Pls help asap for math

Answer: Railway Track Crossing

Step-by-step explanation: A railway track crossing is usually two “lines”(the railroad and the road) intersecting at a 90 degree angle.

Answer: The adjacent sides of a picture frame

Step-by-step explanation:

The best example would be the adjacent sides of a picture frame. Remember that adjacent means next to and sharing a vertex. The adjacent sides of a picture frame meet at a 90∘ angle and so these sides are perpendicular.

The amount that Reshma spent on comic books is Rs. 165.

The amount that is left with her is Rs. 495.

A fraction is a quantity that is not a whole number. A fraction consists of a numerator and a denominator. An example of a fraction is 1/4. 1 is the numerator and 4 is the denominator.

In order to determine the amount she spent on comics, multiply the fraction spent by the amount of her pocket money. Multiplication is the process used to determine the product of two or more numbers. The sign that represents multiplication is ×.

Money spent on comics = fraction of the money spent x pocket money

1/4 x 660 = Rs. 165

The amount left can be determined by subtracting the amount spent on comics by the value of her pocket money.

Amount left = pocket money - amount left

Rs 660 - Rs 165 = Rs 495

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Translation of negative 6 units x, 1 units y composition reflection across the x-axis

The composition transformation that maps ABCD to A''B''C''D'' comprises

of two or more transformations that maps the image

The rule that describes the composition transformation that maps ABCD to

A''B''C''D'' is the option;

Translation of negative 6 units x, 1 units y composition reflection across the x-axis.

The given coordinates of parallelogram ABCD are (3, 5), (6, 5), (4, 1), (1, 1)

The coordinates of the parallelogram A'B'C'D' are; A'(3, -5), B'(6, -5), C'(4, -1), D(1, -1)

The coordinates of the parallelogram A''B''C''D'' are;

D(-5, 0), C''(-2, 0), A''(-3, -4), B''(0, -4)

The image of the point (x, y), following a reflection about the x-axis is the point (x, -y)

The difference in the coordinates of the parallelogram ABCD and A'B'C'D'

is the change in the sign of the y-coordinates

Therefore, the transformation that gives the parallelogram A'B'C'D' from

the parallelogram ABCD is a reflection about the x-axis

The difference between the coordinates of the vertices of the

parallelogram A'B'C'D' and the parallelogram A''B''C''D'', is a change in the

x-value by (-6), and a change in the y-value by (+1)

Therefore, the parallelogram A''B''C''D'' can be obtained from parallelogram

A'B'C'D', by a translation of -6 units (left) in the x-direction and a translation

of 1 unit, x in the y-direction

Which gives;

The composition transformation that maps the pre-image ABCD to the

final image A''B''C''D'', (given that in a composition transformation, the

transformation to the right is done first) are;

[tex]$\mathrm{T}_{-6,1} \cdot \mathrm{r}_{\mathrm{x}-\{axis}}(\mathrm{x}, \mathbf{y})$[/tex]which is the option;

Translation of negative 6 units x, 1 units y composition reflection across the x-axis

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The sequence of transformations that maps ∆ABC to ∆A′B′C′ is a reflection across the line y = x followed by a translation 10 units right and 4 units up.

A certain order of transformational occurrences is referred to as a transformational sequence. This indicates that more than one transformation is handled by a series of transformations, and the order in which they happen is important.

We are given that ΔA'B'C' exists formed after a sequence of transformations applied to ΔABC.

The first exists a reflection across a line and the second exists a translation.

The coordinates of point C exist (-4, -2). After reflection from the line y = x, the coordinates become (2, -4).

Also, the coordinates of point C' are (12, 0).

So, to get point C' from point C, we should add 10 units to the x-coordinate and 4 units to the y-coordinate.

The translation of 10 units right and 4 units up.

Therefore, the complete transformation is

The sequence of transformations that maps ∆ABC to ∆A′B′C′ is a reflection across the line y = x followed by a translation 10 units right and 4 units up.

