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VLD [36.1K]
3 years ago
13

Solve by elimination. 3x + 4y = -6 5x - 4y = 22

Mathematics
2 answers:
Dovator [93]3 years ago
5 0

Answer:

Step-by-step explanation:

Just

Emliminate it by 3x’s

OLga [1]3 years ago
3 0

Answer:

HOPE THIS HELPED YOU

PLEASE MARK AS THE BRAINLIEST (ㆁωㆁ)

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Noah and his grandfather were returning home from a walk. When they were 800 m away from the house, the grandfather said that he
sammy [17]

They met 480 meters from the house.

<h3><u>Calculus</u></h3>

Given that Noah and his grandfather were returning home from a walk, and when they were 800 m away from the house, the grandfather said that he was thirsty, so Noah immediately ran home, got a bottle of water, and ran back to meet his grandfather who never stopped walking at a steady pace, to determine how many meters from the house did they meet if noah ran four times as fast as his grandfather walked, the following calculation must be made:

  • 200 x 4 = 800 - 200 = 600
  • 300 x 4 = 1200 - 800 - (800 - 300) = 100
  • 325 x 4 = 1300 - 800 - (800 - 325) = -25
  • 320 x 4 = 1280 - 800 - (800 - 320) = 480 - 480 = 0

Therefore, they met 480 meters from the house.

Learn more about calculus in brainly.com/question/26453068

3 0
3 years ago
Hi, I have a problem with homework can anyone help me, please?<br> f(x) =x3·ln (2x) + 7 sin(7)
dsp73

2(3x)+7sin(7)

=6x+7sin(7)

this is all i could do

4 0
3 years ago
Which statement desribes why the system has two solutions y=6x^2+1 and x^2+4​
pav-90 [236]
I Think The answer is a I hope it helps Message Me if I’m wrong and I’ll change My answer and fix it for you
3 0
3 years ago
If f(x) = 5x and g(x) = -2x + 1 find f[g(-2)]
dangina [55]

Answer:

25

Step-by-step explanation:

g(-2) = -2(-2)+1 = 5

f(g(-2))=f(5) = 5(5) = 25

8 0
3 years ago
If sinx+sin^2x=1 then what is the value of cos^12x+3cos^10x+3cos^8x+cos^6x
mr_godi [17]
\sin x+\sin^2x=1\implies\sin x=1-\sin^2x=\cos^2x

\cos^{12}x+3\cos^{10}x+3\cos^8x+\cos^6x=\sin^6x+3\sin^5x+3\sin^4x+\sin^3x
=\sin^3x(\sin^3x+3\sin^2x+3\sin x+1)
=\sin^3x(\sin x+1)^3

Let y=\sin x. Then

\sin^2x+\sin x-1=0\iff y^2+y-1=0\implies y=-\varphi,y=\varphi-1

where \varphi=\dfrac{1+\sqrt5}2\approx1.61803 is the golden ratio.

\begin{cases}y=-\varphi\\y=\varphi-1\end{cases}\implies\begin{cases}\sin x=-\varphi\\\sin x=\varphi-1\end{cases}

Since |\sin x|\le1 for all real x, we can omit the first equation, leaving us with

\sin x=\varphi-1\approx0.61803

\cos^{12}x+3\cos^{10}x+3\cos^8x+\cos^6x=\sin^3x(\sin x+1)^3
=(\varphi-1)^3\varphi^3
=1

where the last equality follows from the fact that \varphi=1+\dfrac1\varphi.
7 0
3 years ago
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