Alejandro bought $3.50 worth of pencils and erasers at the school store. Pencils cost $0.50 apiece, and erasers cost $0.75 apiece. Which equation written in standard form represents the number of pencils, p, and the number of erasers, e, that Alejandro bought?
A. 0.75e = 3.50 – 0.50p
B. 0.50p + 0.75e = 3.50
C. 3e = 14 – 2p
D. 2p + 3e = 14

Answers

Answer 1

Answer:

I would say that is is B

Step-by-step explanation:

Just put the answer

Please make be brainliest or like rate my answer please and thanks <3


Related Questions

The measures of the interior angles of a pentagon are 2x + 15, 3x, 3x + 5, 4x + 10, and 5x. What is the measure of the largest angle for this pentagon?
130
140
160
150

Answers

Answer:

i think 140

Step-by-step explanation:

even tho this one old

A pentagon's largest internal angle is 150 degrees.

What is a pentagons?

The geometric shape known as a pentagon has five sides and five angles. Penta here means five, and gon means angle. One of the different kinds of polygons is the pentagon. A regular pentagon's internal angles add up to 540 degrees.

Given, The measures of the interior angles of a pentagon are 2x + 15, 3x, 3x + 5, 4x + 10, and 5x. Since the sum of all the interior angles of the pentagon is 540 degrees. Hence

2x + 15 + 3x + 3x + 5 + 4x + 10 + 5x = 540

17x  + 30 = 540

17x  = 510

x = 30

All five angles of the pentagon are 75, 90, 95, 130, and 150.

Therefore, the biggest interior angle of a pentagon is 150 degrees.

Learn more about the pentagons here:

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HELP im behinds on math and need help with this

Answers

Answer:

261.7 mm³

Step-by-step explanation:

the volume= ⅓×3.14×5²×10

= ⅓× 785

= 261.7 mm³

A book which was bought for Rs.100 was sold at Ra.90 what will be the loss percent?​

Answers

Answer:

10% or 1%

Step-by-step explanation:

i swear u better not remove this

What is 75.4 in expanded form

Answers

Answer: 75.4 =

 70  

+ 5  

+   0.4

Step-by-step explanation:

Hope this helps :)

HELP ASAPP!!

Distribute:

3(-2x + 9)

Answers

Answer:

-6x+27

hope this helps

have a good day :)

Step-by-step explanation:

Answer:

-6x+27

Step-by-step explanation:

3(-2x + 9)

-6x+27

selecting a marble from a bag containing 50 marbles and 45 orange marbles

Answers

u have a 90% chance of picking an orange marble, 10% of picking a different color

Solve the following expression when
b = 12
10 + b + b

Answers

Answer:

34

Step-by-step explanation:

Plug in 12 in place of b

10+b+b

10+12+12

34

If the price is increasing at a rate of 2 dollars per month when the price is 10 dollars, find the rate of change of the demand.

Answers

Answer:

The demand reduces by $7.12 per month

Step-by-step explanation:

Given

[tex]p\to price[/tex]

[tex]x \to demand[/tex]

[tex]2x^2+5xp+50p^2=24800.[/tex]

[tex]p =10; \frac{dp}{dt} = 2[/tex]

Required

Determine the rate of change of demand

We have:

[tex]2x^2+5xp+50p^2=24800.[/tex]

Differentiate with respect to time

[tex]4x\frac{dx}{dt} + 5x\frac{dp}{dt} + 5p\frac{dx}{dt} + 100p\frac{dp}{dt} = 0[/tex]

Collect like terms

[tex]4x\frac{dx}{dt} + 5p\frac{dx}{dt} = -5x\frac{dp}{dt} - 100p\frac{dp}{dt}[/tex]

Factorize

[tex]\frac{dx}{dt}(4x + 5p) = -5(x + 20p)\frac{dp}{dt}[/tex]

Solve for dx/dt

[tex]\frac{dx}{dt} = -\frac{5(x + 20p)}{4x + 5p}\cdot \frac{dp}{dt}[/tex]

Given that: [tex]2x^2+5xp+50p^2=24800.[/tex] and [tex]p = 10[/tex]

Solve for x

[tex]2x^2 + 5x * 10 + 50 * 10^2 = 24800[/tex]

[tex]2x^2 + 50x + 5000 = 24800[/tex]

Equate to 0

[tex]2x^2 + 50x + 5000 - 24800 =0[/tex]

[tex]2x^2 + 50x -19800 =0[/tex]

Using a quadratic calculator, we have:

[tex]x \approx -113\ and\ x\approx88[/tex]

Demand must be greater than 0;

So: [tex]x=88[/tex]

