use the working backword method to find the solution of the equation
4y-1=7

Answers

Answer 1
You'd do plus 1 cause that the backward way then add one to seven also and you'll have 4y=8 then divide 4 to each side so y=2
Answer 2
4y-1=7

Basiclly, you need to add one to the other side and subtract one from the original side so there is just 4y there.

That leaves you with 4y=8

Then divide both sides by four so there is no number by y. 8/4 is 2.
y=2.   

And when you check your answer, 4(2)-1=7
                                                          8-1=7
                                                             7=7
                                                  The answer is true.


Related Questions

when jackson works more than 40 hours in a week , he earns 1.5 times his normal hourly rate for each of the extra hours. jackson worked 43 hours one week. what was his total pay before deductions? justify your answer.

Answers

Final answer:

To determine Jackson's total pay before deductions, we calculate his regular pay for 40 hours and his pay for the extra hours he worked.

Explanation:

To calculate Jackson's total pay before deductions, we need to determine his regular hourly rate and the number of extra hours he worked.

First, we need to calculate Jackson's regular pay for 40 hours. Let's say his regular hourly rate is $10. So, his regular pay for 40 hours would be $10 x 40 = $400.

Next, we need to calculate his pay for the extra 3 hours he worked. Since he earns 1.5 times his normal hourly rate for each extra hour, his pay for 3 extra hours would be 3 x ($10 x 1.5) = $45.

Therefore, Jackson's total pay before deductions for the week would be $400 (regular pay for 40 hours) + $45 (extra pay for 3 hours) = $445.

Please help me fast pleaseeeee

Answers

H. If a number is less than one and you multiply it, it will decrease in value.

Tom has a can of paint that covers 37 1/2 square meters. Each board on the fence has an area of 3/16 square meters. How many boards can he paint?

Answers

you are going to want to divide the numbers which you can do by converting them both into fraction then inverse (flip upside down) the second number if you would like more help then that just ask 

Solve the question m/5= 5 what’s M

Answers

if you have m/5 = 5, then M would have to be divisible by 5, and in this case the square of five. So the answer is m = 25. 

Hope this helps!

m/5=5 
m is 25
25/5 is five
hope this helps

how can you use mental math to determine if a ratio is simplified

Answers

You can see if it is simplified by checking if the numbers can be divided with the same number. Typically, this is done mentally.
Ex: You can mentally determine that 10:4 is not simplified, because both can be divided by 2.
You can then determine that 5:2 is simplified.

A fossil is 254 millimeters long. How many meters long is the fossil? Enter your answer, as a decimal, in the box.

Answers

1mm = 0.001 meter

254 x 0.001 = 0.254 meters long


1000milimeter=1meter
divide both sides by 1000
1mm=1/1000m
times both sides by 254
254mm=254/1000m
254mm=25.4/100m
254mm=2.54/10m
254mm=0.254/1m
254mm=0.254m

it is 0.254 meters

Tina wants to use rope to decorate a rectangular picture frame. The frame measure 13 inches wide and 23 inches tall. Tina has 7 feet of rope. Does she have enough rope to go around its perimeter of the frame? Explain. Remember, 1 foot = 12 inches.

Tina has 7 feet of rope and the perimeter is __ feet. So, Tina ____ (Does not, Does) have enough rope.

Answers

The perimeter is 6 feet. So, Tina Does have enough

What is the successor of the number 2012

Answers

Successor: number after natural number.
Ex: You are given 9 as the natural number. All you have to do is add 1. So, 9+1=10. The successor of 9 is 10.
Back to your question, 2012+1=2013.
2013 is 2012's successor.

From Mason's house, it takes 10 1⁄2 hours to drive to Los Angeles. If Mason has already driven for 7 1⁄4 hours, how many hours remain until he reaches Los Angeles?

Answers

10.5 - 7.25 = 3.25.
3 1/4 hours.

Mason has 3 1/4 hours of driving remaining to reach Los Angeles.

To calculate the remaining time Mason needs to drive to reach Los Angeles, we subtract the time he has already driven from the total travel time. Mason's total drive time to Los Angeles is 10 1/2 hours, and he has driven for 7 1/4 hours already.

Firstly, we convert the mixed fractions to improper fractions for easy subtraction:

Total drive time: 10 1/2 hours = (10 * 2 + 1) / 2 = 21/2 hours

Time driven: 7 1/4 hours = (7 * 4 + 1) / 4 = 29/4 hours

Now, let's subtract the time driven from the total drive time:

(21/2) - (29/4) hours = (42/4) - (29/4) hours = 13/4 hours

Converting the improper fraction back to a mixed number, we get:

13/4 hours = 3 1/4 hours

Therefore, Mason has 3 1/4 hours remaining until he reaches Los Angeles.

