David bought 4 pounds of meat for a family barbecue.

-23 ≥ 4 - 3k<br> Show work

NNADVOKAT [17]

The answer is -9 >(the same symbol I just don’t have it in my keyboard, sorry)k
-9>k

6 0

4 years ago

What is the solution for the equation 14.8 equals n -0.3

vodomira [7]

Hello there!

$14.8=n-0.3$

Answer:

$\boxed{n=15.1=15.0}$

You can also round up to the nearest tenths is 15.1 to 15.0 and its going to be stay.

Step-by-step explanation:

First you had to switch sides of equation form.

$n-0.3=14.8$

Then you add by 0.3 from both sides of equation form.

$n-0.3+0.3=14.8+0.3$

And finally, simplify by equation. You can also cross out by -0.3+0.3 and it gave us equal to zero. Then you add 14.8+0.3 and it equal to 15.1. You had to used their variable and its should be the right answer.

$n=15.1$

Hope this helps!

And thank you for posting your question at here on brainly, and have a great day.

-Charlie

6 0

3 years ago

We saw that a differential equation describing the velocity v of a falling mass subject to air resistance proportional to the in

Vera_Pavlovna [14]

Answer:

a) v(t) = [(Kv₀ - g) e⁻ᴷᵗ + g]/K

where K = k/m

v(t) = [((kv₀/m) - g) e⁻ᴷᵗ + g] (m/k)

b) Terminal velocity = mg/k

c) s(t) = (gt/K) - [(Kv₀ - g) e⁻ᴷᵗ]

where K = k/m

s(t) = (mgt/k) - [((kv₀/m) - g))e⁻ᴷᵗ]

Step-by-step explanation:

m(dv/dt) = mg-kv

Divide through by m

(dv/dt) = g - (k/m)v

Let k/m = K

dv/dt = g-Kv

dv/(g - Kv) = dt

∫ dv/(g - Kv) = ∫ dt

∫ dv/(Kv - g) = - ∫ dt

(1/K) In (Kv - g) = -t + c (where c = constant of integration)

In (Kv - g) = - Kt + Kc

At t = 0, v = v₀

In (Kv₀ - g) = Kc

c = (1/K) In (Kv₀ - g)

In (Kv - g) = - Kt + Kc becomes

In (Kv - g) = - Kt + In (Kv₀ - g)

In (Kv - g) = [In (Kv₀ - g)] - Kt

Kv - g = (Kv₀ - g) e⁻ᴷᵗ

Kv = (Kv₀ - g) e⁻ᴷᵗ + g

v(t) = [(Kv₀ - g) e⁻ᴷᵗ + g]/K

K = k/m

v(t) = [((kv₀/m) - g) e⁻ᴷᵗ + g] (m/k)

b) At terminal velocity, dv/dt = 0

From the starting differential equation,

m(dv/dt) = mg-kv

mg - kv = 0

kv = mg

v = mg/k

c) v = ds/dt = [(Kv₀ - g) e⁻ᴷᵗ + g]/K

(ds/dt) = [(Kv₀ - g) e⁻ᴷᵗ + g]/K

Kds = [(Kv₀ - g) e⁻ᴷᵗ + g] dt

∫ Kds = ∫ [(Kv₀ - g) e⁻ᴷᵗ + g] dt

Ks = -K((Kv₀ - g) e⁻ᴷᵗ) + gt

s(t) = (gt/K) - [(Kv₀ - g) e⁻ᴷᵗ]

K = k/m

s = (mgt/k) - [((kv₀/m) - g))e⁻ᴷᵗ]

4 0

3 years ago

Can someone help asap please

Zanzabum

Part A
If 2 inches is 25 miles, then you can set up a ratio to find how many inches 60 miles is.
2 inches equaling 25 miles would be 2:25 in a ratio form of inches:miles.
If miles equals 60, then the ratio would be x:60 in inches:miles.
Since both sides must have the same thing done to them, divide 60 by 25 to see how much miles was multiplied by to get to 60, then multiply inches by that to get x.
60 / 25 = 2.4
2 • 2.4 = 4.8
So the answer to part A is 4.8 inches represent 60 miles.

Part B
You can do the same concept for Part B.
1/4 = 0.25
In a ratio of inches:miles, this would be 0.25:x
Since the original ratio is 2:25, you must figure out how many times 1/4 goes into 2.
2 = 2/1 = 4/2 = 8/4
So 1/4 goes into 2, which can be represented by 8/4, 8 times.
This means 2 was divided by 8 to get 0.25.
Now divide 25 by 8 to get x.
25 / 8 = 3.125
So the answer to part B is 3.125 miles are represented by 1/4 inch.

7 0

4 years ago

△BCD is a right triangle. The length of the hypotenuse is 18 centimeters. The length of one of the legs is 14 centimeters. Wha

Romashka-Z-Leto [24]

Answer:

The answer to your question is b = 11.31 cm or 8 $\sqrt{2}$ cm

Step-by-step explanation:

Data

hypotenuse = 18 cm

one leg = 14 cm

second leg = ?

Process

1.- Use the Pythagorean Theorem to solve this problem

c² = a² + b²

c = hypotenuse

a = longer leg

b= shorter leg

2.- Substitution

18² = 14² + b²

-Solve for b

b² = 18² - 14²

-Simplify

b² = 324 - 196

b² = 128

-Find the prime factors of 128

128 2

64 2

32 2

16 2

8 2

4 2

2 2

1

128 = 2⁶2¹

-Result

b = 11.31 or 8 $\sqrt{2}$

5 0

3 years ago