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4 years ago

Which of the following is an example of a chemical change?

Mathematics

2 answers:

SCORPION-xisa [38]4 years ago

7 0

The answer is B.

To find the answer you can immediately cross out A and C. You're left with a mixture of ingredients that turn into a cake or choclate melting. Chocolate melting is a physical change so by using the process of elimination you can conclude that B is the correct answer.

Mariulka [41]4 years ago

4 0

Answer:

The correct answer is option B.

Step-by-step explanation:

We call chemical change to the process where two or more substances are transformed into other substances.

During this change, the substances will have a modification in the structure of their molecules and their bonds.

In the case of the example we can see how different substances (flour, sugar, eggs and butter) will change the shape of their structure to form another substance: the cake. This cake will receive the name of <em>product</em>.

Given this information, we can say that the correct answer is option B.

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Find the smallest zero for the function h(x)=4x^2-8x-60

cupoosta [38]

Your answer would be 3=x or 5=x
Hope this helps!
Have a nice day!

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4 years ago

Find the area in hectares of a rectangular farmland 1km by 1/2km

cluponka [151]

Answer:

<h3>Solution: Length of the rectangular farmland =1km</h3><h3> :Breadth of the rectangular farmland =1/2km</h3>

1km= 1000m, 1/2km =500m

Area=Length×Breadth

=1000x500m2=500000m2

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2 years ago

Read 2 more answers

A 2 - a - 20 help me out please

mash [69]

Hey there,

By using the $AC$ method . . .

$x^{2} +bx+c$

We do $(a^{2} -a-20)$ using the
$AC$ method, and from this, our
answer would give us . . .

$(a-5) \ (a+4)$

Hope this helps.
~Jurgen

4 0

4 years ago

Anyone know this I’m stuck

mestny [16]

I'm pretty sure it's..... B

3 0

3 years ago

Read 2 more answers

You are a receptionist for your company,You answered 54 calls between 8:00am and 11:30a.M.You had a 15 minute break this morning

likoan [24]

Answer:

3.6 minutes

Step-by-step explanation:

Average length of call = total time /total number of calls

between 8:00am and 11:30a.M is 3:30 mins

less break time = 3:30- 15 minutes = 3:15 minutes

It means i worked for 3: 15 minutes

For easy calculation, convert to minutes

1 hour = 60 minutes

(3 x 60) + 15 = 195 minutes

= 195/54 = 3.6 minutes

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3 years ago