Think about whether these ordered pairs represent a function. Then use the drop-down menus to complete the statement about the ordered pairs. (−2,4),(5,6),(0,1),(8,−7),(9,1)
this(does not/does)represents a function because different(x values/y values)can have the same (x values/y values) HELP MEH

Answer:

E = (28 + 66i) Volts

Step-by-step explanation:

Note that: i = √-1 ; i² = -1

Ohm's law: E = IR

E = (16+ i) (2 + 4i)

Expand the equation.

E = 16x2 + 16x4i + ix2 + ix4i

E = 32 + 64i + 2i + 4i²

E = 32 + 64i + 2i + 4(-1)

E = 32 + 64i + 2i - 4

Collect like terms:

E = 32 -4 + 64i + 2i

E = (28 + 66i) Volts

Answer:

x + 2x + 1/2x = 224

Step-by-step explanation:

x + 2x + 1/2x = 224

3.5x = 224

x= 64

64×2=128

Hen baked 128 cookies on the second day

Answer:

The equation of the hyperbola can be presented as follows;

[tex]\dfrac{\left x \right ^{2}}{12} - \dfrac{\left y \right ^{2}}{24} = 1[/tex]

Step-by-step explanation:

We have the equation of an hyperbola given as follows;

[tex]\dfrac{\left (x - h \right )^{2}}{a^{2}} - \dfrac{\left (y - k \right )^{2}}{b^{2}} = 1[/tex]

The foal length = a² + b² = c²

c = focal length

The directrix = a²/c

The focal point are (h + c, k) and (h - c, k)

Therefore, by comparison with the given focal points, (6, 0) and (-6, 0), we have;

k = 0 and h + c = 6, h - c = -6

Therefore;

6 - c - c = -6

-2·c = -12

c = 6

h = 0

a²/c = 2

a² = 2 × 6 = 12

a = 2·√3

12 + b² = 6²

b² = 6² - 12 = 24

b² = 24

b = 2·√6

The equation of the hyper bola can then be written as follows;

[tex]\dfrac{\left (x - 0 \right )^{2}}{12} - \dfrac{\left (y - 0 \right )^{2}}{24} = 1[/tex]

Which gives

[tex]\dfrac{\left x \right ^{2}}{12} - \dfrac{\left y \right ^{2}}{24} = 1[/tex]

x² - y² = 12

y² = x² - 12.

Answer:

[tex]\dfrac{dV}{dt} =-4 \pi k (\dfrac{3}{4 \pi})^\dfrac{2}{3} }}V^{\dfrac{2}{3}}[/tex]

k = 3.022

Step-by-step explanation:

Given that:

A spherical raindrop evaporates at a rate proportional to its surface area.

The surface area SA of a spherical object is given by the relation:

SA = 4πr²

Write down a differ- ential equation for its volume as a function as a function of time.

So; to differentiate Volume (V) in respect to time (t) ;then:

[tex]\dfrac{dV}{dt} =-k( 4 \pi r^2)[/tex]

Likewise; we know known that the volume of a sphere V = [tex]\dfrac{4}{3} \pi r^3[/tex]

Thus, from above;

[tex]3V = 4 \pi r^3[/tex]

[tex]\dfrac{3V}{4 \pi} = r^3[/tex]

[tex]r^3 = (\dfrac{3}{4 \pi })^{\dfrac{2}{3}}V^{\dfrac{2}{3}}[/tex]

[tex]r^2 = 4 \pi( \dfrac{3}{4 \pi})\dfrac{2}{3}V\dfrac{2}{3}[/tex]

Thus; solving the differential:

[tex]\dfrac{dV}{dt} =-k( 4 \pi * 4 \pi( \dfrac{3}{4 \pi})\dfrac{2}{3}V\dfrac{2}{3})[/tex]

[tex]\dfrac{dV}{dt} =-4 \pi k (\dfrac{3}{4 \pi})^\dfrac{2}{3} }}V^{\dfrac{2}{3}}[/tex]

So;

we are to find the constant proportionality K

If Volume V = 1 cm³ and the time = 10 sec

[tex]\dfrac{1}{10} =-4 \pi k (\dfrac{3}{4 \pi})^\dfrac{2}{3} }}(1)^{\dfrac{2}{3}}[/tex]

0.1 =  - 4π k (0.3848 × 1)

