2 years ago

Please help asap6918

Mathematics

1 answer:

WINSTONCH [101]2 years ago

3 0

Answer:

Step-by-step explanation:

The value of n = 1 , 2 , 3. Find the first 3 term and add them.

3*1 + 3*2 + 3*3 = 3 + 6 + 9

= 18

You might be interested in

If triangle BNV ~ triangle BRG, BR=4x+7 and BG= 18 find the value of x

Bingel [31]

Answer:

x=5

Step-by-step explanation:

5 0

3 years ago

A cookie recipe for 5 dozen cookies calls for 4 cups of flour. How many is flour is needed to make 90 cookies

azamat

6cups of flour will be needed
5*12/4= 15
90/15=6

6 0

4 years ago

How many windows would Carpenter A install in 10 hours?

DerKrebs [107]

Answer:

vdv

Step-by-step explanation:

vfvfvdv

3 0

3 years ago

The heat developed in an electric wire varies jointly as the wires resistance, the time the current flows, & the square of t

never [62]

Answer:

4 ohms

Step-by-step explanation:

The question is "In two minutes a current of 5 amps develops 1,200 heat units in a wire of 8 ohms resistance. What resistance does a similar wire have, which develops 6,000 heat units with a current of 10 amps in 5 minutes?"

Current, I₁ = 5 A

Heat, Q₁ = 1200 units

Resistance, R₁ = 8 ohms

Time, t₁ = 2 min = 120 s

New heat, Q₂ = 6000 units

Current, I₂ = 10 A

New time, t₂ = 5 min = 300 s

We need to find the new resistance.

Heat developed is given by :

$Q=I^2Rt$

$\dfrac{Q_1}{I_1^2R_1t_1}=\dfrac{Q_2}{I_2^2R_2t_2}\\\\R_2=\dfrac{Q_2\times I_1^2R_1t_1}{Q_1I_2^2t_2}\\\\R_2=\dfrac{6000\times 5^2\times 8\times 120}{1200\times 10^2\times 300}\\\\=4\ \Omega$

So, the new resistance is 4 ohms.

5 0

3 years ago

I cant feel my hand helppppppp

suter [353]

Answer: Are you ok?

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers