Hurry!! Worth 10 points

Mathematics

1 answer:

taurus [48]3 years ago

3 0

15/2 r -40, the first answer

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10 1/3 divided by 1/3

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kotykmax [81]

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A person’s retirement account of $30,000 earns 4% each year. Which value would represent the base of the exponential function th

vivado [14]

Well, your probably gonna not go with 30,000 because it stands out like a sore thumb. and 4% is = to .04 So that would be my likely guestimation. 1.04 is probably the answer. in high school you would do 30,000(1+.04/1
)^1*1

and if you were to simplify
30,000(1+.04)
or
30,000(1.04)
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The sum of a 3 digit number and a 1 digit number is 217. The product of the numbers is 642. If one number is between 200 and 225

algol [13]

Let, the numbers be "x" and "y". Consider "x" as the triple digit number.
Now, according to the question,
x + y = 217..........................equation (1)

x * y = 642............................equation (2)

Now,
Taking equation (2),
x * y = 642
y = 642 / x..................................equation (3)

Now, Taking equation (1),
$x+y=217$

Substituting the value of y from equation (3), we get,

$x+ \frac{642}{x} =217$

$\frac{x *x+642}{x} =217$

$x^{2} +642 =217*x$

$x^{2} +642 =217x$

$x^{2} +642-217x =0$

$x^{2} -217x+642 =0$

$x^{2} -3x-214x+642 =0$

$x(x-3)-214(x-3)=0$

$(x-3)(x-214)=0$

Using zero product property,
EITHER,
x - 3 = 0
x = 3
OR,
x - 214 = 0
x = 214
Since, "x" is the triple digit number, x = 214.
Now,
Taking equation (2),
x * y = 642
Substituting the value of "x" in the equation, we get,
(214) * y = 642
y = 642 / 214
y = 3

So, the numbers are 214 and 3.

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3 years ago

state the types of roots for a quadratic equation, explaining how the discriminant helps you determine the type.

Alexeev081 [22]

<span>the discriminant formula is D = b^2 - 4ac
(idk how to put graphs or anything but yeh)
</span>

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4 years ago