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Scilla [17]
3 years ago
7

HELP ASAPP SHOW YOUR WORK i’ll mark brainliest!

Mathematics
1 answer:
Fiesta28 [93]3 years ago
6 0

Answer:

(x,y) (1, -4)

Step-by-step explanation:

3x-7= -4x

x=1

y= -4x1

y= -4

(x,y) (1, -4)

can i be brainliest

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I need help with this equation -11(-8×-15) my teacher said that I need to show my work pls help me.​
Zielflug [23.3K]

First calculate (-8x-15)=120

Then multiply - 11x120

=-1320

3 0
3 years ago
Prove that: <img src="https://tex.z-dn.net/?f=tan20%2B4sin20%3D%5Csqrt%7B3%7D" id="TexFormula1" title="tan20+4sin20=\sqrt{3}" al
ankoles [38]

tan( 20 ) + 4 Sin( 20 ) =

( Sin( 20 ) / Cos( 20 ) ) + 4 Sin( 20 ) =

Sin( 20 ) + 4 Sin( 20 ).Cos( 20 ) / Cos( 20 ) =

Sin( 20 ) + 2 × 2 Sin(20).Cos(20)/ Cos(20) =

Sin( 20 ) + 2 × Sin( 40 ) / Cos( 20 ) =

Sin( 20 ) + 2Sin( 40 ) / Cos( 20 ) =

Sin( 20 ) + 2Cos( 50 ) / Cos ( 20 ) =

Sin( 20 ) + 2Cos( 20 + 30 ) / Cos( 20 ) =

________________________________

2 × Cos( 30 + 20 ) =

2 × [ Cos(30).Cos(20) - Sin(30).Sin(20) ] =

2 × [ √3/2 × Cos(20) - 1/2 × Sin(20) ] =

√3 Cos(20) - Sin(20)

_________________________________

Sin( 20 ) + 2Cos ( 20 + 30 ) / Cos( 20 ) =

Sin( 20 ) + √3 Cos(20) - Sin(20) / Cos(20) =

Sin(20) - Sin(20) + √3 Cos(20) / Cos(20) =

0 + √3 Cos(20) / Cos(20) =

√3 Cos(20) / Cos(20) =

Cos(20) simplifies from the numerator and denominator of fraction

√3 × 1 / 1 =

√3

And we're done ....

4 0
3 years ago
Factor the polynomial below.
tekilochka [14]
<h3>I'll teach you how to factor 20x^2-45</h3>

----------------------------------------------

20x^2-45

Factor out the common term 5:

5(4x^2-9)

Factor 4x^2-9:

(2x+3)(2x-3)

5(2x+3)(2x-3)

Your Answer Is 5(2x+3)(2x-3)

plz mark me as brainliest :)

8 0
3 years ago
PLEASE HELP!! ITS MY EXIT TICKET! Kyle and Jillian are working on a sports banner. They painted 3/8 of the banner green and 4/8
Juliette [100K]

Answer:

7/8

Step-by-step explanation:

3/8 + 4/8

3 0
3 years ago
Y - wy = m (solve for w)<br><br><br>I need an answer ASAP.
wolverine [178]

answer:

w = (-m+y)/y

Step-by-step explanation:

y-wy = m

-wy = m-y

y = -(m-y)/w

wy= -m + y

w = (-m+y)/y

.

5 0
3 years ago
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