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Solnce55 [7]
2 years ago
13

Solve the following inequalities and give the solutions in both set and interval notations.

Mathematics
1 answer:
Lubov Fominskaja [6]2 years ago
8 0
4y + 3 > 23 subtract 3 from both sides
4y > 20 divide both sides by 4
y > 5

-2y > -2 divide both sides by -2 (the order changes)
y < 1

(-oo, 1) ∪ (5, oo)
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I can’t figure this out at all.
Liula [17]
The fact that this triangle is a right angle triangle makes you now have 2 angles and the 1 side given, so it should be solvable.
First, You know that A=46 and C=90 as it is the right angle, and you know that the sum of any triangle's angles is 180. so now B=180-(90-46)=44
Now to the sides,
sin(B)=opp./hyp.=b/c=8/c=sin(44)
so, c=8/sin(44) which is approximately 11.52 unit length
now, use Pythagoras to find a,
a=√c²-b² =√11.52²-8² which is approximately 8.3 unit length.
Hope this helps.

6 0
3 years ago
The length of an edge of a cube is 9 centimeters. What is the volume of the cube?
KATRIN_1 [288]

Answer:

729

Step-by-step explanation:

Volume of cube=a^3

Volume of cube=9^3=729

3 0
2 years ago
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Could I have help with this?
elixir [45]
I cannot see the picture
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Calculate the length of the unknown side of this right-angled triangle.<br> 9 cm<br> 17 cm
Law Incorporation [45]

Answer:

14.4 cm

Step-by-step explanation:

5 0
3 years ago
Why is it important to use the order of operations to evaluate algebraic experssions?
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