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REY [17]
4 years ago
8

1. Which is an example of an algebraic expression?

Mathematics
2 answers:
SIZIF [17.4K]4 years ago
7 0
1) 3-a because it has a variable

2) 5 + z because more than mean +

3) 4 times the sum of 21 and a number because it shows the bracket 
emmainna [20.7K]4 years ago
6 0
The answers are --> 

1.) 3 -a. An algebraic expression needs have a variable in it. In this case the variable is "a". So the answer is --> 3-a

2.) z+5. 5 more that z means 5 added to z. So, the answer is --> z+5

3.) 4 times the sum of 21 and a number n. In an algebraic expression, the brackets takes the highest order of preference. So, the answer is --> <span>4 times the sum of 21 and a number n
</span>  
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Answer:

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Step-by-step explanation:

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2 years ago
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6 0
3 years ago
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bulgar [2K]

Answer:

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Step-by-step explanation:

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The circumference formula of a circle is C = 2πr, where r is the radius and C is the circumference. We are solving for r. We know that C = 90, and we can use 3.14 for π. When we plug these values in, we get 90 = 2 * 3.14 * r. When we simplify the right side, we get 90 = 6.28 r, and when we solve for r, we get r≈14. Hope this helps!

7 0
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