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2 years ago

Whats 2-2? I'm 8 Please help me

Mathematics

1 answer:

jolli1 [7]2 years ago

6 0

Answer:

Step-by-step explanation:

2-2=0

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Which of these systems of equations would be best solved using the subtraction method?

Lynna [10]

Answer:

Step-by-step explanation:

1. x+2y=6 or x=6-2y

3x-2y=2

3(6-2y)-2y=2

18-6y-2y=2

18-8y=2

-8y=-18+2

-8y=-16

y=-16/-8

y=2 ans.

x+2*2=6

x+4=6

x=6-4=2 ans.

Proof:

3*2-2*2=2

6-4=2

2=2

I leave the rest for you to practice with.

3. 4x+y=7

2x+5y=-1

5. 3x+2y=-2

6x-y=6

Solve the system using the elimination method. Show all your steps.

7. -3x+3y=3

3x+y=9 add.

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

4y=12

y=12/4

y=3 ans.

3x+3=9

3x=9-3

3x=6

x=6/3

x=2 ans.

Proof:

-3*2+3*3=3

-6+9=3

3=3

I'll leave the rest for practice.

9. -5x+12y=20

x-2y=-6

11. 3x+2y=1

4x+ 6y= 7

4 0

2 years ago

Amaya's grandfather purchased a $150 savings bond when she was born. When Amaya is 30 years old, the bond will have earned 120%

Alenkinab [10]

Answer:

i think its 330 so sorry if im wrong

Step-by-step explanation:

7 0

3 years ago

What is the exact circumference of the circle?

fredd [130]

Data:

Formula: diameter = 2*radius

Formula: (Circle length)
 $C = 2* \pi *r$

Solving: Using the data
diameter = 2*radius
20 = 2*r
2r = 20
$r = \frac{20}{2}$
$\boxed{r = 10\:ft}$

Now, replace in the circumference length formula
 $C = 2 \pi *r$
$C = 2 \pi *10$
$\boxed{\boxed{C = 20 \pi \:ft}}\end{array}}\qquad\quad\checkmark$

Answer:
The exact circumference of the circle is $20 \pi \:ft$

7 0

3 years ago

Select all ratios equivalent to 30:6

Korolek [52]

Answer:

60 : 12

90 : 18

120 : 24

150 : 30

3 0

3 years ago

Does (7, 8) make the equation y = x + 5 true?

NNADVOKAT [17]

Answer:

Step-by-step explanation:

no the correct point would be (7,12)

7x1=7

7+5=12

3 0

3 years ago

Read 2 more answers