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3 years ago

Plz help as quick as possible!

Mathematics

2 answers:

Zigmanuir [339]3 years ago

7 0

65% maybe wrong tell me if I am

kompoz [17]3 years ago

6 0

average =65%

average = (60+70)/(100+100)*100

= 130/200*100

= 65%

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What is the area of the figure below? Equation below v

ladessa [460]

Answer:

68 in^2

Step-by-step explanation:

6 0

3 years ago

Shane rare book collection contains 40 books. He donates 20% of his books to the national libary. he sells 1/4 of his books to a

Amiraneli [1.4K]

Hopefully this could help you

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3 years ago

Help asap! ill give the best to person who explains it clearly

Phantasy [73]

Answer:

The answer is D.

Step-by-step explanation:

First, you have to find the area of circle using the formula :

A = π × r²

A = π × 3²

A = 9π

Given that PHU is an equilateral triangle so all sides have a degree of 60°. Next, you have to find the area of minor sector of P and U by using the formula :

A = (θ/360) × π × r²

A = (60/360) × π × 3²

A = 1.5π

Lastly, you have to subtract the area of sector from the area of circle in order to find the area of shaded region :

A = (9π × 2) - (1.5π × 2)

A = 18π - 3π

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6 0

3 years ago

Can someone please help me

dusya [7]

$-\frac{1}{3}m+2 = -1 =>NO\\-2(-4m-6.4) = 44.8 => YES\\8m-5-2m +1 = 20 =>YES\\7m+6 = 9m-2 => YES$

Step-by-step explanation:

First of all, we will find the solution of the given equation

So,

Given equation is:

$3m = 36-6m$

Adding 6m on both sides

$3m+6m = 36-6m+6m\\9m = 36$

Dividing both sides by 9

$\frac{9m}{9} = \frac{36}{9}\\m = 4$

In order to check, if the solution is the solution of given options, we will put the solution in the equation, if both sides of equations are equal then the solution belongs to the equation.

So,

For $-\frac{1}{3}m+2 = -1$

Putting m=4

$\frac{-1}{3}(4)+2 = -1\\\frac{-4}{3}+2 = -1\\\frac{-4+6}{3} = -1\\-\frac{2}{3} \neq -1$

For $-2(-4m-6.4) = 44.8$

Putting m=4

$-2[-4(4)-6.4]=44.8\\-2(-16-6.4) = 44.8\\-2(-22.4) = 44.8\\44.8 = 44.8$

For $8m-5-2m +1 = 20$

Putting m=4

$8m-5-2m +1 = 20\\6m-4 = 20\\6(4) -4 = 20\\24-4 = 20\\20 = 20$

for $7m+6 = 9m-2$

Putting m = 4

$7(4) +6 = 9(4) - 2\\28+6 =36-2\\34=34$

Keywords: Equations, linear equation

Learn more about linear equation at:

#LearnwithBrainly

8 0

4 years ago

Compute single integral of y^2 dx +x dy where C is the circle x^2+y^2=16 oriented positively

mixas84 [53]

Parameterize $C$ by

$\vec r(t)=\langle x(t),y(t)\rangle=\langle4\cos t,4\sin t\rangle$

with $0\le t\le2\pi$ . Then

$\displaystyle\int_Cy^2\,\mathrm dx+x\,\mathrm dy=\int_0^{2\pi}\langle y(t)^2,x(t)\rangle\cdot\left\langle\frac{\mathrm dx(t)}{\mathrm dt},\frac{\mathrm dy(t)}{\mathrm dt}\right\rangle\,\mathrm dt$

$=\displaystyle\int_0^{2\pi}\langle16\sin^2t,4\cos t\rangle\cdot\langle-4\sin t,4\cos t\rangle\,\mathrm dt$

$=\displaystyle16\int_0^{2\pi}(\cos^2t-4\sin^3t)\,\mathrm dt=\boxed{16\pi}$

7 0

3 years ago