0.1 =  - 4π k × 0.3848

4π k = 0.3848/0.1

4π k  = 3.848

k = 3.848/4π

k = 3.022

Answer: The correct answer is B

Step-by-step explanation: (1/2,-sqrt3/2) just took quiz you’re welcome

By trigonometry functions, the coordinates of the terminal point are (1/2, -√3/2)

The given function is t = 11 pi / 3

Given: t = 11 pi / 3

By the definitions of trigonometry functions, the point P has as coordinates P(x, y).

x=cos(11π/3) and y=sin(11π/3)

Trig table and unit circle give

x= cos(11π/3)=cos(-π/3+4π)

=1/2

y=sin(11π/3)=sin(-π/3+4π)

=-sin(π/3)=-√3/2

P is in Quadrant IV, (1/2, -√3/2) be the coordinates of the terminal point at t = 11π/ 3.

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Answer: 100%

Step-by-step explanation:

Given the following :

Price of antique car in 2020 is 200% of its original price in 1980.

By what percentage did the price increase over this 40-year period?

Let the original price = x

x = price of car in 1980

Price of car in 2020 = 200% of x = 2x

Percentage increase in price is given by:

(increase / original price) × 100%

Increase = (price in 2020 - price in 1980)

[(Price in 2020 - price in 1980) / original price] * 100%

[(2x - x) / x] * 100%

[(2x - x) / x] * 100%

(x /x) * 100%

= 1 × 100%

= 100%

100x%

The percentage that the price increase over this 40-year period is 100%.

Using this formula

Percentage increase=(Current price-Original price)÷Original price × 100%

Let plug in the formula

Percentage increase= (200% of x1-1)/1×100

Percentage increase= 1 × 100%

Percentage increase= 100%

Inconclusion the percentage that the price increase over this 40-year period is 100%.

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Answer:

10g + 6h + 8

Step-by-step explanation:

2(5g+3h+4)

Distribute.

2 × 5g + 2 × 3h + 2 × 4

10g + 6h + 8

Answer:

a)Claims: P>0.5("MOST" of the adult erase their personal information)

b)Statistics test= 4.746

Step-by-step explanation:

we were given {p}=60% =0.60

where n= 563

since most of adults erase all their personal information online, then (p> 0.5

p=0.5

q=1-p=1-0.5=0.5

CHECK THE ATTACHMENT FOR DETAILED EXPLANATION

The value of the statistic test is 4.746 and this can be determined by using the given data.

Given :

A software firm survey of 563 randomly selected adults showed that 60% of them would erase all of their personal information online if they could.

It is given that [tex]\rm \bar{P}[/tex] = 60% = 0.60 and n = 563.

Claim: Most adults would erase all of their personal information online if they could that means (P > 0.5). Therefore:

q = 1 - P = 1 - 0.5 = 0.5

Now, to determine the value of the statistic test, the following formula can be used:

[tex]\rm \dfrac{\bar{P}-P}{\sqrt{\dfrac{Pq}{n}} } = \dfrac{0.6-0.5}{\sqrt{\dfrac{0.5\times0.5}{563}} }=4.746[/tex]

Therefore, the value of the statistic test is 4.746.

For more information, refer to the link given below:

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Answer:

The smallest x-intercept is x = -1, from equation 3.

Step-by-step explanation:

The x-intercept value of a function happens when "y", or in this case f(x), is equal to 0. Therefore we need to analyze each equation by making f(x) = 0 and finding x.

(a) [tex]f(x) = 3x - 9[/tex]

[tex]0 = 3x - 9\\3x = 9\\x = 1[/tex]

(b) [tex]f(x) = 4[/tex]

Since this is a constant function for which f(x) = 4, then there will be no x-intercept.

(c) [tex]f(x) = 3x - 9[/tex]

[tex]0 = \sqrt{x + 1}\\(0)^2 = (\sqrt{x + 1})^2\\0 = x + 1\\x = -1[/tex]

(d) [tex]f(x) = x^2\\[/tex]

[tex]0 = x^2\\x = 0[/tex]

From these options the smallest x-intercept is x = -1.

