What is the discriminant of 3x^2+6x=2

1 answer:

7 0

$ax^2+bx+c=0\\\\the\ discriminant:\Delta=b^2-4ac\\============================\\\\3x^2+6x=2\ \ \ \ \ |subtract\ 2\ from\ both\ sides\\\\3x^2+6x-2=0\\\\a=3;\ b=6;\ c=-2\\\\\Delta=6^2-4\cdot3\cdot(-2)=36+24=\boxed{60}\leftarrow answer$

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Judy Clark went to Reel Bank. She borrowed $7,800 at a rate of 6 1/2%. The date of the loan was September 2. Judy hoped to repay

abruzzese [7]

Answer:

$7995.85

Step-by-step explanation:

We will use simple interest formula to solve our given problem.

$A=P(1+rt)$ , where,

A = Amount after t years,

P = Principal amount,

r = Annual interest rate in decimal form,

t = Time in years.

$r=6.5\%=\frac{6.5}{100}=0.065$

$t=\text{141 days}=\frac{141}{365}\text{ year}$

$A=\$78001+0.065\times \frac{141}{365})$

$A=\$7800(1+0.065\times 0.38630136986)$

$A=\$7800(1+0.025109589041)$

$A=\$7800(1.025109589041)$

$A=\$7995.85479$

$A\approx \$7995.85$

Therefore, Judy will will pay back on January 20: <u>$7995.85</u>.

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3 years ago

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Fudgin [204]

The answer is 15 because I checked it with Socratic

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3 years ago

A square pyramid is shown below: What is the surface area of the pyramid?

Reptile [31]

Well first you would find the area of the square on the bottom
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0.7*0.7= .49
Then we would find the area of one of the triangles on the side:
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Next, you will multiply the 2.8 by 4, because there are 4 triangles:
2.8*4=11.2
Finally add the 11.2 to the area of the square, and you'll have your answer.
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