Answer:
2(x+4)-1=2x+7 is true for everything
Step-by-step explanation:
2(x+4)-1
2(x+4)
=2x+2*4
=2x+8
=2x+8-1
=2x+7
2x+7=2x+7
2x=2x
2x-2x=2x-2x
0=0
true for all x
Answer:
Correct option is : 1) It has a slope of 7 and a y-intercept of -2.
Step-by-step explanation:
The given function is :
.....1
The general form of equation of a linear function is given by :
.....2
where, y is the dependent variable, x is the independent variable, m is the slope of the function and c is the y-intercept.
On comparing equations 1 and 2, we get:
m = 7,c = -2
Thus, we can conclude that : Slope of equation is 7 and y-intercept is -2.
Thus, only option 1 satisfies the given solution.
Step-by-step explanation:
= 4/5 × 8 /9
We will cross multiply
= 40 × 36 / 45
= 1440 / 45
= 32
Answer:
Step-by-step explanation:
1-73
18 inches = 1.5 feet
Multiply 2 on both sides;
36 inches = 3 feet
As for 72 inches, multiply each side by 4
18 inches = 1.5 feet
72 inches = 6 feet
As for 144 inches, divide both sides by 18
1 inch is approximately 0.083
Multiply both sides by 144
144 inches = 12 feet
1-74
a. The scale goes by 20. 0->20->40, etc.
b. The scale goes by 15. 0->15->30, etc.
c. The scale goes by 25. 0->25->50, etc.
d. The scale goes by 50. 0->50->100, etc.
First you would do parenthesis according to the PEMDAS(Parenthesis, Exponents, Multiply, Divide, Add, Subtract) Rule
4 -2(-5a -10) = 30
4 + 10a + 20 = 30
Now you need to add 4 and 20 because they are on the same side
24 + 10a = 30
Now subtract 24 on both sides
24 + 10a = 30
-24. -24
10a = 6
Last divide 10 from both sides
10a/10. = 6/10
a= 6/10
Last simplify (optional but recommended)
a = 3/5 or 0.6
Hope this helped :)
A = 0.6
