Can someone help me with these math quetions please

Answer: The sum of the exterior angles of a 54-gon should be 360°.

Step-by-step explanation:

A polygon is a closed figure made up of straight lines like triangle (3-gon) , quadrilateral (4-gon) , square(4-gon), pentagon (5-gon) , octagon(8-gon) etc.

The sum of exterior angles of any polygon with n sides ( or n-gon ) is always 360 degrees.

A 54-gon is a polygon with 54 sides.

Therefore , the sum of the exterior angles of a 54-gon should be 360°.

Answer:

73, 66, 59

Step-by-step explanation:

Each number has a value of 7 difference

Answer:

73, 66, 59

Step-by-step explanation:

Answer:

20 divided by 10 is 2 so for every 2 miles it travels it uses 1 gallon of gasoline. 20 + 14 is 34 so you divide 14 by 2 to get 7. then you add 10+7 to get 17. it will take 17 gallons of gasoline to go 34 miles

Step-by-step explanation:

Answer:

i need help

Step-by-step explanation:

Answer:

is 5

Step-by-step explanation:m

..

Answer: 38 25/32

Step-by-step explanation:

Answer:  (1241/32) ÷ 2 = 19.390625

Step-by-step explanation:

Answer:

7.5 miles per minute

Step-by-step explanation:

Answer:

[tex]k = 5[/tex]

Step-by-step explanation:

Given

[tex]g(x) = f(x) + k[/tex]

Required

Determine the value of k

First, we need to determine the equation of g(x)

Start by calculating the slope (m)

[tex]m = \frac{y_2 - y_1}{x_2 - x_1}[/tex]

Where x and y are two corresponding values:

[tex](x_1,y_1) = (1,1)[/tex]

[tex](x_2,y_2) = (0,-3)[/tex]

The slope (m) is:

[tex]m = \frac{-3- 1}{0 - 1}[/tex]

[tex]m = \frac{-4}{- 1}[/tex]

[tex]m = 4[/tex]

The equation is calculated using:

[tex]y - y_1 = m(x - x_1)[/tex]

Where

[tex]m = 4[/tex] and [tex](x_1,y_1) = (1,1)[/tex]

[tex]y - 1 = 4(x - 1)[/tex]

[tex]y - 1 = 4x - 4[/tex]

Make y the subject of formula

[tex]y = 4x - 4 + 1[/tex]

[tex]y = 4x - 3[/tex]

So:

[tex]f(x) = 4x - 3[/tex]

Next, we determine the equation of f(x)

Start by calculating the slope (m)

[tex]m = \frac{y_2 - y_1}{x_2 - x_1}[/tex]

Where x and y are two corresponding values:

[tex](x_1,y_1) = (-1,-2)[/tex]

[tex](x_2,y_2) = (0,2)[/tex]

The slope (m) is:

[tex]m = \frac{2- (-2)}{0 - (-1)}[/tex]

[tex]m = \frac{2+2}{0+1}[/tex]

[tex]m = \frac{4}{1}[/tex]

[tex]m = 4[/tex]

The equation is calculated using:

[tex]y - y_1 = m(x - x_1)[/tex]

Where

[tex]m = 4[/tex] and [tex](x_1,y_1) = (-1,-2)[/tex]

[tex]y - (-2) = 4(x - (-1))[/tex]

[tex]y + 2 = 4(x +1)[/tex]

[tex]y + 2 = 4x +4[/tex]

Make y the subject of formula

[tex]y = 4x + 4 - 2[/tex]

[tex]y = 4x + 2[/tex]

So:

[tex]g(x) = 4x + 2[/tex]

Recall that

[tex]g(x) = f(x) + k[/tex]

Make k the subject

[tex]k = g(x) - f(x)[/tex]

Substitute values for g(x) and f(x)

[tex]k = 4x + 2 - (4x - 3)[/tex]

[tex]k = 4x + 2 - 4x + 3[/tex]

[tex]k = 4x - 4x+ 2 + 3[/tex]

[tex]k = 5[/tex]

The transformation that maps f into g is a translation transformation,

involving the addition of k to the value of f(x).

