Mathematics High School

The function y=2.5x+3 can be used to determine the cost in dollars for a taxi ride of x miles. What is the rate of change of the cost in dollars with respect to the number of miles
A. $3
B. $1
C. $2.50
D. $5.50

Answers

Answer 1

Answer:

C. $2.50

Step-by-step explanation:

x=1 y=5.5

x=2 y=2.5

Answer 2

Answer:

y=2.5x+3

Compare to slope intercept form y=mx+b

Slope=m=2.5y intercept=b=3

Sl

Here the rate of change is $2.50

Related Questions

Combine like terms to create an equivalent expression.

Answers

Answer:

[tex]\frac{3}{2}[/tex] y - 5

Step-by-step explanation:

Given

- [tex]\frac{1}{2}[/tex] (- 3y + 10) ← multiply each term in the parenthesis by - [tex]\frac{1}{2}[/tex]

= [tex]\frac{3}{2}[/tex] y - 5

3y-10
———. or 3/2y - 5
2

Ayuda con este problema de ecuaciones de primer grado

Answers

Answer:

I can't understand your handwriting

Order the following rational numbers from greatest to least.
-2/5, 0.75, -1/2, 70%, 11/20

Answers

Answer: 0.75, 70%, 11/20, -2/5, -1/2

Step-by-step explanation:

Convert to decimal values and compare:

Q          A

0.75 0.75

70%         0.7

11/20 0.55

-2/5         -0.4

-1/2    -0.5

Please help but actually answer correctly
Find the complement of set B in-universe U.

U is the set of natural numbers less than or equal to 8
B is the set of even factors of 8

Answers

Answer:

B' = {1, 3, 5, 6, 7}

Step-by-step explanation:

U = {1, 2, 3, 4, 5, 6, 7, 8}

B = {2, 4, 8}

So the complement  ( the set of elements in U but not in B) is:

B' = {1, 3, 5,  6, 7}

a man can do a piece of work in 20 days.

i. how much work does he do in 1 day
ii. how much work does he do in 5 days
iii. if he leaves the work after 10 days,how much work is left to do?

pls plssss help​

Answers

Step-by-step explanation:

i) Amount of work done in a day: 1/20

ii) Amount of work done in 5 days: 1/20x5=¼

iii) Work left to do after 10 days: 1/20x10=½

• Persevere in Problem Solving the difference between the solutions to the equation x = a is 30. What is a? Show that your answer is correct.​

Answers

Answer: a=225

Step-by-step explanation:

[tex]a > 0\\\\x^2=a\\\\x^2-a=0\\\\(x-\sqrt{a} )(x+\sqrt{a}) =0\\\\\sqrt{a} -(-\sqrt{a} )=30\\\\2\sqrt{a} =30\\\\\sqrt{a} 15\\\\a=15^2\\\\a=225\\\\Proof:\\\sqrt{225} -(-\sqrt{225} )=2*\sqrt{225} =2*15=30\\\\[/tex]

If a18-a12=24.Find d.​

Answers

a18 − a12 = 24 == 24

d == 24

I hope this is correct and helps..

The selling price of a​ refrigerator, is ​$638.00. If the markup is 10% of the​ dealer's cost, what is the​ dealer's cost of the​ refrigerator?

Answers

Answer:

$421.74

Step-by-step explanation:

Evaluate if m=1 and n=2 what’s 15m/n+1-m^2+n

Answers

[tex]\\ \sf\longmapsto \dfrac{15m}{n}+1-m^2+n[/tex]

[tex]\\ \sf\longmapsto \dfrac{15(1)}{2}+1-(1)^2+2[/tex]

[tex]\\ \sf\longmapsto \dfrac{15}{2}+3-1[/tex]

[tex]\\ \sf\longmapsto \dfrac{15}{2}+2[/tex]

[tex]\\ \sf\longmapsto \dfrac{15+4}{2}[/tex]

[tex]\\ \sf\longmapsto \dfrac{19}{2}[/tex]

Macy's price What does the sofa cost at Ikea?
8. Shahada is looking to purchase a new sofa which costs $680 nt Macy's. At Ikea, she only pays 40% of
(a)
(b)
(c)
(d)
$640
$272
$408
$952

Answers

Answer:

The answer would be $408!

