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Allushta [10]
3 years ago
15

True or False. If False explain your reason

Mathematics
1 answer:
faust18 [17]3 years ago
6 0
1. false because it has only 2 triangular faces
2. true
3. true
4. i think its false, it has four
5.
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Solve 2x+3y=2<br> 5x-y=-29<br> By elimination
Andreyy89

Answer:

\huge\boxed{x=-5,\ y=4\to(-5,\ 4)}

Step-by-step explanation:

\left\{\begin{array}{ccc}2x+3y=2\\5x-y=-29&\text{multiply both sides by 3}\end{array}\right\\\\\underline{+\left\{\begin{array}{ccc}2x+3y=2\\15x-3y=-87\end{array}\right}\qquad\text{add both sides of the equations}\\.\qquad17x=-85\qquad\text{divide both sides by 17}\\.\qquad\dfrac{17x}{17}=\dfrac{-85}{17}\\.\qquad\boxed{x=-5}\\\\\text{Substitute it to the second equation:}\\\\5(-5)-y=-29\\\\-25-y=-29\qquad\text{add 25 to both sides}\\\\-25+25-y=-29+25\\\\-y=-4\qquad\text{change the signs}\\\\\boxed{y=4}

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3 years ago
In a right triangle the leg opposite to the acute angle of 30° is 7 in. Find the hypotenuse and other leg.
Maksim231197 [3]
This is a 30-60-90 triangle. 
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5 0
3 years ago
Read 2 more answers
How much trail mix will each person get if 5 people share 1 pound of trail mix?
JulijaS [17]

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5 0
3 years ago
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Is 2 squared + 3 squared = 4 squared a true statement? Explain.
kramer

Answer:

It is not true it is false.

Step-by-step explanation:

since 2^2+3^2=4^2

4+9=16

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8 0
3 years ago
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Answer:

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Step-by-step explanation:

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