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statuscvo [17]
3 years ago
11

Necesito saber el valor que falta en esta fraccion 12/30 = ?/45

Mathematics
2 answers:
Alchen [17]3 years ago
8 0

Answer:

28/45????????????????

Step-by-step explanation:

Mice21 [21]3 years ago
7 0
Can you translate this to English
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In one day, a book store earned $199 in sales for 4 copies of a new cookbook and 5 copies of a new science fiction novel. On the
Marina86 [1]

Answer:

The cookbook costs $36 per copy while the science fiction costs $11 per copy

Step-by-step explanation:

Here in this question, we are interested in calculating the price of the cookbook and the price of the science fiction novel.

Since we do not know the price of each, we start by assigning variables to stand in for these unknown prices.

Let the price of the cookbook be $x , while the price of the science fiction be $y

Now, on the first day, 4 copies of the cookbook and 5 copies of the fiction;

mathematically that would be 4 * x and 5 * y

We add both and sum to be $199

Thus we have;

4x + 5y = 199 ••••••••••(i)

On the second day;

3 copies of cookbook 3 * x = 3x with 4 copies of science fiction 4 * y

Adding both yielded 152;

Thus, we have ;

3x + 4y = 152••••••••••(ii)

So we need to solve both equations simultaneously to get the values of x and y

4x + 5y = 199

3x + 4y = 152

Multiply equation i by 3 and equation ii by 4

3 * 4x + 5y = 199

4 * 3x + 4y = 152

12x + 15y = 597

12x + 16y = 608

Now, subtract multiplied equation ii from multiplied equation i

(12x-12x) + (15y-16y) = (597-608)

-y = -11

y = 11

To get x, simply substitute in any of the equations;

let’s use equation 1

4x + 5y = 199

4x + 5(11) = 199

4x + 55 = 199

4x = 199-55

4x = 144

x = 144/4

x = 36

8 0
3 years ago
Solve for x*<br> 3y + 5<br> 17x - 70<br> 3x+15<br> 2x+5
KiRa [710]

Answer is   = 3y - 34 +5

7 0
3 years ago
X3 = 125<br> What is the anwser
asambeis [7]
41.67x3=125 hope it helps
4 0
3 years ago
Read 2 more answers
What is 7 over 100 simplified
Andru [333]
7/100 is already simplified as 7 is a prime number.
4 0
3 years ago
How much larger is a pizza in 18-in square pizza pan than a pizza made in a 18-in diameter circular pan? Use 3.14 for pi
Likurg_2 [28]

Answer:

69.66 Square inches

Step-by-step explanation:

Area of a Square = Length X Length

Length of the Square Pan =18 Inch

  • Area of the Square Pan =18 X 18 =324 Square inches

Area of a Circle =\pi r^2

Diameter of the Pizza Pan =18 Inch

Radius =Diameter/2=18/2=9 Inch

  • Area of a circular pan =3.14* 9^2=254.34 $ Square Inches

Difference in Area =324-254.34

=69.66 Square inches

A pizza made in the square pan is <u>69.66 Square inches</u> larger than that made in a circular pan.

3 0
3 years ago
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