First car is x
second car is y
25x+30y=1550
x+y=55
Multiply the second equation by -25 for elimination method to cancel out x
-25x-25y=-1375
Add the two equations
5y=175
y=35
Plug this value into the second equation
x+35=55
x=20

Final answers:
First car=20 gallons
Second car=35 gallons

6 0

3 years ago

ONLY ANSWER IF YOU KNOW, SHOW WORK

yulyashka [42]

Answer:

hello,

Step-by-step explanation:

$cos(3\theta)+cos(4\theta)\\\\=2*cos(\dfrac{4\theta+3\theta}{2} )*cos(\dfrac{4\theta-3\theta}{2} )\\\\\boxed{=2*cos(\dfrac{7\theta}{2} )*cos(\dfrac{\theta}{2} )}$

6 0

3 years ago

Help i will give brainliest

Gre4nikov [31]

The answer is the last one (-5x7)!

4 0

3 years ago

Read 2 more answers

Answer each question and show your work.

Sonja [21]

Answer:

See below

Step-by-step explanation:

Each edge of the greater cube has:

1 : 1/6 = 6 times the small cube

Number of small cubes:

6³ = 216 small cubes

The volume of the bigger cube is 1 in³

The volume of each small cube is:

1 : 216 =
1/216 in³

8 0

3 years ago

Pls help me with this mathematics and I will mark you as brainliest pls asaap pls​

Pls help me with this mathematics and I will mark you as brainliest pls asaap pls