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qwelly [4]
4 years ago
15

What number must be added to the expression below to complete the square

Mathematics
1 answer:
EastWind [94]4 years ago
3 0

Where is it? In order to help you I need to see what the problem is.



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The diagram shows a 3 cm x 5 cm x 4 cm cuboid
Rainbow [258]

Answer:

a) The length of segment AC is approximately 5.83 centimeters.

b) The angle ACD is approximately 34.5º.

Step-by-step explanation:

a) Since AB \perp BC, the length of segment AC is determined by Pythagorean Theorem, that is:

AC = \sqrt{(5\,cm)^{2}+(3\,cm)^{2}}

AC \approx 5.831\,cm

The length of segment AC is approximately 5.831 centimeters.

b) Since AB \perp BC \perp AD, the length of segment AD is determined by this Pythagorean identity:

AD = \sqrt{(3\,cm)^{2}+(5\,cm)^{2}+(4\,cm)^{2}}

AD \approx 7.071\,cm

The angle ACD is determined by the following trigonometric expression:

\cos C = \frac{AC}{CD}

\cos C = \frac{5.831\,cm}{7.071\,cm}

\cos C = 0.825

C = \cos^{-1} 0.825

C \approx 34.448^{\circ}

The angle ACD is approximately 34.448º.

4 0
3 years ago
I need answers to ths ASAP i have like alot of missing assignments and i need answers fast
pishuonlain [190]

Answer:

What is the question?

Step-by-step explanation:

4 0
3 years ago
Work out m and c for the line:2y−4x=2
Alex73 [517]

Step-by-step explanation:

General equation : y = mx + c

2y - 4x = 2

2y = 4x + 2

y = 2x + 1

Therefore m = 2 and c = 1.

4 0
3 years ago
Solve for u. <br><br> 26= -12u-9+7u <br><br> Simplify your answer as much as possible.
tamaranim1 [39]
Turn equation around:
7u-9-12u=26
Combine like terms:
-12u+7u=-5u
This turns equation into:
-5u-9=26
Add -9 to both sides:
-5u-9=26
+9=+9 - and + cancel out
-5u=35
Divide by -5 to get “u” by itself:
-5u=35
———— -5 And -5 cancel making
-5 =-5 “u” By itself

u= -7
Hope this helps!

8 0
3 years ago
905,154 round to the nearest ten thousand
sergeinik [125]
It would be 910,000 because your rounding up.
5 0
4 years ago
Read 2 more answers
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