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12345 [234]
4 years ago
15

Please help me answer the question in the picture!

Mathematics
1 answer:
Natasha2012 [34]4 years ago
7 0

Answer:

x=75

Step-by-step explanation:

A( I mean angle)+B+C+D=360°

A=C

B=D

2A+2D=360°

A+D=180°

30°+x+x=180°

2x=150°

x=75

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10.) The Jakobshavn Glacier in Greenland, reputed to be the fastest in the world, has sped up
MatroZZZ [7]

Answer:

12.6 kilometers

Step-by-step explanation:

5.25/5 = x/12

cross multiply

5x = 63

divide both sides by 5

x = 12.6 kilometers

8 0
3 years ago
a company orders two types or gravel to use in a landscaping project. black gravel is $0.55 per pound and red gravel is $0.80 pe
garri49 [273]
So i guess the question is how much red gravel can they buy?

Red gravel: 3000 pounds
Black gravel: 2000 pounds

x+y=5000
0.80x+0.55y=3500

If it helped, reward me with a brainlist,
if it didn't, tell me and i'll help you understand
4 0
4 years ago
PLEASE HELP
Savatey [412]
Correct Answer: Option A

The next step in simplification will be to convert the squared term so that it no longer contains a square.

So, we are to simplify the term cos^{2}(2x)

Using the half-angle identity we can write:

cos^{2}(2x)= \frac{1+cos(4x)}{2}

Using this value, the equation becomes:

sin^{4}x=1-2cos(2x)+ \frac{ \frac{1+cos(4x)}{2} }{4}

Therefore, option A is the correct answer.
4 0
4 years ago
Find the surface area of a conical grain storage tank that has a height of 42 meters and a diameter of 20 meters. Round the answ
Sergio [31]
The surface area of a right circular cone is SA =<span>\pi r (r + \sqrt{ h^{2} + r^{2} } )</span>

The diameter (d) is equal to 20 meters and half of it is equal to the radius which is 10 meters.

The height (h) of the tank is equal to 42 meters.

Substituting the given to the equation:

SA = \pi 10 (10 + \sqrt{ 42^{2} + 10^{2} } )
= 1670.51 square meters or the closest answer is 1,671 m2
7 0
3 years ago
Solve and show work 7^(4x-3)=22
Sophie [7]
7^{4x-3}=22
\log_77^{4x-3}=\log_722
(4x-3)\log_77=\log_722
4x-3=\log_722
4x=3+\log_722
x=\dfrac{3+\log_722}4
4 0
4 years ago
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