So, we have: [tex]x=88[/tex]; [tex]p =10; \frac{dp}{dt} = 2[/tex]

The rate of change of demand is:

[tex]\frac{dx}{dt} = -\frac{5(88 + 20*10)}{4*88 + 5*10} * 2[/tex]

[tex]\frac{dx}{dt} = -\frac{5(288)}{402} * 2[/tex]

[tex]\frac{dx}{dt} = -\frac{2880}{402}[/tex]

[tex]\frac{dx}{dt} \approx -7.16[/tex]

This implies that the demand reduces by $7.12 per month

2x 3 +5x 2 +x−5 is divided by x+1x+1

Answers

Answer:1

Step-by-step explanation:

Rectangle F'G'H'I' is a translation of rectangle FGHI. Write the translation rule.

Answers

Yo vivo en Granada, una ciudad pequeña que tiene monumentos muy importantes como la Alhambra.

find the exact value of tan A in simplest radical form

Answers

Answer:

tan A = 20/21

Step-by-step explanation:

tan Θ = opp/adj

tan A = 20/21

Find the solution(s) to the system of equations. Select all that apply.
y=x-4
y = 2x- 5

Answers

Answer:

Y

Step-by-step explanation:

3х2+9х+6
Foil method of

Answers

Answer:

3(4+3x)

Step-by-step explanation:

See Image below.

write 20 words with meaning​

Answers

Answer:

20 words with meaning

Step-by-step explanation:

An architect is creating a scale drawing of a school computer lab. The length of the lab is 32 feet and the width of the lab is 48 feet. If each 16 feet of the lab equals 2 centimeters on a scale drawing, which of the following drawings is the scale drawing of the computer lab?

Answers

Answer:

The answer is B

Step-by-step explanation:

Length:

32ft. / 16ft. = 2

2 x 2cm. = 4 cm.

Width:

48ft. / 16ft. = 3

3 x 2cm. = 6cm

Answer:

b

Step-by-step explanation:

An indoor running track is 200 meters in length. During a 3,000-meter race, runners must complete 15 laps of the track. An electronic timing device records the time it takes each runner to complete a lap for every lap in the race. These are called lap times. The histogram below displays the lap times for Stefano, a runner in the 3,000-meter race.

A histogram titled Stefano apostrophe s 3,000 meter race lap times has lap times (seconds) on the x-axis and frequency on the y-axis. 32 to 33, 1; 34 to 35, 1; 36 to 37, 1; 37 to 38, 4; 38 to 39, 5; 39 to 40, 1; 40 to 41, 2.

Which of the following is a true statement based on the histogram?

There were no lap times between 35 and 36 seconds.
There were six laps with times less than 37 seconds.
There were three laps with times greater than 38 seconds.
The interval from 37 to 38 seconds saw the most lap times.

Answers

Answer:

Person above me is wrong lol

If we're looking at the same graph, it's actually (A).

There should be a gap between 35-36.

There were no lap times between 35 and 36 seconds.

ED2021

The following is a true statement based on the histogram

There were no lap times between 35 and 36 seconds.

The correct option is (A).

What is Histogram?

A histogram is a graphical representation that organizes a group of data points into user-specified ranges.

An indoor running track is 200 meters in length.

As, a 3,000-meter race, runners must complete 15 laps of the track.

As, there were no data for interval 35-36 seconds. There should be a gap between 35-36.

So, there were no lap times between 35 and 36 seconds.

There were six laps with times less than 37 seconds is false.

There were three laps with times greater than 38 seconds, is also false.

The interval from 37 to 38 seconds saw the most lap times, most lap time is 38-39.

Learn more about histogram here:

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The demon drop at cedar point in Ohio takes riders to the top of a tower and drops them 60 feet. A function that approximates this ride is h = 16^2 + 64x - 60, where h is the height in feet t

Answers

Completion of question:

The Demon Drop at Cedar point in Ohio takes riders to the top of the tower and drops them 60 feet. A function that approximates this ride is h=-16^t2 + 64t + 60 where h is the height in feet and t is the time in seconds. About how many seconds does it take for riders to drop to the ground?

Answer:

4.78 s

Step-by-step explanation:

Given the equation :

h = - 16^t2 + 64t + 60

Using the quadratic formula ; where

a = - 16 ; b = 64 ; c = 60

Dropping to the ground, h = 0

16^t2 + 64t - 60 = 0

-b ± (√b²- 4ac) / 2a

-64 ± (√64²- 4(-16)(60)) / 2(-16)

-64 ± (√7936) / - 32

(-64 ± 89.08) / - 32

(-64 + 89.08) / - 32 = - 0.783 OR

(-64 - 89.08) / - 32 = 4.78

Reject the negative

t = 0.783 seconds

1. Three people went to lunch at a buffet restaurant that charges $9.99 per
person for food.
• Each drink is an additional $1.99.
• Sales tax is 8.5%.
• Each person orders a drink, food, and leaves a $1.50 tip.
How much was their total lunch bill?
A $14.50
B. $35.94
C. $39.99
D. $43.49

Answers

C 39.99 adding it all together
The answer beshould be C

If 2^2x = 2^3, what is the value of x?

