Find f(-1) for the
piece-wise function.
f(x) = {
-2x+1
-x+ 2
if x ≤ 1
if x > 1
f(-1) = [?]

Answer:

1. 5km/hr

2. 165km/hr

3 2.5m/s

Answer:

1 6.32km/h

2 The average speed of the helicopter will be 96km/ hr or 1.6km/min.

3 2.5 m per second

4 0.002 km/h

Step-by-step explanation:

hope this helps

Answer:

3/4

Step-by-step explanation:

(75 divided by 25 / 100 divided by 25) = 3/4

Answer:

5

Step-by-step explanation:

4(5+6)=44

4(11)=44

44=44

Hope this helps! If so, mark brainliest have a great day.

The number which decreased by 15% is 170 is 200.

Percentage is defined as the parts of a number per fraction of 100. We have to divide a number with it's whole and then multiply with 100 to calculate the percentage of any number.

So the percentage actually means a part per 100.

Percentage is usually denoted by the symbol '%'.

We have to find the number such that the number decreased by 15% is 170.

Let x be the required number.

Then,

x - (15% of x ) = 170

Solving, we will get the value of x.

x - (0.15x) = 170

0.85x = 170

Dividing both sides by 0.85,

x = 200

Hence the required number is 200.

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The question in English is,

What number decreased by 15% is 170?

ANSWER and EXPLANATION

Let the cost of renting the truck be C.

Let the number of miles be m.

Let the number of days be d.

The cost of renting the truck is $25 per day plus $0.32 per mile.

This implies that the cost of renting the truck is:

(a) The cost of renting a truck for one day and 480 miles is found by substituting 1 and 480 for d and m respectively:

(b) The cost of renting a truck for one day and 520 miles is:

(c) The cost of renting a truck for two days and 600 miles is:

(d) The cost of renting a truck for three days and 975 miles is:

Answer:

$4.20 / gallon of gas (divide 16.80 by four gallons)

Step-by-step explanation:

please mark brainliest, give a thanks, and rate a five stars if this helped! feel free to ask anymore questions if you need any more help! thanks!

(lol optional): add my sc: tealyn337

Answer:

c: plane ptm

Step-by-step explanation:

Answer:

c=px8

Step-by-step explanation:

The solution is

a) The number is 6

b) The equation of the parabola is y = x² + 4x + 96 with vertex ( -2 , 92 ) and the y intercept is ( 0 , 96 ) and the axis of symmetry is x = -2

What is a Parabola?

A Parabola, open curve, a conic section produced by the intersection of a right circular cone and a plane parallel to an element of the cone. A parabola is a plane curve generated by a point moving so that its distance from a fixed point is equal to its distance from a fixed line

The equation of the parabola is given by

( x - h )² = 4p ( y - k )

where ( h , k ) is the vertex and ( h , k + p ) is the focus

y is the directrix and y = k – p

The equation of the parabola is also given by the equation

y = ax² + bx + c

where a , b , and c are the three coefficients and the parabola is uniquely identified

Given data ,

a)

Let the equation be represented as A

Now , the value of A is

Let the number be = n

A = Two-fifth of the sum of a number and 24 is equal to 5 times the number decreased by 18

Substituting the values in the equation , we get

2/5 ( n + 24 ) = 5n - 18

On simplifying the equation , we get

Multiply by 5 on both sides of the equation , we get

2 ( n + 24 ) = 25n - 90

2n + 48 = 25n - 90

Subtracting 2n on both sides of the equation , we get

23n - 90 = 48

Adding 90 on both sides of the equation , we get

23n = 138

Divide by 23 on both sides of the equation , we get

n = 6

Therefore , the number is 6

b)

The equation of parabola is given as

y = x² + 4x + 96

Now , the equation can be simplified as

y = (x + 2)² + 92

The equation of the parabola is given by

( x - h )² = 4p ( y - k )

where ( h , k ) is the vertex and ( h , k + p ) is the focus

Substituting the values in the equation , we get

The vertex of the parabola is P ( -2 , 92 )

The y intercept of the parabola is ( 0 , 96 )

The axis of symmetry of parabola is x = -2

Hence , the equation of parabola is y = (x + 2)² + 92

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Answer:

angle 2,3,6 & 8 equal

angle 1,4,5 & 7 equal

The volume of the figure with two rectangular prisms would be 1, 728 ft ³

.

To find the volume of the figure with the two rectangular prisms, you can find the volume of the individual rectangular prisms and then add them up.

Volume of rectangular prism 1:

= Length x Width x Height

= 19 x 12 x 6

= 1, 368 ft ³

Volume of rectangle prism 2:

= Length x Width x Height

= 10 x 12 x 3

= 360 ft ³

The volume of the entire figure is then :

= 1, 368 + 360

= 1, 728 ft ³

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Answer:

$1625

Step-by-step explanation:

Answer:

1495

Step-by-step explanation:

2*1.15*650

So, the pairs of numbers that would represent the simple main effect of therapy (factor a) at the group setting (b2) in this example would be a1b2 (cognitive-behavioral therapy at the group setting) and a2b2 (relaxation therapy at the group setting).

In a 2x2 factorial design, there are two independent variables, each with two levels. This means that there are a total of four treatment conditions in the experiment. The simple main effect of one of the independent variables (in this case, factor a) at a specific level of the other independent variable (in this case, b2) refers to the effect of that independent variable on the dependent variable when the other independent variable is held constant at a specific level.

To understand this concept more clearly, let's consider an example. Suppose that in your experiment, factor a is the type of therapy (cognitive-behavioral therapy vs. relaxation therapy) and factor b is the type of treatment setting (individual vs. group). In this case, the simple main effect of therapy (factor a) at the group setting (b2) would refer to the effect of therapy on the dependent variable when the treatment setting is held constant at the group level.

