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Lera25 [3.4K]
3 years ago
14

Please answer both of the questions pleaseeee

Mathematics
2 answers:
Charra [1.4K]3 years ago
5 0
9.the number is irrational
Savatey [412]3 years ago
4 0

Answer:

Question 9:

The product is irrational

Question 10:

20

10

Step-by-step explanation:

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A dime weighs about 1/12 ounce. Jody has 1 pound (16 ounces) of dimes. About how many dimes she has?
Ilya [14]
16 * 12  = 192 dimes should be your answer.
3 0
3 years ago
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Tony drove 605 miles in 11 hours At the same rate how many miles would he drive in 7 hours
Vitek1552 [10]

Answer:

He drive for 385 miles

Step-by-step explanation:

11hrs = 605 miles

1hr = 55 miles

7hr = 55 × 7

= 385 miles

7 0
3 years ago
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Abbey`s cat weighs 18 pounds. Her dog weighs 2 pounds more than half her cat`s weight. Write and evaluate an expression to show
KATRIN_1 [288]
18 divide by 2 = 9 + 2 = 11 pounds
4 0
3 years ago
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If y=e5t is a solution to the differential equation
a_sh-v [17]

Answer:

k = 30, y(t) = C_1e^{5t}+C_2e^{6t}

Step-by-step explanation:

Since y=e^{5t} is a solution, then it must satisfy the differential equation. So, we calculate the derivatives and replace the value in the equation. We have that

\frac{d^2y}{dt^2} = 25 e^{5t},\frac{dy}{dt} = 5e^{5t}

Then, replacing the derivatives in the equation we have:

25e^{5t}-11(5)e^{5t}+ke^{5t}=0 e^{5t}(25-55+k) =0

Since e^{5t} is a positive function, we have that

25-55+k = 0 \rightarrow k = 30.

Now, consider a general solution y(t) = Ae^{rt}, A \in \mathbb{R}, then, by calculating the derivatives and replacing them in the equation, we get

Ae^{rt}(r^2-11r+30)=0

We already know that r=5 is a solution of the equation, then we can divide the polynomial by the factor (r-5) to the get the other solution. If we do so, we get that (r-6)=0. So the other solution is r=6.

Therefore, the general solution is

y(t) = C_1e^{5t}+C_2e^{6t}

8 0
3 years ago
Which of the following shows a true statement? -12 + (-7) = 12 - 7
Marizza181 [45]

Answer:

ok so its the first one

Step-by-step explanation:

it shows th same kind of aleration

5 0
2 years ago
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