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3 years ago

Good night y'all. <3

Mathematics

1 answer:

Bumek [7]3 years ago

3 0

Answer: Good night have a good sleep, bestie!~

Step-by-step explanation:

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Can someone help. pls

Elan Coil [88]

Answer: 5

Step-by-step explanation:

Pythagorean Theorem = a^2 + b^2 = c^2 (hypotenuse)

the square root of 4^2 + 3^2 = c

c = 5

3 0

3 years ago

Plsssss helpppp!!!!!

Natali5045456 [20]

Answer:

x = 19.42

Step-by-step explanation:

8²+x²=21²

64+x²=441

-64 -64

x²=377

x=19.41648784

rounded is 19.42

3 0

3 years ago

Ellie buys a baseball for $13 plus an 8% tax. Jason buys a phone case for $16 plus an 8% tax. Enter the difference in the amount

Over [174]

Ellie baseball will be $14.04 because it’s a 8% tax the difference is cheaper than Jason.

3 0

3 years ago

The sum of five times a number and -6 is -2

koban [17]

So,

"The sum of five times a number and -6"
5n + -6 or 5n - 6

"is -2"
= -2

5n - 6 = -2

Add 6 to both sides.
5n = 4

Divide both sides by 5.
$n = \frac{4}{5} \ or\ 0.8\ or\ 80\ percent$

7 0

3 years ago

Prove the polynomial identity.

Kaylis [27]

Answer:

Proven

Step-by-step explanation:

We prove the polynomial with factorization. We must first simplify the expression before we can factorize:

$(4\cdot{x^2}-2)\cdot{(4\cdot{x^2}-2)}-16\cdot{x^4}$

$16\cdot{x^4}-8\cdot{x^2}-8\cdot{x^2}+4-16\cdot{x^4}$

$4-16\cdot{x^2}$

4 is the common number and we can take it out of the expression:

$4\cdot{(1-4\cdot{x^2})}$

We can factorize further with the x term being zero. For this to be true we must have -2x and 2x to cancel out and therefore the expression is proven:

$4\cdot{(1-2\cdot{x})}\cdot{(1+2\cdot{x})}$

5 0

3 years ago