The simple main effect of therapy (factor a) at the group setting (b2) would be calculated by comparing the mean response for the cognitive-behavioral therapy condition (a1b2) to the mean response for the relaxation therapy condition (a2b2). This would allow you to determine whether there is a significant difference in the mean response between the two therapy conditions when the treatment setting is held constant at the group level.

So, to answer your question, the pairs of numbers that would represent the simple main effect of therapy (factor a) at the group setting (b2) in this example would be a1b2 (cognitive-behavioral therapy at the group setting) and a2b2 (relaxation therapy at the group setting).

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Answer:

50/50

Step-by-step explanation:

It's random

Answer:

d) 3/9 = 1/3

Step-by-step explanation:

a) 3/9 = 1/3

0, 0.33, 0.67, 1, 1.33, 1.67, 2

Hope this helps!

Answer:

C

Step-by-step explanation:

the distance between 1 and 0 equal to 1

and from 0 to 1 we have 10 pieces and they're equal to each other

that's mean if we say that 1 piece equal to x

then 10x=1

x=1/10

the point he need on the 4th line

4/10=2/5

Answer:

The answer is 15.

Step-by-step explanation:

f(x) = 5x + 40

f(x)=5(-5)+40

f(x)=-25+40

f(x)=15

= -4,-8 I think

Solve for x by simplifying both sides of the equation, then isolating the variable.

It would take Patel 30/7 hours to decorate the day's inventory working alone.

An equation is an expression that shows the relationship between two or more numbers and variables.

A variable can either be independent or dependent. Independent variables do not depend on other variables while dependent variables depend on other variables.

Let x represent the time that it would take only Patel working alone. All three can complete the job if they begin at 5 a.m. (2 hours), hence:

(1/6 + 1/10 + 1/x)2 = 1

1/6 + 1/10 + 1/x = 0.5

1/x = 7/30

x = 30/7

It would take Patel 30/7 hours to decorate the day's inventory working alone.

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Answer:

2.92

Step-by-step explanation:

Normal price

4 * 6.98 =27.92

Sale price

2 for 12.50   means 4 at 2* 12.50

2*12.50 = 25

Subtract

27.92-25=2.92

He saved 2.92

Answer:

x = 12

Step-by-step explanation:

Answer:

64

Step-by-step explanation:

\( (\frac{m^{2} }{m + 3} )^{3} \\ = \frac{m^{6} }{(m + 3)^{3} } \\ = \frac{6 {}^{6} }{{9 {}^{3} } } \)

46656/729

= 64

We can see here that matching the steps for constructing a congruent line segment to their pictures, we have:

Step 1 - Picture a

Step 2 - Picture b

Step 3 - Picture c

Step 4 - Picture c.

Any portion of a line with two ends and a set length is referred to as a line segment. It differs from a line that has neither a beginning nor an end and can be stretched in both directions.

The endpoints of a line segment can be used to define it. The portion of the line that begins at point A and finishes at point B, for instance, is known as the line segment AB.

A ruler or measuring tape can be used to determine the length of a line segment. The distance between two line segments' endpoints is the segment's length.

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Answer:

Step-by-step explanation:

Answer:

The amount or number to be divided is called the dividend

Answer:

If I'm correct it is the divisor.

Step-by-step explanation:

For example:

8 divided by 4 equals 2. I think 4 is the divisor and the 8 is the dividend. So I think it's the divisor, and I really apologize if the answer is incorrect.

Roland’s Boat Tours will make more money if they sell more economy seats, hence the maximum profit is attained if they only sell the minimum deluxe seat which is 6

6*35+ 24*40 = 210+960= $1170

Given details

To make a complete tour, at least 1 economy seats

and 6 deluxe seats

Maximum passengers per tour = 30

"Boat Tours makes $40 profit for each economy seat sold and $35 profit for each deluxe seat sold"

Therefore, to maximise profit, he needs to take more of economy seats

Hence

Let a deluxe seat be x and economy seat be y

Maximise

6 x+ 24y = 30

The maximum profit from one tour is  = 6*35+ 24*40 = 210+960= $1170

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Answer:

D

Step-by-step explanation:

I I think that's the method I know if I'm wrong telling me hope it helps.

answer

D, y=14-x

Step-by-step explanation:

b/c x+y/2=7

y=7×2-x

y=7/1 - x/2

y=7×2-x

y=14-x !!!!!!

The correct pairs of the functions and their inverses are given by the image at the end of the answer.

To find the inverse function, we exchange x and y in the original function, then isolate y.

The first function that we want to find the inverse is:

f(x) = (2x - 1)/(x + 2).

Hence:

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

(y + 2)x = 2y - 1

xy + 2x = 2y - 1

xy - 2y = -1 - 2x

y(x - 2) = -1 - 2x

y = (-1 - 2x)/(x - 2) (which is the inverse function).

The second function which we want to find the inverse is:

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

Then:

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

x(-2y + 1) = y + 2

-2yx + x = y + 2

-2yx - y = 2 - x

-y(2x + 1) = 2 - x

y = (x - 2)/(2x + 1)  (which is the inverse function).

The third function which we want to find the inverse is:

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

Then:

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

2yx + x = y - 1

2yx - y = -1 - x

y(2x - 1) = -1 - x

y = (-x - 1)/(2x - 1) (which is the inverse function).

The fourth function which we want to find the inverse is:

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

Then:

x = (2y + 1)(2y - 1)

2yx - x = 2y + 1

2yx - 2y = 1 + x

2y(x - 1) = (1 + x)

y = (x + 1)/(2(x - 1)) (which is the inverse function).

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