Answer:
b=2
Step-by-step explanation:
9x + 12y = 21
6x + 8y = 7b
To have an infinite number of solutions, the two equations must be equal
Take the first equation and divide by 3, since it is a factor of all the terms
9x/3 + 12y/3 = 21/3
3x+4y = 7
Then multiply by 2 to get the x term equal
2*3x + 2*4y = 2*7
6x +8y = 7*2
Comparing this to the second equation
6x + 8y = 7b
b must equal 2
Answer:
Step-by-step explanation:
in quadrant 1 cos and sec are positive.
cos(θ)=√(1-sin²θ)=√(1-(12/13)²)=√((169-144)/13²)=5/13
secθ=13/5
The first four terms of the sequence that follows the rule is 2, -1, 5 and -7
<h3>What is an
equation? </h3>
An equation is an expression that shows the relationship between two or more numbers and variables. An independent variable is a variable that does not depend on other variables while a dependent variable is a variable that depends on other variables.
A sequence of numbers follows the rule: multiply the previous number by -2 and add 3. Let a represent the third term, hence if the 4th term is -7:
-7 = -2a + 3
a = 5
Let b represent the second term, hence:
5 = -2b + 3
b = -1
Let c represent the first term, hence:
-1 = -2c + 3
c = 2
The first four terms of the sequence that follows the rule is 2, -1, 5 and -7
Find out more on equation at: brainly.com/question/2972832
#SPJ1
Answer:
The flow per-minute is 12 gallons every minute
Step-by-step explanation:
x-y
1-12
2-24
3-36