Answer:

c

Step-by-step explanation:

edge 100%

Respuesta:

71.41 kilogramos

Explicación paso a paso:

En este caso lo que debemos hacer para calcular el peso de los artículos vendidos, es sumar el peso individual de cada artículo, por lo tanto:

Peso total = peso del arroz + peso de la papa + peso del frijol

Ya que tienen la misma unidad de medida, no hay ningún problema para sumar, entonces reemplazamos:

Peso total = 20 + 12.25 + 39.16

Peso total = 71.41

Lo que quiere decir que el peso de los artículos vendidos es de 71.41  kilogramos

Answer:

About 2.72

Step-by-step explanation:

From reading the comments, I suppose you meant v actually means x so:

14 × 14 = 196

196 ÷ 72 ≈ 2.72

Hope this helped! :)

Answer:

Hello!

I'm not sure what the " v " means but I think you meant to put x instead of v

____________________

14 x 14 = 196

196 ÷ 72 = [tex]\frac{49}{18}[/tex]

Step-by-step explanation: Reduce the expression, if possible, by cancelling the common factors.

Hope I got this right.

Answer:

74.22

Step-by-step explanation:

a pencil cup is like a cylinder

A=2πrh+2πr2=2·π·1.75·5+2·π·1.752≈74.22013

hope this helps

correct me if this is wrong

Answer:

Emma can complete the calls alone in 6 days, which means she can complete   [tex]\frac{1}{6}[/tex] of the calls in one day. So, Emma’s rate per day is [tex]\frac{1}{6}[/tex] . Jackson can complete the calls alone in [tex]4[/tex] days, which means he can complete [tex]\frac{1}{4}[/tex] of the calls in one day. So, Jackson’s rate per day is [tex]\frac{1}{4}[/tex] . Because they’re working together, the time, [tex]x[/tex] , is the same for both.

Multiply across the table to find the part of the task each has completed. Use the equation work completed = (rate)(time) to fill in the last column cells.

Step-by-step explanation:

━━━━━━━☆☆━━━━━━━

▹ Answer

-27

▹ Step-by-Step Explanation

9 × -3 = -3 + -3 + -3 + -3 + -3 + -3 + -3 + -3 + -3 + = -27

Hope this helps!

- CloutAnswers ❁

Brainliest is greatly appreciated!

━━━━━━━☆☆━━━━━━━

Answer:

-27

Step-by-step explanation:

First mutiply 9 x -3

[tex]9 * -3=-27[/tex]

Since there is a negative the answer would be negative

[tex]Negative * Postive=Negative[/tex]

Therefore, the answer is -27

Hope this helps! :)

Answer by

Fishylikeswater

The length of PG using the centroid property is 6 unit.

The centroid divides each median into segments in a 2:1 ratio.

This means that the distance from the centroid to the vertex is twice the distance from the centroid to the midpoint of the opposite side.

Given:

JG = 18

As, the centroid divides each median into segments in a 2:1 ratio then

PG:PJ = 1:2

So, the length of PG

= 1/3 * (18)

= 18/3

= 6 unit

Thus, the length of PG  is 6 unit.

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Answer:

B

Step-by-step explanation:

Put x as 1 and the output will be 9.

y = (3x)²

y = (3(1))²

y = 3²

y = 9

True

Answer:

option d is correct answer.

hope it helps..

D. 8.8 cm^3

Step-by-step explanation:

The formula for the volume of a cone is...

[tex]V=\frac{1}{3}\pi r^2h[/tex]

We can plug everything we know into the formula and convert pi to 3.14 since the answer choices aren't in pi.

[tex]V=\frac{1}{3}*( 3.14*1.45*1.45*4 )[/tex]

I prefer to do the 1/3 last, but it is entirely up to you!

Now solve...

[tex]V=\frac{1}{3}*26.4074[/tex]

Divide by 3.

V =

8.8 cm^3

Answer:

Good very good

Step-by-step explanation:

Because my taste buds like it'

Answer:

3

Step-by-step explanation:

Answer:

4/3*PI

OR  4.186 (6 REPEATING0

OR 1.3(3 REPEATING )*PI

Step-by-step explanation:

BECAUSE

THE FORMULA IS 4/3*PI*R^3=V

4/3*3.14*1=V

4/3*PI=V

OR  4.186 (6 REPEATING

OR 1.3(3 REPEATING )*PI

HOPE I HELPED

BRAINLIEST PLS

    -ZYLYNN JADE

Answer:

4.19 in³

Step-by-step explanation:

The volume of a sphere is given by the formula:

so the volume is:

V = [tex]\frac{4}{3}[/tex]*3.14*1³

V= 4.1866 ≈ 4.19 in³

Step-by-step explanation:

that would form a triangle

using tan

TOA tan = opp/adj

tan38 degree = 20/x

tan 38 =0.7813

so 0.7813 = 20/x

=cross multiply

= 0.7813x =20

divide both sides by 0.7813

so 20/0.7813

= 25.5983

which is 3 to the nearest tenth

The height of the tree is 20.6 feet.

