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Snezhnost [94]
4 years ago
6

What is the absolute value of -4 - 9i ? a) -13 b) 5 c) √65d) √97

Mathematics
1 answer:
Nesterboy [21]4 years ago
6 0

|-4-9i|=\sqrt{(-4)^4+(-9)^2}=\sqrt{16+81}=\boxed{\sqrt{97}}

Answer d)

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Please help. The question is in the pictures. Thanks :)
mylen [45]

Answer:

Scalene

Step-by-step explanation:

Scalene triangles always have unequal side lengths. Thia triangle has unequal side lengths, therefore it is considered scalene.

8 0
3 years ago
5h+6y+4h+9y=3h+5y6h+9y
Leokris [45]
H=6y/5y^(6) -6

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3 0
3 years ago
What is the height of this isosceles triangle?
erastova [34]

Answer:

height ≈ 11.9 units

Step-by-step explanation:

Construct a perpendicular bisector from the vertex to the base, thus splitting the triangle into 2 right triangles.

Using the sine ratio in one of these right triangles, then

sin48° = \frac{opposite}{hypotenuse} ( the opposite is the height h )

sin48° = \frac{h}{16} ( multiply both sides by 16 )

16 × sin48° = h , thus

h ≈ 11.9 ( to the nearest tenth )

5 0
3 years ago
4.
Simora [160]
M >= 85. The >= sign means greater than or equal to.
8 0
3 years ago
A phone company offers two monthly plans. Plan A costs $10 plus an additional $0.15 for each minute of calls. Plan B costs $30 p
Mkey [24]

First, you need to write to expressions to model each situation:

Plan A: 10+0.15x

Plan B: 30+0.1x


Next, set the expressions equal to each other and solve for x:

10+0.15x=30+0.1x

<em>*Subtract 0.1x from both sides to isolate the variable*</em>

10+0.05x=30

<em>*Subtract 10 from both sides*</em>

0.05x=20

<em>*Divide both sides by 0.05*</em>

x=400


The plans would have the same cost after 400 minutes of calls.


To find how much money the plans cost at 400 minutes, plug 400 into either expression.  We'll use Plan A:

10+0.15(400)

10+60

70


The plans will cost $70.


Hope this helps!

3 0
3 years ago
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