Can someone pls help me

Answer:

x -2x and the y is -2y

Step-by-step explanation:

Answer:

d = 4

Step-by-step explanation:

Because the slope formula is:

y2-y1 / x2-x1 = m

10-d / 10+6 = 3/8

Cross multiply 10+6 and 3/8

10-d = 16(3/8)

10-d = 6

10-6=d

4=d

Answer: 3

Step-by-step explanation: The dot or the point/exponent lands on 3/1 simplifying as 3

Answer:

$980

Step-by-step explanation:

33 1/3%           x

------------ = -------------                  Cross multiply

100%         $2,940

33 1/3 x 2,940 = 100x               Multiply

98000 = 100x                           Divide 100 to both sides

980 = x

8) A system of two equations that could be used to find out the price of package A and package B are;

C = 150 + 55h

C = 210 + 40h

9) The number of nights  Kareem would need to stay in a hotel to pay the same amount for either vacation package is; 4 nights

We are told that Kareem is going to Florida and the cost for two different vacation packages is;

Package A

Roundtrip Airfare Cost = $150

Hotel Cost (per night) = $55

Package B;

Roundtrip Airfare Cost = $210

Hotel Cost (per night) = $40

A) Now, if  h represents Hotel Cost and C represents Cost of package, then we have;

For package A;

C = 150 + 55h   ------(1)

For package B;

C = 210 + 40h    ------(2)

9) The number of nights  Kareem would need to stay in a hotel to pay the same amount for either vacation package is;

150 + 55h = 210 + 40h

210 - 150 = 55h - 40h

60 = 15h

h = 60/15

h = 4

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If a math test is worth 100 points and has 30 problems and  each problem is worth either 3 or 4 points, then there are 10 4 point problems

Total number of questions = 30

Number of 3 point questions = x

Number of 4 point questions = y

The first equation will be

x + y = 30

x = 30-y

Total score of the test = 100 points

Then the second equation will be

3x + 4y = 100

Here we have to use the substitution method, substitute the value of x in the equation

3(30-y) + 4y = 100

90 - 3y +4y = 100

y = 100 - 90

y  = 10

Hence, if a math test is worth 100 points and has 30 problems and  each problem is worth either 3 or 4 points, then there are 10 4 point problems

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The value of  [tex]n ^ {mn}[/tex] = [tex]5^{10}[/tex]  or 9765625.

An index is a number that is raised to power. It is written as a small number to the right and above the base number. Other names for the index are exponent or power.

The index of a number says how many times to use the number in multiplication.

[tex]m^n[/tex]=32

m and n are positive integers.

32 = 2 x 2 x 2 x 2 x 2

32 = [tex]2^5[/tex]

hence, m = 2 and n = 5.

Now, Let's find the value of [tex](n ^ m)^n[/tex].

[tex](n ^ m)^n = n^{m*n}[/tex]

          = [tex]5^{2*5}[/tex]

          = [tex]5^{10}[/tex]     or

          = 9765625

Hence, the value of  [tex]n ^ {mn}[/tex] = [tex]5^{10}[/tex]  or 9765625.

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The slope of the points (15,-6) and (-4,11) is  0.895.

The slope of a line is the ratio of the amount that y increases as x increases some amount.

To calculate the slope of the two points given, we use the formula below.

Formula:

Where:

From the question,

Given:

Substitute these values into equation 1

Hence, the slope of the points is 0.895.

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The  equation of the regression line is  [tex]\bar{y}[/tex]=9.1006+(-0.2157)x and the point prediction of ammonium concentration for 25ml/h is  [tex]\bar{y}[/tex]=3.7081

A regression line is an approximation of the line that describes the true, but unknown, linear connection between two variables. The regression line equation is used to predict (or estimate) the value of the response variable from a given value of the explanatory variable.

