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sineoko [7]
3 years ago
6

Ryan spent $15 on a magazine and some notepads. If the magazine cost $5 and each notepad cost $2, then how many notepads did he

buy?
Mathematics
2 answers:
Anna [14]3 years ago
8 0

Answer:

Ryan purchased 5 notebooks

Step-by-step explanation:

you take away the cost of the magazine which leaves you with 10 then you divide 10 by the cost of the notebooks which is 2 and that leaves you with 5

Hope this helped!

Tamiku [17]3 years ago
3 0
Answer
If Ryan spent $15 on a magazine and some notepads, and the notepads each cost $2 and the magazine cost $5 then Ryan bought five notepads.

Explanation
Since we know that the magazine costs five dollars we take 15 in -5 dollars off of that. 15-5 = 10. Now that we have $10 left and we know that the notepads each cost two dollars we divide 10 by 2. 10÷2 = 5. This means that each notepad costs $2 and that he bought five of them. You can check your answer by reversing the equation. If you bought five notepads and they each cost two dollars you spend 10 dollars (5 x 2 = 10).




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A baker buys 19 apples of two different varieties to make pies. The total cost of the apples is $5.10. Granny Smith apples cost
Natasha2012 [34]

The baker bought 7 gala apples, and 12 granny smiths apples

<em><u>Solution:</u></em>

Let "x" be the number of gala apples bought

Let "y" be the number of granny smith apples bought

Cost of 1 gala apple = $ 0.30

Cost of 1 granny smith apple = $ 0.25

<em><u>A baker buys 19 apples of two different varieties to make pies</u></em>

Therefore,

number of gala apples bought + number of granny smith apples bought = 19

x + y = 19 --------- eqn 1

<em><u>The total cost of the apples is $5.10</u></em>

Therefore, we can frame a equation as:

number of gala apples bought x Cost of 1 gala apple + number of granny smith apples bought x Cost of 1 granny smith apple = 5.10

x \times 0.30 + y \times 0.25 = 5.10

0.3x + 0.25y = 5.1 -------- eqn 2

<em><u>Let us solve eqn 1 and eqn 2</u></em>

From eqn 1,

x = 19 - y ---------- eqn 3

<em><u>Substitute eqn 3 in eqn 2</u></em>

0.3(19 - y) + 0.25y = 5.1

5.7 - 0.3y + 0.25y = 5.1

5.7 - 0.05y = 5.1

0.05y = 5.7 - 5.1

0.05y = 0.6

y = 12

<em><u>Substitute y = 12 in eqn 3</u></em>

x = 19 - 12

x = 7

Thus the baker bought 7 gala apples, and 12 granny smiths apples

6 0
3 years ago
Suppose you are asked to find the area of a rectangle that is 2.1-cm wide by 5.6-cm long. Your calculator answer would be 11.76
IRINA_888 [86]

Answer:

The area of the rectangle is 12 cm² (to two significant figures)

Step-by-step explanation:

To determine the area of a rectangle that is 2.1-cm wide by 5.6-cm long,

The area of a rectangle is given by

Area = l × w

where l is the length

and w is the width

From the question,

l = 5.6 cm

and w = 2.1 cm

Hence, Area of the given rectangle will be

Area = 5.6 cm × 2.1 cm

Area = 11.76 cm²

Now, we will convert the answer to two significant figures

Then,

Area = 12 cm²

Hence, the area of the rectangle is 12 cm² (to two significant figures)

3 0
3 years ago
Type the correct answer in the box. Use numerals instead of words.
stiks02 [169]

Answer:

78

Step-by-step explanation:

(-5)•(-5) + 3•21= 25+ 63= 78

7 0
3 years ago
Which of the following are polynomial functions?
Vinil7 [7]

A polynomial function is a function involving only non-negative (positive and 0) integer powers of 'x', i.e. all terms with ' 'x' have a non-negative integer power, such as a quadratic x^{2} x^{3} and so on.

Option E is the answer.

Rest all are wrong answers. they do not have positive integers.                      

4 0
3 years ago
Read 2 more answers
A cone has a radius of 3 and a height given by the expression 2a. Which expression represents the volume of the cone?
DiKsa [7]
V=(1/3)hπr^2 where h=height and r=radius
given
radius=3
height=2a

r=3
h=2a

v=(1/3)hπr^2
v=(1/3)(2a)π(3)^2
v=(1/3)2aπ9
v=6aπ


so the expression would be some variaant of v=6aπ
5 0
3 years ago
Read 2 more answers
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