Answer:
Step-by-step explanation:
f(x)=x²-5x+7
f(2)=2²-5.2+7=4-10+7=11-10=1
f(-1)=(-1)²-5.(-1)+7=1+5+7=13
f(1/3)=(1/3)²-5(1/3)+7=1/9-5/3+7=49/9
∴, f(2)-f(-1)+f(1/3)
=1-13+49/9
=58/9-13
=-59/9
mark be brainlest plss
The prime factorization of 70 is 2*5*7
Further explanation:
First of all let us define prime factorization
Prime factorization consists of all the prime multiples of a number i.e. the factors should also be prime numbers
Given number is 70
The multiples of 70 are
70 = 2*35 => 35 is composite number
70 = 5*14 => 14 is a composite number
70 = 7*10 => 10 is a composite number
70 = 2*5*7 => All factors are prime so
The prime factorization of 70 is 2*5*7
Keywords: Factorization, Prime factors
Learn more about prime factorization at:
#LearnwithBrainly
Answer: 87.9675
Step-by-step explanation:
Formula for z:
, where x= data value corresponding to z, 
= mean, 
= standrad deviation.
Given: =85.3, =4.85, z=0.55
To find : x
Hence, The required data value= 87.9675
Answer:
There are 392 students in the seventh grade.
Step-by-step explanation:
Let us assume that there are x number of students in the seventh grade.
Now, 3/8 of the seventh grade students were taking Advanced math at the beginning of the year, but seven dropped out by the end of the year.
So, after the end of the year there were 
number of students taking advanced math.
So, as per given condition, 
⇒ 
⇒ x = 392
Therefore, there are 392 students in the seventh grade. (Answer)
Solve for A:3 + 5/a = 3/A - 2
3 + 5/a = 3/A - 2 is equivalent to 3/A - 2 = 3 + 5/a:3/A - 2 = 3 + 5/a
Bring 3/A - 2 together using the common denominator A:(3 - 2 A)/A = 3 + 5/a
Multiply both sides by A:3 - 2 A = A (3 + 5/a)
Subtract (3 + 5/a) A + 3 from both sides:A (-5/a - 5) = -3
Divide both sides by -5/a - 5:Answer: A = 3/(5 + 5/a)
