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Andrew [12]
3 years ago
7

Is y = 3/2x +5/4 and -2x+8y=-25 a solution

Mathematics
1 answer:
nekit [7.7K]3 years ago
7 0

Answer: x=-35/10

              y=-4

Step-by-step explanation:

y = 3/2x +5/4

-2x+8y=-25

--------------------

replace y in second equation with: y = 3/2x +5/4

-2x+8(3/2x+5/4)= -25

-2x+12x+10= -25

10x=-35

x=-35/10

x=-3.5

7+8y= -25

8y=-32

y=-4

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To edit a manuscript, Miguel charges 12 dollars per hour for the first 4 hours and 15 dollars per hour after the first 4 hours.
aleksley [76]

Answer:

C = 12 + 15(x - 4)

C = 15x - 48

Step-by-step explanation:

Let the number of hours = t

The total amount Miguel earns =

C

To edit a manuscript, Miguel charges 12 dollars per hour for the first 4 hours and 15 dollars per hour after the first 4 hours.

C = 12 + 15(x - 4)

Expand the t

C = 12 + 15x - 60

C = 15x - 48

Therefore, an expression for the amount, in dollars, Miguel charges if it takes him t hours to edit a manuscript, where t>4 is given as:

C = 15x - 48

5 0
3 years ago
3/5 of gallon of juice is poured equally into 6 glasses . How much juice is in each glass?
Setler [38]
Hi there! For this question, we will have to divide. When it comes to dividing fractions, we keep, change, flip. In other words, keep the first fraction the same, change division into multiplication, and flip the second fraction over by its reciprocal. In this case, 3/5 stays the same and 6/1 becomes 1/6. 3/5 * 1/6 is 3/10 or 1/10 in simplest form. There. There are 1/10 gallon of juice in each glass.
6 0
3 years ago
Find the area of <br> A triangle with a base of 8 units and a height of 13 units
daser333 [38]

Answer:

52 units squared

Step-by-step explanation:

13 \:  units\: \times 8 \: units \div 2

7 0
3 years ago
How many integer divisors does 7 have?
Vadim26 [7]

Answer:

4

Step-by-step explanation:

7 is a Prime number and has 4 integer divisors

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3 0
3 years ago
Help show work due asap​
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Answer:

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Step-by-step explanation:

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3 0
3 years ago
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