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Vlad1618 [11]
3 years ago
10

The ratio of the number of math books to the number of comic books on a shelf is 7:3. There are 21 comic books on the shelf. Fin

d the number of math books on the shelf.
Mathematics
2 answers:
Sauron [17]3 years ago
7 0

Answer:

There are 49 math books on the shelf.

Step-by-step explanation:

math books : comic books

       7           :         3

       x           :        21

21÷3=7

7*7=49

x=49

NNADVOKAT [17]3 years ago
3 0

Answer:

49

Step-by-step explanation:

Let the number of math books on the shelf be x.

7:3\\x:21

Cross multiply the ratio and solve for x.

3x=7 \times 21\\3x=147\\x=49

There are 49 math books on the shelf.

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Solve for y y−(−10)=−41
aliina [53]

Answer:

y = -51

Step-by-step explanation:

y - (-10) = -41

Subtracting a negative number: - (-10) is the same as just adding a positive number + 10, so we'll use this to simplify the expression.

y + 10 = -41

Now, we can subtract 10 from both sides of the equation in order to isolate y.

10 - 10 = 0

-41 - 10 = -51

This means the equation is now:

y = -51

Let's check this answer:

Input -51 as y:

-51 - (-10) = -41

-41 = -41

It works!

This means y = -51 is the answer!

8 0
3 years ago
Read 2 more answers
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Alex73 [517]

Answer:

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Step-by-step explanation:

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7 0
3 years ago
A box of oats cereal measures 24 cm long by 5 cm wide 25 cm high. A box of rice cereal measures 26 cm long by 4 cm wide by 28 mm
Tanzania [10]

Answer:

Box of oat:

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cereal:

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oat is grater by 2708.8

Step-by-step explanation:

28mm was changed to 2.8 cm

7 0
2 years ago
1. What is the probability of an odd outcome?
Xelga [282]

Answer:

1. 50%

2.\frac{5}{6}

Step-by-step explanation:

1. The way to approach the probability of rolling an odd number is to start with the total numbers. Therefore, each dice has three even sides and three odd sides. Mathematically - 50% chance of landing on the odd number.

2. You have 'P' which represents probability. "N" which is the given ratio of the number of outcome. (NP) total number of the possible outcome.

P = N / NP

Dice has 6 faces. I.E. 1,2,3,4,5,6

= 6

NP, therefore, is the total number of possible outcome.

Faces less than 6. (1,2,4, and 5)

N = 5

P = N / NP = \frac{5}{6} ; it can't be reduced.

4 0
3 years ago
The function y = 2 • 1.5n models the value of a certain stock after n years. What is the recursive formula that models the situa
katen-ka-za [31]

Answer:

aₙ= 1.5aₙ₋₁ with a₁= 3

Step-by-step explanation:

recursive formula is represented by aₙ=b· aₙ₋₁

6 0
2 years ago
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