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3 years ago

6x - 7 + 9x - 8 = 90 solve Can you Guys Solve this

Mathematics

1 answer:

nalin [4]3 years ago

5 0

6x-7+9x-8=90
15x=75
x=5

If you want more of an explanation just ask.

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Nookie1986 [14]

Answer:

TELL ME WHY I AM FOCUSED ON THE OTHER PICS MORE THAN THE PROBLEMS

7 0

3 years ago

J(x) = 2x²+8x-5 What is this in vertex form

pav-90 [236]

Answer:

The vertex form parabola y = 2( x+4)² -37

Step-by-step explanation:

Step(i):-

Given parabola equation j(x) = 2x² + 8x -5

Let y = 2x² + 8x -5

⇒ y = 2(x² + 2(4x)+(4)²-(4)²) -5

By using (a + b)² = a² +2ab +b²

y = 2(x+4)²- 32 -5

y = 2 ( x-(-4))² -37

Step(ii):-

The vertex form parabola y = a( x-h)² +k

The vertex form parabola y = 2(x+4)² -37

5 0

3 years ago

Assume that x and y are both differentiable functions of t and find the required values of dy/dt and dx/dt.

qwelly [4]

Answer:

$\displaystyle \frac{dy}{dt}=-\frac{33}{8}$

$\displaystyle \frac{dx}{dt}=\frac{3}{2}$

Step-by-step explanation:

x and y are differentiable functions of t, and we are given the equation:

$xy=6$

First, let's differentiate both sides of the equation with respect to t. So:

$\displaystyle \frac{d}{dt}\left[xy\right]=\frac{d}{dt}[6]$

By the Product Rule and rewriting:

$\displaystyle \frac{d}{dt}[x(t)]y+x\frac{d}{dt}[y(t)]=0$

Therefore:

$\displaystyle y\frac{dx}{dt}+x\frac{dy}{dt}=0$

We want to find dy/dt when x = 4 and dx/dt = 11.

Using our original equation, find y when x = 4:

$\displaystyle (4)y=6\Rightarrow y=\frac{3}{2}$

Therefore:

$\displaystyle \frac{3}{2}\left(11\right)+(4)\frac{dy}{dt}=0$

Solve for dy/dt:

$\displaystyle \frac{dy}{dt}=-\frac{33}{8}$

We want to find dx/dt when x = 1 and dy/dt = -9.

Again, using our original equation, find y when x = 1:

$(1)y=6\Rightarrow y=6$

Therefore:

$\displaystyle (6)\frac{dx}{dt}+(1)\left(-9)=0$

Solve for dx/dt:

$\displaystyle \frac{dx}{dt}=\frac{3}{2}$

5 0

3 years ago

Show (0.004)(3.42) as a fraction multiplication problem and explain why the answer is in the hundredths-thousandths (five decima

Musya8 [376]

4/1000 x 3 42/100 = 4/1000 x 3 420/1000 = 3 1680/1000 = 4 680/1000

7 0

3 years ago

Read 2 more answers

Nevermind i got it its 520!

Anna007 [38]

Answer:

gr8 thx for points btw can i have brainliest

Step-by-step explanation:

5 0

3 years ago