What is the solution to this equation? 4- 5k = -21
a.5
b.21
c.17 over 5
4 over 5

Answers

Answer 1

Answer:

k = 5

Step-by-step explanation:

4 - 5k = -21

Transpose and subtract 4 from both sides:

4 - 4 - 5k = -21 -4

-5k = -25

Divide both sides by -5

-5k/-5 = -25/-5

k = 5


Related Questions

Help 20 Points!!!!!!!! IT BETTER BE CORRECT!!!!!!!

Answers

Answer:

first is true

second is false

Answer:

Step-by-step explanation:

if the decimal point in the first question is supposed to mean a plus sign then the answer is true, but if it is anything else then it is false

the second one is false

please help!!! I don't understand this and any help is appreciated!!!! thank you!!

Answers

To find y, you would need to replace x with zero so:
(x-1)^3(x+2)(x-3)^2

(0-1)^3(0+2)(0-3)^2

(-1)^3(2)(-3)^2

(-1)(2)(9)

(-2)(9)

-18 <= so the answer would be (0,-18) which is the 4th choice (and if u don’t mind could u give me brainliest)

a group of teenagers are attending a sports event. the sporting event costs $8 to attend.

Answers

Answer:

lets say there are 4 teens, 8x4= 32 so it would cost $32

Since we don't know how many teenagers there are, let's represent them with a variable t!

8t=cost of "tickets"

Let's say T=7

8*7=56!

56 is the cost!

Define the variables and write a system of equations to represent the given situation do not solve

Jason spent a total of $131 on shirts. Dress shirts cost $28 dollars and T-shirts cost $15 dollars. If he brought 7 shirts how many of each kind did he buy?

Answers

Answer:  28x  + 15y = 131   and x + y =  7   where x is the number of Dress shirt and y is the number of T-shirt.

Step-by-step explanation:

We will represent the number of Dress shirt he bought by x and we will represent the number of T-shirt he bought by y.

We know that he spent 131 so the cost of each dress shirt plus the cost of each T-shirt has to equal  131.  Also, he bought 7 total shirts so x plus y has to equal 7.

28x  + 15y = 131  

x + y =  7

Note: it says don't solve so I didn't solve but if you want to solve use these equations.

Mary bought two doughnuts and a carton of milk for $2.87. The carton of milk was $1.29. How much is one doughnut?
equation

Answers

Answer:

1000000000000000000000000000

Step-by-step explanation:

Answer:

$1.58

Step-by-step explanation:

Sam and Sonya are solving problems. Sam solves 3 problems while Sonya solves 7 problems. In a week, they solved 180 problems! How many problems did Sam solve in a week?

Answers

Answer:

Sam solves 54. I hope this helps with your RSM.

Step-by-step explanation:

18x7=126

18x3= 54

126+54=180

The area of a square ice rink is 400 yd.². What is the perimeter of the rink in yards

Answers

Answer:

80 yd^2

Step-by-step explanation:

Since the formula for squares is s^2, we can use this to set up an equation, which is

s^2=400

If we square root this, we get

s=20

The perimeter formula for a square is 4s, so if we plug in, we end up with 80 yd^2

What is the value of 8 in 0.283

Answers

Answer:

0.08 which is eight hundredths

Step-by-step explanation:

0.283

The 8 in is the hundredths place, so the eight's value is 8 hundredths.

Answer:

the value of 8 is hundredths

what is the value of r for 21-23

Answers

Step-by-step explanation:

the answer is 9=3;/5

40= -1/3(9x+30)+2

Pls solve this in steps and explain

Answers

Answer:

-1/3 x 9x -1/3 x 30 + 2

-3x -10 +2

-3x - 8

Step-by-step explanation:

this is a distributive type of problem you distribute the -1/3 to the 9x and the 30 by distribute i mean multiply. if you dont know how to multiply this use the calculator but you multiply it by the 2 pairs of numbers in the parenthesis and then you just add the 2

Hope the answer helped!!!!!!

Jack drove 325 miles in 5 hours


Jack will drive 520 more miles at the same rate. How long will it take jack to drive the 520 miles?

Answers

Answer:

10 hours

Step-by-step explanation:

Jack will drive for 8 more hours

Hi I really need help thx.

Answers

Answer:

A. KE=1/2; B. KE=4; C. KE=24; D. KE=1

Step-by-step explanation:

A. KE=1/2*1*1²=1/2

B. KE=1/2*2*2²=1*4=4

C. KE=1/2*3*4²=1.5*16=24

D. KE=1/2*8*0.5²=4*0.25=1

Can somebody help me in math please ?

Answers

Answer:

sure

Step-by-step explanation:

Answer:

Sure pooh.

Step-by-step explanation:

If f(x) and r1(x) are inverse functions of each other and f(x)=2x+5 , what is f^-1(8) ?