Step-by-step explanation:

680-40%

=408

Answer:

$408

Step-by-step explanation:

$680x40%=$272

$680-$272=$408

She pays $408 and gets $272 off

plz answer both and i need help

Answers

Answer:

1 is commutative property

2 is associative property

Help me with this please

Answers

[tex] \text{Algebraic Representation: }(x,y) \to (4x,4y)[/tex]

The scale factor is [tex]4[/tex].

why is x^4 the largest perfect square of x^5

Answers

Answer:

Step-by-step explanation:

Because x^5 has 5 members. When you group them into 2 members each, there is one x left over. This is most easily seen if you try it with numbers.

The clearest way is to pick something that is not a perfect square to start with.

6 * 6 * 6 * 6 * 6

6^2 is a perfect square. It is grouped into 2 groups. Each one is a 6

So 6^2 = 36. 36 is a perfect square.

You should note that 6 ^3  is not a perfect square. One of the 6s is unmatched and you get a fraction when you square root 6^3.

6 * 6 * 6 = 216. The square root of 216 is 14.697... which goes on forever.

6^4 is a perfect square.

6^4 = 1296 The square root of 1296 is 36.

Which table represents a function?

Answers

Answer:

no . 3

Step-by-step explanation:

please mark me brainliest

What is an equation of the line that passes through the points (1, 8) and (-1, -2)

Answers

Answer:

Step-by-step explanation:

(1,8) (-1,-2)

Slope: (-2-8)/(-1-1) = -10/-2 = 5

y -8 = 5 (x - 1)

y - 8 = 5x - 5

y = 5x +3

plzz i need help i cant get it so im begin

Answers

Step-by-step explanation:

with what do you need help?

I hope we can help..

AC = 3x + 3, BC = 12, and AB = x + 5. Find AC

Answers

▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄Given :AB = x + 5BC = 12 AC = 3x + 3

To Find :Measure of AC

Solution :

As, We're given with,

AB = x + 5, BC = 12, AC = 3x + 3

By segment addition postulate,

⇒AB + BC = AC

⇒x + 5 + 12 = 3x + 3

⇒5 + 12 - 3 = 3x - x

⇒17 - 3 = 2x

⇒14 = 2x

⇒2x = 14

⇒ x = 14/2

⇒ x = 7

Now, finding the measure of AC,

⇒Measure of AC = 3x + 3

= 3(7)+ 3

= 3 × 7 + 3

= 21 + 3

= 24

∴ The measure of AC is 24 ...!

▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄

Answer:

AC = 24

Step-by-step explanation:

Collinear points all lie on the same line, so point A, B, and C are on one line.

So, Ab + BC = AC

AB + BC = AC

x + 5 + 12 = 3x + 3

x + 17 = 3x + 3

   -3             -3

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

x + 14 = 3x

-x          -x

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

14 = 2x

/2     /2

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

7 = x

AC = 3x + 3

= 3 (7) + 3

= 21 + 3

= 24

AC = 24

6 + 2 ÷ 4 × 3 - 7 + 6 + 5 ÷ 3 - 1 × 1

Answers

Answer:

7.16666666667

Step-by-step explanation:

7.16666666667 i think that’s the answer

Let’s try this one again.. I am putting 70 points up! Please help. Last problem that I NEED.

Answers

The domain is the set of x-values used by the graph. In your case it’s everything from -6 to -1, including both.

As an inequality, I’d say -6 ≤ x ≤ -1
As set notation, I’d say { x | -6 ≤ x ≤ -1 }, though some might say { x : -6 ≤ x ≤ -1 }
As an interval, I’d say [-6,-1] and you use the brackets because -6 and -1 are included.

Please tell me how to solve this i just started geometry as a freshman and i don’t understand please!!!

