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3 years ago

Simplify: (3+√5)(4-√5)

Mathematics

2 answers:

vovikov84 [41]3 years ago

6 0

Answer:

7+√5

Step-by-step explanation:

olganol [36]3 years ago

6 0

Answer:

7+ $\sqrt{5}$

Step-by-step explanation:

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A right triangle has legs measuring 4.5 meters and 1.5 meters. The lengths of the legs of a second triangle are proportional to

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You decide to put $5000 in a savings account to save $6000 down payment on a new car. If the account has an interest rate of 7%

bezimeni [28]

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$\bf 6000=5000\left(1+\frac{0.07}{12}\right)^{12\cdot t}\implies \cfrac{6000}{5000}\approx (1.0058)^{12t}\implies \cfrac{6}{5}\approx(1.0058)^{12t} \\\\\\ \log\left( \cfrac{6}{5} \right)\approx \log[(1.0058)^{12t}]\implies \log\left( \cfrac{6}{5} \right)\approx 12t\log(1.0058) \\\\\\ \cfrac{\log\left( \frac{6}{5} \right)}{12\log(1.0058)}\approx t\implies 2.63\approx t\impliedby \textit{about 2 years, 7 months and 16 days}$

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4 years ago

WILL MARK BRAINLIEST!!!PLZ HELP!!!

Andrei [34K]

Answer:

Step-by-step explanation:

Hello,

"Ray says the third-degree polynomial has four intercepts. Kelsey argues the function can have as many as three zeros only."

We know that Kelsey is right, a polynomial of degree 3 has maximum 3 zeroes, so it means that the graph of this polynomial has maximum 3 x-intercepts.

So how Ray can be right too?

we need to think of y-intercept, if we add the y-intercept then Ray can be right too,

as you can see in one example below

there are 3 x-intercepts and 1 y-intercept.

This being said, Ray is not always right. For instance $x^3$

has only 1 zero (multiplicity 3) its graph has only 1 intercept in the point (0,0)

hope this helps

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3 years ago