Reasons:

Points on the graph of g(x) are; (0, -3) and (0, 1)

[tex]\mathrm{The \ slope \ of \ the \ graph \ of \ g(x)} =\dfrac{-3 - 1}{0 - 1} = 4[/tex]

The equation of g(x) is; y - (-3) = 4·x, which gives;

y = 4·x - 3

The y-intercept = -3

Points on the graph of f(x) are; (-1 -2) and (0, 2)

[tex]\mathrm{The \ slope \ of \ the \ graph \ of \ f(x)} =\dfrac{-2 - 2}{-1 - 0} = 4[/tex]

The equation of f(x) is; y - (-2) = 4·(x - (-1)), which gives;

y = 4·x + 4 - 2 = 4·x + 2

The y-intercept = 2

The slopes of the graphs of f(x) and g(x) are equal, therefore, f(x) ║ g(x)

The difference or the transformation that takes the y-intercept of f(x) to the

y-intercept of g(x) is; k = y-intercept(g(x)) - y-intercept(f(x)) = -3 - 2 = -5

Therefore, k = -5

Which gives;

g(x) = f(x) - 5

The value of k that transforms f into g is; k = -5

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Answer:

x=-1.5

Step-by-step explanation:

Answer:

B) X=4

Step-by-step explanation:

Since opposite sides of a rectangle are equal that means line AD and line BC are equal to eachother

8x-12=20

+12     +12

8x=32

/8     /8

x=4

Answer:

kjjhgyufg

Step-by-step explanation:

Answer:

RST is an isosceles triangle

Step-by-step explanation:.

Required

Determine what type of triangle, is RST.

First, we need to determine the angles in RST

Angle on a straight line is 180°.

So, if <mTS = 130°

Then,

<STR = 180° - 130°

<STR = 50°

Similarly,

<TSR = 180° - 130°

<TSR = 50°

The sum of angles in a triangle is 180°.

So:

<TSR + <STR + <TRS = 180°

50 + 50 + <TSR = 180°

100 + <TSR = 180°

<TSR = 180° - 100°

<TSR = 80°

Hence, the three angles of the triangle are: 50°, 50° and 80°

When just two angles of a triangle are equal; such triangle is referred to as an isosceles triangle

Hence, option A answers the question.

Answer: 14 days

Step-by-step explanation:

352/24= 14.66666667

So it can feed her dog for 14 full days

Answer:

Null hypothesis is rejected. Standard deviation is > 8 miles per hour

Step-by-step explanation:

σ [Population standard deviation] = 8 , s [sample standard deviation] = s

n [no of items] = 8

H0 [Null] : σ = 8 ; H1 [Alternate - Right Tail] : σ > 8

χ2 = (n - 1) . s^2 / σ^2

= 49 x (10.5)^2 / 82 = 5402.25 / 64

χ2 = 84.410

df [degree of freedom] = n -1 = 50 - 1 = 49

P value (χ^2 49 > 84.410) = 0.00125

p = 0.0013

p < α ie 0.05

So, H0 is rejected

Hence we state that standard deviation is > 8 miles per hpur

Answer:

Step-by-step explanation:

36 cookies = 1.5 times 24 cookies. therefore 1.5 times ¾ c of sugar will be required. Total sugar needed for 36 cookies is 9/8 c or 1.125 c.

Answer: 6.6

Step-by-step explanation:

Ayo!!

First you use the formula SF=N/O. The new is the big triangle. The Old is the small triangle. Next you tick the sides of each triangle. So lets say 4.1 will be 1 tick and 2.2 will be 2 ticks. Now the old triangle is done now to the new triangle. 12.3 is the 1 tick and x is the 2 ticks.

Lets set up the formula. N-/N--= O-/O--= 12.3/x and 4.1/2.2. Now u cross multiply. 4.1x=12.3*2.2=4.1x=27.06. Then you divide 4.1x by 4.1 and 27.06 by 4 aswell. 4.1x divided by 4.1 cancel each other out so you are left with 27.06 divided by 4.1 and that equals 6.6. So the answer is 6.6.

PS: If i did the new and old triangles wrong just reverse them and just do it like I explained it.

Hope this helped! :)

Answer:

6.6

Step-by-step explanation:

i took the test

Answer:

9/20 or 0.45

Step-by-step explanation:

we multiply them

3×3/4×5

9/20

or 0.45

Answer:

-8

Step-by-step explanation:

Answer:32

Step-by-step explanation: (2+3x)= 98 then solve

Answer: Let them start off with a certain amount of money. So before they make a move they would have some points ahead of time.

