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3 years ago

Please help meeeeeeeeeee!

Mathematics

1 answer:

aleksandr82 [10.1K]3 years ago

8 0

0.86602540378 is the sign of 60 degrees

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Solve the system by substitution 6x-2y=26 and -y+3=x

gregori [183]

The answer would be (4,-1)
Hope this helped! :)

7 0

3 years ago

The dimensions of the scale drawing of a rectangle are 8cm and 11cm. If the scale factor is 4, what is the length of the origina

jeyben [28]

Answer:

Length of the original rectangle is 2.75 cm

Step-by-step explanation:

The dimensions of the scale drawing of rectangle are 8 cm and 11 cm respectively.

This implies that the width of the rectangle is 8 cm while the length of the rectangle is 11 cm.

The scale factor is given as 4. This means that the dimensions of the original rectangle are 1/4 times the given dimensions.

So the length of the original rectangle = $\frac{1}{4}*11$

= $2.75$

6 0

3 years ago

In Exercise find the derivative of the functions.<br> f(x) = (4x - 3)(x2 + 9)

pashok25 [27]

Answer: $f'(x)=12x^2 - 6x+36$

Step-by-step explanation:

According to the product rule of derivatives.

$f'(x)=u'(x)v(x)+u(x)v'(x)$

The given function : $f(x) = (4x - 3)(x^2 + 9)$

here , $u(x) = 4x - 3$ and $v(x)=x^2 + 9$

Differentiate both sides with respect to x, we get

$u'(x) = 4+0=4$ and $v(x)=2x +0=2x$

$[\because \dfrac{d(ax)}{dx}=a\ , \dfrac{d(a)}{dx}=0 \ \&\ \ \dfrac{d(x^n)}{dx}=nx^{n-1}]$

Then, Tge derivative of withe respect to x will be :

$f'(x)=u'(x)v(x)+u(x)v'(x)$

$=4(x^2 + 9)+( 4x - 3)(2x)$

$=4x^2 +36+8x^2 - 6x$

$=12x^2 - 6x+36$

Hence, the derivative of the function is $f'(x)=12x^2 - 6x+36$ .

7 0

4 years ago

I need help ASAP!! PLEASE EXPLAIN YOUR ANSWER

Jlenok [28]

Answer:

Step-by-step explanation:

5 0

3 years ago

100 POINTS!!!

Brums [2.3K]

Answer: x = 4

Step-by-step explanation:

2(x+1)=10

Distributive properties

a*(b+c)=(a*b)+(a*c)

Using distributive properties

Then

2*(x+1)=(2*x)+(2*1)

2*(x+1)=2x+2

Now, commutative properties

a*b=b*a

Addition is cumulative

a+(-b)=(-b)+a

Therefore applying to 2x+2

2x+2+(-2)=2x+(-2)+2

Then, applying to the equation

2x+2+(-2)=10+(-2), +×-=-

2x+2 -2=10-2

2x=8

Using division properties

ax=b

If a is none zero

Then ax/a=b/a

Therefore x=b/a

Applying that to 2x=8

2x=8. Divide both side by 2 which is none zero

2x/2= 8/2

x=4

Option B

Subtraction Property of equality

please click thanks and mark brainliest if you like :)

7 0

3 years ago