hELP ME PLEASEEEE I BEG YOUUU

Answer:

Step-by-step explanation:

A figure in the flag has rotational symmetry if the figure can be mapped onto itself by a rotation between 0° and 360° about the center of the figure.

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An algebraic expression to show representatives r, the students will have in any year is r=(a+b+c+d+e)/50.

An expression is combination of variables, numbers and operators.

Given, that school district can send a representative to the state spelling bee for every 50 students in the school district that year.

There are 5 schools woth a b c d e students respectively.

We need to find the algebraic expression to show how many representatives r, the students will have in any year.

r=(a+b+c+d+e)/50

THe above expression is used to represent the representives.

Hence, (a+b+c+d+e)/50 is an algebraic expression to show representatives r, the students will have in any year

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Answer: C. not given

Step-by-step explanation:

formula for volume of sphere: V=(4/3)πr³

V=(4/3)πr³

V=(4/3)(3.14)(3)³

V=(4/3)(3.14)(27)

V=113 in³

Answer:

C. Not given

V≈ 113 in³

Step-by-step explanation:

The volume of a sphere can be found using the following formula.

\(V= \frac{4}{3} \pi r^3\)

We know the radius is 3 inches and we are using 3.14 for pi. Therefore, we can substitute \(3 in\) in for \(r\) and \(3.14\) in for \(\pi\)

\(V= \frac{4}{3} *3.14* (3 in)^3\)

Evaluate the exponent first.

(3 in)³=  3 in * 3 in * 3 in = 9 in² * 3 in = 27 in³

\(V= \frac{4}{3} *3.14* 27 in^3\)

Multiply 3.14 and 27 in³

\(V= \frac{4}{3} * 84.78 in^3\)

Multiply 4/3 and 84.78 in³

\(V= 113.04 in^3\)

Round to the nearest cubic inch. The 0 in the tenth place tells us to leave the 113 as is.

\(V= \approx 113 in^3\)

Since 113 cubic inches is not an answer choice given, the correct answer is C. not given

Answer:

Step-by-step explanation:

Following changes will be there when the figure is transformed by the given rules.

1). Rule for transformation has been given as,

   (x, y) → (x, -y)

   Reflection across x axis.

2). (x, y) → (-x, -y)

   Rotation of 180° about the origin.

3). (x, y) → (x - 4, y)

   Shifted 4 units left horizontally.

4). (x, y) → (x, y + 3)

   Shifted vertically up by 3 units

5). (x, y) → (x - 1, y + 4)

   Shifted 1 units left horizontally and 4 units up vertically.

6). (x, y) → (4x, 4y)

   Dilated by 4 units.

Answer:

4a^2+4ab+b^2

Step-by-step explanation:

To find the square we multiply the expression with itself

(2a+b)×(2a+b) = 4a^2+4ab+b^2

Answer: Half of them are even and half of them are odd.

Step-by-step explanation:

The even numbers are 6, 12, 18, 24, and 30. An even number is defined as a number that is divisible by 2, meaning it has no remainder when divided by 2. For example, 6 divided by 2 equals 3 with no remainder, so 6 is even.

The odd numbers are 3, 9, 15, 21, and 27. An odd number is defined as a number that is not divisible by 2, meaning it has a remainder of 1 when divided by 2. For example, 9 divided by 2 equals 4 with a remainder of 1, so 9 is odd.

Therefore, out of the given numbers, half of them are even and half of them are odd.

