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svetoff [14.1K]
3 years ago
13

PROOF ‼️ASAP!!! BRAINLIEST!!‼️ PLS HELP + EXPLAIN!!! Thx! (NO LINKS PLEASE)

Mathematics
1 answer:
ElenaW [278]3 years ago
7 0

Step-by-step explanation:

1) m∠1 = m∠4, m∠2 = m∠3   (1) Given

2) m∠AFC = ∠1 + ∠2             (2) Angle Addition Postulate

3) m∠EFC = ∠3 + ∠4            (3) Angle Addition Postulate

4) m∠EFC = ∠1 + ∠2             (4) Substitution

5) m∠AFC = m∠EFC             (5) Transitive Property

Thnk you

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Find the missing angle (x).<br><br> Help ASAP
Zepler [3.9K]

Answer:

x=40

Step-by-step explanation:

7 0
3 years ago
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14. Michelle simplified an expression for the perimeter of the rectangle below and got X + 35.
Zigmanuir [339]

Answer:

The correct expression for the perimeter is P=(\frac{5}{3}x+70)\ units

see the explanation

Step-by-step explanation:

The complete question in the attached figure

Let

L ----> the length of rectangle

W ---> the width of rectangle

we know that

The perimeter of rectangle is equal to

P=2(L+W)

In this problem we have

L=(\frac{5}{6}x+23)\ units

W=12\ units

substitute the values

P=2(\frac{5}{6}x+23+12)

P=2(\frac{5}{6}x+35)

P=(\frac{10}{6}x+70)\ units

Simplify

P=(\frac{5}{3}x+70)\ units

so

Michelle didn't multiply the sum of length and width by 2

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3 years ago
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liberstina [14]

Answer:

True

Step-by-step explanation:

Yes,  we always assume the radical is a square root if there is no index

8 0
3 years ago
Write an equation in point-slope form for the line through the point (10, -9) with the given slope -2
Serjik [45]
Point slope is y-y1= m(x-x1) where m is slope and x1 and y1 are the known coordinates.

y-(-9)=-2(x-10)
y+9=-2(x-10)

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4 years ago
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goblinko [34]
a_n=5 \ for \ n=1 \\&#10;a_n=-10 \ for \ n=2 \\&#10;a_n=20 \ for \ n=3

You can see it's a geometric sequence because the ratio is constant (\frac{a_3}{a_2}=\frac{a_2}{a_1}).
The nth term of a geometric sequence:
a_n=a_1 \times r^{n-1}

a_1=5 \\&#10;r=\frac{a_2}{a_1}=\frac{-10}{5}=-2 \\ \\&#10;a_n=5(-2)^{n-1}

It has to be the sum for term 4 through term 15, so n=4 and the number above the sigma is 15.

Your answer:
\sum^{15}_{n=4} 5(-2)^{n-1}
3 0
3 years ago
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