Answers

Answer:

80 degrees

Step-by-step explanation:

The whole angle EBD is 115 degrees, and angle DBG is 35 degrees, therefore

angle GBE is 115-35=80 degrees

Think about it like this, DBG and GBE need to add up to the angle measure of EBD, in other words 35 + GBE = 115

Answer:

Step-by-step explanation:

<DBE = <DBG + <GBE

<DBE = 115                  Given

<DBG = 35                  Given

<GBE = ?

You have to know a couple of things before you start.

All the angles meet at B. Notice B is the center letter. the top given is the equation you need to solve the question.

115 = <GBE + 35                  Subtract 35 from both sides.

115 - 35 = <GBE

80 = <GBE

b=1/4af solve for a
if u could answer this as fast as possible that would be great

Answers

Answer:

b/(1/4)(f)=a

Step-by-step explanation:

b=1/4af

b/(1/4)(f)=a

Answer:

[tex]b = \frac{1}{4} \times a \times f \\ multiply \: both \: side \: by \: \frac{4}{f} \\ b \frac{4}{f} = \frac{1}{4}a \times f \times \frac{4}{f} \\ \frac{b \times 4}{f} = a \\ thank \: you[/tex]

Plssssss help me ASAP!!!!!

Answers

Answer:

6

Step-by-step explanation:

plug in 8 for all p so 4^2 = 16 / 8 x 3 ---> 2 x 3 = 6

27. You are researching the price of a phone. You found an average price of $320.00. One phone cost $295 and another cost $375. Find the price of the third phone.​

Answers

Answer:

$290

Step-by-step explanation:

Assuming there are only three phones, let x = the third phone's price

We already got the prices of the two phones: $295 and $375.

(295 + 375 + x)/3 = 320

First, multiply both sides by 3 to isolate the expression in the parenthesis.

[(295 + 375 + x)/3 = 320]3

295 + 375 + x = 960

670 + x = 960

Subtract 670 from both sides

670 + x = 960

- 670     - 670

x = 290

c 2 +d3, if c = 8 and d=-3

Answers

the equation is (8)2 + (3)3 and the answer is 25

Which expression is equivalent to 35b - 20c + 15?
A) 5(7b - 4c + 3)
B) 7(5b – 3c + 2)
C) 5(7b - 20c + 15)

Answers

Answer:

A

Step-by-step explanation:

Distrubute the 5,...

5 x 7b = 35b

5 x 4c = 20c

5x 3 = 15

35b - 20c + 15

Chow,...!

A 100 ftladder leans against a building. When the angle of elevation of the ladder is 81 degrees, how high up the building will the ladder reach?

Answers

Answer:

I am not to sure but i think a.

Step-by-step explanation:

I really don’t know but I hope this helps

s = ut +1at^2, solve for a​

Answers

[tex]s = ut + \frac{1}{2} a {t}^{2} \\ \\ \frac{1}{2} a {t}^{2} = s - ut \\ \\ a = (s - ut) \: \div (\frac{1}{2} {t}^{2}) \\ \\ a = (s - ut) \: \times ( \frac{2}{ {t}^{2} } ) \\ \\ a = \frac{2s - 2ut}{{t}^{2}} \\ \\ a = \frac{2s}{{t}^{2}} - \frac{2ut}{{t}^{2}} \\ \\ \\ a = \frac{2s}{{t}^{2}} - \frac{2u}{t} [/tex]

I hope I helped you^_^

For a moving object, the force acting on the object varies directly with the objects acceleration. When a force of 45 N acts on a certain object, the acceleration of the object is 9 m/s2. If the force is changed to 20 N, what will be the acceleration of the object.

Answers

Answer:

4m/s^2

Step-by-step explanation:

if 45N =9m/s^2

20N= x

20N*9m/S^2/45N

=4m/s^2

Write an equation in slope-intercept form for the line passing through each pair of points
(0, -2) and (3,4)

Answers

Answer:

[tex]y = 2x -2[/tex]

Explanation:

What number can replace c

Answers

Answer:

3

Step-by-step explanation:

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