________________________________________________________

Answer:

Step-by-step explanation:

\(x^{2} + 6x-6= 10\\x^{2} +6x-16=0\\x^{2} -2x+8x-16=0\\x(x-2)+8(x-2)=0\\(x-2)(x+8)=0\\x = 2\\or\\x = -8\)

Answer:

X = 2 and X = -8

Step-by-step explanation:

X2 + 6X - 6-10 = 0 ....... when +10 pass the equality sign it will become -10

X2 + 6X -16 =0

here we need to find if there are two numbers there sum is +6 and there product is -16.

here we need to find if there are two numbers there sum is +6 and there product is -16.The two numbers are -2 and +8

-2+8= +6

-2*8= -16

( X - 2 ) * ( X + 8 ) =0

X - 2 = 0 ...... when -2 pass equality sign it will become+2

X = 2

X + 8 =0 ..... when +8 pass equality sign it will become -8

X = -8

Answer:

C. 1.35 M

I hope it helps...

Answer:

D, g(x) = 1/4 x^2

Step-by-step explanation:

You can try plugging in the x and y values into each equation. The answer to this would be D, where if you plug in 2 as the x value, you get 1/4 * 4 which equals 1. This also makes sense because 2x would have a narrower curve while 1/2x would have a wider curve.

Answer:

x=18.5

u gotta do 3x+2=x+49

combine the like terms and it becomes 2x=37 then divide by 2 u get 18.5

plug it in as x and check if it's right

Answer:

1, 2, 3 are correct

Step-by-step explanation:

I got lazy and just graphed it

The correct statements are 1,2 and 3.

"The vertex of function g is 4 units to the left of the vertex of function f."

"The vertex of function g is 2 units below the vertex of function f."

"Function opens in the opposite direction of function f."

In algebra, a quadratic function, a quadratic polynomial, a polynomial of degree 2, or simply a quadratic, is a polynomial function with one or more variables in which the highest-degree term is of the second degree.

Here we have the two quadratic functions:

f(x) = 4(x - 3)²+ 6

g(x) = -2(x + 1)²+ 4

The x-value of the vertex is the value of x such that the first term becomes equal to zero, so for f(x) the vertex is at x = 3, and the y-value of the vertex is:

f(3) = 0 + 6 = 6

So the vertex is (3, 6)

For g(x) we can see that the vertex is at x = -1, and:

g(-1) = 0 + 4=4

So the vertex is at (-1, 4)

Also, you can see that for g(x) and f(x) the leading coefficients are of different signs. Meaning that f(x) opens upwards and g(x) opens downwards.

Hence, options 1,2 and three are correct answers.

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Answer:

1) r = 32

2) symbol is '÷'

3) h = 15/19

Step-by-step explanation:

Answer:

XYZ = LMN

Y = M

X = L

XZ = LN

Step-by-step explanation:

Y = 86, M = 86, M = Y

X = 38,  L = 38, X = L

Z = 56, N = 56, Z = N

A,B,C,and F I just did this problem on edge

The value of the expression 4 1/5 ÷ 2 1/4 will be -28/15. Then the correct option is E.

The analysis of mathematical representations is algebra, and the handling of those symbols is logic.

The mixed fraction numbers are given below.

- 4 1/5 and 2 1/4

The mixed fraction number is converted into a fraction number.

-4 1/5 = -21/5

2 1/4 = 9/4

Then the division of the fraction numbers will be

⇒ -(21/5) ÷ (9/4)

⇒ -(21/5) · (4/9)

⇒ -28/15

Then the value of the expression 4 1/5 ÷ 2 1/4 will be -28/15.

Then the correct option is E.

The missing option will be negative 28 over 20.

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Answer:

-0.553

Step-by-step explanation:

First we convert the fraction into a decimal: -11/40 = -0.275

Then, add both numbers because when you subtract a negative from a positive, you are basicaly adding the numbers.

-0.275- 0. 278= -0.553

Have a great day!

Answer:

37.5 in^2

Explanation:

Given:

To find:

The area of the trapezoid

We'll use the below formula to determine the area(A) of the given trapezoid;

Length of short base of the trapezoid = 5 in

Length of long base of the trapezoid = 10 in

Height of the trapezoid(h) = length of short base = 5 in

Let's go ahead and substitute the given value into the equation and solve for A;

So the area of the figure is 37.5 in^2

The function that is decreasing on the same interval as the given function f(x) is h(x) = 2x^2 + 8x + 3.

