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il63 [147K]
3 years ago
10

PLEASE HELP I WILL MAKE BRAINEST UGH

Mathematics
1 answer:
Alenkasestr [34]3 years ago
4 0
It's the first one---------------------
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The difference of the square of a number and 28 is equal to 3 times that number
Pepsi [2]

Answer:

- 4, 7

Step-by-step explanation:

Let the required number be x.

Therefore, according to the given condition:

{x}^{2}  - 28 = 3x \\  {x}^{2}  - 3x - 28 = 0 \\  {x}^{2}  - 7x + 4x - 28 = 0 \\ x(x - 7) + 4(x - 7) = 0 \\ (x - 7)(x + 4) = 0 \\ x - 7 = 0 \: or \: x + 4 = 0 \\ x = 7 \: or \: x =  - 4 \\

5 0
3 years ago
Please help ASAP! Willing to give brainliest if correct!
Vsevolod [243]

An equal mass of silver will displace a different volume of fluid than that displaced by gold.

<h2>Archimedes principle</h2>

According to the Archimedes principle, when an object is partially or completely immersed in water, the object will experience a force that displaces its own weight of fluid.

Therefore, when the jeweler deceptively replaced “an equal weight” (or equal mass) of gold with silver, we can know that by observing the volume of water displaced in each case. An equal mass of silver will displace a different volume of fluid than that displaced by gold.

Learn more about Archimedes principle: brainly.com/question/13106989

6 0
3 years ago
Find the perimeter of the shape<br> 5cm<br> 6cm<br> 17cm<br> 8cm<br> Perimeter = [perimeter] cm
exis [7]
To find perimeter you add up all the sides so 5cm+6cm+17cm+8cm. This will get you 36cm.
8 0
3 years ago
Help in 5 plz I will give brainlist
elena-14-01-66 [18.8K]
M=14.6 (is rounded to the nearest tenth.)
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4 years ago
Howard downloaded 6 more songs than Erin. Lee downloaded 3 more than Howard. Lee downloaded 16 songs.How many songs did Erin dow
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Erin downloaded 7 songs

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3 years ago
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