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snow_tiger [21]
3 years ago
15

If your teacher tells you to do questions 38 through 51 in your math book for homework, how many questions is that?

Mathematics
2 answers:
Elina [12.6K]3 years ago
8 0

Answer:

It would be 13 questions.

Step-by-step explanation:

If you had to do questions 31 through 51 for homework it would be 13 because...

51 - 38 = 13

Crank3 years ago
3 0

Answer:

13

Step-by-step explanation:

51 - 38 = 13

also 13 + 38 = 51

brainliest.

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What are order of operations and which do i do first
Marina86 [1]

Answer:

PEMDAS

P- Parenthesis

E- Exponents

M- Multiplication

D- Division

A- Addition

S- Subtraction

The first step or what you solve first is parenthesis

3 0
3 years ago
Read 2 more answers
When the sum of the internal angles of a polygon is 10 right angles, then  how many sides does it have? ​
Varvara68 [4.7K]

Answer:

7

Step-by-step explanation:

Let's say our sum is s.

s = 10 right angles

a right angle is 90 degrees

s = 10 (90)

s= 900

Given the amount of sides in a polygon (n), the sum of the interior angles is equal to

(n-2) * 180

Therefore, the sum of the interior angles is equal to

(n-2) * 180 = 900

divide both sides by 180 to help isolate n

n-2 = 5

add 2 to both sides to isolate n

n = 7

3 0
3 years ago
Find the surface area of the pyramid shown to the nearest whole number get brainlists
alexdok [17]

Answer:

the answer is obviously B

Step-by-step explanation:

3 0
3 years ago
Is this answer correct on problem 3
Yuri [45]
-1/4*x^2-x+3=-1/4*(x^2+4x)+3=-1/4*(x^2+4x+4)+4=-1/4*(x+2)^2+4
x0=-2
6 0
3 years ago
Read 2 more answers
Can you solve this? ;)
katovenus [111]
Hi there!

The answer is C.
25x + 12y + 4 \leqslant 130

The question has already revealed the following data:
x = number of tickets.
y = number of t-shirts.

We can now find the total cost function.
The cost of 1 ticket is $ 25
and therefore the total cost for all of the tickets is $25 ×
the amount of tickets, mathematically $25 × x, hence 25x.

The cost of 1 shirt is $ 12
and therefore the total cost for all of the tickets is $12 ×
the amount of shirts, mathematically $12 × y, hence 12y.

When making the total cost function, don't forget to include the service fee of $4.

Now we can conclude that the total cost function is the following:
25x + 12y + 4

Maya only has $130 and therefore the total cost must be smaller than or equal to this amount of money. The answer is C.
25x + 12y + 4 \leqslant 130
7 0
3 years ago
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