Answers

Answer:

x=2

Step-by-step explanation:

i’m so confused.. a little help?

Answers

Answer:

Triangle has a greater perimeter.  

Step-by-step explanation:

Triangle perimeter = 21cm

Add the sides.

Square perimeter = 16cm

Add the sides (since it's a square the sides are the same.)

Mr. Davis drives 508 miles in eight hours. At this rate, how many miles
does he drive in six hours?

Answers

Answer:

he drives 254 miles in 6 hours

Step-by-step explanation:

Answer:

254 miles in 6 hours

Step-by-step explanation:

HI can someone do these 5 problems? it will really help me out I'll give out brainliest to the person who answers them. (No links) ​

Answers

Answer:

$73.60

$345

simple interest = amount deposited x time x interest rate

600 + (600 x 0.055 x 5) = $765

600 + (600 x 0.055 x 5) > $2000

$765  $2000

He would not have $2000 in 5 years

Step-by-step explanation:

Total cost of items purchased = $75 + (2 x $8.50) = 92

If there is a 20% discount, he would pay (100 - 20%) 80% of the total cost =

0.8 x $92 = $73.60

commission earned = percentage commission x amount of sales

10% x $3450

= 0.1 x 3450 = 345

Amount he would have in his account = amount deposited + simple interest

simple interest = amount deposited x time x interest rate

600 x 0.055 x 5 = $165

Amount in his account in 5 years = $165 + 600 = $765

He would have less than $2000 in his account. he would have $765

Helpppppppppppppppp meeeeeeeeeeee plssssssssssssssssss

Answers

Answer:

A: NO

B: YES

C: NO

D: NO

Step-by-step explanation:

Answer:

A. No
B. Yes
C. No
D. No

Explanation: Have an amazing day!!

Find the missing dimension.

Answers

Answer:

1.66

Step-by-step explanation:

a = b*h

5.833 = 5*h

5.833/5 = h

1.166 = h

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

check work:

b*h = a

5 * 1.166 = 5.833

True

Answer:

1.66

Step-by-step explanation:

I did this already in my math class

Which pair of inequalities is equivalent to 0 Choose the correct answer below.

Answers

Answer: D is correct

Step-by-step explanation:

Answer:

C.   x > 0 and x ≤ 3

Step-by-step explanation:

0 < x ≤ 3

when  0 < x then x > 0

Example: 0 < 2 then 2> 0

Therefor

x > 0 and x ≤ 3

I need help with the solutions for 19,20,21 thank you

Answers

Answer:

GIVEN :-

Coordinates of points are :-

(-5 , 12)(2 , 8)(3 , -6)

TO FIND :-

All the trigonometric values of given points

FACTS TO KNOW BEFORE SOLVING :-

It's important to know that :-

In 1st quadrant (0° to 90°) , all the trigonometric values are positive .In 2nd quadrant (90° to 180°) , except sin & cosec , rest all trigonometric values are negative.In 3rd quadrant (180° to 270°) , except tan & cot , rest all trigonometric values are negative.In 4th quadrant (270° to 360°) , except cos & sec , rest all all trigonometric values are negative.

SOLUTION :-

Q1)

Plot (-5,12) on the cartesian plane and name it 'A'Drop a perpendicular to x-axis from 'A' and name the point 'B' where the perpendicular meets x-axis.Join the point A with the origin 'O'.

You'll notice a right-angled ΔABO formed (∠B = 90°) in the 2nd quadrant of the plane whose :-

length of perpendicular of triangle (AB) = 12 unitslength of base of triangle (OB) = 5 unitslength of hypotenuse (OA) = 13 units

Let the angle between OA & positive x-axis be θ.

