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3 years ago

Solve a" + 14a + 45 = 0 by factoring

Mathematics

1 answer:

pantera1 [17]3 years ago

3 0

Answer:

a = -3

Step-by-step explanation:

-3 + (14 * -3) + 45 = 0

-3 + -42 + 45 = 0

-3 + 3 = 0

So, the answer is -3

Hope this helps! :)

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A village wishes to measure the quantity of water that is piped to a factory during a typical morning. A gauge on the water line

anzhelika [568]

Answer:

570 m³

Step-by-step explanation:

The volume of water is the product of flow rate of water and the time taken. We are to get the volume of water used between 6 am and 9 am, that is for 3 hours (9 - 6).

We are given the flow rate at 6 am and the flow rate at 9 am, but this flow rate changes between 6 am and 9 am. To get the estimate of the water used, Let us assume that it flows at the same flow rate as it was at 6 am throughout, hence:

$V_L= 100 m^3/h * 3h=300\ m^3$

Also, let us assume that it flows at the same flow rate as it was at 9 am throughout, hence:

$V_R= 280 m^3/h * 3h=840\ m^3$

To get the best estimate of the total volume, let us find the average of the two values, hence:

$Volume=\frac{V_L+V_R}{2} =\frac{300+840}{2}=570\ m^3$

3 0

3 years ago

If y = 8 when x<br> 8 when x = 3, find y when x = 45.

Zarrin [17]

Answer:

y = 120

Step-by-step explanation:

y = kx ur finding k

8 = k 3 get k alone by dividing both sides by 3 --> 8/3 = k

k = 8/3

Y = 8/3 45 now your finding Y when x is 45

Y = 120

to make sure do 120 = 8/3 45 should equal the same

4 0

3 years ago

Pls answer this. its easy but for me nah

zlopas [31]

Answer:

1. acute

2. Right

3. maybe acute

4. obtuse

5. acute

6. obtuse

7. straight

8. obtuse

9. acute

10. obtuse

11. acute

12. acute

13. obtuse

14. obtuse

8 0

3 years ago

It took Peter 3 hours to drive to his friend in Connecticut when he was driving with the average speed 54 mph. How much time wil

pishuonlain [190]

Answer: 2.7 hours

Step-by-step explanation:

3 x 54 = 162, 162 is how many miles the drive is. If he is going 60 mph you have to divide 162/60 and you get 2.7 hours

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3 years ago

Read 2 more answers

The tram could cover 400 centimeters in 50 seconds. if the rate of the tram were reduced by one half during the thunderstorm<

ki77a [65]

Reduced by half = 200cm/50 seconds.

20000/50 = 400.

200 x 400 = 80,000cm

6 0

3 years ago