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kramer
2 years ago
6

Margo bought 7 pens from a bookstore. Some of the pens cost $3 each, and the rest cost $4 each. If she paid a total of $23 for t

he pens, how many of the $3 pens did she buy? Look at picture above for answer choices.

Mathematics
1 answer:
e-lub [12.9K]2 years ago
8 0

Answer: 5 Pens!

Step-by-step explanation: 5 Pens Would Be The Answer.

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Using the order of operations, what is the last calculation that should be done to evaluate 4(8 − 6)52 − 6 ÷ (−3)?
nadya68 [22]

Answer & Step-by-step explanation:

4(8 - 6)52 - 6 ÷ (-3)

First, subtract 6 from 8

4(2)52 - 6 ÷ (-3)

4(2)(52) - 6 ÷ (-3)

Multiply 2 by 52

416 - 6 ÷ (-3)

Divide -6 by -3.

416 + 2

Add 2 to 416

418

So, your evaluated answer would be 418.

6 1
2 years ago
Read 3 more answers
A class in advanced physics is composed of 10 juniors, 30 seniors, and 10 graduate students. the final grades show that 3 of the
const2013 [10]

Solution: We are given:

Total students = 10 + 30 + 10 =50

Number of students who received A grade = 3 + 10 + 5 = 18

Number of senior student's who received A grade is = 10

Let A be the event that the student is senior and B be the event that he or she earned an A. Then,

P(A \cap B)=\frac{10}{50}

P(B) = \frac{18}{50}

Now the probability a student chosen at random from this class and is found to have earned an A, the probability that he or she is a senior is:

P(A|B) = \frac{P(A \cap B}{P(B)}

                 =\frac{\frac{10}{50} }{\frac{18}{50} }

                 =\frac{10}{18}=\frac{5}{9} =0.556


5 0
2 years ago
• Texas: 2.69 x 10 5 square miles • Rhode Island: 1.21 x 10 3 square miles Determine the difference, in square miles, between th
BabaBlast [244]

Answer:

The difference between the area of Texas and Rhode Island in square miles and scientific notation = (2.68 × 10⁵) square miles.

Step-by-step explanation:

Area of Texas = (2.69 × 10⁵) square miles = 269000 square miles

Area of Rhode Island = (1.21 × 10³) square miles = 1210 square miles

Difference between the Area of the Texas and Rhode Island = 269000 - 1210 = 267,790 square miles = (2.68 × 10⁵) square miles.

The difference between the area of Texas and Rhode Island in square miles and scientific notation = (2.68 × 10⁵) square miles.

Hope this Helps!!!

8 0
2 years ago
Suppose there are 500 units of energy available at the base of a pyramid of energy. How many units of that energy will the first
Ede4ka [16]

Answer:

With every other lever 10% of the energy with be transferred. In this case:  Primary Producers (500) 1) First- level consumer. (50)  2) Second-level consumer. (5) 3) Third- level consumer. (0.5) Remember the formula is:(Primary Producer) __units X 10%= __500 units X 10%= 50

50 units of energy will be the first level consumers stored.  

5 units of energy will be the second level consumers stored.

Step-by-step explanation:

3 0
2 years ago
Solve 2sinx + √2 = 0
stepladder [879]
Attached you will see the solution using the trig plane and general solutions.

3 0
2 years ago
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