Mathematics High School

explain step by step ​

Explain Step By Step

Answers

Answer 1

Answer:

D

Step-by-step explanation:

Answer 2
(54-4)(54+4)
(54)^2 -54(4) +54(4) -(4)^2
54^2+0-4^2
54^2-4^2
D is the answer

Related Questions

1.When two variables are proportional which of the following is constant?
(1) their sum
(3) their product
(2) their ratio
(4) their difference

Answers

Answer:

Their Ratio

Step-by-step explanation:

You switched the numbers 2 and 3 btw

[tex]\boldsymbol{\left ( 2 \right )}[/tex] their ratio

A ratio indicates how many times one number contains another.

Two sequences of numbers, often experimental data, are proportional or directly proportional if their corresponding elements have a constant ratio, which is called the coefficient of proportionality or proportionality constant.

When two variables are proportional, [tex]\boldsymbol{\left ( 2 \right )}[/tex] their ratio is constant.

For more information:

https://brainly.com/question/25343092?referrer=searchResults

NEED HELP ASAP!!! WILL MARK BRAINLIEST!!!

A sample of 500 g of radioactive lead-210 decays to polonium-210 according to the function A(t) = 500 e ^-0.0325, where t is time in years. Find the amount of radioactive lead remaining after (a) 4 yr, (b) 8 yr, (c) 15 yr. (d) Find the half-life.

Answers

Answer:

t=4

Step-by-step explanation:

En la clase de matematicas hay un total de 50 alumnos han aprobado el 80% ¿Cuántos alumnos han reprovado

Answers

Responder:

10

Explicación paso a paso:

Dado que:

Número total de estudiantes = 50

Porcentaje que pasó = 80%

Si pasó el 80%;

luego porcentaje que falló:

(100 - 80)% = 20%

Número que falló:

20% del total de estudiantes

0,2 * 50

= 10 estudiantes reprobaron

At an average internet speed of 15 mbps, a computer takes 4 minutes to
download an application file. If the speed slows down to 10 mbps, how
long does the computer take to download the file?​

Answers

Answer:

6 minutes

Step-by-step explanation:

Speed of net = 15mbps

Time taken = 4min.

Total size of application= 15*60*4= 3600mb

Now speed = 10mbps

Time taken = 3600/10

= 360 sec = 360/6 min

= 6 min

Help would be appreciated ​

Answers

Answer: Yes

Step-by-step explanation:

x = 3

y = -7

10x + 20y ≥ -3

10 (3) + 20 (-7) ≥ -3

30 + (-140) ≥ -3

30 - 140 ≥ -3

-110 ≥ -3

(3, 7) is a solution

PLZ HELP ASAP! A vendor at the Saturday Market makes $9 profit on each necklace she sells and $5 profit on each bracelet. Find a combination of necklaces and bracelets that she could sell and make.
a. exactly $100 profit
b. more than $100 profit​

Answers

Answer:B. more than $100 profit

Step-by-step explanation:

When the pattern continues it wont be even

Answer

b

Step-by-step explanation:

Tanner shoots 90 free throws 6 times a week . How many free throws does she shoot each week?

Answers

It is 540 because 90x6=540

Find product of

4xy², 2x² - 3y², x³y³

pls help me will mark u as brainliest

full explanation pls​

Answers

Answer:

8x⁶y⁵ - 12x⁴y⁷

Step-by-step explanation:

→ 4xy² × 2x² - 3y² × x³y³

→ 4x⁴y⁵ × 2x² - 3y²

→ 8x⁶y⁵ - 12x⁴y⁷

HOPE THIS HELPS YOU

Follw me = 10 thanks

Mark as brainliest = 10 thanks

1 thanks to me = 2 thanks

subtract
(-8x+2)-(-5x=7)

Answers

Answer:

Hi! -5/3 :)

Step-by-step explanation:

Hope this helps!

Best of luck! ♥

Which expression is equivalent to 30c - 24d?

Answers

Answer:hmm 30c - 24d = 6d or 6c

Step-by-step explanation:

which expression is equivalent to (7x^3)^2 (x^8)

Answers

Answer:

49x^14

Step-by-step explanation:

A car can cover a distance of 522 km on 36 litres of diesel.How for can it travel with 14 litres of diesel?​

Answers

Answer:

I attached a pic

Step-by-step explanation:

Hope it helps you!!!

can you help me graph -3y<2x+9

Answers

Answer:

Step-by-step explanation:

Solve 12x + 6 = 102 ?????????????????

Answers

Answer:

12x =102-6

x=96/12

x=8 is the correct answer

Answer:

Answer is x=8.

Step-by-step explanation:

12x+6=102

12x+6-6=102-6

12x=96

12x/12=96/12

x=8

I hope it's helpful!

