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igor_vitrenko [27]
3 years ago
10

1

Mathematics
1 answer:
spin [16.1K]3 years ago
5 0
Question: 2c - 5 = 9
Answer: c = 7
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Need a little help please ​
Maksim231197 [3]

Answer:

\sqrt{1314}

Step-by-step explanation:

a²+b²=c² so: 33²+15²=x²

1089+225=x²

1314=x²

take the square root of both sides

36.249=x or

\sqrt{1314 }

=x

8 0
3 years ago
Travis spies an owl in a tall tree. He estimates the height of the tree to be 85 feet and the angle of elevation to the bird fro
anyanavicka [17]

Answer:

63.44 feet

Step-by-step explanation:

tan(68 degrees)= 85/y  

y tan (68 degrees)=85

y=85/tan(68 degrees) ( cross multiply)

y = 34.34 feet

tan (41 degrees)=85/x+y

(x+y)tan(41 degrees)=85

x+y=85/tan 41 degrees

x=85/tan(41 degrees) - y

x= 85/tan (41 degrees)-(34.34) (cross multiply)

Therefore, Travis stepped back 63.44 feet to gain a better view!

7 0
3 years ago
120 is what percent of 90? Lo in
allsm [11]

Answer:

133.33%

Step-by-step explanation:

120= 120/90

the word OF = multiplication

120/90 x 100/100=133.33/100

133.33/100=133.33%

7 0
3 years ago
How would I find angle B for this bridge? What formula would I use?
astraxan [27]
The bridge attached is drawn according to given dimensions, and it doesn't look right.  Please double check the given dimensions.

Calculations:
Horizontal part of bottom chord below the 70 degree triangle 
= 15.1*cos(70) = 5.16  (which is a major prt of the 6.3 units.
Height of vertical pieces DF and EH
= 15.1*sin(70) = 14.19
Note that structurally, DF and EH do not help in reducing stress on the bridge, since they are perpendicular to the bottom chord.

Therefore 
angle B = atan(14.19/(6.3-5.16))=85.41 degrees

I believe the whole geometry does not look right, esthetically, and structurally, since the compression members are much longer than the tension members in the middle.  (The vertical members carry no force.) 
If  you can review the input data, or post a new question, I will be glad to help.

4 0
3 years ago
Read 2 more answers
Which statement describes the congruent triangles?
Lemur [1.5K]

Answer:

A) WXZ=YZX

Step-by-step explanation:

WXZ=YZK

4 0
3 years ago
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