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3 years ago

Kristina invests $5,000 at 15% simple interest for 2 years.How much interest did Kristina earn over the 2 years?

Mathematics

1 answer:

Eduardwww [97]3 years ago

5 0

Using
SI = PRT/100
=( 5000 × 15 × 2)/100
= 50×15×2= 1500$

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Find all complex solutions of 7x^2-7x+3=0

Sedaia [141]

Answer:

The complex solutions are

$x = (\frac{7-\sqrt{35} i }{42} , ) x = \frac{7 + \sqrt{35} i }{42})$

Step-by-step explanation:

Step(i):-

Given equation 7 x² - 7 x +3=0

$x = (\frac{-b -\sqrt{b^{2}-4ac } }{2ac} , \frac{-b +\sqrt{b^{2}-4ac } }{2ac})$

Given standard equation

a x² +b x +c =0

a = 7 , b= -7 and c=3

Step(ii):-

$x = (\frac{-(-7) -\sqrt{(-7)^{2}-4(7)(3) } }{2(7)(3)} , \frac{-(-7) +\sqrt{(-7)^{2}-4(7)(3) } }{2(7)(3)})$

$x = (\frac{7-\sqrt{(49-84 } }{42} , \frac{7 +\sqrt{(49-84 } }{42})$

$x = (\frac{7-\sqrt{35i^{2} } }{42} , \frac{7 + \sqrt{35i^{2} } }{42})$

$x = (\frac{7-\sqrt{35} i }{42} , \frac{7 + \sqrt{35} i }{42})$

8 0

3 years ago

Can you please help me with this

Vitek1552 [10]

Answer:

log9

Step-by-step explanation:

Using the rules of logarithms

logx + logy = log(xy)

logx - logy = log( $\frac{x}{y}$ )

log $x^{n}$ ⇔ nlogx

Given

2(log18- log3) + $\frac{1}{2}$ log $\frac{1}{16}$

= 2(log( $\frac{18}{3}$ ) ) + log $(\frac{1}{16}) ^{\frac{1}{2} }$

= 2log6 + log $\frac{1}{4}$

= log6² + log $\frac{1}{4}$

= log36 + log $\frac{1}{4}$

= log( 36 × $\frac{1}{4}$ )

= log9

5 0

3 years ago

6 tenths + 3 thousands= how many thousandths

mixer [17]

6 tenths + 3 thousandths equals 0.603 thousandths.

8 0

3 years ago

Thank you sooooooooooooo. Much

Maksim231197 [3]

Answer:

24 inches

Step-by-step explanation:

Similar to the question you asked earlier, this question also has 3 small rectangles and we can combine it to make it a one big rectangle. The equation for the perimeter is this:

2W + 2L = P

We know W and P (the width of the small rectangles times 3), thus plugging in those values would give us:

2(30*3) + 2L = 324

180 + 2L = 324

2L = 144

L = 72

We need to divide this number by 3 to get the length of the small rectangle, which would give us 72/3 or 24.

8 0

3 years ago

Sarah spends 2/5 of her monthly income on rent. Sarah's rent is $750. What is sarah's montly income? Write an equation to solve

icang [17]

2/5m = 750
m = 750 * 5/2
m = 3750/2
m = 1875 <== monthly income

3 0

4 years ago

Read 2 more answers