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Neporo4naja [7]
2 years ago
8

Select all the numbers that are solutions that are equal x^2=15

Mathematics
1 answer:
aleksley [76]2 years ago
4 0

Answer:

3x5=15

5x3=15

30/2=15

15x1=15

1x15=15

15/1=15

Step-by-step explanation:

Hope it helped !
Have a great day !

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What is the product of the 2 solutions of the equation x^2+3x-21=0
Advocard [28]
X²+3x-21=0

1) we solve this square equation:
x=[-3⁺₋√(9+84)] / 2=(-3⁺₋√93)/2
We have two solutions:
x₁=(-3-√93)/2
x₂=(-3+√93)/2

2) we compute the product of the 2 solutions found.
[(-3-√93)/2][(-3+√93)/2] =(-3-√93)(-3+√93) / 4=
=(9-93)/4=-84/4=-21

Answer: the product of the 2 solutions of this equation is -21
3 0
3 years ago
Which of the expressions below are equal to 5x + 20y? Select all that apply.
xeze [42]
The correct answers are A and B.
Hope this helps!
8 0
3 years ago
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How do I find the volume of this right triangular prism?
frozen [14]
I’ll try to make a step by step demonstration! Feel free to skip to step 5 for the answer, though
1. The formula for a right triangular prism is (1/2)*base*height*length, and we know what the base (4 cm) and length (8 cm) are, but not the height
2. To find the height we must divide the side triangle into two, which then gives us two right triangles
3. Focusing on just one of the right triangles, its base will be 2 cm rather than 4 (as it has been divided by two) and its hypotenuse will be 4 cm; using Pythagorean’s theorem (a^2 + b^2 = c^2), solve for the missing side (the height), which should end up being √12
4. Multiply! (1/2)4*√12*8 ≈ 55.425
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I hope this helped somewhat! Comment if clarification is needed
8 0
3 years ago
Hey can you please help me??
Ierofanga [76]

Answer:

b!

Step-by-step explanation:

5 0
2 years ago
How do you find the missing angle of a right triangle?
abruzzese [7]
When it comes to finding a missing angle of a right triangle all you have to do is subtract the sum of the other two angles that you already know. For example, when you have a right triangle and the measures of two angles are 90 and 65 all you have to do is this...
90+65= 155
and...
180-155= 25 which is the sum of the missing angle. 

Hope I helped!
5 0
3 years ago
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