Which type of change or reaction always results in a new substance?


chemical change


all answers are wrong


phase change


physical change

Answers

Answer 1

Answer:

Chemical Change-


Related Questions

What is the slope of the line?
y У
2
-2
1
1
1
2
1

Answers

The slope of this line is 2

T-shirts cost $12 each and masks cost $8 each. If a is the number of t-shirts bought and b is the number of masks bought, then the cost for 'a' shirts and 'b' masks is 12a +86.​

Answers

Answer:

ूेऐेुेुलौयकौइकौलएेःरःरइौईौकौथटइिौइिौइोौकइेईौकेञौञे

What is the value of expression below if u=-5 and y=40

Answers

Answer:

what expression

Step-by-step explanation:

HELP!! WHAT IS THE SURFACE AREA OF THIS?

Answers

Answer:

94 when you add up all of the sides.

Step-by-step explanation:

Answer:

Step-by-step explanation:

There are 4 rectangles and 2 triangles on the surface of this solid.

Area = 2 * 5*5 + 5*6 + 2 * 1/2 * 6*4

= 50 + 30 + 24= 104 yd^2.

Question in photo! (Please help with other questions!)

Answers

Answer:

c) [tex]a_{n}[/tex] = 3.5n + 7.5

Step-by-step explanation: =>

Given :-

a = 11

d = 3.5

To Find :

[tex]a_{n}[/tex]

Solving :-

= a + (n - 1)d

= 11 + 3.5n - 3.5

= 3.5n + 7.5

Solution :-

c) [tex]a_{n}[/tex] = 3.5n + 7.5

i need the answer to this asap

Answers

Answer:

John's ball hit the court first

Step-by-step explanation:

to solve for who hit the court first we have to look for when x was 0

John's ball hit the court in 1 second

now to look for the other guy we substitute 0 to the equation

0 = (-16t - 2) (t - 2)

we cannot substitute 0 to t because its looking for when it hit the court. x is 0 because it hits the ground

soo i guess we distribute ?

or actually we equate both to 0 i think

-16t - 2 = 0   t - 2 = 0

-16t =  2.      t = 2

t = 2/-16

t = 1/-8   t = 2

theres two answers but 1/-8 is wrong because theres no such thing as the ball going underground (LOL) so his ball hit the court two seconds later

John's ball hit the court first i think

im not sure how to do the rest, but i do know how to do the first. Sorry but hope this helps you a little!

The point (150, 3) means 3 bags contain 150 pounds of dog food.
True or false

Answers

True because 3 bags and 150 pounds is of food are like ratios

Answer:

True! 3 bags contain 150 pounds of dog food.

Step-by-step explanation:

GEOMETRY
Which of the following statements is NOT a property of parallelograms?
All 4 angles are congruent.
Opposite angles are congruent.
Opposite sides are congruent
Parallelograms have 4 straight sides.

Answers

Step-by-step explanation:

Parallelogram is a quadrilateral s.t. opposite sides are parallel.

1. 4 angles DON'T necessarily have to be congruent

2. True

3. Opp. sides DON'T necessarily have to be congruent

4. True

SO first and third statements are NOT property of parallelogram

What is x + y? please answer asap

Answers

Answer:

Step-by-step explanation:An x-y axis, also known as a cartesian coordinate system or a coordinate plane, is a two-dimensional plane of points defined uniquely by a pair of coordinates.

Hope this helped!!!!

PLEASE HELP!!!
The black graph is the graph of
y = f(x).
Choose the equation for the red graph.


Answers

Answer:

D. Y/2 = f(x)

Step-by-step explanation:

A car travels 180 miles in 4 hours. Calculate the average speed of the car in mph.

Answers

Answer:

45 mph

Step-by-step explanation:

180 / 4= 45

The sphere has a radius of 12 inches. Find the volume.

Answers

Answer:

7238.23

Step-by-step explanation:

Which relationship is a function?

Answers

Answer:

An input cannot have 2 outputs.

Answer is top left and bottom right.

Step-by-step explanation:

top left and bottom right!!

hope it helps.

-5x + 18 = 3x - 38
show steps please need this asap

Answers

Answer:

x = 7.

Step-by-step explanation:

-5x + 18 = 3x - 38

18 + 38 = 3x + 5x

56 = 8x

x = 7.

what is 10^4 divided by 10^19 =?

