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leonid [27]
4 years ago
15

-x-4y when x=-7 and y=5

Mathematics
1 answer:
sveta [45]4 years ago
4 0

Answer:

-27

Step-by-step explanation:

-7 - (4 * 5)

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Sin Z = <br><br> Cos Z = <br><br> Tan Z =
Daniel [21]

sin z= z/y

cos z= x/y

tan z= z/x

4 0
3 years ago
A is 60% of B , B is 30% of C, what percentage of C is A
zaharov [31]
A is 30% more than B. So, A = B + 30% of B = B + 30/100 *B = B + 3/10 *B = 13/10 *B. B is 60% less than C. So, B = C - 60% of C = C - 60/100 *C = C - 3/5 *C = 2/5 *C.
5 0
4 years ago
You purchase 5 pounds of apples and 2 pounds of oranges for $9.Your friend purchases 5 pounds of apples and 6 pounds of oranges
babymother [125]

Answer:

x = 1 and y = 2

Step-by-step explanation:

Let apples are represented by x

and let oranges are represented by y

You purchase 5 pounds of apples and 2 pounds of oranges for $9. This line in equation format can be written as:

5x + 2y = 9

Your friend purchases 5 pounds of apples and 6 pounds of oranges for $17.

This line in equation format can be written as:

5x + 6y = 17

Now we have two equations:

5x + 2y = 9 -> eq (i)

5x + 6y = 17 -> eq(ii)

We can solve these equations to find the value of x and y.

Subtracting eq(i) from eq(ii)

5x + 6y = 17

5x + 2y = 9

-     -         -

_________

0+4y= 8

=> 4y = 8

y= 8/4

y = 2

Now, putting value of y in eq (i)

5x + 2y = 9

5x +2(2) = 9

5x +4 = 9

5x = 9-4

5x = 5

x = 1

so, x = 1 and y = 2

8 0
3 years ago
PLZ HRLO ME WITH THUA HARD QUESTIONS
love history [14]
It would be D hope this helps
8 0
3 years ago
Read 2 more answers
Can you help with both questions 4 and 5?
cupoosta [38]
Well since the triangle is split into 2 triangles and they both are the same size so BD on the bottom is 15 which means naturally BC must be 30. Five I'm not sure about
8 0
3 years ago
Read 2 more answers
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