Each person shakes 7 hands, but once you count the handshake between A and B, you don't need to count the handshake between B and A. There are a total of 8*7/2 = 28 handshakes.

7 0

4 years ago

Read 2 more answers

A family has two cars. The first car has a fuel efficiency of 30 miles per gallon of gas and the second has a fuel efficiency of

lys-0071 [83]

Answer:

Car 1 consumes 30 gallons of gas.

Car 2 consumes 20 gallons of gas.

Step-by-step explanation:

6 0

3 years ago

The question is on the picture

insens350 [35]

The answer is 60,480 cubic centimeters

5 0

3 years ago

7. If A = 2x + 3 and B = x^2 - 5x + 1, what is the value of A-5B?

taurus [48]

Answer:

$\huge \boxed{ \boxed{ \tt - 5 {x}^{2} + 27 x- 2}}$

Step-by-step explanation:

<h3>to understand this</h3><h3>you need to know about:</h3>

algebra
PEMDAS

<h3>given:</h3>

A=2x+3
B=x²-5x+1

A-5B

<h3>let's solve:</h3>

$step - 1 : define$

A-5B=2x+3-5(x²-5x+1)

$step - 2 : solve$

distribute -5 to the parentheses:2x+3-5x²+25x-5
rewrite:-5x²+2x+25x-5+3
combine like terms:-5x²+27x-2

and

we are done

7 0

3 years ago