Answers

Answer:

1e-16

Step-by-step explanation:

(10^4)/(10^19) =

(10*10*10*10)/(10^19)=

(1,000)/(10^19) =

1,000/(10*10*10*10*10*10*10*10*10*10*10*10*10*10*10*10*10*10*10)=

1,000/(10,000,000,000,000,000,000) =

1,000/10,000,000,000,000,000,000 =

1e-16

\lim_{n \to \infty} a_n \int\limits^a_b {x} \, dx \left \{ {{y=2} \atop {x=2}} \right. \leq \\ x^{2} \sqrt{x} \lim_{n \to \infty} a_n \left[\begin{array}{ccc}1&2&3\\4&5&6\\7&8&9\end{array}\right] \sqrt[n]{x} \neq \lim_{n \to \infty} a_n




if you can solve this ill make you brainliest

Answers

[tex]\lim_{n \to \infty} a_n \int\limits^a_b {x} \, dx \left \{ {{y=2} \atop {x=2}} \right. \leq \\ x^{2} \sqrt{x} \lim_{n \to \infty} a_n \left[\begin{array}{ccc}1&2&3\\4&5&6\\7&8&9\end{array}\right] \sqrt[n]{x} \neq \lim_{n \to \infty} a_n[/tex]

Tough you can't solve it!?

For each of the bookcases a woodworker is building, she
charges $65 for materials. She also charges $35 for each
hour she works to build the bookcases. How much does
the woodworker charge for working 100 hours to build 18
bookcases?
A$4,735
B$3,565
C$3,583
D $4,670

Answers

35x100 hours = $3500+$65= $3565 for 100 hours of work and materials.

answer is b

my sister just had this question

The first to answer gets brainlest

Answers

The correct answer is A.

Hope that helps you!!

1/3(2x-57)+1/3(6-x)=-4

Solve for x

Answers

answer:

x=39

I hope this helps:)

Simplify the expression.Explain each step.(0+a)+8

Answers

Answer:

a + 8

Step-by-step explanation:

add 0 and a

a = 1

That's it! i hope you have a great day

There are 3,542 books of the same thickness
and weight in a room. The room has 321 shelves.
If the books are split evenly among the shelves,
how many books will be on each shelf, and how
many will be left over?

Answers

Answer:

there will be 11 books on each shelf and 11 left over.

Step-by-step explanation:

3542/321

which is:

11 and 11/321

What is the length of a rounded to the nearest tenth

Answers

a= 8.79385241
b= 6.52703644
c= 10

is pip a horizontal symmetry

Answers

No it is not is the correct answer

A bacteriologist estimates that there are 5.2×10^4 bacteria growing in each of 20 petri dishes. About how many bacteria in total are growing in the petri dishes? Express your answer in scientific notation

Answers

Answer:

1X10^6

or

1.04x10^6

Step-by-step explanation:

You start by multiplying 5.2x10^4 by 20 because there are 20 petri dishes with this amount growing, and you get 1,040,000. Now we need to convert it to scientific notation. We know that 1,000,000 is 10^6, so we would move the decimal to the left 6 places and get 1.04x10^6. This is in scientific notation, but we need to keep in mind significant figures (sig figs), so your final answer would be 1x10^6, if that is not what your instructor is looking for, try 1.04x10^6.

write the following expression in exponential form 4.5 x 4.5 x 4.5 x 4.5 x 4.5 x 4.5 x 4.5
PLS HELPPPPPPP

Answers

Answer:

4.5^7

Step-by-step explanation:

if investment double every 7 years and you start with 600$ investment how much money would you have after 21 years

Answers

Answer:

$29,400

Step-by-step explanation:

21 years divided by 7 years = 3, which means we can separate this into 3 categories

$600 for 7 years is 4200

$1200 for 7 years is 8400

$2400 for 7 years is 16800

add the answers together

4200 + 8400 + 16800 = 29400

PLEASE HELP FAST!!
Gilbert earns $7.50 per hour washing cars.

Graph the relationship between the number of hours Gilbert works and the total amount of money he earns.

Answers

I CANT HELP :(

Step-by-step explanation:

:(

The coordinates would be (1. 7.5) (2, 15) (3, 22.5) (4, 30) (5, 37.5) (6, 45) and so on.

Molly bought 4.25 pounds of fish for $10.20. What is her unit rate (cost per pound)?

Answers

Answer:

$2.40 per pound

Step-by-step explanation:

Take the cost and divide by the pounds

$10.20/ 4.25 pounds

$2.40 per pound

Answer: The answer is 2.4

To find out the cost per pound, you just have to divide. For example, in this problem, you would divide 10.20 by 4.25 to see how much money it is for one pound of fish


please help me please

Answers

Answer:

x = - 5

Step-by-step explanation:

Remember that f(x) is the same value as y. So if f(x) = 1 then y = 1

There is only 1 point that has a y value of 1 and it is on the far left. The value you want is - 5

The answer is x = - 5 when f(x) = 1

What the answer to PTR?

Answers

Answer:

∠ PTR = 140°

Step-by-step explanation:

∠ PTQ and ∠ RTS are vertical and congruent, thus

2x + 16 = x + 28 ( subtract x from both sides )

x + 16 = 28 ( subtract 16 from both sides

x = 12

Thus ∠PTQ = x + 28 = 12 + 28 = 40°

∠ PTQ and ∠ PTR are adjacent and supplementary, thus

∠ PTR = 180° - 40° = 140°

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