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BaLLatris [955]
3 years ago
9

Meredith read 21 out of 40 chapters of her library book What decimal represents the part of the chapters she has NOT yet read?​

Mathematics
1 answer:
DerKrebs [107]3 years ago
7 0
If she read 21/40, this means that she hasn’t read 19 of the 40 chapters.

You can divide 19/40 to get the decimal
19/40=0.475

Hope this helps!! :)
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The hypotenuse and one of the legs of a right triangle form an angle that has a cosine of 2 2 . what is the measure of the angle
creativ13 [48]
The correct question is
The hypotenuse and one of the legs of a right triangle form an angle that has a cosine of √<span>2/2 . 
What is the measure of the angle? 

Let
</span>∅--------> the angle
cos ∅=√2/2<span>
cos </span>∅=[distance of one of the leg/hypotenuse]
[distance of one of the leg/hypotenuse]=√2/2

<span>I could say that
</span>distance of one of the leg=√2
and 
hypotenuse=2
so
<span>applying the Pythagorean theorem
</span>c=hypotenuse=2
a=√2
b=?
c²=a²+b²-------> b²=c²-a²------> b²=2²-(√2)²-----> b²=2-----> b=√2

therefore
if a=b
then 
the angle ∅=45°

the answer is the option
<span>b.45 degrees</span>
7 0
4 years ago
91403 divided by 21. Show work
My name is Ann [436]

Answer:

The given Divisor = 21 and Dividend = 91403

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8 0
3 years ago
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Point P is located at (-3,5)
Naya [18.7K]

Answer:

P' (- 7, - 5 )

Step-by-step explanation:

A translation of 3 units to the left means subtractin 3 from the x- coordinate with no change to the y- coordinate, thus

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Under a reflection in the x- axis

a point (x, y ) → (x, - y ), thus

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5 0
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A wedding dress was marked up 35% and is now selling for $270.00. What was the original price of the dress?
qaws [65]
$270 equals 135% of the original price

270/x=135/100

135*2=270
100*2=200

Final answer: $200
5 0
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ASHA 777 [7]
The angle of depression is

tan^-1 3/7 = 23.2 deg
8 0
3 years ago
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