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Monica [59]
4 years ago
7

Solve this system of equations. x + y = -3 x - y = 1

Mathematics
2 answers:
Ksju [112]4 years ago
7 0
The correct answer is A.
Sindrei [870]4 years ago
4 0
A. (-1,-2)

Because:
x + y = -3                                     
-1 + (-2) = -3
-3 = -3

x - y = 1
-1 - (-2) = 1
-1 + 2 = 1
1 = 1
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16.8 is 10% of what number? Someone help TWT
Aloiza [94]

Answer:

168

Step-by-step explanation:

16.8 = 10%

x = 100%

To get to 100%, you have to multiply 10 by ten and 16.8 by 10. Like this:

16.8 = 10%                   original equation

16.8 (10) = 10% (10)      * both sides by 10

168 = 100%                  simplify

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7 0
3 years ago
Read 2 more answers
Can someone plz help me pretty plz
Svetach [21]

Step-by-step explanation:

\sqrt{9}  +  \sqrt{25}  - 8 \div 2 +  {3}^{2}  \\  = 3 + 5 - 4 + 9 = 13

3 0
4 years ago
When deciding to model a situation with 3D figures, what are the most important things to remember?
algol13

Answer:

to ensure the method and most importantly the formula to apply read questions again and again if not well understood

6 0
3 years ago
16y=14+9y please answer 23 points
NeTakaya

Answer:

<h2>y = 2</h2>

Step-by-step explanation:

16y=14+9y\qquad\text{subtract}\ 9y\ \text{from both sides}\\\\16y-9y=14+9y-9y\\\\7y=14\qquad\text{divide both sides by 7}\\\\\dfrac{7y}{7}=\dfrac{14}{7}\\\\y=2

4 0
3 years ago
45 points! Please help me ASAP!
zlopas [31]
2 times 10^4 means 2 with 4 zeroes after it or 20000
4 times 10^6=4 with 6 zeros after it or 400000

compare

20000 and 4000000
we can see that 4000000 is 200 times of 20000
therefor the answer is C

we can also do
(4 times 10^6)/(2 times 10^4)=4/2 times (10^6)/(10^4)=2 times 10^2=200


answer is C
8 0
3 years ago
Read 2 more answers
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