Answer:
(4x + 3) + (-2x + 4) = 2x + 7
Step-by-step explanation:
(4x + 3) + (-2x + 4) = you then collect like terms
(4x + -2x) + (3 + 4)= like this, and you add what's inside perenthesis
= 2x + (3 + 4). step-by-step
= 2x + 7. then that is how you get =2x+7
The Pythagorean theorem <span />
Answer:
7 inches on the map is 175 miles.
Step-by-step explanation:
2 inches equals 50 miles. Use 50 divided by 2 to find the 1-inch scale which is 1:25 ( one inch to 25 miles)
Answer:
20
Step-by-step explanation:
Knowing that it is a 30-gallon bathtub.
And it fills at a rate of 3 gallons per minute.
But also drains 1.5 gallons per minute.
So this is for the first minute.
3 - 1.5 = 1.5
So there will be 1.5 gallons of water in the tub after the first minute.
Now do,
30 ÷ 1.5 = 20
It will take 20 full minutes for the bathtub to fill up.
Answer:
The number of counties in state A = 56
The number of counties in state B = 58.
Step-by-step explanation:
Let the number of countries in state A = k
So, the number of state in state B = ( k+2)
(as he next consecutive even integer after k is k + 2)
Now, according to the question:
k + ( k+2 ) = 114
or, 2k + 2 = 114
⇒ 2k = 114 -2 = 112
⇒ k = 112/2 = 56
or, k = 56
Hence, the number of counties in state A = k = 56
and the number of counties in state B = k+ 2 = 56 + 2 = 58.
