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strojnjashka [21]
3 years ago
15

Solve 2x+y=-1 and -x+y=-7 in substitution method​

Mathematics
1 answer:
lesantik [10]3 years ago
3 0

Answer:x=2 y=-5

Step-by-step explanation

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Consider the graph shown.
enot [183]

Answer:

slope- 3/4. equation- y=3/4x+1

Step-by-step explanation:

to get the equation, you use the formula y=mx+b, where m is the slope and b is the y intercept, which means it is where the line touches the y axis

5 0
3 years ago
I need help with this problem please.
Vera_Pavlovna [14]

Answer:

1725ft^2

Step-by-step explanation:

Area of trapezoid:

\frac{b_1+b_2}{2}*h

Substitute the values and solve:

\frac{50+65}{2}*30=1725ft^2

5 0
3 years ago
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Please help :,) thank youu
choli [55]

Answer:

\frac{V}{pi(r^2)}= h

Step-by-step explanation:

Just divide both sides by pi r^2 to cancel it form the right side and you will be left with:

\frac{V}{pi(r^2)}= h

4 0
3 years ago
What is the quotient if 3/8 of 30 is divided by 15/16 of 5/10?
Katen [24]

Answer:

24

Step-by-step explanation:

That would be:

(3/8)(30)

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

(15/16)(1/2)

This can be reduced in various ways.  First, divide that 30 by 15, obtaining:

   6/8

-----------

   1/32

Now invert the divisor (1/32) and multiply:

(6/8)(32/1)

This reduces to 6*4, or 24.

4 0
3 years ago
If P*Q = PxQ - 7,<br> what is 9*5?
ycow [4]

Given problem:

 What is 9*5;

 The formula P*Q  = P x Q  - 7;

To  find 9*5, simply make P = 9 and Q = 5

Input into the equation and solve;

   

   P*Q  = P x Q  - 7    =   9 x 5 - 7

                                 = 45 - 7

                                 = 38

The solution to this problem is 38.

4 0
3 years ago
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