In statistical modeling, regression analysis is a collection of statistical techniques for estimating the associations between a dependent variable and one or more independent variables.

a) [tex]\bar{y}[/tex]=β₀+β₁x

Where,

β₁=[tex]S_{xy}[/tex]/[tex]S_{xx}[/tex] -------(1)

Where,

[tex]S_{xy}[/tex]= -341.959231

[tex]S_{xx}[/tex]1585.230769

By substituting these values in equation 1 we get,

β₁= -0.2157

β₀= [tex]\bar{y}[/tex]-β₁x

Where,

[tex]\bar{y}[/tex]=∑[tex]y_{i}[/tex]/n

∑[tex]y_{i}[/tex]=52.8

n=13

Then,

[tex]\bar{y}[/tex]=4.0615

[tex]\bar{x}[/tex]=∑[tex]x_{i}[/tex]/n

∑[tex]x_{i}[/tex]=303.7

n=13

[tex]\bar{x}[/tex]=23.3615

β₀=4.0615-(-0.2157)(23.3615)

=9.1006

Therefore, β₀=9.1006

The regression equation is  [tex]\bar{y}[/tex]=9.1006+(-0.2157)x

If x=25,

[tex]\bar{y}[/tex]=9.1006+(-0.2157)(25)

[tex]\bar{y}[/tex]=3.7081

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Therefore, the transformation of the double integral can be expressed as follows: ∫∫g(x', y') (x' + 1)(y' - 1) dx' dy' = ∫∫g(x', y') (x' + 1)(y' - 1) |J| dA'

the alteration of variables A mathematical trick known as a formula is used to switch the variables in an integral from one set of variables to another. The integral is frequently simplified or made easier to solve by doing this. Given a function f(x) and two sets of variables x and y, the integral of f(x) with respect to x may be represented as the integral of a transformed function g(y) with respect to y, where g(y) is connected to f(x) by a functional connection between x and y. For instance, the integral of f(x) with respect to x can be expressed as the integral of f(sqrt(y)) with respect to y if x and y are connected by the equation y = x2.

How to solve?

x' = x - 1

y' = y + 1

∫∫g(x, y) xy dA = ∫∫g(x', y') (x' + 1)(y' - 1) dx' dy'

∫∫f(x, y) dA = ∫∫f(x', y') |J| dA'

|J| = | ∂x'/∂x ∂x'/∂y |

| ∂y'/∂x ∂y'/∂y |

|J| = | 1 0 |

| 1 1 |

Therefore, the transformed double integral can be expressed as follows:

∫∫g(x', y') (x' + 1)(y' - 1) dx' dy' = ∫∫g(x', y') (x' + 1)(y' - 1) |J| dA'

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On average, Logan drinks (2)/(3) of a 6-ounce glass of water in 1(4)/(5) hours. How much water does he drink, in glasses per hour? Enter your answer as a whole number, proper fraction, or mixed number in simplest form.

The following response has been constructed in a straightforward, step-by-step approach.

Measure: 1 ounce

2/3×6 =4 glass

Considering that a person consumes four glasses every hour.

he Drinks x glasses after one hour.

Reason: Since 21/5x=4,

21x=5×4

Glass 21x=20x=20/21

Answer: So, consume 20/21 glasses in an hour.

The response is a correct fraction.

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The parabola has a vertex at (-3, -2), has a p-value of 3 and it opens up.

Mathematically, the vertex form of a parabola is represented by this mathematical expression:

y = a(x - h)² + k

Where:

h and k represents the vertex of the equation.

In Mathematics, the focus for either a right or left parabola is modeled by this mathematical expression (h + p, k) while its directrix is modeled by this mathematical expression x = h - p;

h + p = 0   ⇒ h = -p

h - p = -6

Solving the set of linear equations simultaneously, we have:

-p - p = -6

-2p = -6

p = 6/2

p = 3

For the value of h, we have:

h = -3.

Additionally, the vertex form of this parabola is given by:

y = a(x - h)² + k

y = a(x - 3)² - 2

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Complete Question:

A parabola can be drawn given a focus of (0, −2) and a directrix of x = −6. What can be said about the parabola?

The parabola has a vertex at ( , ), has a p-value of

and it

-opens up

-opens down

-opens right

-opens left

Answer:

Below

Step-by-step explanation:

m = slope

Use two points on the graph to find  m

    m = ( x1-x2)/(y1-y2)  = ( 1- -1) / ( -4 - -2) =  2 / -2 = -1

Perpindicular slope is   - 1/m   =   -1 / (-1) = 1

By definition, we can complete the two sentences as follows:

A general function can be written as:

y = f(x).

This function "f" takes inputs "x" and transforms them into the outputs "y".

And by definition, the set of all the inputs x is called the domain of the function, while the set of all outputs is called the range of the function.

So the two complete sentences are:

The collection of all input values is the domain of the function.

The collection of all output values is the range of the function.

