90 because u said that only 90 tickets were sold at gate c
(18.6 + 9.4) x 1/2^2= 7 hope it helps!
- The result of Ben's estimation strategy is 7 grams.
- The exact amount of nickel is 8.05 grams.
<u>Step-by-step explanation:</u>
First off all, if we have 1 gram of a substance that has 0.51 gram of copper and 0.26 gram of zinc, the remainder will be:
1 gram - ( 0.51 + 0.26 ) = 1 gram - 0.77 = 0.23 grams.
Hence we have 0.23 gram of nickel.
But the estimation of Ben implies that 1 grams of the substance has 0.2 gram of nickel.
Multiplying the grams of the substance by the gram of nickel to obtain the grams of nickel in 35 grams of the substances.
35 0.2 = 7 grams.
Hence 35 grams of the substance has 7 grams of nickel.
But we know that in 1 gram of the substance are not 0.2 grams of nickel but 0.23 as calculated. So by multiplying the grams of the substance by 0.23 and thereby finding the actual grams of nickel in it:
35 0.23 = 8.05 grams.
Hence 35 grams of the substance has 8.05 grams of nickel.
Answer:
B) 20
Step-by-step explanation:
Each number in the equation needs to be a whole number, since you can't have 2.5 marbles or something like that.
2/5 of 16 is 6.4
2/5 of 20 is 8
2/5 of 21 is 8.4
2/5 of 26 is 10.4
Even though 20 is the only one that works, if you wanted to be sure it's right, just divide by three after subtracting 8 (the three remaining marbles.)
20-8=12
12÷3=4
The three remaining numbers would be equal and the amount of yellow numbers is a whole number. 20 is correct
<u>Please</u><u> give</u><u> brainliest</u><u> if</u><u> I</u><u> helped</u><u>!</u><u> </u><u>:</u><u>)</u>
Answer:
Between all these pairs of numbers,a rational number can be found in all the 3 pairs
Step-by-step explanation:
PAIR1: -10 and -9
Rational numbers are: -10.5,-10.6,-10.1,etc (there are way more)
PAIR2: 5.91 and 5.92
Rational numbers:- 5.915,5.916,etc(there are way more)
PAIR3:2/3 and 4/5
LCM= 15
2/3=10/15
4/5=12/15 between these two (10/15 & 12/15)
Rational numbers: 11/15, 11.5/15(because it's result would be a recurring/repeating decimal),etc