It is similar to an expresion just break it down x*2 is 5 nothing that is a whole number will complete this equation so the answer is 2.5
Answer:
The answer would be (-3,-1/2)
Step-by-step explanation:
Answer:1 is called the first term of the proportion, 2 is the second term, 5 is the third, and 10, the fourth. We say that 5 corresponds to 1, and 10 corresponds to 2.
Step-by-step explanation:
1 is called the first term of the proportion, 2 is the second term, 5 is the third, and 10, the fourth. We say that 5 corresponds to 1, and 10 corresponds to 2.
Answer:
X= 5, -9
Step-by-step explanation:
(X+2)² =49
Expand the bracket,
(X+2) (X+2)= 49
Apply the distributive property;
X(X+2) +2 (X+2) =49
X²+2X+2X+4=49
X²+4X+4=49
Move 49 to the left side of the equation;
X²+4X+4-49=0
X²+4X-45=0
Apply Factorisation method;
Consider the form
a²+bx+c=0
Find two numbers whose sum is equal to b and whose product is equal to c.
Comparing with our equation;
B =4 and C =45
We can use 9 and -5, this is because ;
9+(-5)=4 and 9*(-5)= 45.
Replace X +4X-45=0 with (X-5) (X+9)=0
Therefore;
X-5=0
X+9=0
Moving to the left side of the equation;
Therefore X= 5 and -9
Answer:
y intercept = -0.93
x intercept = -0.42
Step-by-step explanation:
To get x intercept, substitute y for 0 and solve for x.
To get y intercept, substitute x for 0 and solve for y.
X intercept:
9.3x + 4.2y + 3.9 = 0
9.3x + 4.2(0) + 3.9 = 0
9.3x + 3.9 = 0
Subtract 3.9 to get it on the other side
9.3x + 3.9 - 3.9 = 0 - 3.9
9.3x = -3.9
Divide 9.3 to get x by itself
(9.3x) / (9.3) = (-3.9) / (3.9)
x = -0.419355
Since there are some extra numbers, I will round it to the nearest hundredth to make it easier
-0.419355 = -0.42
Y intercept:
9.3x + 4.2y + 3.9 = 0
9.3(0) + 4.2y + 3.9 = 0
4.2y + 3.9 = 0
Subtract 3.9 to get it on the other side
4.2y + 3.9 - 3.9 = 0 - 3.9
4.2y = -3.9
Divide 4.2 to get y by itself
(4.2x) / (4.2) = (-3.9) / (4.2)
x = -0.928571
Round answer to nearest hundredths
-0.928571 = -0.93
Notes:
If your answer is an extended decimal number, round it to the nearest hundredths to make it easier