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Answer:

x = 6.928   [tex]x = 0.072[/tex]

Step-by-step explanation:

Use the quadratic formula

[tex]\frac{-b(+-)\sqrt{b^{2 } -4ac} }{2a}[/tex]

[tex]a = 2\\b = -14\\c = 1[/tex]

[tex]\frac{-(-14)(+-)\sqrt{(-14)^{2 } -4(2)(1)} }{2(2)}[/tex]

[tex]\frac{-(-14)(+-)\sqrt{196 -8} }{4}[/tex]

[tex]\frac{14+\sqrt{188} }{4}[/tex]     [tex]\frac{14-\sqrt{188} }{4}[/tex]

[tex]x = 6.928[/tex]  [tex]x = 0.072[/tex]

The measure of the angle is 39°.

Complementary angles are angles whose sum is equivalent to 90°. On the other hand, supplementary angles are angles whose sum is equivalent to 180°.

Let x be the measure of the angle.

90° - x = complement angle of x

180° - x = supplement angle of x

If the measure of its supplement is 39 more than twice the measure of its complement, then

180° - x = 39 + 2(90° - x)

Simplify and solve for x.

180° - x = 39 + 2(90° - x)

180° - x = 39 + 180° - 2x

x = 39°

Hence, the measure of the angle is 39°.

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Answer:

all of them are right answers

[tex]x = \frac{24}{23 \\ } [/tex]

or

[tex]x = 1.04[/tex]

or

[tex]x = 1 \frac{1}{23} [/tex]

Answer:

12

Step-by-step explanation:

1) Substitute x into the equation

To substitute you would need to multiply the number before it by 2 (in other questions it would be the value told that is x)

2) Put the numbers you have worked out into the equation

-6 + 1.5 + 5 - 4.5 + 16

3) Work out the final equation

Hope this helps, have a great day!

The equation of the straight line having gradient -7/6 with the point on the line as (3,-1) is y [tex]=[/tex] (-7/6)x [tex]+[/tex] 5/2  .

In the question ,

it is given that

the gradient (slope) of the required line is -7/6 ,

and the coordinate of point on the line is (3 , -1) .

We know that the equation of the line passing through the points (x₁ , y₁) with gradient(m) is given by the formula

(y - y₁) = m(x - x₁)

So , the equation of the straight line will be written as

(y -(-1)) = (-7/6)(x - 3)

y + 1 = (-7/6)(x - 3)

y + 1 = (-7/6)x + 7/2

y = (-7/6)x + 7/2 -1

y = (-7/6)x + 7/2 - 2/2

y = (-7/6)x + 5/2

Therefore , the equation of the straight line is y [tex]=[/tex] (-7/6)x + 5/2 .

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(a) The function "f" is increasing for the x-values of [(-∞) < x ≤ 0] and            [2 < x < ∞], while "f" is decreasing for the x-values of [0 < x ≤ 2].

(b) The function f(x) is greater than 0 at [(-1) < x < ∞], excluding the point  (x = 2)

(c) The function f(x) is less than 0 when [x < (-1)]

In the reference attachment attached along with the question statement, we are provided with a graph of a certain function "f",

And as per the question statement, we are required to determine the x-values for the following:

(a) for which "f" is increasing or decreasing,

(b) [f(x) > 0]

(c) [f(x) < 0]

From the graph, it is very clear that, the slope is rising from [(-∞) < x ≤ 0] and [2 < x < ∞], while, declining from [0 < x ≤ 2] of the x-axis. Therefore,

(a) The function "f" is increasing for the x-values of [(-∞) < x ≤ 0] and            [2 < x < ∞], while "f" is decreasing for the x-values of [0 < x ≤ 2].

(b) The function f(x) is greater than 0 at [(-1) < x < ∞], excluding the point  (x = 2)

(c) The function f(x) is less than 0 when [x < (-1)]

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The largest volume that the box  can have is 02.

equation for volume :

v = x (3- 2x)²

Differentiating using chain rule and product line:

    v' = 1(3 - 2x)² + 2x (3 -2x) (-2)

        = 9 - 12x + 4x² -12x +8x²

        = 9 - 24x +12x²

Finding the critical value where v' = 0

 v' = 0

⇒12x² - 24x +9 =0

⇒3 ( 4x² -8x +3)=0

⇒ 4x² -8x+3 =0

(2x- 3) (2x-1) =0

or, x=3/2 or 1/2

putting the value x= 1/2, we get,

 V = 2

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Segment BC  is congruent to segment EF,

Angle BAC  is congruent to angle EDF,

Angle CBA is congruent to angle DEF.

