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3 years ago

15 POINTS photo includeda: 2b: 5c 3d: 4

Mathematics

1 answer:

Leno4ka [110]3 years ago

5 0

a: 2

b: 5

c 3

d: 4
I think the ans is 2

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Whats the answer? A, B, C, or D?

Firdavs [7]

The answer is the second choice.

P (pounds) = 5D (Dollars)

Hope this might help!

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3 years ago

.02, 0.2, ___, 20, ___, __<br> What's the pattern?

Bingel [31]

You are multiplying by 10 each time so it is:
.02, 0.2, 2, 20, 200, 2000

7 0

3 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

3 years ago

A triangle has two side of length 3 and 7. The third side of this triangle must not be shorter than (blank) or longer than (blan

Marina86 [1]

Answer:

The sum of two side lengths of a triangle must be greater than the length of the third.

So, if two side lengths are 3 and 7, the length of the third side must be less than 10 units.

However, it cannot be shorter than 4 units, as 3 + 4 = 7.

So your answer is: The third side of this triangle must not be shorter than 4 or longer than 10

Let me know if this helps!

5 0

2 years ago

Which equations are in standard form ? y=2x+5b<br> 2x+3y=-6

Keith_Richards [23]

Answer: 2x + 3y = -6 is standars form

Step-by-step explanation: Standard form is when the quation is written as Ax + By = C

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3 years ago