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3 years ago

24-12+8, no thanks :))))))

Mathematics

2 answers:

aksik [14]3 years ago

6 0

Pamdas
× ÷+- so 12+8=20-24=4

Scilla [17]3 years ago

4 0

24-12+8=4.easy!!!!!!!!!!

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Electric charge is distributed over the rectangle 2 ≤ x ≤ 4, 0 ≤ y ≤ 2 so that the charge density at (x, y) is σ(x, y) = 2xy + y

dybincka [34]

Answer:

The total charge on the rectangle is 29.33C

Step-by-step explanation:

Given

σ(x, y) = 2xy + y²

For 2 ≤ x ≤ 4, 0 ≤ y ≤ 2

The total charge on the rectangle is calculated as follows.

Charge, q = ∫∫2xy + y² dydx {0,2}{2,4}

Integrate with respect to y

q = ∫xy² + ⅓y³ dydx {0,2}{2,4}

q = ∫(2²*x + ⅓*2³) dx {2,4}

q = ∫4x + 8/3 dx {2,4}

Integrate with respect to x

q = 2x² + 8x/3 {2,4}

q = (2(4)² + 8(4)/3) - (2(2)² + 8(2)/3)

q = 29.33C

7 0

4 years ago

Read 2 more answers

Which factors of -24 are used to factor x^{2}+2x-24

Vlad [161]

Answer:

Step-by-step explanation:

6 , -4

Reason:

If you add 6 and (-4) , you will get 2 & if you multiply 6 and -4, you will get -24

5 0

3 years ago

If f(x) = 8 -3 and g(x) = 3x2 + x-6, find (f + g)(x).

Marizza181 [45]

Answer:

Step-by-step explanation:

(f+g)(x) basically means to "ADD" f(x) and g(x).

We have

$f(x)=\frac{x}{2}-3$

and

$g(x)=3x^2+x-6$

Now we simply add these two, adding like terms as shown below (and simplify):

$(f+g)(x)=f(x)+g(x)\\=(\frac{x}{2}-3)+(3x^2+x-6)\\=3x^2+\frac{1}{2}x+x-3-6\\=3x^2+\frac{3}{2}x-9$

Correct answer is D

3 0

3 years ago

Sarah’s stands on a ground and sights the top of a steep Clift at a 60 degree angle of elevation she then steps back 50 meters t

SashulF [63]

Answer:

Cliff is 45 m tall.

Step-by-step explanation:

Given:

Height of Sarah = 1.8 m

Angle of elevation = 60°

Angle of elevation 50 m back = 30°

As shown in the figure we have two right angled triangles SPQ and SPR.

Let the height of the cliff be $h$ meters and $h= h_1+h_s$ .

Using trigonometric ratios:

tan (Ф) = opposite/adjacent

In ΔSPQ. In ΔSPR.

⇒ $tan(60) = \frac{h_1}{x}$ ...equation (i) ⇒ $tan (30)=\frac{h_1}{x+50}$ ...equation (ii)

Dividing equation (i) and (ii)

⇒ $\frac{tan(60)}{tan(30)} = \frac{h_1}{x} \times \frac{x+50}{h_1}$

⇒ $3 = \frac{x+50}{x}$

⇒ $3x=x+50$

⇒ $3x-x=50$

⇒ $2x=50$

⇒ $x=\frac{50}{2}$

⇒ $x=25$ meters

To find $h_1$ plugging $x=25$ in equation (i)

⇒ $h_1=x\times tan(60)$

⇒ $h_1=25\times 1.73$

⇒ $h_1=43.25$ meters

The height of the cliff from ground :

⇒ $h= h_1+h_s$

⇒ $h= 43.25+1.8$

⇒ $h=45.05$ meters

The cliff is 45 m tall to the nearest meter.

8 0

4 years ago

Im lost, I don't understand the corolation

elena55 [62]

To solve for the variable "w" you only need to use algebra to get it alone on one side of the equals sign.

$c = a( \frac{w}{150}) \\ \\ \frac{c}{a} = \frac{w}{150} \\ \\ \frac{150c}{a} = w$

7 0

3 years ago