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jarptica [38.1K]

3 years ago

14

Eighteen less than three times a number is twice the number is twice the number. Define a variable, write an equation, and solve

to find the number.

1 answer:

patriot [66]3 years ago

4 0

<span>We are given

18 less than 3 times a number, which is

Twice the number, which is

So we have been given:

</span>

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n a drawing, a jar holds the numbers 1 to 8. If you draw three numbers to form a three-digit number (without replacement), what

Butoxors [25]

good evening ,

Answer:

p = (1÷8)×(1÷7)×(1÷6)

Step-by-step explanation

the probability you will draw 135 is:

(1÷8)×(1÷7)×(1÷6) = 0,002976190476

:)

3 0

3 years ago

Read 2 more answers

Two angles are complementary. One has a measure of 25 degrees. What is the measure of the other angle?

Pani-rosa [81]

Answer:

65 degrees

Step-by-step explanation:

Since complementary angles are 2 angles that add up to 90 degrees, all you have to do is subtract 25 from 90.

When you do that you get 65.

Example: 90 - 25 = 65

8 0

3 years ago

For 32 = 5X + 2, what is the first step in solving for X?

nikitadnepr [17]

Answer:

-2 from both sides

Step-by-step explanation:

32=5x+2

-2 -2

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30=5x

__=__

5 5

6=x

4 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

What is the measurement of angle C? Part C

Genrish500 [490]

No idea

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6 0

3 years ago

Read 2 more answers