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Pani-rosa [81]
2 years ago
9

Help pls . Thank you

Mathematics
1 answer:
iren2701 [21]2 years ago
3 0

For the first one:

The angle is tan^-1 (-9/2)

From this, you can find the base of the triangle with height 54 in. Then, you can find the base of the triangle with base 74 in. Then you subtract the base of the triangle with height 54 in from the base of the triangle with height 74 in to get x.

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Please include the steps that took you to get your answer. I am very confused on what to do with the 1/2.
Juliette [100K]

First let's review how to expand this!

(ax+b)^2=a^2*x^2+2abx+a^2

In this case

(2x^2+1/2)^2=2^2*x^2+2*1/2*2x+(1/2)^2

=4x^2+2x+1/4

Done!

8 0
3 years ago
The pyramid shown has a square base that is 24 inches on each side. The slant height is 20 inches. What is the surface area of t
wlad13 [49]
About 1695.54 is the answer. 
3 0
3 years ago
Dominic, Ralf and Peter have just eaten a HUGE Christmas meal. Dominic now weighs half as much as Ralf, and Peter weighs three t
Strike441 [17]
Dominic weighs 120.

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4 0
3 years ago
(Solve and write addition Equations) Zacarias and Paz together have $756.80. If Zacarias has $489.50, how much does Paz have? Wr
serious [3.7K]
$489.50+x=$756.80 

x=amount paz has.

756.80-489.50 = 267.3

so Paz has $267.30
4 0
3 years ago
Read 2 more answers
John bikes at a speed of 10 miles per hour. His friend Brian is slower, his biking speed is only
prohojiy [21]

Answer:

  2 hours

Step-by-step explanation:

You can use the relation ...

  time = distance / speed

  time = (16 mi)/(8 mi/h) = (16/8) h = 2 h

Brian biked for 2 hours yesterday.

8 0
3 years ago
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