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IrinaVladis [17]
4 years ago
6

Solve x for -2x- 1 = -7

Mathematics
2 answers:
Deffense [45]4 years ago
8 0

-2x -1 = -7

add the "-1" on both sides, -2x -1 +1 = -7 +1

-2x = -6

divide "-2" on both sides, -2x/-2 = -6/-2

x = 3

Lesechka [4]4 years ago
6 0

Answer:

x = 3

Step-by-step explanation:

Add 1 on both sides.

We get:

-2x = -6

Now divide -6 by -2...

-6/-2 = 3

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Anarel [89]

Answer:

  • to add to the table, continue the arithmetic sequence in each column
  • to use the table, extend the third column to 45, or multiply the first row by 9

Step-by-step explanation:

The numbers in the first column are an arithmetic sequence with a common difference of 2. The next few numbers will be 6, 8, 10, ...

The numbers in the second column are an arithmetic sequence with a common difference of 3. The next few numbers will be 9, 12, 15, ...

The numbers in the third column are an arithmetic sequence with a common difference of 5. The next few numbers will be 15, 20, 25, ...

To use the table, Mark can extend each sequence until he has a row with 45 in the third column, or he can multiply or add rows to give a result of 45 in the third column. For example, multiplying the first row by 9 gives 18:27:45 meaning that Mark needs 18 liters of blue and 27 liters of yellow to make 45 liters of green paint.

5 0
3 years ago
In a class of 7 students, there are 5 students who forget their lunch. If the teacher chooses 2 students, what will the probabil
Aleksandr-060686 [28]

Answer:

4711

Step-by-step explanation:

Answer by rothauserc(4711)   (Show Source):  

You can put this solution on YOUR website!

the probability that the first student picked has a lunch is 6/9 or 2/3

the probability that the second student picked has a lunch is 5/8

8 0
3 years ago
The door to my classroom is 84 inches tall. How many blocks would I need to stack to the height of the door, If each block is 2
nata0808 [166]

Answer:

42 blocks

Step-by-step explanation:

If each block is 2 inches, and the height of the door is 84 inches, you need to divide the height by the block size. Once you divide 84 by 2, you should get 42 blocks as your answer.

4 0
3 years ago
Solve for m: 5m - 9 = 4m + 2<br><br> 0<br><br> 11<br><br> 1<br><br> -7<br> WILL GIVE BRAINLIEST!
Tju [1.3M]

Answer:

11

Step-by-step explanation:

5m - 9 = 4m + 2

Subtract 4m and add 9 to both sides:

m = 11

8 0
3 years ago
3. At an ice cream parlor, ice cream cones cost $2.00 and sundaes cost $3.50. One day, the receipts for 114 cones and
brilliants [131]

Answer:

Number of ice cream cones = 65

Number of sundaes = 49

Step-by-step explanation:

Let

x = number of ice cream cones

y = number of sundaes

x + y = 114 (1)

2x + 3.5y = 301.50 (2)

From (1)

x = 114 - y

Substitute into (2)

2x + 3.5y = 301.50 (2)

2(114 - y) + 3.5y = 301.50

228 - 2y + 3.5y = 301.50

- 2y + 3.5y = 301.50 - 228

1.5y = 73.50

y = 73.50/1.5

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Substitute y = 49 into (1)

x + y = 114 (1)

x + 49 = 114

x = 114 - 49

x = 65

Number of ice cream cones = 65

Number of sundaes = 49

6 0
3 years ago
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