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ELEN [110]
3 years ago
13

How do you do x=2y+3 2x-3y=4

Mathematics
1 answer:
Rom4ik [11]3 years ago
8 0
\left \{ {{x=2y+3} \atop {2x-3y=4}} \right. \\\\2(2y+3)-3y=4\\4y+6-3y=4\\4y-3y=4-6\\y=-2\\\\x=2\cdot(-2)+3\\x=-4+3\\x=-1\\\\ \left \{ {{y=-2} \atop {x=-1}} \right.
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Two sentences to describe the ratio
tamaranim1 [39]

Answer:

Ratio is how many times a number contains another. A ratio can be found by doing the equation multiplying or dividing each term in the ratio by the same number

Step-by-step explanation:

7 0
3 years ago
A baseball team fundraiser collected​ $2,400 from the sale of balloons and banners. The amounts earned from balloons and banners
kumpel [21]

Answer:

  • 400 balloons
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Step-by-step explanation:

If the amounts earned from the sale of each item were the same, then both amounts were $2400/2 = $1200.

The number of balloons sold at $3 each was $1200/$3 = 400.

The number of banners sold at $4 each was $1200/$4 = 300.

400 balloons and 300 banners were sold.

___

<em>Check</em>

Total sales was ...

  $3 × 400 + $4 ×300 = $1200 +1200 = $2400 . . . answer checks OK

3 0
4 years ago
Read 2 more answers
PLEASE ANSWER ASAP WILL GIVE BRAINLIEST
Angelina_Jolie [31]

<em>Hellooo!!! :)</em>

Answer:

When (2,3) is substituted into the first equation, the equation is true

When (2,3) is substituted into the second equation, the equation is false

The ordered pair  is not a solution to the system of linear equations

Step-by-step explanation:

when (2,3) is subbed into equation 1, it is true

when (2,3) is subbed into the second equation, it is false

the ordered pair (2,3) is not a solution to the system of linear equations

8 0
3 years ago
Two wires support a young tree. The wires reach the tree 2 feet above the ground and are each 3.5 feet from the base of the tree
guapka [62]
5.74 Feet Hope this helps <3 
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3 years ago
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Lisa [10]

Answer:

Answer in explanation

Step-by-step explanation:

The two laws are mathematical laws which are used in navigating problems which involves triangles. While the Pythagorean theorem is used primarily and exclusively for right angled triangle, the cosine rule is used for any type of triangle.

So, why is the cosine rule a stronger statement? The reason is not far fetched. As said earlier, the cosine rule can be used to resolve any triangle type while the Pythagorean theorem only works for right angled triangle. In fact, we can say the Pythagorean theorem is a special case of cosine rule. The reason why the expression is different is that, for the expression, cos 90 is zero, which thus makes our expression bend towards the Pythagorean expression view.

6 0
3 years ago
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