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2 years ago

What's the annual interest for a principle of $3500 at a simple annual interest rate of 2.3%

Mathematics

2 answers:

Lisa [10]2 years ago

6 0

$80.5 is the right answer.
We divide 3500 by 100 and then multiply the answer to 2.3

I am Lyosha [343]2 years ago

3 0

I=prt
I. Interest
P. Principal
R. Interest rate
T. Time
I=3,500×0.023×1
I=80.5

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Find the product and sum of the roots of the equation:<br> 2x^2-9x-10=0

BabaBlast [244]

Answer:

<h3> sum of the roots: $x_1+x_2=4\frac12$ </h3><h3> product of the roots: $x_1x_2=-5$ </h3><h3> Step-by-step explanation:</h3>

$2x^2-9x-10=0\quad\implies\quad a=2\,,\ b=-9\,,\ c=-10$

$b^2-4ac=(-9)^2-4(2)(-10)=81+80=161>0$

From Vieta's formulas applied to quadratic polynomial we have:

if $b^2-4ac\geqslant0$ then

sum of roots: $x_1+x_2=-\dfrac ba=-\dfrac{-9}2=4\frac12$

product of the roots: $x_1x_2=\dfrac ca=\dfrac{-10}2=-5$

3 0

2 years ago

7/4x^2 -2 = - 0.05x + 4

nata0808 [166]

Answer:

$x1=\frac{-2-2\sqrt{29401} }{245} x2=\frac{-2+2\sqrt{29401} }{245}$

Step-by-step explanation:

Step One: Convert

49/16x^2-2=-0.05x+4

Step Two: Multiply Both Sides by 80

245x^2-160=-4x+320

Step Three: Move everything to the left

245x^2+4x-480=0

Final Step: Quadratic Formula

$x1=\frac{-2-2\sqrt{29401} }{245} x2=\frac{-2+2\sqrt{29401} }{245}$

6 0

3 years ago

I really need help Can someone help me

denis-greek [22]

The answer is 3.800 because you round up

6 0

3 years ago

One is 25% of what number

Sergio039 [100]

Answer:

5 i think

Step-by-step explanation:

what your asking is 5x5? so 25

4 0

2 years ago

Read 2 more answers

There is a line whose y-intercept is 5 and whose slope is 1. What is its equation in

Mkey [24]

Answer:

y = x + 5

Step-by-step explanation:

y = mx + b

m -> slope ; m = 1

b -> y-intercept ; b = 5

y = 1x + 5

3 0

2 years ago