Select the expressions that are equivalent to -5(-9f + 7) - 7.
-42f + 45
-9f-42
(-9f + 7)-5-7
45f - 42

Answer:

Step-by-step explanation:

2500+150x=3000+125x

150x-125x=3000-2500

25x=500

x=500/25

x=20 mo

----------------

2500+150*20=3000+125*20

5500=5500 total paid after twenty months

Hope this helps! ;0

The given statement states that the sum of two vectors is  = (2 , 5).

Vector addition is the process of joining two or maybe more vectors to get a vector sum. The parallelogram law specifies the rules for adding and multiplying two or more vectors. When eigenvectors are aligned head to tail, this same vector total is calculated by drawing the same vector from the free tail to the free head.

Given two vectors are:

a =(13,-4 )

b = (-11,9)

The vector sum is,

M = [a1 + b1, a2 + b2]

  = (Mx, My).

Substitution of the value we  get:

M = (13 + (-11), (-4) + (9))

  = (2 , 5)

The given statement states that the sum of two vectors is =  (2 , 5).

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The difference quotient of f(t) is: (6 - 2h - 4t)

And when h tends to zero is (6 - 4t)

Here we have the function:

f(t) = (2t)(3 - t)

Expanding the function we get:

f(t) = 6t - 2t^2

Now we want to get the difference quotient, which is:

(f(t+h) - f(t))/h

Replacing our function there, we will get:

( 6*(t + h) - 2*(t + h)^2 - 6*t + 2*t^2)/h

Now we can simplify the numerator to get:

(6*t + 6*h - 2t^2 - 2h^2 - 4*t*h - 6t + 2t^2)/h

(6h - 2h^2 - 4th)/h

Now divide by h so we get:

(6 - 2h - 4t)

Now, remember that in the difference quotient we need to take the limit when h tends to zero, in that limit we will get:

(6 - 4t)

That is the difference quotient of the function f(t).

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The slope passing through the two given two points (1,3) and (4,9) is 2.

The slope of a line is a measurement of its steepness and direction.

A line's slope is defined like a change in y coordinate with respect to a change in x coordinate.

m = Δy/Δx

where,m is the slope

Where, tan θ = Δy/Δx

This tanθ is also known as the line's slope.

A line's slope can be determined by calculating using two points just on straight line. We can use the slope of line formula with the coordinates of a two points.

Consider the coordinates of those 2 points,

P1 = (x₁, y₁)

P2 = (x₂, y₂)

Then slope will become;

Slope = m = tan θ = (y₂ - y₁)/(x₂ - x₁)

Now, as per the given question;

(x₁, y₁) = (1,3) and,

(x₂, y₂) = (4,9)

Substitute the values in the formula of the slope;

m = (9 - 3)/(4 - 1)

m = 6/3

m = 2.

Therefore, the slope of the line passing through the stated points is found to be 2.

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A right-angled triangle is a triangle whose two adjacent sides form a right-angle triangle between them. The given triangle is a right-angled triangle.

A right-angled triangle is a triangle whose two adjacent sides form a right-angle triangle between them.

The slope of the sides of the triangle can be written as,

The given triangle is a right-angle triangle because the slope of the two lines is 1 and -1, whose product is -1. Therefore, the two lines are perpendicular to each other.

Hence, the given triangle is a right-angled triangle.

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Using Venn diagram, out of the 130 people in the sport center, 54 people use at least two facilities.

Venn diagram is a diagram used to present the relationship between sets in a logical form. (See attached image)

Let n = number of people who use at least two facilities

A = people who use the gym = 73

B = people who use the swimming pool = 62

C = people who use the track = 58

A ∩ B = 22

B ∩ C = 29

A ∩ C = 25

A ∩ B ∩ C = 11

n = (A ∩ B - A ∩ B ∩ C) + (B ∩ C - A ∩ B ∩ C) + (A ∩ C - A ∩ B ∩ C) + A ∩ B ∩ C

n = (22 - 11) + (29 - 11) + (25 - 11) + 11

n = 11 + 18 + 14 + 11

number of people who use at least two facilities = 54

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A fraction represents a part by whole.4 1/5 divided 2 3/5 is 21/13,7 1/2 divded 6 2/3 is  9/8,6 1/2 divded 1/2 is 13, 1 1/5 divded 1 2/5 is 6/7,1 2/3 divded 5 is 1/3,6 divded by 1 1/5 is 5,5 2/5 divded 1 1/5 is 27/6.

What is fraction?

A fraction represents a part by whole.

