Answer:
c
Step-by-step explanation:
quadratic formula: -b±√b²-4ac/ 2a
a= -10
b= 12
c= -9
-12±√144- 4(-10)(-9)/ 2(-10)
-12±√144- 360/ -20
-12±√-216/-20
6±3i√6/ 10
simplify: 3/5± 3i√6/10
Answer:
n = 24
Step-by-step explanation:
(n + 18) and 2n are "complementary angles:" they add up to 90°.
Thus, n + 18 + 2n = 90. Combining the n terms results in 3n + 18 = 90.
Then 3n = 72. Dividing both sides by 3 results in n = 24.
n is 24, so n + 18 is 42 and 2n is 48. Note that 42 and 48 add up to 90.
GCF of 25, 35 and 45 is 5
Step-by-step explanation:
The greatest factor that divides all given numbers is called the greatest common factor.
In case of 25, 35 and 45, the greatest number that will divide all three will be the GCF
For that, we have to find the factors of all numbers
By observing the factors we can say that the greatest common factor is 5
Hence,
GCF of 25, 35 and 45 is 5
Keywords: GCF, Factors
Learn more about GCF at:
#LearnwithBrainly
Answer:
D. 2:20
Step-by-step explanation:
6 : 35 - 4 : 15 = 2 : 20
1.) Isolate a variable.
2.) Subsitube
3.) then solve for other varible.
