9:50.

Question 7
1 pts
Select all sets of points that have a slope m = 2.
(4, 2) and (2,-2)
O (2, -3) and (1,5)
(15, 12) and (5, -8)
(6,5) and (-1,-9)
(2, -3) and (-3,-2)

Answers

Answer:

(4,2) and (2,-2)

Step-by-step explanation:

using m=y2-y1/x2-x1

m= -2-2/2-4=-4/-2

therefore,

m=2

given the function f(x)=3x-5, for which value in the domain does f(x)=-38?

Answers

[tex]f(x) = -38\\\\\implies 3x -5 = -38\\\\\implies 3x = -38 +5 \\\\\implies 3x = -33\\\\\implies x = -\dfrac{33}{3}\\\\\implies x = -11[/tex]

the distance between the points (-4, -3) and (-8, 6) to the nearest whole number.

Answers

Answer:

X1=-4,Y1=-3,X2=-8,Y2=6

=(X2-X1)^2+(Y2-Y1)^2

=(-8-(-4))^2+(6-(-3))^2

=(-4)^2+(9)^2

=(16+81)

=97units

how do i write 125 as a repeated multiplication of 5s

Answers

Step-by-step explanation:

Multiply 5 by itself until you get 125.

how many number of solutions does 3(x+1)+x+2=2(2x+1)+3 have pls help me out

Answers

Answer:

All real numbers (infinite solutions)

Step-by-step explanation:

To find the number of solutions, first, distribute and combine the like terms of the equation.

3(x+1)+x+2=2(2x+1)+3

3x+3+x+2=4x+2+3

4x+5=4x+5

Since both sides of the equation are equal, the number of solutions are infinite.

Which of the following points would be on the graph of
the equation y=-40 + 6?
-4, -10)
(-4, 22)
(1, -10)
(1, - 2)
О
-
о

Answers

Step-by-step explanation:

To find points on the line y = mx + b, choose x and solve the equation for y, or. choose y and solve for x.

10. Sarah wants to buy shirts for her school's
graduation party. A company will make the
shirts for $10.50 each plus a $50 setup
charge. If Sarah has $1000, which inequality
could she use to find the maximum number
of x shirts she can buy?

Answers

Answer:

1000 ≥ 10.50x + 50

Step-by-step explanation:

≥ is a greater than or equal to sign. We want to know how many she could possibly buy.

.this is all the question ​

Answers

Answer:

Answer: 2

Step-by-step explanation:

What is the slope of the line that passes through the points (-10,1 ) and (0,5 )?

Answers

Answer:

4/10 or 0.4

Step-by-step explanation:

I just need 20 charecters

Answer:

slope = 0.4

Step-by-step explanation:

HOPE THIS HELPS :)

is y=2/3x+2 proportional

Answers

yes, it is proportional <3



1. A hot air balloon 4s anchored to the ground by a 152-foot long
rope. The balloon hovers 132 feet above the ground. Which
statement is true?
(a) The angle the rope makes with the ground is about 30"
(B) The angle the rope makes with the ground is about 67
(C) The horizontal distance between the anchor and balloon is about 201 feet.
(D) The horizontal distance between the anchor and the balloon is about 75
foot,
19

Answers

This is just a simple example of Pythagoras’ theorem

A simple diagram is all you need!!

Pls help with question 3 and below

Answers

Step-by-step explanation:

now find the area of triangle and add with the area of square and subtract with the area of circle

hope it will help you

PLEASE HELP SOMEONE. ILL GIVE BRAINIEST.
Caitlyn and Daniela are going out for pizza to their local gourmet pizza shop. They order a pizza with a total of 5 toppings. The restaurant charges 8 dollars for a pizza, plus $1 per basic topping and $2 per premium topping. The girls spend a total of $15 on their pizza. Let x = the number of basic toppings and y = the number of premium toppings. What equation accurately represent this situation? Like as a systems of equations where the two points intersect. The point where they intersect will be the answer.

Answers

25

8×1=8

8 +2=10

10+15=25

The answer is the 1st image, and the explanation is the 2nd image.

The answer in text if seeing the image is not possible; x + y = 5 and x + 2y + 8 = 15

On a coordinate plane, 2 lines are parallel to each other.This system of equations has .

PLS HELP

Answers

Answer:

No solutions

Step-by-step explanation:

The lines never meet, there for have no intersection point leading to no solution for the system of equations.

Hope that helps

If 4/3 liters of water are enough to water 2/5 of the plants in the house, how som:
much water is necessary to water all the plants in the house? *

Answers

Answer:Group of answer choices 2/5 x ? = 4/3 ? X 2/5 = 4/3 4/3 x ? = 2/5 ? ÷ 5/2 = 3/4 4/3 ÷ 2/3 = ?

Step-by-step explanation:If 4/3 liters of water is enough to water 2/5 of the plants in the house, how much water is necessary to water all the plants in the house? Select all of the multiplication and division equations that represent this situation.

Answer:

3 1/3 liters of water

Step-by-step explanation:

4/3 is to 2/5

What 1 is to x

(4/3) / (2/5) = 10/3 = 3 1/3

A rectangular garden has dimensions of 19 feet by 16 feet. A gravel path of equal width is to be built around the garden. How wide can the path be if there is enough gravel for 246 square feet?
OA 5ft
OB. 3 ft
OC. 41
OD. 5.5 ft

Answers

Answer:

A rectangular garden has dimensions of 19 feet by 16 feet. A gravel path of equal width is to be built around the garden. How wide can the path be if there is enough gravel for 246 square feet?

OA 5ft

OB. 3 ft

OC. 41

OD. 5.5 ft

56 is what percent of 80

Answers

Answer:

70%

Step-by-step explanation:

Therefore, we can conclude that the required percentage is 70% that is 70% of 80 is 56.

Hopes This Helps :)

Other Questions
if a line has slope -2/3 and passes through point (-3,7) what is the y intercept Please share one idea for actions or policies that you think would begin to address an issue of racial or social injustice Pls help me guys .................. what are places that are high risk for contamination? Hello can some one please help me What are the steps for making an argument? Having children in your care with TBI can be a challenge (traumatic brain injury why is that I need these answers in 5 MINUTES PLZ HELP if 2/7 of an amountb is Rs 5600 .find the total amunt If she acquires suitable qualifications, it will ..her chances of getting a job. * Is a senior editor at a news company credible, and if so what makes them credible? Please help this is due on Monday! Will give brainliest!!!! How much Lilac would earn if she deposited 25,000.00 on the bank with 3% interest per year after 5 years? paki answer po T-T how did the unification of italy affect their economy can someone revise this paragraph' '' In minutes that matter and food that fuels the protagonists are both helpers that made a difference in the world with their thinking skills.The groups also took their activity time to help people with heating homes and donating phones.The difference between the 2 hero groups is one group worked to heat up homes with leftover oil. The other group also worked very hard to donate over 180 million minutes to soldiers! ''then write another one on how your revision improved you last paragraph (25 points and brainliest to best answer) What is a good age for retirement? Why? Which of the following are the two principal end products of photosynthesis? (4 points)a) Glycogen and starchb) Glycogen and cellulosec) Starch and glycerold) Starch and glucosePlease help me with the answer, tysm! How can a company economically benefit by Producing green products The product of three less than a number and eight is nine I need help on question 5 - 6 - 7 - 8 - 9 - 10 - 11 - 12 please