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4 years ago

PLEASE PLEASE HELP MEEE!!

Mathematics

1 answer:

Brilliant_brown [7]4 years ago

7 0

Answer:

The y intercept is where the line crosses the y axis which is at y=15

The x intercept is where the line crosses the x axis which is x=300

The slope is the rate of change or the y of the second point minus the y of the first over the x of the second point minus the x of the first shown as y2-y1/x2-x2 and is stated as rise over run

The slope is 1/20

Step-by-step explanation:

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Can anyone help on 51, 52, and 53? It is due by 12:00 tomorrow.

stealth61 [152]

area
51: 147.5
52: 108
53: 78.80
Sorry Im having trouble finding the perimeter but Hope i helped with the area =)

8 0

3 years ago

Y=-4x+2 X. Y -1 0 1 2

vovikov84 [41]

Y = -4x+2
x = -1
-4(-1) + 2 = /// 6 = y

x = 0
-4(-1) + 2 = /// 2 = y

x=1
-4(1) + 2 = /// -2 = y

x=2
-4(2) + 2 /// -6 = y

8 0

3 years ago

Use the "rule of 72" to estimate the doubling time (in years) for the interest rate, and then calculate it exactly. (Round your

Law Incorporation [45]

Answer:

According to the rule of 72, the doubling time for this interest rate is 8 years.

The exact doubling time of this amount is 8.04 years.

Step-by-step explanation:

Sometimes, the compound interest formula is quite complex to be solved, so the result can be estimated by the rule of 72.

By the rule of 72, we have that the doubling time D is given by:

$D = \frac{72}{Interest Rate}$

The interest rate is in %.

In our exercise, the interest rate is 9%. So, by the rule of 72:

$D = \frac{72}{9} = 8$ .

According to the rule of 72, the doubling time for this interest rate is 8 years.

Exact answer:

The exact answer is going to be found using the compound interest formula.

$A = P(1 + \frac{r}{n})^{nt}$

In which A is the amount of money, P is the principal(the initial sum of money), r is the interest rate(as a decimal value), n is the number of times that interest is compounded per unit t and t is the time the money is invested or borrowed for.

So, for this exercise, we have:

We want to find the doubling time, that is, the time in which the amount is double the initial amount, double the principal.

is double the initial amount, double the principal.

$A = 2P$

$r = 0.09$

The interest is compounded anually, so $n = 1$

$A = P(1 + \frac{r}{n})^{nt}$

$2P = P(1 + \frac{0.09}{1})^{t}$

$2 = (1.09)^{t}$

Now, we apply the following log propriety:

$\log_{a} a^{n} = n$

So:

$\log_{1.09}(1.09)^{t} = \log_{1.09} 2$

$t = 8.04$

The exact doubling time of this amount is 8.04 years.

4 0

4 years ago

(3-4i)(-2-21) multiply

evablogger [386]

Answer:

-69 +92 i (here 'i' is imaginary value)

Step-by-step explanation:

step:-

Given (3-4 i)(-2-21)

on multiplication, we get

(3-4 i)(-2-21) = 3(-2) -3(21) - 4 i (-2) +4 i(21)

= -6 -63 + 8 i +84 i

= -69 +92 i

-69 + 92 i is a complex number.

real part x = -69

imaginary part y = 92

6 0

4 years ago

What is the best approximation for the circumference of a circle with a diameter of 300 ft?

Shtirlitz [24]

Easy, since you have the diameter, which is very needed in order to find the circumference, you can use the equation d x 3.14 = c. d is the diameter and c is the circumference to 300 x 3.14 = 942 ft

4 0

3 years ago

Read 2 more answers