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3 years ago

8 is what percent of 64

Mathematics

2 answers:

MArishka [77]3 years ago

6 0

Hello,

$64* \frac{x\%}{100\%} =8\\\\64* \frac{x}{100} =8\\ \\ x= \frac{8*100}{64}\\ \\ \boxed{x=12.5\%}$

Pavel [41]3 years ago

3 0

percent of 64 is 8 means number/100 * 64 = 8.n/100 * 64 = 8n/100 = 8/64n = 8*100/64 = 25/2 = 12.58 is 12.5% of 64

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Hi please help me thanksss pls provide workings too thanks :)

anygoal [31]

Step-by-step explanation:

Search for questions & chapters

Class 11

>>Maths

>>Trigonometric Functions

>>Trigonometric Equations

>>Solve for x: sin x + sin 2x...

Question

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Solve for x:sinx+sin2x+sin3x=cosx+cos2x+cos3x in the interval 0≤x≤2π.

Medium

Solution

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We write the given equation as

(sinx+sin3x)+sin2x=(cosx+cos3x)+cos2x

or 2sin2xcosx+sin2x=2cos2xcosx+cos2x

or sin2x(2cosx+1)=cos2x(2cosx+1)

or (sin2x−cos2x)(2cosx+1)=0

∴sin2x−cos2x=0 or 2cosx+1=0

If sin2x−cos2x=0, then tan2x=1,

Hence 2x=nπ+π/4

or x=(4n+1)

.(1)

If 2cosx+1=0, then cosx=−1/2 (2)

∴x=2nπ±

2π

or x=

6n±2

We seek values of x in the interval 0≤x≤2π

In this interval (1) gives

x=π/8,5π/8,9π/8,13π/8. (n=0,1,2,3)

and (2) gives x=2π/3,4π/3. (for n=0,1)

Thus we get the answer

x=π/8,5π/8,2π/3,9π/8,4π/3,13π/8.

4 0

2 years ago

A ball is thrown and the path of the ball is represented by the equation y = -x2 + 7x + 7. What is the rate of change between x

frozen [14]

Answer: I’m not sure I’m sooo sorry

3 0

3 years ago

Will mark brainliest if you show ur work

Tanzania [10]

Answer:

$\boxed{\bold{One \ Solution}}$

Step-by-step explanation:

Solve equation to find answer(s)

Combine: 6z - 3z = 3z

$\bold{3z-7=-2+3}$

Add: -2 + 3 = 1

$\bold{3z-7=1}$

Add 7 to both sides:

$\bold{3z-7+7=1+7}$

Simplify:

$\bold{3z=8}$

Divide both sides by 3:

$\bold{\frac{3z}{3}=\frac{8}{3}}$

Simplify:

$\bold{z=\frac{8}{3}}$

- M -

8 0

3 years ago

QUICK Find the area of the shaded region. Use 3.14 for pi.

ivolga24 [154]

Answer:

The shaded region is $353.25m^2$ .

Step-by-step explanation:

The area of a circle is defined by the multiplication of the square of its radius, or half its diameter, by pi, or simply $A=\pi r^2$ .

15m is the radius of the large circle, and also the diameter of the smaller circles.

The area of the shaded region will be the subtraction of the area of the two smaller circles from the area of the larger circle.

As such:

$A=\pi(15)^{2}-2(\pi(\frac{15}{2} )^{2})\\\\A=(3.14)(15)^{2}-2(3.14)(\frac{15}{2} )^{2}\\A=706.5-353.25\\A=353.25$

4 0

3 years ago

Read 2 more answers

Solve the equation −2w+4=−12. URGENT Solution

VMariaS [17]

Answer:

The solution is w=8

Step-by-step explanation:

we have

-2w+4=-12

Solve for w

That means -----> isolate the variable w

Subtract 4 both sides

-2w+4-4=-12-4

-2w=-16

Divide by -2 both sides

-2w/-2=-16/-2

w=8

7 0

3 years ago