Answer:
x = -4
Step-by-step explanation:
5(4x+9)=-50+15
20x+45=-50+15
20x+45=-35
-45 -45
20x=-80
/20 /20
x=-4
Answer:
See below
Step-by-step explanation:
Lets assume weight is input and time is output
The function based on the input and output values is close to linear and it is decreasing (graph is attached)
<u>Answers are</u>
- a) correlation is negative as time decreases with increase in weight.
- b) Numeric value is obtained -0.99 by using the formula attached as picture. It is 'very strong negative relationship'
- c) Yes. Because weigh increase causes time to decrease
I will translate
"five more than" 5+ "twice a number" 2n
5+2n is the expression
Answer:
country b has 3,925 more people
Step-by-step explanation:
Answer:
B. One solution
Step-by-step explanation:
Here are a system of how two equations can be classified ;
• If the gradients are the same but the y-intercepts are different, the system has no solution.
• If the gradients are different, the system has one solution.
• If the gradients are the same and the y-intercepts are the same, the system has infinitely many solutions.
Y= (x/4) + 3
When x =1
y= 13/4
When x=3
y= 15/4
Gradient of Y= (x/4) + 3
=∆y/∆x
= (15/4 - 13/4)/ ( 3-1)
=( 2/4)÷ 2
=( 2/4 ) × (1/2)
= 1/4
-4x + y = 4
When x= 1
Y= 8
When x=3
Y=16
Gradient of -4x + y = 4
=∆y/∆x
= (16 - 8)/(3-1)= 8/2 = 4
Since the gradients are different then the system has one solution.
