180 - (65 + 38) = 77
a) It must measure exactly 77°
Answer:
7 people
Step-by-step explanation:
(21 cookies)/(3 cookies/person) = 7 person
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If you're really challenged figuring this out, you can count out 21 of some object—such as pennies, scraps of paper, or even cookies—and deal them into piles of 3 each. Then count the piles. Working with actual physical objects can often give you mathematical insight not obtainable any other way.
Each pile subtracts 3 from the original amount. We use the arithmetic operation "division" to simplify repeated subtraction.
Knowing number facts such as 3×7 = 21 is very helpful to solving problems of this nature.
N divided by (I don’t have the symbol on my phone) 4
Answer:
The values of x = y = z = 1
Step-by-step explanation:
Given three linear equation as ,
x + 2y + z = 4 .......a
4y - 3z = 1 .......b
y + 5z = 6 ........c
Now solve eq a and b first
4y - 3z = 1 × 5
y + 5z = 6 × 3
Or, 20y - 15z = 5
3 y + 15z = 18
so ,(20y - 15) + (3y +15 ) = 5 +18
or, 23 y = 23
∴ y = 1
Now put this y value in eq c
so , 1 + 5z = 6 ,
Or, 5z = 6-1 =5
∴ z = 1
Again put this y and z value in eq a
so, x + 2(1) + (1) = 4
Or, x = 4 -3
∴ x = 1
Hence from the above solutions , the value of x = y =z = 1 Answer
Chad did 4/5 as a percent is 80% so 80% is larger than 78% so the answer is Chad did the better average