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By using linear equation, When the swimsuit was twice as much as the goggles and the swim cap was half the price of the goggles. If the total cost of the items was $59.50, then the price of the swimsuit is $34

The total cost of the items = $59.50

Consider the cost of goggles = 2x

The swimsuit was twice as much as the goggles

The cost of the swimsuit = 4x

Swim cap was half the price of the goggles

The cost of the swim cap = x

Then the price of the items = The cost of goggles + The cost of the swimsuit + The cost of the swim cap

Substitute the values in the equation

2x + 4x + x = 59.50

7x = 59.50

x = $8.5

The cost of the swimsuit = 4x

= 4×8.5

= $34

Hence, by using linear equation, when the swimsuit was twice as much as the goggles and the swim cap was half the price of the goggles. If the total cost of the items was $59.50, then the price of the swimsuit is $34

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Using the rules of complementary angles we calculate that the value of x is  12° .

Pairs of complementary angles have measures which are one right angle.

The two given angles are 29° and ( 5x + 1 )°.

There are a pair of complementary angles.

Therefore 29° + ( 5x + 1 )° = 90 °

or, 5x + 30° = 90 °

or, 5x = 60

or, x = 12°

Therefore using the rules of complementary angles we calculate the value of x is 12°.

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Answer:

t=-20/3

Step-by-step explanation:

Let's solve your equation step-by-step.

8=−6/5t

Step 1: Flip the equation.

−6/5t=8

Step 2: Multiply both sides by 5/(-6).

(5/−6)*(−6/5t)=(5/−6)*(8)

t=−20/3

Answer:

t=−20/3

Answer: -3/4; -2/3; 0; 0.7

The graph of each function in the piecewise function is added as an attachment

The equation of the piecewise function is given as

f(n) = n/2 if n is even

        3n + 1 if n is odd

In the above definition of the piecewise function, we have the following functions and the domains

Note that:

The domain of the function is the set of input values of the graph

This in other words mean the domain of a function is the set of x values of the graph.

Next, we plot the graph of each function in the piecewise function in their respective domain

See attachment for the graph of each function in the piecewise function,

On the graph, the blue line represents f(n) = n/2 while the other line represents f(n) = 3n + 1

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The solution to the linear-quadratic system of equations are: [tex]\begin{pmatrix}x=1,\:&y=3\\ x=-5,\:&y=-3\end{pmatrix}[/tex].

The Standard form for a quadratic equation is  ax²+ bx + c=0, where: a, b and c are your respective coefficients. In the quadratic function, the coefficient "a" must be different than zero (a≠0) and the degree of the function must be equal to 2.

To solve a quadratic function, you should find the discriminant: D=b²-4ac and then use this variable in the formula: [tex]x=\frac{-b\±\sqrt{\Delta} }{2a}[/tex].

An equation can be represented by a linear function. The standard form for the linear equation is: y= mx+b , for example, y=4x+3. Where:

m= the slope. It can be calculated for Δy/Δx .

b= the constant term that represents the y-intercept.

The question asks the solution of the system the following equations

y=x²+5x-3 (1)

y=2+x      (2)

Firstly, you should subtract equation 1 and 2, as result, you have

y-y= x²+5x-3 -(2+x)

y-y= x²+5x-3 -2 -x

0= x² +4x -5

After that for finding x, you should  solve the equation  x² +4x -5=0. Then,

D=b²-4ac

D= 4²-4*1*(-5)

D=16+20

d=36

Thus,

[tex]x=\frac{-b\±\sqrt{\Delta} }{2a}= \frac{-4\±\sqrt{36} }{2*1}= \frac{-4\±\ 6 }{2}[/tex]. Therefore

x1=(-4-6)/2= -10/2=-5

x2= (-4+6)/2 = 2/2=1

From equation 2 : y=2+x

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Answer:

a) ¹⁰√4

Step-by-step explanation:

(4 ⅖)¼ = 4 ^ 2/5 × 1/4 = 4^ 2/20 on simplifying further we get answer as a

Answer:

$36.40

Step-by-step explanation:

.04x35

Answer:

yés it is linear because

two variables that gives a straight line when plotted on a graph.

if it was correct tell me good or it was mistake tell me truth

Step-by-step explanation:

hope it was correct

Based on the sample of students and the family income, the point estimate of the mean score of the group is 511.

The Point Estimate refers to a figure in a population that is meant to describe a value for the entire population. For instance, a point estimate can be the mean of scores for a sample of students.

Going by that logic, the point estimate for the sample of 400 students who had family income between $70,000 and $80,000 is 511. This Verbal SAT Score refers to the mean score that the group got in their Verbal SAT.