To determine if a function is increasing or decreasing, we look at the sign of its derivative. If the derivative is positive, the function is increasing, and if the derivative is negative, the function is decreasing.

Taking the derivative of h(x) with respect to x, we get h'(x) = 4x + 8. To find the interval on which h(x) is decreasing, we need to find the values of x for which h'(x) < 0.

Setting h'(x) < 0, we have 4x + 8 < 0. Solving this inequality, we find x < -2.

Therefore, h(x) is decreasing for x < -2. Since the interval where h(x) is decreasing matches the interval for the given function f(x), we can conclude that h(x) = 2x^2 + 8x + 3 is the function that is decreasing on the same interval as f(x).

Overall, the function h(x) = 2x^2 + 8x + 3 is decreasing on the interval x < -2, which aligns with the interval of the given function f(x).

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Answer:

The smaller number in 0.01

Step-by-step explanation:

To find this answer, just take the fraction and find the quotient of both numbers.

1.789/178 = 0.01005056179

Now take the quotient and compare it to 0.05.

Is 0.01 larger or 0.05 - the answer is 0.01.

The radius of the gear should be approximately 2.8644 inches.It is important to note that when making calculations involving units, we need to make sure that all units are consistent and convert them when necessary. In this case, we converted the answer from feet to inches to match the given unit.

To find the radius of the gear that will pull a chain at 60 ft/min when rotating at 40 rev/min, we can use the formula:

chain speed = 2 x pi x radius x rotational speed

where pi is a mathematical constant approximately equal to 3.14.

We know that the chain speed is 60 ft/min and the rotational speed is 40 rev/min, so we can substitute those values into the formula:

60 = 2 x 3.14 x radius x 40

Simplifying the equation, we get:

radius = 60 / (2 x 3.14 x 40)

radius = 0.2387 ft

To convert feet to inches, we can multiply the answer by 12:

radius = 0.2387 x 12 = 2.8644 inches.

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Answer:

140

Step-by-step explanation:

2{ 2[24 + 4(9)-25]}

2{ 2[24 + 36-25]}

2{ 2[35]}

2(70)

140

Answer: the slope is 2

Step-by-step explanation:

It goes up 2 and over 1

y/x

rise over run= rise/run

Explanation:

Let x be the unknown angle we want to find.

Let y be adjacent and supplementary to x. This means x+y = 180

Let z also be adjacent and supplementary to x. So x+z = 180 also

Subtracting the two equations leads to y-z = 0 and y = z. So effectively we've proven the vertical angle theorem.

Since the supplementary angles to x add to 100, we know that y+z = 100. Plug in y = z and solve for z

y+z = 100

z+z = 100

2z = 100

z = 100/2

z = 50

Therefore,

x+z = 180

x+50 = 180

x = 180-50

x = 130

Answer:

130°

Step-by-step explanation:

Let x be the unknown angle we want to find.

Let y be adjacent and supplementary to x. This means x+y = 180

Let z also be adjacent and supplementary to x. So x+z = 180 also

Subtracting the two equations leads to y-z = 0 and y = z. So effectively we've proven the vertical angle theorem.

Since the supplementary angles to x add to 100, we know that y+z = 100. Plug in y = z and solve for z

y+z = 100

z+z = 100

2z = 100

z = 100/2

z = 50

Therefore,

x+z = 180

x+50 = 180

x = 180-50

x = 130

Answer:

A=146

Step-by-step explanation:

0.15*146=21.9

28.1+21.9=50

Rounded to the nearest hundredth, the value of y at \(x = 7\) is approximately \(12.78\), according to the concept of linear regression line.

To find the linear regression line for the given data, we can use statistical software or a calculator. The equation of the linear regression line is of the form \(y = mx + b\), where m represents the slope and b represents the y-intercept.

