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3 years ago

Help me please thank you

Mathematics

1 answer:

disa [49]3 years ago

5 0

Answer:

I can help you with this question.

Step-by-step explanation:

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Help please and thanks

kotykmax [81]

Last one is correct

5 0

4 years ago

A. A frog is climbing out of a well that is 8 feet deep. The frog can climb 4 feet per

Fiesta28 [93]

Answer:

A: 5 hrs. B: 14 hrs. and 40 min.

Step-by-step explanation:

too long to explain.

4 0

4 years ago

the length of a rectangle is five times it’s width. if the perimeter of the rectangle is 72 yd find its area

mrs_skeptik [129]

Answer:

Try sketching an image of the rectangle. Area = length x width. To find the perimeter you would add up the length of all four sides.

Step-by-step explanation:

7 0

2 years ago

A calculator is required to obtain the final answer on this question. A solid metal sphere at room temperature 20oC is dropped i

yKpoI14uk [10]

Answer:

T = 47.1875°C

Step-by-step explanation:

Given:

Surrounding temp, Ts = 100°C

Initial Temperature ,T0= 20°C

Increase in temperature = 15°C

Final temperature, T = 20 + 15 = 35°C

Time, t = 9 seconds

Let's take Newton's law of cooling:

$T - Ts = (T_0 - Ts)e^k^t$

We'll solve for k

$35 - 100 = (20 - 100)e^9^k$

$-65 = (-80)e^9^k$

Divide both sides by -5

$13 = (16)e^9^k$

$9k = ln (\frac{13}{16})$

$k = \frac{1}{9} ln (\frac{13}{16})$

$k = -0.02307104053$

Let's now find the temperature of the ball after 18 seconds in boiling water.

Use the Newton's equation again:

$T - Ts = (T_0 - Ts)e^k^t$

$T - 100 = (20 - 100)e^-0.0^2^3^0^7^1^0^4^0^5^3^*^1^8$

$T - 100 = (-80)e^-0.0^2^3^0^7^1^0^4^0^5^3^*^1^8$

$T - 100= -52.8125$

$T = 100 - 52.8125$

T = 47.1875°C

Temperature of the ball after 18 seconds in boiling water is 47.1875°C

5 0

4 years ago

The function g is given in three equivalent forms.

aleksklad [387]

Answer:

A) g(x)= 1/2(x-8)^2-8. The vertex is (8, -8).

Step-by-step explanation:

A. g(x)= 1/2(x-8)^2-8 is the vertex form of the function.

In general it can be written as

f(x) = a(x - h)^2 + k where (h, k) is the vertex.

Here the vertex is (8, -8)

5 0

3 years ago

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