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WITCHER [35]
3 years ago
6

The sum of two numbers is 12 and their difference is 4. What is the product of these two numbers

Mathematics
2 answers:
Tju [1.3M]3 years ago
8 0

Answer:

the answer is 32

Step-by-step explanation:

12-4=8

add 8 and 4 you'll get 12. Subtract 4 from 8 you'll get 4.

multiply 8 and 4 you'll get 32

shutvik [7]3 years ago
7 0

Answer:

48

Step-by-step explanation:

because I had times 12 and 4 to get 48

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A right triangle has one leg with a length of 48 and a hypotenuse with a length of 80. What is the length of the other leg?
Sergio [31]
Using the equation a^2+b^2=c^2, you can figure out that the other leg is 64 units
8 0
3 years ago
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<img src="https://tex.z-dn.net/?f=4%5Csqrt%5Cfrac%7B132%7D%7B143%7D%20%5E%20-2%7D" id="TexFormula1" title="4\sqrt\frac{132}{143}
Vesna [10]

Answer:

Step-by-step explanation:

Hi

[ 4\sqrt\dfrac{132}{143} ]^ {-2}}=[\dfrac{132}{143}]^{-\dfrac{2}{4}}=\sqrt{\dfrac{143}{132}}\\\\=\sqrt{\dfrac{11*13}{11*12}}=\sqrt{\dfrac{13}{12}}

do not hesitate if you have any question

5 0
3 years ago
Isabelle bought some stationery. 1/3 of them were pencils. 5/8 of the remainder were erasers and the rest were rulers. The cost
kobusy [5.1K]

Answer:

Isabelle spent $52.50 more on Erasers than rulers.

Step-by-step explanation:

Step 1

Find the quantity of each stationery bought in fraction

Let us represent the total fraction of what Isabelle bought as: x

1/3x = quantity of pencils bought

5/8 of the remainder = quantity of erasers bought

The remainder = x - 1/3x = 2/3x

5/8 of 2/3x = 5/8 × 2/3x = 5/12x

Hence, 5/12x = quantity of erasers bought

The rest is rulers

1 - (1/3 + 5/12)

1 - (4 + 5/12)

1 - 9/12

1 - 3/4

= 1/4x

Hence, 1/4 = quantity of rulers bought.

Step 2

We find the number of stationeries that Isabelle bought.

The cost of the stationery is

a Pencil: $1.20

an eraser: $1

a ruler: $0.50.

Total amount spent on stationery = 169.50

We have this equation

1.20 × 1/3x + 1 × 5/12x + 0.50 × 1/4x = 169.50

0.4x + 0.4166666667x + 0.125x =

169.50

0.9416666667x = 169.50

x = 169.50 /0.9416666667

x = 179.99999999

Approximately , the number of stationeries that Isabelle bought = x = 180

Step 3

Find the number and the amount spent on each stationery that Isabelle bought

a) i) Quantity of pencils bought = 1/3 x

x = 180

= 1/3 × 180

= 60 pencils

ii) Amount spent on pencils

If 1 pencil = $1.20

60 pencils =

60 × 1.20 = $72

b) i) Quantity of Erasers bought = 5/12x

x = 180

= 5/12 × 180

= 75 pencils

ii) Amount spent on Eraser

If 1 pencil = $1

75 pencils =

75 × 1 = $75

c) i) Quantity of rulers bought = 1/4 x

x = 180

= 1/4 × 180

= 45 pencils

ii) Amount spent on pencils

If 1 pencil = $0.50

45 pencils =

45 × 0.50 = $22.50

Step 4

We were asked to calculate how much more did she spend on erasers than rulers.

In step 3, the amount spent on Erasers = $75

the amount spent on ruler = $22.5

The difference in the amount spent = $75 - $22.5

= $52.5

Therefore, Isabelle spent $52.50 more on Erasers than rulers.

3 0
3 years ago
Roger read 4 more books in July then he did in January how many books did he read in July
ivanzaharov [21]

Answer:

13

Step-by-step explanation:

If he read 9 books in january and read 4 more in july than he did in january then he read 13 books in july.

3 0
3 years ago
First one to answer this gets brainlest:<br> What is 5 * 4 + (6 / [ 2 + 1 ] ) *11
Nonamiya [84]

Answer:

42

Step-by-step explanation:

5 * 4 + (6 / [ 2 + 1 ] ) *11

5 * 4 +2 * 11

20 +2 * 11

20+ 22

42

3 0
3 years ago
Read 2 more answers
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