To solve problems of heights and distances, we use trigonometric ratios determining the given case by geometric shapes.

We are given the following information: John who is 5 ft. tall is standing at a distance of 20 ft. from a tree, and you measure the angle of elevation to be 38°. We are asked to find the height of the tree.

To solve the problem, we will use heights and distances.

First, we define a figure:

Let AD be John, such that AD = 5 ft.

Let BE be the tree with its height = h ft.

The distance between John and the tree is determined by DE = 20 ft.

We drop a perpendicular from point A to BE at point C.

Now, ADEC is a rectangle. Hence,

CE = AD = 5 ft.

AC = DE = 20 ft.

We join A and B, to complete the right-angled triangle ACB, with ∠ACB = 90°, ∠BAC = 38° (the given angle of elevation).

In ΔACB,

AC = 20 ft. (already derived)

BC = BE - CE = h-5 ft. (∵ BE = height of the tree h, CE = 5, already derived)

Now, in ΔACB,

tan 38° = BC/AC = (h-5)/20

or, h-5 = 20*tan38° = 20*0.781286 = 15.6257

or, h = 15.6 + 5 = 20.6257.

∴ h = 20.6 (correct to the nearest tenth)

So, the height of the tree is 20.6 feet.

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Answer:

The answer is option A.

Step-by-step explanation:

To find the number of girls in the class we must first find the total parts

That's

2 + 7 = 9

In the ratio 7 correspond to girls so the number of girls in the class are

7/9 × 45

= 7 × 5

= 35

Hope this helps you

Answer:

A. 4.50 B. 1 : 3

Step-by-step explanation:

A.

First, think of Toby's money as 1/6x (x referring to the total amount of money) and Daoud's money as 1/2x.

It states that Toby gets 1.50, which means that 1/6x = 1.50.

To find what x is, multiply both sides by 6.

1/6x * 6 = 1.50 * 6

x = 9

Now that we know how much money there is in total, we can solve for Daoud's money. Daoud has 1/2x. We can substitute x for 9 and solve for Daoud's money.

1/2(9)

4.50

Daoud has 4.50.

B.

The problem states that Elsa gets the remaining money.

9 - (1.50 + 4.50)

9 - 6

3

Elsa gets 3.00.

Now, you can use turn solve the ratio of Toby's money and Elsa's money.

1.5 : 3

The problem states that they have to be whole numbers, so you can change the ratio to fit the requirements.

1 : 3

Answer:

r = 64

Step-by-step explanation:

The number of years for the investment plan = 65-23= 32 years

Initial amount= $30000

Final amount= $160000

To find the rate of return

We will use the compound interest formula.

The number of times it was compounded= number of years because it was not compounded monthly.

A= p(1+r/n)^(nt)

160000= 30000(1+r/32)^(32*32)

160000/30000= (1+r/32)^(32*32)

5.333= (1+r/32)^(1024)

1024√5.333= (1+r/32)

1.001636073 = 1 +r/32

2.01636073= r/32

32(1.01636073)= r

64.05= r

Answer/Step-by-step Explanation:

1. 3x - 10 +4 if x = 3

To evaluate, plug in the value of x in the expression given

3(3) - 10 + 4 = 9 - 10 + 4

= 3

2. [tex] \frac{x}{2} + 6x [/tex]

if x = -12

[tex] \frac{(-12)}{2} + 6(-12) [/tex]

- 6 - 72 = - 78

3. 8(x - y), if x = 2, y = 6

8(2 - 6) = 8(-4) = -32

4. x + xy, if x = 3, y = -2.5

3 + (3)(-2.5) = 3 + (-7.5)

