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Solve each equation for the variable. Show every step in your work

-5x+12=20

Answers

Answer 1

Answer:

x = -(8/5)  or  -([tex]\frac{8}{5}[/tex])

Step-by-step explanation:

-5x+12=20

-5x=20-12

-5x=8

x = -(8/5)  or  -([tex]\frac{8}{5}[/tex])

Answer 2

Answer:

×=(-1.6)

Step-by-step explanation:

First we want to subtract 12

Subtraction property of euality

-5x=8

Division property of equality

x=(-1.6)


Related Questions

Can you helps me put them into each category you can just say the first one is blank and so on

Answers

Answer:

1st: parallel

2nd: perpendicular

3rd: neither

4th: neither

5th: neither

6th: parallel

Step-by-step explanation:

Which is a different way to express 2(w + 3)?

Answers

Answer: 2w+6

Step-by-step explanation: Here you distribute. Simply multiply 2 and w which would get you 2w and 2 by 3 which would get you 6.


In the diagram above, 24 = 240°.
Find the measure of Z3.
23 = [ ? 1°

Answers

Answer:

∠3 = 140

Step-by-step explanation:

∠4 + ∠3 = 180

40 + ∠3 = 180

∠3 = 180 - 40

∠3 = 140

Tia picked 56 ounces of blueberries. She used 8 ounces to make muffins and packed the remaining blueberries into 12-ounce packages. Which expression can be used to find the greatest number of packages of blueberries that Tia packed? ;-;

Answers

4.25.
Do 56-8 then divide that answer by 12

Answer:

4.25

Step-by-step explanation:

PLEASE HELP WILL GIVE BRAINLIEST!!! PLEASEEE NO S P A M!!!!!
The time it takes to fly from Los Angeles to New York varies inversely as the speed of the plane. If the trip takes 5 hours at 950 km/h, how long would it take at 850 km/h?
I know the answer is 5.588 but why like what are the steps to solve it?

Answers

Answer:

Step-by-step explanation:

find distance traveled: [tex]\frac{950 km}{1 hr}*{5 hrs}[/tex] = 4750 kmtotal distance / new speed:     [tex]\frac{4750 km}{850 km/hr} = 5.5882 hrs[/tex]

What is the anti derivative of f'(x)=19x+15?​

Answers

Answer:

Part A:  [tex]\displaystyle f(x) = \frac{19}{2}x^2 + 15x + C[/tex]

Part B:  [tex]\displaystyle f(x) = \frac{19}{2}x^2 + 15x - 5[/tex]

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

BracketsParenthesisExponentsMultiplicationDivisionAdditionSubtractionLeft to Right  

Equality Properties

Multiplication Property of EqualityDivision Property of EqualityAddition Property of EqualitySubtraction Property of Equality

Algebra I

Functions

Function Notation

Calculus

Differentiation

DerivativesDerivative Notation

Differential Equations

Integration

Integrals[Indefinite Integrals] Integration Constant C

Integration Rule [Reverse Power Rule]:                                                               [tex]\displaystyle \int {x^n} \, dx = \frac{x^{n + 1}}{n + 1} + C[/tex]

Integration Property [Multiplied Constant]:                                                         [tex]\displaystyle \int {cf(x)} \, dx = c \int {f(x)} \, dx[/tex]

Integration Property [Addition/Subtraction]:                                                       [tex]\displaystyle \int {[f(x) \pm g(x)]} \, dx = \int {f(x)} \, dx \pm \int {g(x)} \, dx[/tex]

Step-by-step explanation:

Step 1: Define

Identify

[tex]\displaystyle f'(x) = 19x + 15[/tex]

Step 2: Find Antiderivative

[Derivative] Integrate both sides:                                                                 [tex]\displaystyle \int {f'(x)} \, dx = \int {19x + 15} \, dx[/tex][Left Integral] Simplify:                                                                                   [tex]\displaystyle f(x) = \int {19x + 15} \, dx[/tex][Integral] Rewrite [Integration Property - Addition/Subtraction]:               [tex]\displaystyle f(x) = \int {19x} \, dx + \int {15} \, dx[/tex][Integrals] Rewrite [Integration Property - Multiplied Constant]:               [tex]\displaystyle f(x) = 19 \int {x} \, dx + 15 \int {} \, dx[/tex][Integrals] Integration Rule [Reverse Power Rule]:                                     [tex]\displaystyle f(x) = 19 \bigg( \frac{x^2}{2} \bigg) + 15x + C[/tex]Simplify:                                                                                                         [tex]\displaystyle f(x) = \frac{19}{2}x^2 + 15x + C[/tex]

Step 3: Find Particular Solution

Substitute in function value [Function f(x)]:                                                 [tex]\displaystyle 87 = \frac{19}{2}(-4)^2 + 15(-4) + C[/tex]Evaluate:                                                                                                         [tex]\displaystyle 87 = 92 + C[/tex]Solve:                                                                                                             [tex]\displaystyle C = -5[/tex]Substitute in C [General Solution]:                                                               [tex]\displaystyle f(x) = \frac{19}{2}x^2 + 15x - 5[/tex]

Topic: AP Calculus AB/BC (Calculus I/I + II)

Unit: Differential Equations

Where is the function increasing?