Step-by-step explanation: Hope this helped!! :)

Well, you can actually increase the number of points for those sections and spread them across the sections so that as the players get in the long run, some points will be available for them.

Video game refers to a device which is electronically controlled and played and involves the controlling of images displayed on the screen. Video games has really improved as technology keep advancing.

Thus, from the question above, if players will not lose points at the long run, then it's necessary points need to increase at the long run.

Learn more about video game on https://brainly.com/question/908343

#SPJ2

Let them start off with a certain amount of money. So before they make a move they would have some points ahead of time.

=−640x10+1280x9+19904x8−40728x7−144488x6+323904x5−162304x4+1024x3+2048x2

step by step

(2x+8x2+3x−4x(x−4)(x−1)(20)x+4)(2)(x+4)(x−4)(2)x(x−1)(2)x(x+4)

=((2x+8x2+3x−4x(x−4)(x−1)(20)x+4)(2)(x+4)(x−4)(2)x(x−1)(2)x)(x+4)

=((2x+8x2+3x−4x(x−4)(x−1)(20)x+4)(2)(x+4)(x−4)(2)x(x−1)(2)x)(x)+((2x+8x2+3x−4x(x−4)(x−1)(20)x+4)(2)(x+4)(x−4)(2)x(x−1)(2)x)(4)

=−640x10+3840x9+4544x8−58904x7+91128x6−40608x5+128x4+512x3−2560x9+15360x8+18176x7−235616x6+364512x5−162432x4+512x3+2048x2

=−640x10+1280x9+19904x8−40728x7−144488x6+323904x5−162304x4+1024x3+2048x2

Answer:

Positive

Step-by-step explanation:

the line isn’t in the negative side (going towards the right) so it’s positive

Answer:

Around 80 students

Step by step explaining:

My big brain

Answer: 85% because 1 dime = 10 cent. 10x8=80

80+5=85

85% of 100

Step-by-step explanation:

Answer:

y^2 + 7y - 8

Step-by-step explanation:

(y + 8)(y - 1)

y^2 -1y + 8y - 8

y^2 +7y - 8

Answer:

y²+7y-8

Explanation:

y times y equals y²

y times -1 equals -1y

8 times y equals 8y

8 times -1 equals -8

-1y combines with 8y to make 7y

Put all values in decreasing order

Answer:

You will need to invest $24,867.52 at the beginning to reach the future value of $30,000.00.

Step-by-step explanation:

a) Data and Calculations:

Future value for the purchase of a car = $30,000

Interest rate = 4.7%

Monthly interest = 0.39167% (4.7%/12)

Period of interest = 48 months (12 * 4)

FV (Future Value) $30,000

PV (Present Value) $24,867.52

N (Number of Periods) 48.000

I/Y (Interest Rate) 0.392%

PMT (Periodic Payment) $0.00

Starting Investment $24,867.52

Total Principal $24,867.52

Total Interest $5,132.48

Given: ∠XAM = ∠YBM = 90°    and     AM = BM

To prove: BX ≅ AY

Proof:

In the triangle XAM and BYM:

From the ASA rule of congruency, we can say that: ΔXAM ≅ ΔYBM

Since ΔXAM ≅ ΔYBM: We can say that XM ≅ MY     [CPCT - Common Part of Congruent triangles]

In the Triangle AMY and XMB:

From the SAS rule of congruency, we can say that: ΔAMY ≅ ΔXMB

Since ΔAMY ≅ ΔXMB: We can finally say that BX ≅ AY    [CPCT]

Hence Proved!

Answer:

A) 25

B) 4

C) 0.25

Thank you and please rate me as brainliest as it will help me to level up

Answer:

300

Step-by-step explanation:

This is a place value problem.

 The given figure is;

                14, 397:

Pronounced as;

Fourteen thousand, three hundred and ninety seven:

          14, 397;

                     10 000     ten thousand

                       4000      four thousand

                          300      three hundred

                            90       ninety

                              7         seven

The place value of 3 is hundreds.

Answer:

Step-by-step explanation:

$19 increase is about 31%

62*31%= 19.22

30% increase is $18.60 increase