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4 years ago

WILL MARK BRAINLIST please help! Im stuck

Mathematics

1 answer:

forsale [732]4 years ago

7 0

Answer:

width = 5k²

length = 3k² + 7k + 4

Step-by-step explanation:

(see attached)

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what is the probability of rolling a 3 on two consecutive roll of a fair dice round your answer to the nearest hundred

Wittaler [7]

Answer:

do you want probability in fraction, percent, or decimal form?

Step-by-step explanation:

their is one 3 on a regular dice which has 6 numbers

this gives you the fraction 1/6

but since you are rolling the dice twice you would have 1/6 × 1/6 giving you 1/36

if in percent form this would be 2.77777778% or rounded to 3%

and decimal form as 0.0277777778 or rounded to 0.03%

5 0

3 years ago

An investment of $8,000 earns interest at an annual rate of 7% compounded continuously. Complete parts (A) and (B) below. Click

Sergeeva-Olga [200]

Answer:

A. $\mathtt{\dfrac{dA}{dt}|_{t=2}=644.15}$

B. $\mathtt{\dfrac{dA}{dt}|_{t = 5.79}= 839.86 }$

Step-by-step explanation:

Given that:

An investment of Amount = $8000

earns at an annual rate of interest = 7% = 0.07 compounded continuously

The objective is to :

A) Find the instantaneous rate of change of the amount in the account after 2 year(s).

we all know that:

$A = Pe^{rt}$

where;

$A = (8000) \ e ^{0.7t}$

The instantaneous rate of change = $\dfrac{dA}{dt}$

$\dfrac{dA}{dt} = \dfrac{d}{dt}(8000 \ e ^{0.07t} )$

$= 8000 \dfrac{d}{dt}e^{0.07 \ t}$

$\dfrac{dA}{dt}= 8000 (0.07)e^{0.07 \ t}$

$\dfrac{dA}{dt}= 560 e^{0.07 \ t}$

At t = 2 years; the instantaneous rate of change is:

$\dfrac{dA}{dt}|_{t=2}= 560 e^{0.07 \times 2}$

$\mathtt{\dfrac{dA}{dt}|_{t=2}=644.15}$

(B) Find the instantaneous rate of change of the amount in the account at the time the amount is equal to $12,000.

Here the amount = 12000

$12000 = (8000)e^{0.07 \ t}$

$\dfrac{12000 }{8000}= e^{0.07 \ t}$

$1.5= e^{0.07 \ t}$

㏑(1.5) = 0.07 t

0.405465 = 0.07 t

t = 0.405465 /0.07

t = 5.79

$\dfrac{dA}{dt}= 560 e^{0.07 \ t}$

At t = 5.79

$\dfrac{dA}{dt}|_{t = 5.79}= 560 e^{0.07 \times 5.79}$

$\mathtt{\dfrac{dA}{dt}|_{t = 5.79}= 839.86 }$

7 0

3 years ago

Please help 30 points

mihalych1998 [28]

Answer:

Step-by-step explanation:

40+16+y=180°

56+y=180°

y=180-56

y=124°

124+15+x=180°

139+x=180°

x=180-139

<em>x=41°</em>

8 0

3 years ago

How do i add a negative integer and a postive integer

adelina 88 [10]

Answer:

See below.

Step-by-step explanation:

Step 1.

Take the absolute value of the negative number.

Now both numbers are positive.

Step 2.

Subtract the smaller positive number from the larger positive number.

Step 2.

The sign of the answer is the same sign as the number with the larger absolute value.

8 0

4 years ago

Read 2 more answers

6(-2.3x- 5) + (4x + 11)

Oxana [17]

x = -1.93877551

Idk but I tried

7 0

3 years ago