4 1/5 divided 2 3/5

=(21/5)/(13/5)=21/13

7 1/2 divded 6 2/3

=(15/2)/(20/3)=15/2*3/20=9/8

6 1/2 divded 1/2

=(13/2)/(1/2)=13

1 1/5 divded 1 2/5

=(6/5)/(7/5)

=6/7

1 2/3 divded 5

(5/3)/5/1

=5/3*1/5=5/15=1/3

6 divided by 1 1/5

6/(6/5)=6/1*5/6

=5

5 2/5 divded 1 1/5

=27/5/6/5

=27/6

Therefore 4 1/5 divided 2 3/5 is 21/13,7 1/2 divded 6 2/3 is  9/8,6 1/2 divded 1/2 is 13, 1 1/5 divded 1 2/5 is 6/7,1 2/3 divded 5 is 1/3,6 divded by 1 1/5 is 5,5 2/5 divded 1 1/5 is 27/6.

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If the x values do repeat, quickly determine whether the y values match (y values are the second ones in the parenthesis). if, given the identical x values, the y values diverge.

What is a domain in math?

The most crucial aspect of a function to keep in mind is that there is ONLY ONE Y value for EVERY X value.

The x values shouldn't repeat if you look at your set of points, according to this (x is the first value in the parenthesis).

If the x values do repeat, quickly determine whether the y values match (y values are the second ones in the parenthesis).

if, given the identical x values, the y values diverge.

Example: Because the second and third points both have the same x value (in this case 3, in this case), but different y values, (2,8)(3,5)(3,7)(5,8) is not a function (in this case 5 and 7).

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The steps 5 and 6 in the construction of a new line segment  ensures the lengths are equal.

A line segment in geometry has two different points on it that define its boundaries. Alternatively, we may define a line segment as a section of a line that joins two points.

Below are the steps for copying a line segment:

Hence steps 5 and 6 are the steps in the construction of a new line segment which ensures the lengths are equal.

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Answer:

10 + 204 y

Step-by-step explanation:

Answer:

13.

Step-by-step explanation:

8+[(84/12)-4]^2-7+3

= 8 + (7 - 4)^2 - 7 + 3

= 8 + 3^2 - 7 + 3

= 8 + 9 - 7 + 3

= 17 - 7 + 3

= 10 + 3

= 13.

Answer:

(-15, -15)

Hope this helps!

The equivalent expression is negative eleven sixths times n minus one twelfth. Option C

Equivalent expressions are simply defined as expressions that have same solution but differ in the arrangement of their variables, terms, constants and coefficients.

From the information given, we can represent the expression as;

{ - 3 1/ 3n + 1/ 6 } +  { 1 3/ 6n - 3/ 12 }

Convert mixed fraction to improper fractions and expand the bracket

{ -10/3n + 1/ 6 } + { 9/6n - 3/ 12}

-10/3n + 1/ 6 +  9/6n - 3/ 12

Now, collect like terms

-10/3n + 9/ 6n + 1/ 6 - 3/ 12

Find the lowest common multiple

-20+ 9n/6 + 2 - 3 /12

-11n/ 6 - 1/ 12

Thus, the equivalent expression is negative eleven sixths times n minus one twelfth. Option C

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Answer:

C

Step-by-step explanation:

i had this and got it right

================================================

Work Shown:

M = number of miles

L = cost to rent a luxury car = 1.15M + 16.40

E = cost to rent an economy car = 0.80M+10.95

C = difference in price

C = L - E

C = (1.15M + 16.40) - (0.80M+10.95)

C = 1.15M + 16.40 - 0.80M-10.95

C = 0.35M + 5.45

Don't forget to distribute the negative to each term in the second parenthesis.

-------------------

Optional Section:

Let's say you drove M = 100 miles as an example.

The luxury car would cost L = 1.15M+16.40 = 1.15*100+16.40 = 131.40 dollars to rent.

The economy car would cost E = 0.80M+10.95 = 0.80*100+10.95 = 90.95 dollars to rent.

The difference in rental costs is L-E = 131.40-90.95 = 40.45 dollars.

Or you could say C = 0.35M+5.45 = 0.35*100+5.45 = 40.45

This means you pay $40.45 more if you go for a luxury car instead of an economy car.

By rounding to 1 significant figure is 2.

Significant figures are the number of digits in a value, often a measurement, that contribute to the degree of accuracy of the value The first non-zero digit is where we start counting significant figures. The first non-zero digit of a number is considered the first significant figure when counting significant figures. The second digit is considered the second significant figure, and so on. The decimal point may be followed by a significant figure to the left or right of it.

Given: ([tex]\frac{(174.2 × 23.46)}{162.9 × 10.73}[/tex])

174.2 × 23.46 = 4086.732

162.9 × 10.73 = 1747.917

[tex]\frac{4086.732}{1747.917}[/tex] = 2.338 (approx)

= 2 ( rounding to 1 significant figure )

Hence the rounding to 1 significant figure is 2.

