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rewona [7]
2 years ago
12

Amanda was asked by her math teacher to solve an inequality on the board. Amanda put the following on the board: 3x - 2(x - 1) ≤

2x - 10 3x - 2x + 2 ≤ 2x - 10 1x ≤ 2x - 12 -1x ≤ -12 x ≤ 12 The other students were asked to do an error analysis on Amanda's work. What did the other students say? Did Amanda make a mistake, and if so what did she do wrong?
Mathematics
1 answer:
Bogdan [553]2 years ago
8 0

Answer:

Yes, she did not reverse the inequality sign when the last step was to multiply or divide by a negative number,

Step-by-step explanation:

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Ayne evaluated an expression that has a value of StartFraction 1 Over 729 EndFraction. Which expression could Jayne have evaluat
Alex17521 [72]

Answer:

9 Superscript negative 3

Step-by-step explanation:

{9^{-3} = \frac{1}{9^{3}} =\frac{1}{729}}\\

3 0
2 years ago
A log splitter uses a pump with hydraulic oil to push a piston, attached to which is a chisel. The pump can generate a pressure
faust18 [17]

we are given

The pump can generate a pressure of 2.3x107 pa

so,

p=2.3*10^7

a radius of 0.041 m

so,

r=0.041m

a stroke lasting 29 s, the piston moves 0.57 m

so,

h=0.57m

t=29s

Firstly, we will find area

A=\pi r^2

A=\pi (0.041)^2

A=0.00528

now, we can use power formula

P=\frac{W}{t}

F=pA

W=Fh

so, W=pAh

we can plug it

P=\frac{p*A*h}{t}

now, we can plug values

P=\frac{2.3*10^7*0.00528*0.57}{29}

now, we can simplify it

Power=2386.92414 watt.........Answer

6 0
2 years ago
4. Find the value of x.
jok3333 [9.3K]

Answer: I believe its B

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
Which is a characteristic of the line that passes through the points (6, 10) and (12, 7)? The slope is mc015-1.jpg. The slope is
lbvjy [14]
Answer:
slope of the line is -0.5
y-intercept is 13

Explanation:
The general formula of the linear equation is:
y = mx + c 
where m is the slope and c is the y-intercept

1- getting the slope:
We are given the two points:
(6,10) representing (x1 , y1)
(12,7) representing (x2 , y2)
The slope of the line will be calculated as follows:
m = (y2-y1) / (x2-x1) = (7-10) / (12-6) = -3/6 = -0.5
The equation of the line now becomes:
y = -0.5x + c

2- getting the value of the y-intercept:
To get the value of the y-intercept (c), we will use any of the given points, substitute in the equation of the line and solve for c. I will use the point (6,10) as follows:
y = -0.5x + c
10 = -0.5(6) + c
10 = -3 + c
c = 13

Based on the above, the equation of the line would be:
y = -0.5x + 13

Hope this helps :)
8 0
2 years ago
Read 2 more answers
Lim x tends to 0 sinax/tanbx
Kipish [7]
Express tan in terms of sin and cos 

=  sin ax cos bx  / sin bx

Now I'm stuck!  sorry

For what its worth Ive drawn the graph and the answer is a/b
8 0
2 years ago
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