Answers

9514 1404 393

Answer:

  A)  1 < x < ∞

Step-by-step explanation:

"Increasing" means the graph goes up to the right. This graph is increasing for values of x greater than 1. (x=1 is a minimum. The graph is decreasing toward the minimum on the left of that value, and increasing from the minimum on the right of that value.)

  1 < x < ∞

Answer:

A if your doing prep

Step-by-step explanation:

math

Find an equation of the line that satisfies the given conditions.
Through (−1, −2); perpendicular to the line 2x + 7y + 6 = 0

Answers

use y=mx+b to find EOL.

if two lines are perpendicular it means their slopes are negative reciprocals of one another. So, if the slope of the given line is 2, the slope of the line we are trying to find is -1/2.

To find “b” (the y-intercept) we have to plug in the given point into y=mx+b with the slope we just found;

y = mx+b
-2 = (-1/2)(-1) + b
-2 = 1/2 + b
-2 - 1/2 = b
-5/2 = b

the EOL is y = -1/2x - 5/2

(a) Explain how the Fundamental Theorem of Algebra is used to determine the number of roots for
2x^2 + 3x +5
(b) What are the roots of 2x^2 + 3x + 5? Show your work. Explain why you chose the method you used to find
the roots.
Answer:

Answers

Answer:

Step-by-step explanation

2x²+3x+5 roots means the zeros

So the method we will use is quadratic formula it's will tell us from the start whether this equation have a real solution no solution or one solution only calculating its discriminant

b²-4ac=3²-4(3)(5)

9-60=-51

If the discriminant is < 0 means the equation have no solution

A plant was 46 centimetres tall. After a month it had grown 7% taller. How tall was the plant after a month?

Answers

Answer:

49.22 centimeters.

Step-by-step explanation:

7% of 46 is 3.22 which means you add 46 to 3.22and u get the answer 49.22

Step-by-step explanation:

The student government snack shop sold 32 items this week. for each snack type, what percentage of all snacks sold where of that type

Answers

Answer:

0.02 Sorry If it isn't right.

Step-by-step explanation:

A number N divided by -9 is -16

Answers

Answer: no

Step-by-step explanation:

algebraic expression for "a number , n, divided by 4 is 4. I

Need help with this question ASAP!!!!!!

Answers

Answer:

47

Step-by-step explanation:

A right triangle is 90 degrees

90-12-31=47

C.18 of the houses are for sale How many houses are for sale?​

Answers

Step-by-step explanation:

18 ..............hope it helps

A farmer plants 22,680 wheat plants in 126 rows. Each row contains the same number of plants. How many wheat plants are in each row?
Help me please

Answers

Answer:

180 plants per row

Step-by-step explanation:

This is a division problem.

When he places 22,680 plants in 126 rows, he is dividing the 22,6980 plants by 126 rows.

22,680/126 = 180

Answer: 180 plants per row

Answer:
180 wheat plants in each row
Step by step explaintion:
22,680 wheat plants ➗ 126 rows = 180 wheat plants per row
Final answer:
180 wheat plants per row or 180 wheat plants in each row

A study found that on average there were 566,000 tweets per hour.
Using this data, how many tweets are there per minute?
A
33, 960,000
B
13,584,000
С
18,866.6
D
9,433. 3

Answers

Answer:  D)   9,433.3

Work Shown:

566,000 tweets = 1 hour

566,000 tweets = 60 minutes

566,000/60 tweets = 60/60 minutes .... divide both sides by 60

9,433.3 tweets = 1 minute

There were roughly 9,433.3 tweets per minute.

John saved $50,000. and wants to put the money into an Index Annuity that pays an average of 8.4% per year, compounded semi-annually. How long will it take him to reach his goal of $1,000,000?

Answers

Answer:

Divide 50,000 by 8.4...get that number and add it to the 50,000, divide again by 8.4 and add back, repeat until you reach 1,000,000... happy adding

A is plotted on a coordinate grid at (-3 1/2,1) choose the correct grid that best shows the location of the point

Answers

Hi there! Please provide the graphs in the question so that I can determine which is the right one.