Given:

Triangle ABC is congruent to triangle DEF.

if two triangles are congruent:

congruent sides are:

AB ↔ DE ,BC↔EF, CA ↔ FD

congruent angles are:

<A ↔ <D , <B ↔ <E, <C ↔ <F.

Therefore Segment BC  is congruent to segment EF, Angle BAC  is congruent to angle EDF, Angle CBA is congruent to angle DEF are correct.

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Answer:

$91.92

Step-by-step explanation:

1/2 lb of shrimp is 11.49 how much for 4lb?

1/2 pounds = 0.5 pounds

4lb/0.5lb = 8

11.49 * 8 = $91.92

The conversion is 0.785 radian = 141.3 degree.

The same attribute is expressed using a unit conversion, but in a different unit of measurement. For instance, time can be expressed in minutes rather than hours, and distance can be expressed in kilometres, feet, or any other measurement unit instead of miles.

A conversion factor is a value or a number that is used to multiply or divide one set of units into another.

Given:

We have to convert 0.785 rad to pi format.

As, we know Radians = Degrees × π/180'

and, 0.785 rad = 0.785 x 180

                        = 141.3 Degree

Hence, the conversion is 0.785 radian = 141.3 degree.

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Answer:

x=-4

Step-by-step explanation:

y=mx+b is slope intercept form where m is slope and b is y intercept

To find slope we use y2-y1/x2-x1

5-9/-4-(-4)

-4/0

The slope is undefined

But we can write this as x=-4 since it is a vertical line going straight up

Hopes this helps please mark brainliest

From the given statements the valid statement is, If I buy cookies, then I bake a cake.

What is valid statement?

Valid: An argument is only considered to be valid if all of the premises must be true in order for the conclusion to be true. It is also impossible for all of the premises to be true while the conclusion is false.

Consider, the given statements

If I bake a cake, then I won't buy cookies.

If I don't buy cookies, then I don't need milk.

Since an argument is valid if and only if it is necessary that if all of the premises are true, then the conclusion is true.

Here, the premises are true, so the valid argument is,  If I buy cookies, then I bake a cake.

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Answer:

Horizontal: y=-8

Vertical: x=-3

Step-by-step explanation:

Answer:

x = - 3 and y = - 8

Step-by-step explanation:

the equation of a vertical line parallel to the y- axis is

x = c ( c is the value of the x- coordinates the line passes through )

the line passes through (- 3, - 8 ) with x- coordinate - 3 , then

x = - 3 ← equation of vertical line

the equation of a horizontal line parallel to the x- axis is

y = c ( c is the value of the y- coordinates the line passes through )

the line passes through (- 3, - 8 ) with y- coordinate - 8 , then

y = - 8 ← equation of horizontal line

In order to solve for the variable in the equation 2 (4 x 3) 4 = 3 x minus (2 x 4), giovanni first applies the distributive property.

The equation is a result is 8x+6+4 = 3x-2x-4.

Given that the distributive property is to multiplying by the numbers outside of the parentheses into the inside of the parentheses

So we now that,

2×4x=8x

2×3=6

8x+6+4

Then do the same thing on the other side also so that Which we gets is equal to the below

3x-2x-4

so the equation we get is

8x+6+4 = 3x-2x-4

Hence the answer is, we get the equation is a result is 8x+6+4 = 3x-2x-4

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40 percentage of 75 is 30 and 2/5 of 75 is 30. So, Priya calculated in a correct way.

Given,

To find 40% of 75, Priya calculates 2/5 of 75

We have to find the value of 40% of 75.

Percentage;

A value or ratio that may be stated as a fraction of 100 is referred to as a percentage in mathematics. If we need to calculate a percentage of a number, we should divide it by its entirety and then multiply it by 100. The proportion therefore refers to a component per hundred. Per 100 is what the word percent means. The sign "%" is used to denote it.

Now,

Lets find;

40% of 75

40/100 × 75 = 40/4 × 3 = 10 × 3 = 30

That is,

40% of 75 is 30.

Now,

2/5 of 75

2/5 × 75 = 2 × 15 = 30

That is,

2/5 of 75 is also 30

Therefore,

40 percentage of 75 is 30 and 2/5 of 75 is 30. So, Priya calculated in a correct way

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