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Nutka1998 [239]

2 years ago

11

On a certain day, the temperature changed at a rate of -2O per hour. How long did it take for the change in temperature to be -1

4O?

1 answer:

topjm [15]2 years ago

7 0

Answer:

it took 7 hours

Step-by-step explanation:

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A smart-phone is thrown upwards from the top of a 384-foot building with an initial velocity of 32 feet per

Anna007 [38]

Answer:

When t = 4

Step-by-step explanation:

The phone will hit the ground when h = 0.

$16t^2 + 32t + 384 =0 \\ \\ t^2 + 2t + 24=0 \\ \\ (t+6)(t-4)=0 \\ \\ t=-6, 4$

However, as time cannot be negative, we know the answer is when t = 4.

5 0

2 years ago

Martin is painting the shed shown. The shed is shaped like a cube. He wants to paint the outside walls of the shed using paint t

laila [671]

Answer:

13

Step-by-step explanation:

7 0

3 years ago

Help please. no clue what I'm doing

Ugo [173]

Answer:

Option second!!!!!!!

4 0

3 years ago

When you multiply 2/3 by a fraction less then one how does the product compare to the factor

Vilka [71]

Answer:

The product will always be less than the factor.

Step-by-step explanation:

When you multiply numbers less than 1, you get a smaller factor each time.

6 0

3 years ago

Given the sequence rn defined recursively below, find r3. r1rn=2=−rn−1+n−2

kifflom [539]

Answer:

$r_3=3$

Step-by-step explanation:

Given:

$r_1=2\\r_n=-r_{n-1}+n-2$

We want to find the value of $r_3$ .

$\\r_2=-r_{2-1}+2-2\\r_2=-r_1\\r_2=-2\\\\r_3=-r_{3-1}+3-2\\r_3=-r_{2}+1\\r_3=-(-2)+1\\r_3=2+1\\r_3=3$

7 0

3 years ago