= 3 - 7.5 = - 4.5

5. (2x)² + 6, if x = -2

(2*-2)² + 6 = (-4)² + 6

= 16 + 6 = 22

6. 3x + 4y - 3x, if x = 2, y = 4

3(2) + 4(4) - 3(2) = 6 + 16 - 6

= 16

7. [tex] -10x + \frac{4}{x} [/tex]

If x = -2

[tex] -10(-2) + \frac{4}{-2} [/tex]

20 + (-2) = 20 - 2 = 18

8. 3(8x - 10) + 5x, if x = ½

3(8*½ - 10) + 5(½)

3(4 - 10) + 2.5

3(-6) + 2.5 = -18+2.5 = - 20.5 or 20½

9. x + 8y - (x)², if x = -5, y = ¼

-5 + 8(¼) - (-5)² = -5 + 2 - (25)

= -3 - 25 = -28

10. (8x)² + 6x + 2, if x = -3

(8*-3)² + 6(-3) + 2 = (-24)² - 18 + 2

= 576 - 18 + 2 = 560

11. 2x² + 4y² + xy, if x = ½, y = 2

2(½)² + 4(2)² + (½)(2)

= 2(¼) + 4(4) + 1

= ½ + 16 + 1 = ½ + 17 = 17½

12. 8x + 2y, if x = 1.5, y = -2.2

8(1.5) + 2(-2.2)

12 - 4.4 = 7.6

13. [tex] \frac{5}{2}(x - 6) + 4 [/tex]

if x = 8.

[tex] \frac{5}{2}(8 - 6) + 4 [/tex]

[tex] \frac{5}{2}(2) + 4 [/tex]

= 5 + 4 = 9

14. 3x - 8x² + 7, if x = 4.5

3(4.5) - 8(4.5)² + 7

13.5 - 8(20.25) + 7

13.5 - 162 + 7 = -141.5

15. -2x² + 8y, if x = 3, y = -9

-2(3)² + 8(-9)

-2(9) - 72 = - 18 - 72 = 90

16. (-5x)² - 3x + x, if x = -3.5

(-5*-3.5)² - 3(-3.5) +(-3.5)

(17.5)² + 10.5 - 3.5

306.25 + 10.5 - 3.5 = 313.25

Answer: 19 degrees

Step-by-step explanation:

<FOE is the central angle of an arc of 52 degrees and is thus 52 degrees.  Then by supplementary angles <COD is 71 degrees and angle BOA is thus also 71 degrees.  Then by supplementary angles <BOC is 19 degrees and arc BC is thus also 19 degrees.

Hope it helps <3

Answer:

19 degrees

Step-by-step explanation:

Answer:

[tex]\huge\boxed{\dfrac{z^6x^7}{z^5x}=zx^6}[/tex]

Step-by-step explanation:

[tex]\text{Use}\ \dfrac{a^n}{a^m}=a^{n-m}\\\\\dfrac{z^6x^7}{z^5x}=\dfrac{z^6x^7}{z^5x^1}=z^{6-5}x^{7-1}=z^1x^6=zx^6[/tex]

Answer:

[tex]zx^6[/tex]   is the simplified answer.

Step-by-step explanation:

[tex]\frac{z^6x^7}{z^5x}[/tex]

[tex]\mathrm{Apply\:exponent\:rule}:\quad \frac{x^a}{x^b}=x^{a-b}\\\\=\frac{x^7z^{6-5}}{x}\\\\=\frac{zx^7}{x}\\\\\mathrm{Cancel\:the\:common\:factor:}\:x\\\\=zx^6[/tex]

Best Regards!

Answer:

A.) Area of Big triangle - Square

Step-by-step explanation:

The triangle would have been all white if the square were not shaded.  So the square must be subtracted from the area of the triangle.  See diagram below.

Answer:

68.26

Step-by-step explanation:

The symbol σ represents standard deviation. 1 standard deviation (in both directions) under a normal distribution= 68.26

Answer:

68%.

Step-by-step explanation:

The 68-95-99.7 rule (also know as the Empirical Rule) states that 68% of the data lies within 1 standard deviation of the mean. 95% of the data lies within 2 standard deviations of the mean. 99.7% of the data lies within 3 standard deviations of the mean.

According to the diagram, the area shaded shows data within 1 standard deviation of the mean (one standard deviation to the left, and one to the right). That means that 68% of the data is within the shaded area.

Hope this helps!