2 years ago

Why math was invented and why childrens hate it

1 answer:

4 0

The origins of mathematics date back to early pre-historic times that were, well, prehistory. That means that we have no proof of the origins of the first use of mathematics, but we can infer. The first peoples on earth would've had to deal with principles of number, magnitude, and form on a daily basis. From deciding which berry to eat or which basic task accomplished the most work in the shortest amount of time.

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Please help me ASAP!!

Sati [7]

The answer is D, i.e. the system was solved via elimination

If you multiply the first equation by 5, the system becomes

$\left \{ {{-5x-10y=35} \atop {5x-6y=-3}} \right.$

If you sum the two equations, you get

$-16y = 32$

And so if you substitute the second equation of system A with this new equation, you'll get system B.

3 0

2 years ago

How do I solve this problem correctly?

Nat2105 [25]

What is the question for the problem are you trying to figure out area or perhaps perimeter and of what the shaded or non shaded next time include that in your answer.

5 0

2 years ago

$14,038 is invested, part at 14% and the rest at 12%. If the interest earned from the amount invested at 14% exceeds the interes

Advocard [28]

Answer:

492.99

Step-by-step explanation: x = amount invested at 12%

y = amount invested at 9%

---

x + y = 20287

0.12x = 0.09y + 492.99

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put the system of linear equations into standard form

---

x + y = 20287

0.12x - 0.09y = 492.99

5 0

2 years ago

Please help me with this i need this grade

Wittaler [7]

Answer: B/The second answer

Step-by-step explanation:

5 0

2 years ago

I need help remembering the steps too solve 6x +9 =12

svp [43]

Answer:

x= 1/2

Step-by-step explanation:

6x+9=12

Step 1: Subtract 9 from both sides.

6x+9−9=12−9

6x=3

Step 2: Divide both sides by 6.

6x/6= 3 /6

And Your Answer Will Be:

x= 1/2

3 0

3 years ago