Sebastian made the following model to find the product 17 x 24 is his model correct explain

Mathematics

2 answers:

Grace [21]3 years ago

7 0

Answer:

No, it is not correct.

Step-by-step explanation:

Here, the given problem,

17 × 24

∵ 17 = 10 + 7

And, 24 = 20 + 4

Thus, 17 × 24 = (10 + 7)(20 + 4)

= 10 × 20 + 10 × 4 + 7 × 20 + 7 × 4

= 200 + 40 + 140 + 28

= 408

By comparing the above steps and Sebastian's model,

It is clear that he did incorrectly multiply 7 by 20,

i.e. he must write 140 instead of 40 while adding.

Verdich [7]3 years ago

3 0

Sebastian's model is not correct because 20x7 does not equal 14.

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The attendance at a baseball game was 400 people. Student tickets cost $2 and adult tickets cost $3. Total ticket sales were $10

mixer [17]

Let x be the number of adult tickets sold.
<span>That means 400 - x is the number of student tickets.
The revenue from adult tickets will be $3 * x, which we can call 3x.
The revenue from student ticks will be $2 * (400 - x), or 800 - 2x.
The total revenue is $1050, so that means:
3x + (800 - 2x) = 1050.
Removing the parentheses:
3x + 800 - 2x = 1050
</span><span>Subtracting 800 from both sides:
3x - 2x = 250
Simplifying the left side:
x = 250, which is the number of adult tickets.
400-x = student tickets = 400-250 = 150.
ALWAYS check!
In this case, check the revenue:
3x = 3(250) = 750
2(150) = 300
750 + 300 = 1050. Check!</span>

7 0

3 years ago

What is the result ?

yuradex [85]

Answer:

5+0=5 5+1+0=6 56

4+2=6 3+4+2=9 69

2+1=3 6+2+1=39

Step-by-step explanation:

there are 2 ways