3 years ago

WILL GIVE BRAINLY PLUS FIFTY POINTS!!! :D

Mathematics

2 answers:

VARVARA [1.3K]3 years ago

6 0

The first expression is correct

polet [3.4K]3 years ago

4 0

Answer:

18 - (-12)

Step-by-step explanation:

Take the final temperature and subtract the initial temperature to find the change in temperature

18 - -12

18 - (-12)

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Write the sentence as an inequality. 5 is no greater than 4 times a number minus 2.5.

garri49 [273]

Answer:

5 ≤ 4x - 2.5

Step-by-step explanation:

Inequalities

The expression "no greater than" can be better expressed as "less or equal than".

The expression 4 times a number, being x the unknown number can be written: 4x

Thus, the equivalent inequality of the sentence is:

5 ≤ 4x - 2.5

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3 years ago

When jack went to the movie he paid $8 for his popcorn and $4 for each additional order of popcorn. if i represents the total co

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I = 8 + 4x

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Answer:

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Find two consecutive integers whose sum is eleven less than three times the smaller integer.

maw [93]

Answer:

12 and 13

Step-by-step explanation:

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3 years ago

Match each expression to its equivalent standard form.

Aleksandr [31]

Let's expand the products they are all in the form

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For the first one we have a=x and b=2i:

$(x+2i)(x-2i)=x^2-(2i)^2=x^2+4$

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For the third one we have a=x+1 and b=i:

$(x+1+i)(x+1-i)=(x+1)^2-i^2=x^2+2x+1+1=x^2+2x+2$

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4 years ago