Answer:
4.58
Step-by-step explanation:
21 is not a perfect square, but lies between the perfect squares 16 and 25. Thus, √21 lies between √16 and √25, that is, between 4 and 5. Since 21 is closer to 25 than to 16, √21 is closer to 5 than to 4. A rough estimate of √21 would be 4.7.
√21 done on a calculator comes out to 4.58.
Answer:
All the sides are equal. any number as long as all the sides have the same number.
Step-by-step explanation:
Answer:
BC = 30.73
Here,

so first solve for QD




Now! <u>using Pythagoras theorem,</u>
- BC = 30.73 ( rounded to nearest hundredth )
Answer:
D. -2n - 6 = 9
Step-by-step explanation:
The first step you have to do is the distributive property in the given equation. So, you multiply n and 3 by -2. The resulting equation is -2n - 6 = 9.
10+30=40(total number of students in the class)
take this number and divide by 5
40/5=8 (students)
ANSWER: 8 students signed up for the competition