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2 years ago

Solve the inequality

Mathematics

1 answer:

Alex17521 [72]2 years ago

8 0

Isolate c by subtracting all sides by 4

Then divide all sides by -5

You should get

5 less than or equal to c less than or equal to 4

Hope this helped :)

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April has 5 milligrams of zinc and 0.25 milligrams of copper. How much more zinc does she have than copper?

netineya [11]

Answer:

the answer is 4.75

Step-by-step explanation:

5-0.25=4.75

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3 years ago

A 70 cm long stick is cut into two parts in such a way that the longer part is 20 cm longer than the shorter part. How long is e

Pachacha [2.7K]

Answer:

The longer part is 45 cm long and the shorter part is 25 cm long.

Step-by-step explanation:

Given:

A 70 cm long stick is cut into two parts in such a way that the longer part is 20 cm longer than the shorter part.

Now, to find the length of each part of the stick.

Let the shorter part be $x.$

So, the longer part is $x+20.$

Total length of the stick = 70 cm.

Now, to get the length of each part we solve an equation:

$(x)+(x+20)=70\\\\x+x+20=70\\\\2x+20=70\\\\Subtracting\ both\ sides\ by\ 20\ we\ get:\\\\2x=50\\\\Dividing\ both\ sides\ by\ 2\ we\ get:\\\\x=25.$

The length of the shorter part is 25 cm.

Now, substituting the value of $x$ :

$x+20\\\\=25+20\\\\=45\ cm.$

The length of longer part is 45 cm.

Therefore, the longer part is 45 cm long and the shorter part is 25 cm long.

6 0

3 years ago

Deborah needs to make 16 costumes for the school play. Each costume requires 2 and 1/4 yards of material. How many yards of mate

patriot [66]

35.5 wouldn’t be enough. She needs 2 1/4 of yards of material, first you would need to convert the fraction into a decimal and 1/4 is .25 which gives you 2.25 now you multiply 16 x 2.25 which gives you 36. That’s why 35.5 wouldn’t be enough.

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3 years ago

Sin(-x)=-sinx for all values x

Allushta [10]

Answer:

True

Step-by-step explanation:

This is just a general property to know, I don't want to prove it LOL

5 0

3 years ago

Read 2 more answers

Help fast pleaseeeee