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Answer:

3/2

Hope this helps <3

Answer:

Step-by-step explanation:

Equation

-9x+15=3(2-x)                          Remove the brackets.

Solution

-9x + 15 = 6 - 3x                    Add 9x to both sides

-9x+9x + 15 = 6 - 3x + 9x     Combine

15 = 6 + 6x                            Subtract 6 from both sides

15 - 5 = 6 -6 + 6x                Combine

10 = 6x                                Divide by 6

10/6 = 6x/6

Answer

x = 1 2/3 or 1.66666 ...          

The amount of springs the machine will make by 6 pm is; 96 strings

We are given that;

Amount of paper clips machine can make in an hour = 300 paper clips

Amount of strings the machine can make in an hour = 360 strings

Now, the machine starts working at 1pm and makes 450 paper clips.

Thus, time taken = 450/360 = 1.25 hours

This is at 2:15 pm

By 6pm, time taken would be 6:00 - 2:15 = 3:45 or 3.75 hours

Thus, number of springs made = 360/3.75 = 96 springs

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Answer:

1260 springs

SBS answer:

(pc = paper clips)

(s = springs)

300 pc = 1 hour

therfore

450 pc = 1.5 hours

1 pm + 1.5 hours will take us to 2:30 pm

2:30pm to 6:00pm will take 3.5 hours

360 c = 1 hour

so

1080 c = 3 hours

so

1260 = 3.5 hours

taking us to 6pm

Answer:

x = 12

Step-by-step explanation:

NB. Supplementary angles / Angles of a straight line add up to 180°

180° - 124° (the given angle)

= 56°

This means that the other part of the angle must be equal to 56° ...in other words (4x + 8)° = 56°

(4x + 8)° = 56°

56° - 8°

= 48°

So 4x = 48°

-Divide both sides by 4 in order to get rid of the 4 infront of the x so that you're able to get x alone to solve.

4x ÷4 = 48° ÷4

x = 12

You can substitute 12 in the place of x to see if this is correct.

(4(12) +8)° = 56°

56° + 124° = 180°

....therefore x = 12

Answer: a=√3    b=√6

Step-by-step explanation:

We have a right-angled isosceles triangle

Hence, a=√3

According to the sine theorem :

[tex]\displaystyle\\\frac{b}{sin90^0} =\frac{a}{sin45^0} \\\\\frac{b}{1} =\frac{\sqrt{3} }{\frac{\sqrt{2} }{2} } \\\\b=\frac{2\sqrt{3} }{\sqrt{2} } \\\\b=\frac{2\sqrt{3}(\sqrt{2)} }{\sqrt{2} (\sqrt{2}) } \\\\b=\frac{2\sqrt{6} }{2} \\\\b=\sqrt{6}[/tex]

 From the list of numbers presented:

 we can determine that this is a infinite serie.

      A sequence is an order of elements that are governed by a pattern, that is, it has variations between each element that remain constant and allow us to determine values before or after the known elements.

 A sequence maintains an order, and this numerical order can be finite or infinite, in the given case we have the following list:

4/3, 7/3, 10/3, 13/3, 16/3

(1 + 3x)/3

  In this series we have the initial value of the same, but we do not know the final value, although we know its behavior, we can say that this series has no end, it is an infinite serie.

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The magnitude of the vector RS is found to be - 6√2.

The direction of the given vector RS is - Ф = 45° in the fourth quadrant clockwise

The algebraic representation of the distances among two points based on their coordinates (in coordinate system). The Pythagorean theorem is used to calculate distances between points in 2- and 3-dimensional Euclidean space using rectangular coordinates.

Now, in response to the question;

The coordinates of points R and S are (-3,3) and (-9,9), respectively.

The distance formula is described as follows for the points R and S:

RS² = (x₂ - x₁)² + (y₂ - y₁)²

RS = √[(x₂ - x₁)² + (y₂ - y₁)²]

R and S's coordinates are-

(x₁,y₁) = (-3,3)  and (x₂,y₂) = (-9,9).

Changing the values with in formula;

RS = √[(-9 + 3)² + (9 - 3)²]

RS = √[(-6)² + (6)²]

RS = √[36 + 36]

RS  = 6√2 (magnitude of the vector RS)

Now, estimate the direction of the vector RS.

A vector's direction is described by the angle it makes with such a horizontal line.

To determine the direction of a vector, use one of the following equations:

tan Ф = Δy/Δx

Where, x = horizontal change

and, y = vertical change

tan Ф = (y₂ - y₁)/(x₂ - x₁)

         = (-9 + 3)/(9 - 3)

tan Ф = -1

Ф = 45° angle of direction in the fourth quadrant clockwise.