Answer is c

Step-by-step explanation:

c

Evaluate the expression when a = 4 and c = -4. -a +2c​

Answers

Answer:

-12

Step-by-step explanation:

Answer: -12
-(4)+2(-4)=-12
I hope this helps!!

-16 + (unknown) = -6

Answers

Answer:

10  

Step-by-step explanation:

Determine the slope and y-intercept of the line represented in the table below.

Answers

Answer:

i don't know . i did this in sixth grade and i failed

Step-by-step explanation:

In the table below, x represents miles traveled and y represents the cost to travel by train. Miles, x Cost, y 2 8.50 5 15.25 8 22.00 12 31.00 What is the y-intercept of this function? 2.25 4.00 6.50 17.13

Answers

Answer:

B. 4.00$

Step-by-step explanation:

Answer:

B

Step-by-step explanation:

Help me with this someone, please!

Answers

Answer:

-45 I think

Step-by-step explanation:

6 × (-7) - 3

-42 - 3

-45

Sorry if this is wrong

-45 myyyybhomieeeeeee the guy above u is right

2^{51} mod 22 in words, two to the power of fifty-one mod twenty-two

Answers

Since 2⁵ = 32, and

2⁵ ≡ 32 ≡ 10 (mod 22),

we have

2⁵¹ ≡ 2 • 2⁵⁰ ≡ 2 • (2⁵)¹⁰ ≡ 2 • 10¹⁰ (mod 22)

Now consider 10¹⁰ (mod 22):

10 = 2 • 5

10¹⁰ ≡ 2¹⁰ • 5¹⁰ ≡ (2⁵)² • 5¹⁰ ≡ 10² • 5¹⁰ ≡ 2² • 5¹² (mod 22)

so that

2⁵¹ ≡ 2³ • 5¹² (mod 22)

Now consider 5¹² (mod 22):

5 and 22 are coprime, and ɸ(22) = 10 (where ɸ(n) is the Euler totient function). By Euler's theorem,

5¹² ≡ 5² • 5¹⁰ ≡ 5² • 1 ≡ 25 ≡ 3 (mod 22)

and so

2⁵¹ ≡ 2³ • 3 ≡ 24 ≡ 2 (mod 22)

Another, more tedious method: Start with smaller powers of 2 and look for a pattern.

2 ≡ 2 (mod 22)

2² ≡ 4 (mod 22)

2³ ≡ 8 (mod 22)

2⁴ ≡ 16 (mod 22)

2⁵ ≡ 32 ≡ 10 (mod 22)

2⁶ ≡ 2 • 32 ≡ 2 • 10 ≡ 20 (mod 22)

2⁷ ≡ 2 • 20 ≡ 40 ≡ 18 (mod 22)

2⁸ ≡ 2 • 18 ≡ 36 ≡ 14 (mod 22)

2⁹ ≡ 2 • 14 ≡ 28 ≡ 6 (mod 22)

2¹⁰ ≡ 2 • 6 ≡ 12 (mod 22)

2¹¹ ≡ 2 • 12 ≡ 24 ≡ 2 (mod 22)

2¹² ≡ 2 • 2 ≡ 4 (mod 22)

and so on, with a cyclic pattern of length 10. That is, [tex]2^{10k+1}\equiv2\pmod{22}[/tex] for any integer k ≥ 0. So 2⁵¹ ≡ 2 (mod 22).

There are 4 stars 4 green circles and 7 red circles what's the ratio of blue stars to red circles

Answers

Answer:

4 to 7 *maybe

Step-by-step explanation:

In the function, f(x) = 6x2 – 4 , what is the value of f(-2)?

Answers

Answer:

f(-2) = 14

Step-by-step explanation:

f(-2) = 6(-2) 2 - 4

f(-2) = -12 + 2 - 4

f(-2) = -10 - 4

f(-2) = -14

Please help me I believe the answer is b correct me if I’m wrong

Answers

Answer:

71°

Step-by-step explanation:

h = 71° ( corresponding angles)

please help it’s due today

Answers

Answer:

-3

Step-by-step explanation:

1 - 4 = -3

2 - 1 = 1

(-3) / 1 = (-3)

are the triangles congruent ? if they are state how they are congruent .

Answers

Answer:

Step-by-step explanation:

Not congruent

Better to say that there is not enough information to say, "Triangles are congruent"

what is this graph in equation form​

Answers

Answer:

A linear graph

This is from a linear graph
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