(6 × 10^4 + 3 × 10^4)(3 × 10^2) What is the value of the expression in scientific notation?

Mathematics

1 answer:

LekaFEV [45]3 years ago

6 0

Answer:

2.7x10^7 or 2.70000000 I think

Step-by-step explanation:

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PLEASE HELP , TRYING TO BE ON HONOR ROLL !

borishaifa [10]

Option A

The solution is $(0, \frac{-1}{4})$

Solution:

Given system of equations are:

3x + 6y = 1 ------ eqn 1

x - 4y = 1 ------ eqn 2

We have to find solution to system of equations

We can use substitution method

From eqn 2,

x = 1 + 4y -------- eqn 3

Substitute eqn 3 in eqn 1

3(1 + 4y) + 6y = 1

3 + 12y + 6y = 1

18y = 1 - 3

18y = -2

Divide both sides by 18

$y = \frac{-2}{18}\\\\y = \frac{-1}{4}$

Substitute the above value of y in eqn 3

$x = 1 + 4 \times \frac{-1}{4}\\\\x = 1-1\\\\x = 0$

Thus solution is $(0, \frac{-1}{4})$

8 0

2 years ago

On a bike ride, calvin starts at home and goes up a long hill for 30 minutes at just 6 mph. at the top, he turns around and ride

omeli [17]

Answer:

9 mph

Step-by-step explanation:

Calvin's first leg of the trip took 0.5 hr (30 minutes) at 6 mph. That means he travelled (0.5hr x 6 mph =) 3 miles. He travelled 3 miles on the return trip, by definition (same path home). At 18 mph, 3 miles would take (3 miles/18 mph =) 0.1667 hours. That makes a total of 6 miles and (0.5 + 0.1667=) 0.6667 hours.

(6 miles)/(0.6667 hours) = 9 mph is Calvin's average speed for the round trip.

3 0

9 months ago

Read 2 more answers

Is 104 and 12 hundreths greater than 104 and 2 hundreths

Scilla [17]

Yes, 104.12 is greater than 104.02.

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2 years ago

Abigail withdrew $15 from checking account. Write an integer to represent the situation.

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