⇒ ∠AOB = 180 - θ

So ,

[tex]\sin (AOB) = \sin(180 - \theta) = \sin \theta = \frac{12}{13}[/tex][tex]\cos(AOB) = \cos (180 - \theta) = -\cos \theta = -\frac{5}{13}[/tex][tex]\tan(AOB) = \tan(180 - \theta) = -tan \theta = -\frac{12}{5}[/tex][tex]\csc(AOB) = \csc(180 - \theta) = \csc \theta = \frac{1}{\sin \theta} = \frac{13}{12}[/tex][tex]\sec(AOB) = \sec(180 - \theta) = -\sec \theta = -\frac{1}{\cos \theta} = -\frac{13}{5}[/tex][tex]\cot(AOB) = \cot(180 - \theta) = -\cot \theta = -\frac{1}{\tan \theta} = -\frac{5}{12}[/tex]

Q2)

Plot (2,8) on the cartesian plane and name it 'A'Drop a perpendicular to x-axis from 'A' and name the point 'B' where the perpendicular meets x-axis.Join the point A with the origin 'O'.

You'll notice a right-angled ΔABO formed (∠B = 90°) in the 1st quadrant of the plane whose :-

length of perpendicular of triangle (AB) = 8 unitslength of base of triangle (OB) = 2 unitslength of hypotenuse (OA) = 2√17 units

Let the angle between OA & positive x-axis be θ.

⇒ ∠AOB = θ

So ,

[tex]\sin(AOB) = \sin \theta = \frac{8}{2\sqrt{17} } = \frac{4}{\sqrt{17} }[/tex][tex]\cos(AOB) = \cos \theta = \frac{2}{2\sqrt{17}} = \frac{1}{\sqrt{17}}[/tex][tex]\tan(AOB) = \tan \theta = \frac{8}{2} = 4[/tex][tex]\csc(AOB) = \csc \theta = \frac{1}{\sin \theta} = \frac{\sqrt{17}}{4}[/tex][tex]\sec(AOB) = \sec \theta = \frac{1}{\cos \theta} = \sqrt{17}[/tex][tex]\cot (AOB) = \cot \theta = \frac{1}{\tan \theta} = \frac{1}{4}[/tex]

Q3)

Plot (3,-6) on the cartesian plane and name it 'A'Drop a perpendicular to x-axis from 'A' and name the point 'B' where the perpendicular meets x-axis.Join the point A with the origin 'O'.

You'll notice a right-angled ΔABO formed (∠B = 90°) in the 4th quadrant of the plane whose :-

length of perpendicular of triangle (AB) = 6 unitslength of base of triangle (OB) = 3 unitslength of hypotenuse (OA) = 3√5 units

Let the angle between OA & positive x-axis be θ . [Assume it in counterclockwise direction].

⇒ ∠AOB = 360 - θ

So ,

[tex]\sin(AOB) = \sin(360 -\theta) = -\sin \theta = -\frac{6}{3\sqrt{5} } = -\frac{2}{\sqrt{5} }[/tex][tex]\cos(AOB) = \cos(360 - \theta) = \cos \theta = \frac{3}{3\sqrt{5} } = \frac{1}{\sqrt{5} }[/tex][tex]\tan(AOB) = \tan(360 - \theta) = -tan \theta = -\frac{6}{3} = -2[/tex][tex]\csc(AOB) = \csc(360 - \theta) = -\csc \theta = -\frac{1}{\sin \theta} = -\frac{\sqrt{5} }{2}[/tex][tex]\sec(AOB) =\sec (360 - \theta) = \sec \theta = \frac{1}{\cos \theta} = \sqrt{5}[/tex][tex]\cot(AOB) = \cot(360 - \theta) = -\cot \theta = -\frac{1}{\tan \theta} = -\frac{1}{2}[/tex]

Can anyone here help me out?

Answers

Answer:

A)15x+30=weekly income

B)8 hours

Step-by-step explanation:

15x+30= weekly income

The 15 multiplies because it says per hour

The 30 is constant because she only earns it once (per week)

15x+30=150

minus 30 from both sides

15x=120

divide by 15

x=8

Choosing a tuna turkey or cheese sandwich on wheat or white bread with a side of potato chips corn chips or baked potatoes

Answers

Answer:

Cheese sandwich on white bread and a side of potato chips

Step-by-step explanation:

Hundred Metal Spheres with a radius of 4cm each are melted. The melted solution is filled into a cube with a base area of 16cm x 10cm. Find the height of the cube filled with solution.

Answers

Answer:

Height = 167.47 cm

Step-by-step explanation:

volume of one sphere = 4/3πr³ = 4/3(3.14)(4³) = 267.9467 cm³

267.9467 cm³ x 100 spheres = 26794.67 cm³

volume of cube = L x W x H

26794.67 = 16 x 10 x H

H = 167.47 cm

two-thirds of the quantity 63 less than y

Answers

Answer:

y - 2/3 * 63 or y - 42

Step-by-step explanation:

two-thirds of the quantity 63: 2/3 * 63

two-thirds of the quantity 63 less than y: y - 2/3 * 63 = y - 42

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