PLEASE HELP!!

Answers

Answer:

3/2

Step-by-step explanation:

Given y = 2x + 5, let's rewrite the equation in terms of x;

y = 2x + 5 => Bring 5 to the other side

2x = y - 5 => Divide either side by 2

x = (y - 5)/2

If we want to take the inverse, simply swap the variable's positions...

We have y = (x - 5)/2

Now let's determine f^-1(8), substituting for "y" provided y is our inverse, f^-1

f^-1(8) = (8 - 5)/2 = 3/2

Solution: 3/2

help
I don't understand​

Answers

Answer: The answer is 40

Step-by-step explanation: If you use the formula to find the area of a triangle(A=Bh/2) and plug the number in like so(A=8 * 10) you would get 80 then you would divide the 80 by 2 and get 40

PLEASE HURRY: Which value is NOT located between these two numbers on the
number line?

Answers

Answer:

C.) π/9

Step-by-step explanation:

√9/3 = 1

2π ≈ 6.28

The only value that is not between these two numbers is π/9 which is approximately 0.35.

help me pleaseeeeeeeo

Answers

Answer: x=-2

Step-by-step explanation:

First subtract 4 from both sides

Sqrt(x+3)=1

Then square both sides

X+3=1

Then subtract 3

X=-2

Hope this helps!

Answer:

mmm x = -2 and put -2 over the square root on your calculator

Step-by-step explanation:

I hope this is right lol


[tex]0.33333333333333333333333...........[/tex]
as an fraction
q​

Answers

Answer:

[tex]\frac{1}{3}[/tex]  

I hope this helps!

hhhhhhh i need helpp

Answers

Answer:

x<27

Step-by-step explanation:

2(x+x+4)<116

2(2x+4)<116

2x+4<58

2x<54

x<27

Solve for a in the proportion.

Answers

Answer:a=4

Step-by-step explanation:

Answer:

a = 4

Step-by-step explanation:

16 × a = 32 × 2

16a = 64

dividing both sides of the equation by 16 gives

16a/16 = 64 /16

a = 4

d = rt for r

PLS I NEED HELP

Answers

Answer:

r = [tex]\frac{t}{d}[/tex]

Hope this helps!!

Step-by-step explanation:

d=rt can be substituted for t=d/r

3) The Blackweld family is shopping for school uniforms. Pants cost $5
more than skirts. Six skirts cost $4 less than 4 pairs of pants. How much
does 1 skirt cost?

Answers

Answer:

$8

Step-by-step explanation:

Let the pants cost = pSkirts cost = s

We got equations

p = s + 56s = 4p - 4

Substituting p and solving for s

6s = 4(s + 5) - 46s = 4s + 20 - 46s - 4s = 162s = 16s = $8

an agents set a commission of 4percent on the total sales of 14,450.what commission does he get​

Answers

Comission: 4%

total sales: 14,450

; 4% OF 14,450 = 574

Therefore comission he gets is: 574

A real estate agent receives a 3% commission on the sale price of a home.
How much does the real estate agent receive as a commission if the house sells for $232,000?
O $69,600.00
$6.960.00
$696.00
$69.60

Answers

multiply the percent by the money

The graph shows the amount of money Miguel earns after working x hours.

What is the rate of change of the amount earned with
respect to hours worked for this function?

1/13 hours per dollar

2/5hours per dollar

3 dollars per hour

13 dollars per hour

Answers

Answer:

13 dollars per hour ! ^^

Step-by-step explanation:

According to the proportional relationship shown by the graph, the rate of change is of 13 dollars per hour.

What is a proportional relationship?

A proportional relationship is a function in which the output variable is given by the input variable multiplied by a constant of proportionality, that is:

y = kx

In which k is the constant of proportionality, which is also the rate of change.

Considering the graph, the rate of change, in dollars per hour, is given by:

k = 65/5 = 26/2 = 13.

More can be learned about proportional relationships at https://brainly.com/question/10424180

#SPJ5

help me with number one

Answers

Answer:

C. √5

Step-by-step explanation:

The answer is c ok
Step by step equation

the sum of pi and 3/4 is a (n)_________ number

A. Rational

B. Natural

C. Whole

D. Irrational​

Answers

the answer is a.rational

Plzz help it’s simple I’m just stupid
Write a compound inequality that is represented by the graph.

Answers

Answer:

x < -7 or x > -4

Step-by-step explanation:

what is 2.16666666667 as a whole number

Answers

2 is your answer I hope

which would you buy a 2 liter bottle or juice for 2.50 or a 1 liter bottle of juice for 1.50$​

Answers

Answer:

2 liter bottle

Step-by-step explanation:

Answer: the 2 liter bottle

Step-by-step explanation:

you need to get to the unit number so divide 2.50 and it is 1.25 and then you know that is cheaper than 1.50 so it is a better option

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