2 years ago

There are 12 inches in a foot. Which expressions describe how many inches are in 4 feet? Check all that apply.

Mathematics

2 answers:

lutik1710 [3]2 years ago

6 0

Answer:

answer choices?

Step-by-step explanation:

Oliga [24]2 years ago

4 0

There are no answer choices!

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What’s the answer (number 5)

sineoko [7]

80 x 3/10 = 240/10 = 24 times

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3 years ago

Pump a can empty a pool in 20 hours and pump b can empty it in 24 hours. working together, how long

Umnica [9.8K]

I would guess 4 hours in that case

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3 years ago

The position function for a free-falling object is s(t) = -16t^2 + vt +5. A ball is thrown upward from the top of a 400-foot bui

mixer [17]

Answer:

6.21 seconds

Step-by-step explanation:

The position function of a free-falling object is,

$s(t) = -16t^2+v_0t+s_0$

Where,

$s_0$ = initial height of the object,

$v_0$ = initial velocity of the object,

Here,

$s_0=400\text{ feet}$

$v_0=35\text{ feet per sec}$

Hence, the height of the ball after t seconds,

$s(t)=-16t^2+35t+400$

When s(t) = 0,

$\implies -16t^2+35t+400=0$

$t=\frac{-35\pm \sqrt{35^2-4\times -16\times 400}}{2\times -16}$

$t=\frac{-35\pm \sqrt{1225+25600}}{-32}$

$\implies t\approx -4.02\text{ or }t\approx 6.21$

∵ Time cannot be negative,

Hence, after 6.21 seconds the ball will reach the ground.

4 0

3 years ago

The largest butterfly in the world is found Papua New Guinea.the female of the species weights about 9/10 Use a decimal to write

Anarel [89]

Well, 9/10 is the same as 9 10ths, the decimal that represents that is 0.9 because it is also 9 10ths

5 0

3 years ago

Find the unit rate for 50 miles on 2 1/2 gallons

Anarel [89]

Unit rate is miles per 1 gallon
50mi/2 and 1/2 gallon
50mi/2.5 gallon
times 10/10
500mi/25 gallon
20mi/1gallon

answer is 20mi/gal

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3 years ago