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rodikova [14]
3 years ago
13

Which information is necessary to solve this problem?

Mathematics
1 answer:
prohojiy [21]3 years ago
3 0
That would be  400 / 28 =  14.29 gallons to nearest hundredth
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Consider the equation
muminat

Answer:

A. a=10\\ \\b\neq -8

B. a=10\\ \\b= -8

Step-by-step explanation:

Consider the equation

2(5x-4) = ax + b

A. This equation has no solutions when the coefficients at x are the same and the free coefficients are not the same.

First, use distributive property:

2(5x-4)=2\cdot 5x-2\cdot 4=10x-8

So, the equation is

10x-8=ax+b

This equation has no solutions when

a=10\\ \\b\neq -8

B. The equation has infinitely many solutions when the coefficients at x are the same and the free coefficients are the same too.

So, the equation

10x-8=ax+b

has infinitely many solutions when

a=10\\ \\b= -8

In other cases, the equation has a unique solution

5 0
3 years ago
Three brothers have ages that are consecutive even integers the product of the first & third boys ages is 20 more than twice
Agata [3.3K]
Let's say X is the first brother's age
x+2 is second brother, and x+4 is the third brother
Since the product of the first and third boy x(x+4) is 20 more than twice (20+x(x+2), our equation is x(x+4)=20+2(x+2)
Simplify from there and see what you get.
5 0
3 years ago
A train leaves at 15.42 and arrives at its destination at 16.56.
Tasya [4]

Answer:

90/1.5=60 mph

Step-by-step explanation:

I assume that the train is traveling at constant speed.

Between 12:45 pm and 2:15 pm the train has traveled 180-90=90 miles. So 90 miles in 1.5 hours which means that its speed is 90/1.5=60 mph

5 0
3 years ago
Read 2 more answers
What is the sum of 27 +48
soldi70 [24.7K]
The correct solution is 75. 
4 0
3 years ago
Read 2 more answers
What is the surface area?<br> 10 cm<br> 8 cm<br> 10 cm<br> 12 cm<br> 10 cm<br> square centimeters
Alinara [238K]

Step-by-step explanation:

surface area = (2*0.5*12*8) + (2*10*10) + (12*10)

= 96 + 200 + 120

= 416 cm^2

6 0
3 years ago
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