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3 years ago

What is the other angle?

Mathematics

1 answer:

gregori [183]3 years ago

3 0

The three answers you have are correct. The last fourth answer is coincidentally "angle 4". If another number other than '4' was in the diagram, then you would label it as angle X (replace X with that number in question).

note: you can say "angle 4" or you can use the angle markers as you have been doing. It's probably best to stay consistent.

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Solve 2x^2 +16x+50=0

musickatia [10]

$2x^2 +16x+50=0\ \ \ \ \ |:2\\\\x^2+8x+25=0\\\\x^2+2\cdot x\cdot4+25=0\ \ \ \ |+4^2\\\\\underbrace{x^2+2\cdot x\cdot4+4^2}_{(a+b)^2=a^2+2ab+b^2}+25=4^2\ \ \ \ \ |-25\\\\(x+4)^2=16-25\\\\(x+4)^2=-9 < 0-NO\ REAL\ SOLUTION$

$COMPLEX\ SOLUTIONS\\\\(x+4)^2=-9\to x+4=\pm\sqrt{-9}\\\\x+4=-3i\ \vee\ x+4=3i\ \ \ \ |-4\\\\x=-4-3i\ \vee\ x=-4+3i$

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3 years ago

Does this graph represent a function? Why or why not?

Yuliya22 [10]

Answer:

It’s D because no lines overlap so it passes the vertical line test

Step-by-step explanation:

5 0

3 years ago

If y- 1 equals 10 then y

qaws [65]

Answer:

Step-by-step explanation:

y-1=10

Any figure that crosses equal sign, the operational sign changes.

y=10+1

y= 11

8 0

3 years ago

Two farmers each have triangular plots of land in the diagram below with approximate values shown for lengths in feet

Ray Of Light [21]

Answer:

a) Plots are similar
b) x= 5577 feet

Step-by-step explanation:

<em>Refer to attached</em>

<h3>Question</h3>

a) Are the plots of land similar?
b) Find to the exact value of x and rounded to the nearest tenth?

<h3>Solution</h3>

The small triangle have missing angle of 180° - (52° + 58°) = 70°

This is indicating both triangles have same 3 angle measures.

Since all angles are same, the triangles are similar.

<u>Corresponding sides, against corresponding angles are:</u>

6180 and 8240
x and 7436

<u>As per property of similarity, the ratio of corresponding sides is same</u>

6180/8240 = x/7436
x = 6180*7436/8240
x = 5577 feet

4 0

4 years ago

If DE =22 cm and the radius=14cm, how long is GH?

Nadya [2.5K]

What is GH and DE? is there a picture lol

4 0

3 years ago