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marusya05 [52]
3 years ago
15

Solve the system of equations given below

Mathematics
1 answer:
yaroslaw [1]3 years ago
5 0

Answer:

idek

Step-by-step explanation:

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Can some one please help me on this one?
MatroZZZ [7]
Convert 23 lbs to ounces (23 lbs is 368 ounces)
add 3 (371)
7 0
4 years ago
Alexander invested $320 in an account paying an interest rate of 1.5% compounded annually. Assuming no deposits or withdrawals a
grin007 [14]

Answer:

$406.40

Step-by-step explanation:

First, converting R percent to r a decimal

r = R/100 = 1.5%/100 = 0.015 per year.

Solving our equation:

A = 320(1 + (0.015 × 18)) = 406.4

A = $406.40

8 0
3 years ago
Is 1.5/7.5 a rational number
MissTica
A rational number is a number that can be written as a simple fraction (as a ratio) and an irrational number is a number that cannot be written as a simple fraction (irrational means not rational) Example: 1.5 is rational because it can be written as 3/2. 7.5 is rational because it can be written as 15/2, so in my mind, yes it is rational because both top and bottom are rational. Hope this helped!! :):) 
4 0
4 years ago
Will the solutions to the equation 12x2-5x-2=0 be positive or negative and how would you know without solving the equation compl
SOVA2 [1]
For this case we have the following equation:
 12x2-5x-2 = 0
 Using the resolver we have:
 x = (- b +/- root (b ^ 2 - 4 * a * c)) / (2 * a)
 Substituting values we have:
 x = (- (- 5) +/- root ((- 5) ^ 2 - 4 * 12 * (- 2))) / (2 * 12)
 Rewriting:
 x = (5 +/- root (25 +96))) / (2 * 12)
 x = (5 +/- root (121))) / (2 * 12)
 x = (5 +/- 11) / (2 * 12)
 Answer:
 
One root is positive and another is negative.
6 0
3 years ago
A room contains three urns: u1, u2, u3. u1 contains 3 red and 2 yellow marbles. u2 contains 3 red and 7 yellow marbles. u3 conta
Archy [21]

Answer:

\dfrac{11}{30}

Step-by-step explanation:

Urn U1: 3 red and 2 yellow marbles, in total 5 marbles.

The probability to select red marble is \dfrac{3}{5}=0.6.

Urn U2: 3 red and 7 yellow marbles, in total 10 marbles.

The probability to select red marble is \dfrac{3}{10}=0.3.

Urn U1: 1 red and 4 yellow marbles, in total 5 marbles.

The probability to select red marble is \dfrac{1}{5}=0.2.

The probability to choose each urn is the same and is equal to \frac{1}{3}.

Thus, the probability that the marble is red is

\dfrac{1}{3}\cdot 0.6+\dfrac{1}{3}\cdot 0.3+\dfrac{1}{3}\cdot 0.2=\dfrac{1.1}{3}=\dfrac{11}{30}.

4 0
3 years ago
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