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3 years ago

Can someone help me out :P

Mathematics

2 answers:

Vinil7 [7]3 years ago

8 0

Step-by-step explanation:

myrzilka [38]3 years ago

3 0

The answer is c 2.5 to replace the clock

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System w/Elimination<br>-2x-9y=-25<br><br>-4x-9y=-25

Lerok [7]

x=0 and y= $\frac{25}{9}$

Step-by-step explanation:

We need to solve the system by elimination and find values of x and y

$-2x-9y=-25\,\,\,(1)\\-4x-9y=-25\,\,\,(2)$

Subtract eq(1) and eq(2)

$-2x-9y=-25\,\,\,(1)\\-4x-9y=-25\,\,\,(2)\\+\,\,\,+\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,+\\---------\\2x=0\\x=0$

Now Multiply equation (1) by 2 and subtract with eq(2)

$-4x-18y=-50\\-4x-9y=-25\\+\,\,\,\,\,\,+\,\,\,\,\,\,\,\,\,\,\,\,\,\,+\\--------\\-9y=-25\\y=\frac{-25}{-9}\\y=\frac{25}{9}$

So, x=0 and y= $\frac{25}{9}$

Keywords: system by elimination

Learn more about system by elimination at:

#learnwithBrainly

5 0

3 years ago

Ellie is preheating her oven before using it to bake. The initial temperature of the oven is 65° and the temperature will increa

sineoko [7]

Answer:

Temp after 6 minutes: 125 degrees Temp after tt minutes: 65 + 10t

Step-by-step explanation:

65 x 10(6) = 125

7 0

3 years ago

4x+6=4+(2x+1) is the answer 6=6

seropon [69]

Answer:

Step-by-step explanation:

4x+6=4+(2x+1)

Opening bracket

4x + 6 = 4 + 2x + 1

Collecting like terms

4x - 2x = 4 + 1 - 6

2x = -1

x = -1/2

4 0

3 years ago

Read 2 more answers

4 less than a number n is -15 <br> N= ?

Tomtit [17]

N = -11. If 4 less than n is -15, then the following must be true.

6 0

3 years ago

Which methods could you use to calculate the y-coordinate of the midpoint of a vertical line segment with endpoints at (0,0) and

Olenka [21]

Answer:

add the y coordinates of the two lines and divide by 2

Step-by-step explanation:

½[0+(-12)]

½[0-12]

½[-12)

y co-ordinate of the midpoint is -6

7 0

3 years ago