X + 70 = 90
x = 90 - 70
x = 20 <== u can add 20 to 70 to get 90
Answer:
Step-by-step explanation:
x² + 6x + 1 = 0
a = 1 , b = 6 , c = 1
A greatest common factor is the largest number that goes into two or more numbers (in this case two). To find the GCF of two numbers, we have to find the prime factorization (how to express a number as a product of prime numbers) and then see which numbers are common in both of the prime factorizations.
11. The prime factorization of 12 is 3 * 2 * 2. The prime factorization of 18 is 3 * 3 * 2. Looking at the prime factorizations, we can see that both of them have 3 and 2. That means that the GCF is 3 * 2 which is 6.
12. The prime factorization of 48 is 2 * 2 * 2 * 2 * 3. The prime factorization of 80 is 2 * 2 * 2 * 2 * 5. We see that the numbers shared are 2, 2, 2, and 2. That means that the GCF is 2 * 2 * 2 * 2 or 16.
Answer:
Step-by-step explanation:
We'll substitute y into the equation:
Switch sides:
Add 2 to both sides
Divide both sides by -3:
Therefore, the value of x/solution is -3
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Answer:
The answer to your question is CD = 4
Step-by-step explanation:
Data
AD = 8
BD = 2
CD = ?
Process
Use proportions to solve this problem. Compare triangle ACD and triangle CDB.
Large triangle CD/AD
Small triangle BD/CD
Equal both proportions
CD/BD = AD/CD
-Solve for CD
CD² = AD x BD
-Substitution
CD² = 8 x 2
-Simplification
CD² = 16
-Result
CD = 4
