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Dafna11 [192]
3 years ago
8

What is 12 1/4-(-4 1/2)

Mathematics
2 answers:
trasher [3.6K]3 years ago
8 0

Answer:

in decimal form it would be 16.75

in fraction form it would be 67/400

morpeh [17]3 years ago
4 0

Answer:

203/4

(decimal: 50.75)

Step-by-step explanation:

121/4 − −41/2=

121/4 + 41/2=

121/4 + 82/4=

121 + 82/4

= 203/4

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PLease help me out with this...I will mark the first one as the brainiest answer.
Slav-nsk [51]
You cannot add row 2 to column 3 because they have different dimensions. You can do any of the other operations, but the only one that makes any sort of sense is ...
  Multiply row 2 by -1 and add it to row 3

_____
It makes no sense to multiply a row by zero. That makes the entire row zero and makes the matrix useless for finding any sort of solution.

You can switch columns, but that doesn't get you any closer to a solution here.

If I were trying to find a solution, I might
  switch rows 1 and 2
  multiply the new row 1 by -3 and add it to the new row 2
  multiply the new row 1 by 2 and add it to row 3
This sequence of operations will make the first column [1 0 0], reducing the problem to 2×2 from 3×3.
3 0
3 years ago
Read 2 more answers
At the city museum, child admission is $5.20 and adult admission is $8.70. On Saturday, 150 tickets were sold for a total sales
Evgen [1.6K]

Answer:

  91 child tickets were sold

Step-by-step explanation:

Let c represent the number of child tickets sold. Then the number of adult tickets sold is (150-c) and the total revenue is ...

  5.20c +8.70(150-c) = 986.50

  -3.50c +1305 = 986.50 . . . . simplify

  -3.50c = -318.50 . . . . . subtract 1305

  c = -381.50/-3.50 = 91

The number of child tickets sold that day was 91.

4 0
2 years ago
Read 2 more answers
Pls help asap important assessment
Effectus [21]

Answer:

C

Step-by-step explanation:

my teacher tells us that that answer is the most inportant in math in any grade

4 0
2 years ago
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What is the volume of the rectangular prism? A prism has a length of 5 centimeters, height of 8 and one-half centimeters, and wi
nlexa [21]

Answer:

<em>Option D: 159 3/8 cm^3 </em>

Step-by-step explanation:

1. Let us rewrite the dimensions, and the options to make this a little more clear ~ (dimensions) 5 cm, 8 1/2 cm, 3 3/4 cm ⇒ (options) 17 1/4 cm^3, 18 3/4 cm^3, 27 1/4 cm^3, and 159 3/8 cm^3

2. To find the volume of most 3-dimensional figures, you would have to multiply the Base * height, so for a rectagular prism ⇒ <em>Base * height = length * width * height</em>

3. Substitute and compute the volume through algebra:

5 cm * 8 1/2 cm * 3 3/4 cm =

5 cm * 17/2 cm * 15/4 cm =

85/2 cm^2 * 15/4 cm =

1275/8 cm^3 =

<em>159 3/8 cm^3</em>

4. This means that the<em> Volume of the Rectangular Prism = 159 3/8 cm^3 (Option D)</em>

3 0
3 years ago
Read 2 more answers
What will be the result when you add all integers from -100 to 100? ​
marta [7]

Answer:

0

Step-by-step explanation:

The negative would just cancel the positives out. Therefore, since they are both adding together the same things the negatives would make the outcome 0.

3 0
3 years ago
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