MATHEMATICS MIDDLE SCHOOL

Solving linear equation 7-x=19

Answers

Answer 1
Answer: x is equal to -12
7-(-12)=19
Answer 2
Answer:

Answer:

  x = -12

Step-by-step explanation:

To solve an equation, you want to "undo" what has been done to the variable. Here, it has been multiplied by -1 and that result added to 7. In general, you want to "undo" these operations in reverse order.

First, you need to subtract 7 to undo the addition of 7. Of course, anything you do to one side of the equation is also done to the other side:

  7 -x -7 = 19 -7

  -x = 12 . . . . . . . . simplify

Now, you want to undo the multiplication by -1. Multiplication (or division) by -1 will take care of that:

  (-1)(-x) = (-1)(12)

  x = -12 . . . . . . . . simplify

The solution is x = -12.

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Is the statement 14 square root less than 21 over 5 true or false

Answers

False it is roughly 3.74 so it is less than 5. Becuase √(14) \neq 3.74 if thats what ur asking lol

Help please how many times longer is 3/4 than 2/15

Answers

3/4 is longer than 2/15 by 37/60


3/4-2/15=37/60(0.62)

HOPE THIS HELPS!!!!!!!!!

HELP ME PLEASE WOULD MEAN SOO MUCHA kite is a quadrilateral with two pairs of adjacent, congruent sides. The vertex angles are those angles in between the pairs of congruent sides. Prove the diagonal connecting these vertex angles is perpendicular to the diagonal connecting the non-vertex angles. Be sure to create and name the appropriate geometric figures. This figure does not need to be submitted.

Answers

Answer:

Given that an image attached with this prove.


1. AD = AB, CD=CB 1. Given

2. OD = OB 2. By definition, the diagonal connecting vertec angles bisects the other diagonal

3. OA = OA 3. By reflexive property

4. triangle AOB = triangle AOD 4. By SSS congruence

5. angle AOB = angle AOD 5. By CPCTC

6. angle AOB = angle AOD = 90 6. both angles addup to 180

7. AC ⊥ DB 7. definition of right angles



Step-by-step explanation:

Kayla's school is selling tickets to a play. On the first day of ticket sales, the school sold 5 senior citizen tickets and 3 child tickets for a total of $69. The school took in $73 on the second day by selling 1 senior citizen ticket and 8 child tickets. Find the price of a senior citizen ticket and the price of a child ticket

Answers

Answer:

Senior Citizen Tickets Cost = $9

Child Tickets Cost = $8

Step-by-step explanation:

Let price of senior ticket be "s", and

price of child ticket be "c"

5 senior ticket and 3 child ticket cost 69, so we can write:

5s+3c=69

Also, 1 senior and 8 child tickets cost 73, thus we can write:

s+8c=73

Or

s=73-8c

We can put this into 1st equation and get an equation in terms of "c" and solve for c first:

5s+3c=69\n5(73-8c)+3c=69\n365-40c+3c=69\n296=37c\nc=8

Thus, c = 8

Now,

s = 73 - 8c

s = 73 - 8(8)

s = 73 - 64

s = 9

So,

Senior Citizen Tickets Cost = $9

Child Tickets Cost = $8

One case can hold 3 boxes.Each box can hold 3 binders.How man cases are needed to hold 126 binders?

Answers

14 because 126 ÷3=42 and 42÷3 =14
14 because if 1 case held 3 boxes and 3 boxes held 3 Binders, that means u would have to divide 3 by 126 which equals 42 and u would have to divide that by 3 which equals 14.

A swimmer swam 48 kilometers in d days if the swimmer swam an average of 3.2 kilometers daily

Answers

Answer:

The used conversion factor is 3.2 km/day. It took 15 days for the swimmer to swim 48 km.

Step-by-step explanation:
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