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lisabon 2012 [21]
3 years ago
7

1. What are the roots of this equation? x2 + 4x + 8 = 0 A. –1 + i B. –4 +1 C. –2 + 21 D. -1 + 4​

Mathematics
1 answer:
Fynjy0 [20]3 years ago
4 0

Answer:

5676656423

Step-by-step explanation:

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I need help..... please answer ASAP if you know how to solve this
kvv77 [185]
For part A, The answer is that the car gets better gas mileage. We can see it from the graph that the number of gallons used is on the X axis, and the distance traveled using those number of gallons is on the Y axis. The easiest way to compare would be to look at the 1 gallon of gas. You can see that you can travel 25 miles on 1 gallon of gas. The truck on the other hand will get you 18 miles per gallon. Imagine putting 1 in for X, the Y value would be 18 if you did this. The graph just shows us a visual way of saying the same thing. To determine how much farther the car with a girl on 8 gallons of gas, you would just multiply 8 by 25 for the number of miles traveled by the car. You would multiply 8 by 18 to find the number of miles traveled for the truck. The answers are 200 miles for the car and 144 miles for the truck. 200-144=56 miles farther for the car.
6 0
3 years ago
An aquarium tank that measures 2.4 m high, 6 m long, and 1.5 m wide is completely filled with water. The density of water is 1,0
notsponge [240]

Answer:

Step-by-step explanation:

4 0
2 years ago
A computer store buys a computer system at a cost of $370.80. Then selling price was first at $618, but then the store advertise
Charra [1.4K]

Answer:

The answer is 494.40$

Step-by-step explanation:

618*80=49440

49440/100=494.40

3 0
3 years ago
Need help again asap please! Find the sum of the first 30 terms of the sequence below an=3n+2
hoa [83]

S_{30} = 1455

generate a few terms of the sequence using a_{n} = 3n + 2

a_{1} = ( 3 × 1) + 2 = 5

a_{2} = (3 × 2) + 2 = 8

a_{3} = (3 × 3 ) + 2 = 11

a_{4} = (3 × 4 ) + 2 = 14

a_{5} = ( 3 × 5 ) + 2 = 17

the terms are 5, 8, 11, 14, 17

these are the terms of an arithmetic sequence

sum to n terms is calculated using S_{n} = \frac{n}{2} [ 2a + (n-1)d]

where a is the first term and d the common difference

d = 8 - 5 = 11 - 8 = 14 - 11 = 3 and a_{1} = 5

S_{30} = \frac{30}{2} [( 2 × 5) + (29 × 3) ]

= 15( 10 + 87) = 15 × 97 = 1455



3 0
3 years ago
Read 2 more answers
Kyle ran 5.4 miles on each of four days this week. He ran 7 miles on the fifth day. How many miles did Kyle run this week?
77julia77 [94]

That would be

4*54 + 70  = 286 miles  Answer

5 0
3 years ago
Read 2 more answers
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