As a result, the distance between coordinates R and s is observed to be 6√2, which is same as the magnitude of the given vector RS,

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For the given values, the value of line AC has a value of 7 units.

There are two subsets of lines: line segments with two end points and rays with one beginning point and an infinite length on the other side, each symbolized by an arrow.

A line with several segments is provided in accordance with the supplied figure.

Segment BC equals 4, Segment BD equals 12, Segment AD equals 15, and Segment AC must be located.

Since, AC = AB + BC.

(AD - BD) Plus BC Equals AC.

AC = ( 15 - 12 ) + 4.

AC = 3 + 4

AC = 7.

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Complete Question -

in the figure below, B is between A and C and C is between B and D. if BC=4, BD=12, and AD=15 and AC

Answer:

c ) it either shows diameter or radius

d) I am not sure

C. When elements are represented in a Venn diagram (using circles), the placement of elements inside or outside the circles indicates their relationship to the sets being represented.

D. Yes, the elements written at the intersection of both circles form a subset of the two sets.

C. Place an element inside a circle to indicate that it is a member of the set indicated by the circle.

An element that is positioned at the intersection of two circles denotes an element that is a part of both sets that are symbolized by those circles.

Outside the circles: In a Venn diagram, an element that is positioned outside every circle does not belong to any of the sets being represented.

D. This is so because these components are a part of the intersection of the two sets and as such, they are a part of both sets. In set theory, all of the components that are shared by two sets are contained in their intersection. Due to their simultaneous membership in both sets, the elements at the intersection are a subset of both sets.

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(9/-3) - 2

= (-3)(-2)

=  -6

An algebraic equation or polynomial equation is an equation of the frame P=0 where P could be a polynomial with coefficients in a few fields, regularly the field of the rational numbers.

algebraic equation, a statement of the equality of two expressions defined by applying to a set of factors the algebraic operations, namely, expansion, subtraction, increase, division, raising to a control, and extraction of a root.

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Answer:

-2

Step-by-step explanation:

Cube root of eight is 2

y= -2

=======================================================

Work Shown:

A = area of the triangle on top, aka ceiling

A = 0.5*base*height = 0.5*6*8 = 24

B = area of the triangle on the bottom, aka floor

B = A = 24

C = area of the front rectangular face

C = length*width = 10*7 = 70

D = area of the face in back on the left

D = length*width = 6*7 = 42

E = area of the face in back on the right

E = length*width = 8*7 = 56

Total surface area = A+B+C+D+E = 24+24+70+42+56 = 216 square meters

------------------------

Alternative Method:

A = area of the triangle on top, aka ceiling

A = 0.5*base*height = 0.5*6*8 = 24

B = area of the triangle on the bottom, aka floor

B = A = 24

LA = lateral area = wall area

LA = (perimeter of the base)*(height)

LA = (6+8+10)*(7)

LA = 24*7

LA = 168

Total surface area = A+B+LA = 24+24+168 = 216 square meters

Equation of the line is y = mx + b , and the equation is x + 2y = 8

The equation of the line with the slope and y-intercept in the slope-intercept form is:

          y = mx+b

Where m = slope of the line

           b = y-intercept

           x,y = variable

Now we have to find an equation of the line whose slope (m) is -1/2 and y-intercept(b) is 4.

From the equation we have:

    y = (-1/2)x + 4

    2y = -x + 8

    x+2y = 8

Therefore the equation of the line is x + 2y =8 with slope m=-1/2 and y-intercept = 4.

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Answer:

22

Step-by-step explanation:

45°

leg a = 1k

leg b = 1k

and leg c = hypotenuse = k * square root 2

k    [tex]\sqrt{2}[/tex] = 22[tex]\sqrt{2}[/tex]

k = 22

-----------------------

leg a or b = k = 22

The slope of the line determined by the equation 2 x+y=5 is -2

A line's inclination or steepness can be determined using the slope formula. Finding the proportion of the change in the y-axis to the change in the x-axis allows it to be used to calculate the slope of any line.

The change in a line's "y" coordinate relative to its "x" coordinate is known as the line's slope.

The given equation =  2x + y = 5

It can be rewritten as: y = -2x + 5            (subtracted 2x from both the sides)

This is the slope-intercept form:  y = mx + c

where m is the slope

If we check our equation, here m = -2

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(B) –9 < x – 4 < 9 inequality is equivalent to Ix-4I <9.

So, Ix-4I <9:

Therefore, (B) –9 < x – 4 < 9 inequality is equivalent.

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The complete question is given below:

Which inequality is equivalent to I x-4 I <9?

A –9 > x – 4 < 9

B –9 < x – 4 < 9

C x – 4 < –9 or x – 4 < 9

D x – 4 > –9 or x – 4 < 9

Answer:

I might be able to help. :))