Answer:
5in
Step-by-step explanation:
The formula for area is A=bh or Area = Base × Height
or you can write it as A=wh which is Width × Height
so plug in the numbers you already know
(do not worry about units right now)
45=b(9)
Now you have to get the variable b by itself
divide both sides by 9 to get b by itself
45(÷9)=b(9)(÷9)
the 9 next to the b gets canceled out
45÷9= 5
The answer is 5 inches
Always remember that the actual area's units are squared while the base and height are just the unit not squared
45in²=area
5in and 9in= base and height
Combinations are:
B B ( both boys )
B G ( first boy, than girl )
G B ( first girl, than boy )
G G ( both girls )
P ( B B ) = 1 / 4 = 0.25
Answer: B ) 0.25
PH can be calculated using the following equation
pH = -log [H₃O⁺]
for apple juice the hydronium /hydrogen ion concentration is 0.0003
pH = -log (0.0003)
pH = 3.5
correct answer is C
For ammonia
pH = -log (3.1 x 10⁻⁹)
pH = 8.5
answer should be 8.5
Take 145-115 because for this your supposed to add all numbers inside to get exterior angle so you would do 145-115=30
R would be 30
R=30
Hope this helps
