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Juliette [100K]

3 years ago

15

The Petersons deposited $1,000 in an account that earns 2% annual simple interest. How many years will it take the amount in the

account to double?

1 answer:

Svetlanka [38]3 years ago

7 0

Each year it will gain $10 so it will take 50 years.

1,000 × .02 = 20
1,000 ÷ 20 = 50

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Y = 5x^2 - 10<br> what is the rate of change ?<br> is the function linear or non linear ? why ?

Svetlanka [38]

Answer:

Step-by-step explanation:

Are you in Calculus? These are calculus concepts!

To calculate the rate of change here you must specify an interval, e. g., "what is the rate of change on the interval (0, 3)?"

If you know calculus: The 'rate of change' on the interval (a, b) is

f(b) - f(a)

r. of c. = --------------------

b - a

Have you used this formula before?

Because of the 'x^2' term this is NOT a linear function.

If you want more explanation, provide an interval on which you want the average rate of change and ask specific questions of your own.

6 0

3 years ago

3 over 8 multiplied by 10 over 9 multiplied by 16

Gnom [1K]

Answer:

20/3

Step-by-step explanation:

(3/8)*(10/9)*16

This is 30/72 = 5/12

5/12*16=20/3

7 0

1 year ago

Read 2 more answers

HELP ME PLEASE HELP ME I BEG YOU I RELLLAY NNED TO SUMBIT THIS

Rashid [163]

#1
y= 5x-7
y= -2/3x+3

#2
y=4/5x (+0)
y= -5/4x(+0)

5 0

3 years ago

Look at the graph below.<br> what is the slope of the line ?

kykrilka [37]

Answer:

The slope is $-\frac{1}{5}$ .

Step-by-step explanation:

Choose 2 points on the graph.

(7,3) and (2,2)

Use slope formula: $\frac{y2-y1}{x2-x1}$

$\frac{2-3}{2-7}$ = $\frac{-1}{-5}$

The slope is $-\frac{1}{5}$ .

8 0

2 years ago

Read 2 more answers

Use the quadratic formula to solve the equation.

Sergeeva-Olga [200]

ANSWER

$x = \frac{ 5 - \sqrt{ 5} }{4} \: or \: \: x = \frac{ 5 + \sqrt{ 5} }{4}$

EXPLANATION

The given quadratic equation is

$4 {x}^{2} - 10x + 5 = 0$

We compare this to

$a {x}^{2} + bx + c = 0$

to get a=4, b=-10, and c=5.

The quadratic formula is given by

$x = \frac{ - b \pm \sqrt{ {b}^{2} - 4ac} }{2a}$

We substitute these values into the formula to get:

$x = \frac{ - - 10 \pm \sqrt{ {( - 10)}^{2} - 4(4)(5)} }{2(4)}$

This implies that

$x = \frac{ 10 \pm \sqrt{ 100 - 80} }{8}$

$x = \frac{ 10 \pm \sqrt{ 20} }{8}$

$x = \frac{ 10 \pm2 \sqrt{ 5} }{8}$

$x = \frac{ 5 \pm \sqrt{ 5} }{4}$

The solutions are:

$x = \frac{ 5 - \sqrt{ 5} }{4} \: or \: \: x = \frac{ 5 + \sqrt{ 5} }{4}$

7 0

3 years ago

Read 2 more answers