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o-na [289]
3 years ago
8

Calculate the following expression. show steps 15/7 - 2/5

Mathematics
2 answers:
aalyn [17]3 years ago
8 0
15/7 x 5 and 2/5 x 7
75/35 - 14/35 = 61/35
ivolga24 [154]3 years ago
5 0

Answer:

1 26/35

Step-by-step explanation:

Before subtracting, you must find the common denominator.

The lowest number 7 and 5 can both make is 35.

Now, we must convert the fractions.

15/7 = 75/35

2/5= 14/35

Now because we have the same denominator, we can subtract.

75/35

-

14/35= 61/35.

61/35= 1 26/35.

Now you can simplify your answer. 1 26/35 cannot be simplified so that's your answer.

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At the local market, Bill buys 3 juice boxes and 2 hot dogs at a cost of $8, while Sarah buys 2 juice boxes and 1 hot dog at a c
baherus [9]

Answer:

The cost of each juice boxes is $ 2

The cost of each hot dogs is $ 1  .

Step-by-step explanation:

Given as :

The amount which Bill pays for 3 juice boxes and 2 hot dogs = $ 8

The amount which Sarah pays for 2 juice boxes and 1 hot dogs = $ 5

Let The cost of each juice boxes = $ j

And The cost of each hot dogs = $ h

Now, According to question

3 j + 2 h = 8               .........A

2 j + 1 h = 5                 ..........B

Now, solving the equations

2 × (  2 j + 1 h ) = 2 × 5

or, 4 j + 2 h = 10

I.e ( 4 j + 2 h ) - ( 3 j + 2 h ) = 10 - 8

Or, ( 4 j - 3 j ) + ( 2 j - 2 h ) = 2

Or, j + 0 = 2

∴  j = 2

So , The cost of each juice boxes = j = $ 2

Now, Put the value of j in Eq A

I.e  3 × 2 + 2 h = 8

Or, 6 + 2 h = 8

Or. 2 h = 8 - 6

or, 2 h = 2

∴   h = \frac{2}{2} = 1

So, The cost of each hot dogs = h = $ 1

Hence The cost of each juice boxes is $ 2

And The cost of each hot dogs is $ 1  . Answer

4 0
3 years ago
What is the conjugate of -1-5i?
NARA [144]

Answer:

-6

Step-by-step explanation:

is -6

4 0
3 years ago
The net change for a certain stock is the dollar value change in the stock's closing price from the previous day's closing price
Natali [406]
-3 has the greatest absolute value.
7 0
3 years ago
Find the sum.
Strike441 [17]

You are gonna use the distributive property.

4(2.5g - 4) + 3(1.2g - 2)

So you are going to multiply 4 with everything inside the first set of parenthesis and your gonna multiply 3 with everything insides the second set of parenthesis.

4 x 2.5g - 4 x 4 + 3 x 1.2g - 3 x 2

10g - 16 + 3.6g - 6

You wanna combine like terms:

10 - 3.6g + 16 - 6

6.4g + 10

You answer is 6.4g + 10.

Hope this Helps!!

6 0
3 years ago
Y=-7x+3<br> y=-x-3<br><br> Find the solution to the system of equations
Phoenix [80]
Just set the equations equal to each other
(1,-4)
8 0
3 years ago
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