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evablogger [386]
3 years ago
8

Find the missing angle A in the triangle

Mathematics
1 answer:
Jobisdone [24]3 years ago
6 0

Answer:

f. none of the above

Step-by-step explanation:

90 + 63 = 153

180 - 153 = 27

∠A = 27°

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2(1 – x) > 2x HELP ASAP!!! I CANT FIGURE THIS OUT
katrin [286]
<h3>Answer:  x < 1/2</h3>

This is the same as saying x < 0.5 since 1/2 = 0.5

====================================================

Work Shown:

2(1-x) > 2x

2*1 + 2*(-x) > 2x ..... distribute

2 - 2x > 2x

2 > 2x+2x .... adding 2x to both sides

2 > 4x

4x < 2 ..... flip both sides; flip the inequality sign

x < 2/4 ..... dividing both sides by 4; see note below

x < 1/2

Note: We do not flip the inequality sign here because we are dividing both sides by a positive value. The inequality sign would only flip if you divide both sides by a negative number.

4 0
3 years ago
Which numbers are rational? select all that apply. A. pi B. √50 C. 2.3 D. √144
aev [14]
C. 2.3
D.√144


Rational roots or decimals are numbers that have an end point. 

pi 'technically' never ends, while √50 = 7.07106781<span>…, which never ends either
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hope this helps
5 0
3 years ago
Read 2 more answers
How do I solve this????<br><br> Simply the following 3 2/7 + 2 3/14 + 4 3/7.
IrinaVladis [17]
It will be
3 4/14+2 3/14+4 6/14=9 13/14
8 0
3 years ago
Round 1.595 to 2 decimal places
Karo-lina-s [1.5K]
1.595 to 2 decimal points is 1.60 because the second decimal place is nearest to 10.
3 0
3 years ago
Given: △ABC; AB=BC, m∠BDA = 60°, BD=4 cm, BD ⊥ BA . Find: DC, AC.
vekshin1

Answer:

DC = 10.93 cm ,  AC = 9.8 cm

Step-by-step explanation:

From trigonometry;

⇒ Tan 60 = AB/BD

⇒AB = BD Tan 60 ( where BD = 4 cm )

⇒ AB = 6.93 cm

Also, AB=BC , therefore;

⇒ BC = 6.93 cm

⇒ Cos 60 = BD/AD

⇒ AD = BD/ Cos 60 = 4/Cos 60

⇒ AD = 8 cm

From Pythagoras theorem;

⇒ AC^{2} = AB^{2} + BC^{2} = (6.93)^{2} + (6.93)^{2}

⇒ AC = \sqrt{96.05} = 9.80 cm

⇒ DC = BD + BC = 4 + 6.93

⇒ DC = 10.93 cm

8 0
3 years ago
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