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krek1111 [17]
3 years ago
13

Which of the following is true concerning the expression 5x + 7 + 2x? Please circle the correct answer.

Mathematics
1 answer:
jasenka [17]3 years ago
7 0
Its C because both 5x and 2x have the same x at the end and their both considered like terms. so the answer would be C and if it was to be solved 5x+2x= 7x and 7+7x would be the final answer. since the 7 with no x has no x, it wouldnt have to be solved or simplified
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Patti is using mental math to evaluate the expression (70 + 12.8 + 30) + 6.1. She recognizes that the expression will be easier
LekaFEV [45]

Answer:

GIVEN :

Patti is using mental math to evaluate the expression (70 + 12.8 + 30) + 6.1

TO FIND :

The properties of operations allow Patti to simplify.

SOLUTION :

Given that Patti is using mental math to evaluate the expression (70 + 12.8 + 30) + 6.1.

Option d) She can use the commutative property to rewrite the expression as (70 + 30 + 12.8) + 6.1 is correct.

For :

Patti's expression is (70 + 12.8 + 30) + 6.1

By using the commutative property of addition

a+b=b+a

(70 + 12.8 + 30) + 6.1

= (70+30+12.8)+6.1  (here a=12.8 and b=30)

∴ the properties of operations allow Patti to take is the commutative property of addition.

6 0
3 years ago
18. El equipo de docentes del Área de Formación Humanística decide repartir 195 ejemplares de libros de lectura a 4 estudiantes
irina [24]

Answer:

Each of the students absent for 1, 2, 4 and 5 days get 57, 53, 45 and 40 copies of the the reading books respectively.

Step-by-step explanation:

English Translation

The team of teachers from the Humanistic Training Area decides to distribute 195 copies of reading books to 4 students previously classified on their own merits. But the distribution will be made taking into account absences from classes during the first cycle. How many books does each student receive if their absences have been 1; two; 4 and 5 days, respectively?

Solution

Because the more the number of days absent, the less the number of books each of the 4 students deserve, we have to employ an elaborate scheme.

If 195 copies are distributed equally between 4 People, each person gets 48.75 copies of the books.

Now, if we add another 48.75 copies of books to the total number of books, each person gets 60.9375 books.

But, we can then divide 48.75 extra books on top according to the number of days absent and subtract each person's number from the assumed 60.9375 books, with an extra 48.75 books.

Total number of days absent = 1 + 2 + 4 +5 = 12

(48.75/12) = -4.0625 copies for each absent day.

The student with only 1 absent day gets 60.9375 - 4.0625 = 56.875 copies = 57 copies

The student with 2 absent days, gets = 60.9375 - (2×4.0625) = 52.8125 copies = 53 copies

The student with 4 absent days, gets = 60.9375 - (4×4.0625) = 44.6875 copies = 45 copies

The student with 5 absent days, gets = 60.9375 - (5×4.0625) = 40.425 copies = 40 copies

Hence, each of the students absent for 1, 2, 4 and 5 days get 57, 53, 45 and 40 copies of the the reading books respectively.

Hope this Helps!!!

6 0
3 years ago
Consider the inequality -20.2 > 0y. Which of the following must be true? Check all that apply.
netineya [11]

I think the answer is 0>y

5 0
3 years ago
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timofeeve [1]

Answer:

C im pretty sure 7.02 and 0.34

Step-by-step explanation:

7 0
3 years ago
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you run a delivery service between two small islands which are connected by a bridge and connected to the mainland by several br
ANEK [815]

Answer:

"Through" (and any subsequent words) was ignored because we limit queries to 32 words.

6 0
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