Answer:
y=2.98x
$2.98
Step-by-step explanation:
$20.86/7 = $2.98
$5.96/2 = $2.98
When the graphs intersect eachother
Answer:
Decrease number by 2,155.44% of its value.
Percentage decrease = 2,155.44% × 18.5
Answer:40
Step-by-step explanation:This is a variation question
From the statement. Let the mental age be M and the chronological age be C, then
IQ ∝M ∝1/C
⇒ IQ ∝ M/C
Introducing the proportionality constant
IQ = KM/ C
Given : M = 15, C = 30 , 1Q = 20
Substitute the given values into the equation
i.e 120 = K x 15/ 30
120 = k/2
therefore k = 240
substitute k = 240 into the equation, we have
IQ = 240M/C
To find C when IQ is 120 and M is 20, we will substitute into the generated formula
i.e 120 = 240 x 20 / c
120c = 480
C = 480/120
C = 40
Therefore , the chronological age of a person with mental age of 20 and IQ of 120 is 40
Answer:
Answer is 17
Step-by-step explanation:
-2 2/5 + 3 1/4
-12/5 +13/4
multiply both side with 20 we get
20* -12/5 +13/4 *20
-48 + 65
17
