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3 years ago

Please solve for me

Mathematics

1 answer:

kondaur [170]3 years ago

7 0

Answer:

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Step-by-step explanation:

Szjnznz s8sbbsnsjs

Mzmzmznzm

Mzmsmxmx

Mzmxmkx

Km mmx

Zkskms

Kzmz

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What is the square root of 81/100

Natali5045456 [20]

The square root of 81/100

equals...
9/10

Good Luck! :)

8 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

4 years ago

Find the distance between points 5,9 and (7,-7) using the distance formual

mart [117]

========================================
Formula to find Distance:
========================================
$\text{Distance = } \sqrt{X2-X1)^2 + (Y2-Y1)^2}$

========================================
Find Distance between (5, 9) and (7, -7):
========================================

X2 = 5, X1 = 7, Y2 = 9, Y1 = -7, therefore,

$\text{Distance = } \sqrt{(9+7)^2 + (5-7)^2}$
$\text{Distance = } \sqrt{(16)^2 + (2)^2}$
$\text{Distance = } \sqrt{256 + 4}$
$\text{Distance = } \sqrt{260}$
$\text{Distance = } 16.12 \text{ units}$

========================================
Answer: 16.12 units
========================================

5 0

3 years ago

Pls help and explain you need to simplify a equation

crimeas [40]

Your answer will be x • 4³ = 64x
When simplifying powers, the rule is that if you’re dividing two powers with the same base (in this case the base is 4), you need to subtract the powers. For example, 3³ ÷ 3² = 3 (which is 3^1).
Using this rule, we can see that 4^8 ÷ 4^5 = 4^(8-5) = 4³.
The x is on top of the fraction and we’re not dividing by an x, so it doesn’t change. Therefore your final answer is 64x.
I hope this helps!

5 0

3 years ago

Express 6 h 20 min in seconds.<br> Answer in units of s.

Maslowich

22,800s is your answer

3 0

3 years ago

Please solve for me ​

Please solve for me