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3 years ago

8

Helen Weller invested 10,000 in an account that pays 3% simple interest. how much additional money must be invested in an accoun

t that pays 6% simple interest so that the average return on the two investments amounts to 4%? show work plz

1 answer:

Naddika [18.5K]3 years ago

4 0

Answer:

3% is 300 in intrest

6% is 600 in intrest

4% is 400 in intrest

Step-by-step explanation:

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2 years ago

What are the coordinates of the x-intercepts of the parabola y = x² - 8x + 15?

tamaranim1 [39]

Answer:

(3, 0) and (5, 0)

Step-by-step explanation:

we have

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we know that

The x-intercepts are the values of x when the value of y is equal to zero

so

For y=0

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The formula to solve a quadratic equation of the form

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is equal to

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in this problem we have

$x^{2}-8x+15=0$

so

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substitute in the formula

$x=\frac{-(-8)\pm\sqrt{-8^{2}-4(1)(15)}} {2(1)}$

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2 years ago