Using the provided data, the linear regression line equation is:

\(\[ y = 1.3642x + 3.2324 \]\)

To find the value of \(y\) at \(x = 7\), we substitute \(x = 7\) into the equation:

\(\[ y = 1.3642(7) + 3.2324 \]\)

Simplifying the equation, we get:

\(\[ y = 9.5494 + 3.2324 \]\[ y = 12.7818 \]\)

In conclusion, the linear regression analysis allows us to determine the relationship between the variables x and y in the given data set. By finding the equation of the linear regression line, we can estimate the value of y for any given x. In this case, the linear regression line equation is \(y = 1.3642x + 3.2324\). By substituting \(x = 7\) into the equation, we find that the estimated value of y is approximately \(12.78\). This analysis provides a useful tool for predicting and understanding the relationship between variables, allowing us to make informed decisions and interpretations based on the data.

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Answer:

x = 21°, y = 42°, TQ = 3.75 cm

Step-by-step explanation:

In Δ SRT

∵ m∠RST = 21°, m∠STR = 117°

∵ The sum of the measures of the interior angles of a triangle is 180°

∴ m∠RST + m∠STR + m∠SRT = 180°

∴ 21° + 117° + m∠SRT = 180°

→ Add the like angles

∴ 138° + m∠SRT = 180°

→ Subtract 138° from both sides

∴ m∠SRT = 42°

In the given circle

∵ ∠SRP and ∠SQP are inscribed angles subtended by the arc SP

→ Inscribed angles subtended by the same arc are equal in measures

∴ m∠SRP = m∠SQP ⇒ (1)

∵ m∠SRP = 42° , m∠SQP = y

∴ y = 42°

∵ ∠RSQ and ∠RPQ are inscribed angles subtended by the arc RQ

→ Inscribed angles subtended by the same arc are equal in measures

∴ m∠RSQ = m∠RPQ ⇒ (2)

∵ m∠RSQ = 21° , m∠RPQ = x

∴ x = 21°

∵ The chord SQ intersects the chord PR at the point T

∴ ∠STR and ∠PTR are vertically opposite angles

→ The vertically opposite angles are equal in measures

∴ m∠STR = m∠PTR ⇒ (3)

→ From (1), (2), and (3) the two triangles SRT and PQT are similar using

  AAA postulate of similarity

∴ Δ SRT ≈ ΔPQT ⇒ AAA postulate

∴ Their sides are proportion

∴ \(\frac{SR}{PQ}=\frac{RT}{TQ}=\frac{ST}{PT}\)

∵ SR = 8.32 cm, PQ = 9.43 cm, RT = 3.31 cm

→ Substitute them in the ratio above

∴ \(\frac{8.32}{9.43}=\frac{3.31}{TQ}\)

→ By using cross multiplication

∴ TQ × 8.32 = 9.43 × 3.31

→ Divide both sides by 8.32 to find TQ

∴ TQ = \(\frac{(9.43)(3.31)}{8.32}\)

∴ TQ = 3.751598558

→ Round it to 2 d.p

∴ TQ = 3.75 cm

Answer:

Ratio 3 : 1

First person 5 biscuits 

Second person 15 biscuits 

Step-by-step explanation:

“one person gets three times as many as the other”  means  “the ratio is 3 to 1 or just 3 : 1”

………………………

Let x be the number of biscuits that the first person got then the second person should get 3x biscuits.

It’s clear that we have to solve this equation:

x + 3x = 20

Solving:

x + 3x = 20

⇔ 4x = 20

⇔ x = 20/4 = 5

Final answer:

First person: 5 biscuits

Second person: 3×5 = 15 biscuits

Answer:

12 is the lcd

Step-by-step explanation:

because 12x1=12

and 2x6=12

Answer:

12

Step-by-step explanation:

Both 12 and 2 have the factor of 2 in common. (2)(12)/12 gives us the least common LCM (least common multiple) of 12.