What is the domain and range help plz

Answers

Answer:

domain=(-10, -8, -6, -4, -2, 0, 2, 4, 6, 8, 10)

Range=(2, 4, 6, 8, 10, 0, -2, -4, -6, -8, -10)

Solve the following setting up proportion, cross multiply, and solve for unknown or use (whole)​

Answers

Answer:

60%

Step-by-step explanation:

73:120*100=

(72*100):120=

7200:120=60

Write the equation of the line that passed through the point (-1,-4) that is perpendicular to the line
2
у -2 +1.
Show all of your work and answer in the text box provided.

Answers

Answer:

The line that meets these conditions is y = 1.5x - 2.5

If you want to use fractions, it would be y = 3x/2 - 5/2

Step-by-step explanation:

To get a line perpendicular to y = -(2/3)x + 1, We can start by finding its slope.  That's easy enough as a perpendicular slope is the negative reciprocal of the given one.  As this has a slope of -2/3, our new slope has to be 3/2, or 1.5

All we need to do then is express that rate of change relative to the given point (-1, -4).  We can do this by expanding the classic equation:

Δy = sΔx

We can write that as such:

y - (-4) = 1.5(x - (-1))

y + 4 = 1.5(x + 1)

y + 4 = 1.5x + 1.5

y  = 1.5x + 1.5 - 4

y = 1.5x - 2.5

Or if you want to express those numbers as fractions, it would be y = 3x/2 - 5/2.

To make sure the answer's correct, we can simply plug -1 in as the x value, and see if we get y = -4:

y = 3(-1) / 2 - 5/2

y = -3 / 2 - 5 / 2

y = -8 / 2

y = -4

So we know that our answer is correct (assuming that the slope is correct, which it is - a perpendicular line always has the negative reciprocal of the other line's slope).

PLEASE HELP ME!!! PLEASE HELP ME!!!!

Answers

Answer:

no le entiendo perdon no se ingles incluso estoy en clase

If f(1) = T and f(n) = 4f(n − 1) then find the value of f(5).

Answers

Answer: sorry i have not learnd that yet

Step-by-step explanation:

Answer:I need the answer please

Step-by-step explanation:

can somebody help me? Dean is comparing prices on ground beef. Store A is selling 5 pounds of ground beef for $23.49. Store B is selling 8 pounds of ground beef for $36.96.
Which store is offering the better deal on ground beef? Show your work.

Answers

Answer:

Step-by-step explanation:

A=$23.49/5lb=$4.70/lb

B=$36.96/8lb=$4.62/lb

So store B is cheaper.

i will give first person brainlist for first answer i need help fast
Mr. McCoy entered his classroom at 8:00 am and found the temperature to be 86 degrees. He immediately turns on the air conditioner. By 1:00 pm the temperature was down to 76 degrees The temperature went down at an even rate while the air conditioning was running. write an equation to find the temperature in Mr. McCoy's room at any given time between 8:00 am and 1:00 pm

Answers

Answer:

8:00 am his temperature was 86 at 1 pm it was 76 it went down 10 in the 5 hours of time so it went down 2 every hour I hope this helps                                                                                                                                                                                                                                                                                                                                          

Step-by-step explanation:

point (4, 10) lies in which quadrant

Answers

Answer:

the second quadrant

Step-by-step explanation:

Answer:

itssss sooooo easy

Step-by-step explanation:

quadrant 1

What 5/8 divided by 1/2 ?

Answers

Answer:

Just use logic :)) 1/2 = 4/8 so divide 5/8 by 4/8 and you get 5/4. :)) Hope thi s helpedStep-by-step explanation:

Answer:

the answer is 1 1/4

hope this helped:)

Step-by-step explanation:

83 fish of 40% of what number of fish? ​

Answers

Answer:

208 fish

Step-by-step explanation:

83/.40 = 208 fish

Last month, a car dealership sold 376 new cars.

38 of those cars were white.

How many white cars were sold last month?

Answers

as per as I can think the answet will be 38

please give me brainliest if my answer is correct

HELP!!!!
2x+y= 20
3x+4y= 40

Answers

Answer:

(8,4)?

Step-by-step explanation:

The ratio of rabbits to guinea pigs in a shop is 2:7. The ratio of brown rabbits to grey rabbits is 2:3.What fraction of the animals in the shop are grey rabbits?

Answers

Answer:2/15

step by step explanation: ratio to rabbits to cats 2:7ratio of brown rabbits to grey rabbits is 2:3 so as a fraction total rabbits 2/9and grey rabbits is 3/52/9 x3/5 =2/15 hope it helped

What is the recursive formula for the sequence:
1350,450, 150, 50

Answers

Answer:

It is being multiple by 3

y=4x+3
2x-3y=21
SHOW YOUR WORK

Answers

Step-by-step explanation:

y = 4x+3

2x-3y = 21

2x -3(4x+3) = 21

2x -12x -9 = 21

-10x = 21 + 9

-10x = 30

x = -3

If you follow a similar approach by drawing a line through point C that is perpendicular to and using the associated defects for ∠A or ∠B instead of ∠C, what are the resulting equations? (Do not go through the complete derivation again, just think about the result you came up with in question 9 and what similar formulas for ∠A or ∠B would look like.)

Answers

Answer:

n

Step-by-step enxplanation:

n

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