Answer:
40 minutes
Step-by-step explanation:
→ Take the total away from the amount he wants left
150 - 30 = 120
→ Divide this by his rate
120 ÷ 3 = 40 minutes
Answer:
21cm
Step by step:
Scale : 9cm :12m
Therefore 1m = 9/12 cm
28m= 9/12 *28 = <u>21 cm</u>
Answer:
b)−2° C
Step-by-step explanation:
hello! To solve this problem you should remember how are the operations with negative numbers, for this the only thing we must do is make a subtraction between the initial temperature (8° C) and the negative change of temperature (10° C)
Ti= initial temperature =8° C
ΔT= temperature change =10° C
new temperature=Ti-ΔT
new temperature=8° C-10° C=-2° C
in conclusion the answer is -2° C
Y=-1
Move all terms containing x to the left side of the equation.
Subtract 3x from both sides of the equation.
2x-3x=−5
Subtract 3x from 2x
−x=-5
Multiply each term in -x=−5 by −1
Multiply each term in −x=−5 by −1
(-x) ⋅ -1=(-5) ⋅-1
X=(-5) ⋅-1
multiple -5 by -1
X=5
Since x=5 is a vertical line, the slope is undefined.
Undefined
The equation of a perpendicular line to
x=5 must have a slope that is the negative reciprocal of the original slope.
M perpendicular = -1/∞
The negative reciprocal of ∞ is 0
M perpendicular is 0
Since the slope for the perpendicular line is 0 ,the line is perpendicular to the y-axis. The equation of this line is of the form
y=c when c is any real number. The equation of the line at point (-2 ,1)
Y=-1
I hope you understand this