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slamgirl [31]
2 years ago
7

Jenn bought 12 pens for $2 each and 6 pads of paper for $3 each. She was in a hurry and forgot to include the operations. She wr

ote 12 2 6 3 Place parentheses and operation signs to write an expression for the total cost of Jenn's purchase. How much did she spend?​
Mathematics
2 answers:
Margaret [11]2 years ago
6 0

(12 x 3) + (6 x 3) = 54

Step-by-step explanation:

First of all, the 12 penda should be multiplied by the amount each other them cost, and same goes with the pads of paper. After you multiplied both, you add them and there you have your answer.

Nadya [2.5K]2 years ago
5 0
(12 • 2) + (6 • 3)= 24+18= 42

In total she spent $42

Hope this helps!!
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Suppose the cost of publishing x books is C(x) = 10000 + 25<img src="https://tex.z-dn.net/?f=%5Csqrt%7Bx%7D" id="TexFormula1" ti
dusya [7]

Answer:

\frac{dC}{dQ} \approx 1.25, C(101)-C(100) = 1.247, \delta = 0.24\,\%

Step-by-step explanation:

The marginal cost function is:

\frac{dC}{dQ} = 12.5\cdot x^{-\frac{1}{2} }

The marginal cost for 100 books is:

\frac{dC}{dQ} \approx 1.25

The difference is:

C(101)-C(100) = 25\cdot (101^{\frac{1}{2} }-100^{\frac{1}{2} })

C(101)-C(100) = 1.247

The relative error is:

\delta = \frac{|1.25-1.247|}{1.25}\times 100\,\%

\delta = 0.24\,\%

6 0
3 years ago
2. The equation h(t)=−16t2+19t+110 gives the height of a rock, in feet, t seconds after it is thrown from a cliff.
Paul [167]
For this case we have an equation of the form:
 h (t) = - (1/2) * a * t ^ 2 + vo * t + h0
 Where,
 vo: initial speed
 a: acceleration:
 h0: initial height.
 We have the following equation:
 h (t) = - 16t2 + 19t + 110
 Therefore, the initial velocity is:
 vo = 19 feet / s
 Answer:
 
The initial velocity when the rock is thrown:
 
vo = 19 feet / s
8 0
2 years ago
Determine whether the point is on the graph of the equation 2x+3y=8.<br> (1,2)
geniusboy [140]

The point (1,2) is on the graph of the equation.

Explanation:

The equation is 2x+3y=8

We need to determine the point (1,2) is on the graph.

To determine the point (1,2) is on the graph, we need to substitute the point in the equation and find whether the LHS is equal to RHS.

Thus, substituting the point (1,2) in the equation 2x+3y=8, we get,

2(1)+3(2)=8

Multiplying the terms within the bracket, we have,

2+6=8

Adding the LHS, we have,

8=8

Thus, both sides of the equation are equal.

Hence, the point (1,2) is on the graph of the equation 2x+3y=8

3 0
3 years ago
A common factor of 2x+10 and 4x+8
OverLord2011 [107]

Answer:

2

Step-by-step explanation:

2(x+5) this is the most you can simplify it

2(2x+4) but you can factor out another 2 so it is 4(x+2)

5 0
3 years ago
Determine if the following scenario is inductive or deductive reasoning:
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