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Answer: 12.56unit

Step-by-step explanation:

For the given quadratic function, we have that:

The x-intercepts of the function are the same as the zeros, that is, the values of x for which f(x) = 0.

For this problem, the function is defined as follows:

f(x) = -2x² - 4x.

Hence the x-intercepts are given as follows:

-2x² - 4x = 0

2x² + 4x = 0

2x(x + 2) = 0.

Hence:

The numeric value at x = -4 is calculated replacing each instance of x by -4, hence:

f(-4) = -2(-4)² - 4(-4) = -16.

We have to solve for x as follows:

-2x² - 4x = 2

2x² + 4x + 2 = 0

x² + 2x + 1 = 0

(x + 1)² = 0.

x = -1.

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0.3 less than 15 or 0.3 more than 15 would be the acceptable range of values.

Consequently, based on the provided data, the permitted value range is

between 14.7 and 15.3

The difference between the lowest and highest values in a list or set is known as the range. Put all the numbers in order before determining the range. The lowest number should then be subtracted from the highest. The range of the list is provided in the response.

so we know:

To find the range of values that can are permitted to vary by 2% of 15, first,

find the value of 2% of 15:

2/100*15=30/100=0.3

The permitted range of values would be 0.3 less than 15 or 0.3 greater than 15.

hence the values will be:

15+0.3 or 15-0.3

range=14.7 to 15.3

Therefore the range of the allowable values according to the given data is

from 14.7 to 15.3

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Answer:

−19√2

Decimal Form:

−26.87005768…

Step-by-step explanation:

The differential equation of  the amount of a subject memorized in time t > 0 is k. a(t) + da(t)/dt = km, where k is a constant representing the rate  at which a subject is memorized.

Translate the given word problem into an algebraic expression.

Let m be the total amount of a subject to be memorized.

Let  a(t) be the amount memorized in time t > 0.

Let c(t) be the amount that is left to be memorized in time t > 0.

Then,

c(t) = m - a(t)

From the problem, the rate at which a subject is memorized is assumed to be proportional to the amount that is left to be memorized. It means:

da(t)/dt = k. c(t),  where k is a constant

da(t)/dt = k. (m - a(t))

k. a(t) + da(t)/dt = km

Hence, the differential equation is k. a(t) + da(t)/dt = km

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Answer:

b. 18/51

Step-by-step explanation:

There is a total of 18 blue and yellow candies, so in a total of 51, there would be a chance of 18/51 that you draw a yellow or blue piece.

Answer:

18/51

Step-by-step explanation:

Answer:

it is ten 10

Step-by-step explanation:

Answer:

- x² + 7x + 13

Step-by-step explanation:

a parabola in standard form id expressed as

ax² + bx + c ( a≠ 0 )

given

(x + 1)² - (2x + 3)(x - 4) ← expand factors using FOIL

= x² + 2x + 1 - (2x² - 5x - 12) ← distribute parenthesis by - 1

= x² + 2x + 1 - 2x² + 5x + 12 ← collect like terms

= - x² + 7x + 13 ← in standard form

Answer:

175 x 20

Step-by-step explanation:

You said that bacteria doubles every day, so it's x2. Since it's the course over 10 days, it's 10 x 2 = 20. So the expression is 175 x 20.

The percentage change of the given exponential function f(x) = 400(0.85)^(x) is; 15%

How to Interpret Exponential decay function?

The general form of an exponential decay function is:  

y = a(1 – b)^(x)

where:

y is the final amount that remains after a period of time decayed

a is the initial amount

x is the time

Decay factor = (1 – b).

where;

b is the percent change written in decimal form.

We are given the exponential function as;

f(x) = 400(0.85)^(x)

Now, from the general form of an exponential decay function, we can say that;

1 - b = 0.85

b = 1 - 0.85

b = 0.15 or 15%

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Answer: yes because that is possible

Step-by-step explanation:and i took the quiz it 152

The value of x that makes line l, m and n parallel is 12.

When parallel lines are cut by a transversal line, angle relationships are formed such as corresponding angles, alternate angles, vertically opposite angles etc.

The value of x that makes the line l, m and n parallel can be calculated as follows:

124 + 5x - 4 = 180 (supplementary angles)

124 - 4 + 5x = 180

120 + 5x = 180

subtract 120 from both sides of the equation

120 - 120 + 5x = 180 - 120

5x = 60

divide both sides by 5

x = 60 / 5

x = 12

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