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3 years ago

6

after 14 years, what is the total amount in an account paying 6.4% monthly interest, if $3,800 is initially deposited and no oth

er transactions are made?

1 answer:

SCORPION-xisa [38]3 years ago

8 0

Multiply 3800 by 14 by 6.4% and you will get your answer

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if selina 8% commission on sales.on one sale,her commission was $20.40.what was the amount of that sales

Art [367]

Answer:

255

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3 years ago

Which graph represents the function of f(x) = the quantity of 4 x squared minus 16, all over 2 x minus 4? (2 points)

Whitepunk [10]

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2 years ago

Explain the different types of motion of a sewing machine

Lana71 [14]

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4 0

3 years ago

The enrollment at Ousley Jr. High School dropped by 60 students over a 5-year period. What is the average yearly drop in enrollm

Snezhnost [94]

Answer:

The average yearly drop in enrollment is 12.

Step-by-step explanation:

The average refers to the central value in a group of numbers and with the information provided, you can find the average by dividing the number of students that dropped out of the school by the number of years over which that ocurred:

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3 0

3 years ago

Stella [2.4K]

<u>Question:</u>

Find the number of real number solutions for the equation. x^2 + 5x + 7 = 0

<u>Answer:</u>

The number of real solutions for the equation $x^{2}+5 x+7=0$ is zero

<u>Solution:</u>

For a Quadratic Equation of form : $a x^{2}+b x+c=0$ ---- eqn 1

The solution is $x=\frac{-b \pm \sqrt{b^{2}-4 a c}}{2 a}$

Now , the given Quadratic Equation is $x^{2}+5 x+7=0$ ---- eqn 2

On comparing Equation (1) and Equation(2), we get

a = 1 , b = 5 and c = 7

In $x=\frac{-b \pm \sqrt{b^{2}-4 a c}}{2 a}$ , $b^2 - 4ac$ is called the discriminant of the quadratic equation

Its value determines the nature of roots

Now, here are the rules with discriminants:

1) D > 0; there are 2 real solutions in the equation

2) D = 0; there is 1 real solution in the equation

3) D < 0; there are no real solutions in the equation

Now let solve for given equation

$D= b^2 - 4ac\\\\D = 5^2 - 4(1)(7)\\\\D = 25 - 28 \\\\D = -3$

Since -3 is less than 0, this means that there are 0 real solutions in this equation.

4 0

3 years ago