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3 years ago

OMGGG!!! ACTUALLY SOMEONE PLEASE HELP!!! PLEASE!!! THIS IS PAST DUE!!! HELLLLP!! ANSWER ALL!!!!! HELP ME!!!!

Mathematics

1 answer:

8_murik_8 [283]3 years ago

5 0

y-intercept: 8

slope: 1/2

equation: 1/2x + 8

Hope this helps! :)

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PLZZZZZZ SOMMMEONEEEE HELLLPPPPPP

serious [3.7K]

Answer:

$9^{12}$

Step-by-step explanation:

Using the rule of exponents

$(a^m)^{n}$ = $a^{mn}$ , then

$(9^3)^{4}$ = $9^{3(4)}$ = $9^{12}$

3 0

3 years ago

Help please :c

sdas [7]

Answer:

1/4

3/8

5/8

2/5

Step-by-step explanation:

From the table :

1.)

P(9th grade) = (9th grade total / total) = 4 / 16 = 1/4

2.)

P(comedy) = (comedy total / total) = 6 / 16 = 3/8

3.)

P(not action) = 1 - P(action) = 1 - (action total / total) = (1 - 6/16) = 1 - 3/8 = 5/8

4.)

P(comefy | 10th grade) = P(comedy n 10th grade) / P(10th grade) = 2 / 5

7 0

3 years ago

Read 2 more answers

My Notes OAsk Your Tea The radioactive isotope of lead, Pb-209, decays at a rate proportional to the amount present at time t an

Papessa [141]

Answer:

10.96 hours will take for 85% of the lead to decay.

Step-by-step explanation:

Suppose A represents the amount of Pb-209 at time t,

According to the question,

$\frac{dA}{dt}\propto A$

$\implies \frac{dA}{dt}=kA$

$\int \frac{dA}{A}=\int kdt$

$ln|A|=kt+C_1$

$A=e^{kt+C_1}$

$A=e^{C_1} e^{kt}$

$\implies A=C e^{kt}$

Let $A_0$ be the initial amount,

$A_0=C e^{0} = C$

$\implies A=A_0 e^{kt}$

Since, the half-life of 3.3 hours.

$\implies \frac{A_0}{2}=A_0 e^{3.3k}\implies e^{3.3k}=0.5\implies k=-0.21004$

$\implies A=A_0 e^{-0.21004t}$

Here, $A_0=1\text{ gram}$

$A=(100-85)\% \text{ of }A_0=15\%\text{ of }A_0=0.15A_0$

By substituting the values,

$0.15A_0=A_0 e^{-0.21004t}$

$0.15=e^{-0.21004t}$

$\implies t\approx 10.96\text{ hour}$

6 0

3 years ago

What is the ratio of the total coins in Andrew's coin jar to the total coins in Staci's coin jar?

sammy [17]

Answer:the answer is D. 25:44

Step-by-step explanation: the first step is to do the cumulative total of Andrew's number of coins(100).

Then you do the cumulative total of Staci's coins(176).

After you find the cumulative total of them both, since it is Andrew:Staci, you will ratio Andrew's total to Staci's.

Which is 100:176 .

Then from here you reduce this to the lowest term

7 0

3 years ago

The height of a football, in feet, t seconds after it is kicked into the air off of a tee, is modeled by the function h(t) = –16

WARRIOR [948]

The function is:
f ( t ) = - 16 t² + 35 t + 0.25
We can use the derivative:
f ` ( t ) = - 32 t + 35
- 32 t + 35 = 0
t = 35 : 32 = 1.09375 s
The maximum height is:
f ( 1.09375 ) = - 16 · ( 1.09357 )² + 35 · 1.09357 + 0.25 =
= - 19.14 + 38.28125 + 0.25 = 19.39 ft ≈ 19.4 ft.
Answer: The approximate maximum height of the ball is 19.4 ft.

3 0

3 years ago