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Anit [1.1K]
3 years ago
6

Help meee please Mark as a brainlist if you explain step by step

Mathematics
1 answer:
Korolek [52]3 years ago
8 0
The two triangles are congruent which means they're equal to each other according to the statement given (DEF=GHJ). They have the same measurements. The answer to your question is JH= 30 ft since JH is the same lenghth as EF. 
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According to the Complex Conjugate Root Theorem, if a+bi is a root of a quadratic equation, then __blank__ is also a root of the
Trava [24]

Answer:

a-bi


Step-by-step explanation:

If a quadratic equation lx^2+mx+n=0 has one imaginary root as a+bi then the other root is the conjugate of a+bi = a-bi

Because we have l, m and n are real numbers and they are the coefficients.

Sum of roots = a+bi + second root = -m/l

When -m/l is real because the ratio of two real numbers, left side also has to be real.

Since bi is one imaginary term already there other root should have -bi in it so that the sum becomes real.

i.e. other root will be of the form c-bi for some real c.

Now product of roots = (a+bi)(c-bi) = n/l

Since right side is real, left side also must be real.

i.e.imaginary part =0

bi(a-c) =0

Or a =c

i.e. other root c-bi = a-bi

Hence proved.


3 0
3 years ago
Simplify a polynomial: (3x–4y)²–(3x–4y)(3x+4y)
Vika [28.1K]

Step-by-step explanation:

(3x-4y)×(3x-4y-(3x+4y))

(3x-4y)×(3x-4y-3x-4y)

(3x-4y)×(-8y)

-8y×(3x-4y

8 0
3 years ago
Read 2 more answers
Which of the following values of r will result in a true statement when substituted into the given equation?
Charra [1.4K]

Answer:

the right answer is -5 (B)

Step-by-step explanation:

-(-5) +5(-5+2)

5 + -15 = -10

3 0
3 years ago
Read 2 more answers
Will mark brainliest if amswer right pitcure included​
just olya [345]

Answer:

QPT is obtuse

SPQ is acute

TPR is right

Step-by-step explanation:

Took geometry two years ago

8 0
3 years ago
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*****NEED ANSWER ASAP*****
Kay [80]

Answer:

-1.2 that is the point hope this helps

Step-by-step explanation:


5 0
3 years ago
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