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Stella [2.4K]
3 years ago
10

 please help me I’ll give you brainiest it’s for a test

Mathematics
1 answer:
damaskus [11]3 years ago
5 0

Answer:

x=5, y=7

Step-by-step explanation:

We have x=5 already given to us, so now plug it into x+y=12.

5+y=12, subtract 5 to the right. y=12-5, to get y=7

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Nitella [24]

(4^3)^5

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8 0
3 years ago
What is 3-4+11+21-3? Best explained answer gets Brainliest!!!! Good luck :)
Alika [10]

Answer:

See below

Step-by-step explanation:

Let's take it part by part:

(3-4)+(11+21)-3

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28

6 0
3 years ago
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I have no idea! Please help 11 points. Correctly
Kobotan [32]
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4 years ago
In the 3rd century bc the egyptians used their body parts to measure things.Why do you think peoplebinvented measurement system
Bingel [31]
In order to have an accurate measurement system, humans would’ve had to have created one. Although body parts could be used to measure things, the lengths would’ve been different everytime. This is because no human’s body part is the exact same length as another’s. Everybody’s bone structure is different so in order to create a universally correct measurement system, humans had to invent a new one.
8 0
3 years ago
the length of a rectangle is 3 times the width, and the perimeter is 144cm what is the length and with
solong [7]

Answer:

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