How many pieces of cake have you and your 3 friends eaten out of1/2 of an eaten cake?

Answers

There is about 8 pieces of a whole cake. So if half of the cake is eaten that means that there is 4 pieces of cake left. There are 4 people that will eat the cake. So the entire cake will be gone
they each get 2 slices

When 12 is subtracted from 3 times a number, the result is 24. Find the number

Answers

I believe the answer to this s 60

3n -12 = 24

3n - 12 (+ 12) = 24 (+ 12)

3n = 36

3n/3 = 36/3

n = 12

hope this helps

what are the answers??

Answers

2x + 5x + 4 = 25
7x + 4 = 25
7x +4 (-4) = 25 (-4)
7x = 21
7x/7 = 21/7
x = 3

26 = 3b - 2 - 7b
26 = 4b - 2
26 + 2 = 4b - 2 (+2)
28/4 = 4b/4
b = 7

5m/8 - 6/8 +3m/8 = 2/8
8m/8 = 8/8
m = 1

hope this helps

Suppose that you have a data set containing 1000 tests scores. How many scores would you expect to find matching each description?

Answers

70% because that is average grade

An angle has a measure of 47 degrees. Find the measure of its supplement

Answers

hello :
the  measure of  supplement An angle has a measure of 47 is : x
x°+47°=180
x° = 180° - 47° 
x° = 133°

What information is missing? A parking structure has 3 levels. there are 47 cars on the first level and 61 cars on the third how many cars are on the second level

Answers

missing info is probably the total number of cars in the parking structure

Add or subtract.write each sum or difference in simplest form.

11. 3/8 + 5/24

12. 1/20 + 5/12

13. 9/20 - 1/4

14. 9/10 - 3/14

15. 3 3/8 + 5/12

16. 5 7/10 - 5/18

Answers

#11 3/8+5/24=14/24= 7/12

#12 9/20-1/4=9/20-5/20=4/20=

Use the Greatest Common Factor and the Distributive property to express the sum as a product 20+35 18 + 27 64 + 40

Answers

Final answer:

To express sums as products, find the Greatest Common Factor (GCF) of each sum and factor it out, then use the Distributive Property to write the expression as a product.

Explanation:

To express the sums 20+35, 18+27, and 64+40 as products using the Greatest Common Factor (GCF) and the Distributive Property, we need to find the GCF of each pair of numbers and factor it out.

For 20+35, the GCF is 5, so we can write it as 5(4+7).For 18+27, the GCF is 9, so we can write it as 9(2+3).For 64+40, the GCF is 8, so we can write it as 8(8+5).

By applying the Distributive Property, we are effectively grouping the common factor outside of the parentheses and leaving the sum of the divided terms inside.

Angela is competing in a dance competition. If dance move is done correctly, the dancer earns points. If a dance move is done incorrectly the dancer loses points. Angela currently has 200 points. Angela then loses 30 points and earns 70 points. Write and evaluate an expression to find Angela’s final score

Answers

you have to do (200-30) + 70 =240

Answer:

(200-30) + 70 =240

Step-by-step explanation:

Math help plz!!!

There is an average of 3.5×10^−2 kilograms of dissolved salt in each liter of seawater. The South China Sea contains approximately ​ 9.88×10^18 ​ liters of seawater.

About how many kilograms of dissolved salt are in the South China Sea?

Enter your answer, in scientific notation, in the boxes.

__ x 10^__ kg

Please help and thank you!

Answers

Answer:

3.458 × 10¹⁷

Explanation:

We multiply the amount of salt per liter, 3.5×10⁻², by the amount of sea water in the South China Sea, 9.88×10¹⁸:

(3.5×10⁻²)(9.88×10¹⁸)

Multiplication is commutative; this means we can switch around the numbers we are multiplying:

(3.5×9.88)(10⁻²×10¹⁸)

Multiplying the numbers in the first set of parentheses, we have 34.58.

To multiply the powers of 10, we use the product property; it states that if we multiply powers that have the same base, we add their exponents:

10⁻²×10¹⁸ = 10⁻²⁺¹⁸ = 10¹⁶

This gives us 34.58 × 10¹⁶.  In scientific notation, the decimal must be behind the first non-zero digit; this gives us 3.458.  When we move the decimal again, we add 1 to the exponent; this gives us 3.458 × 10¹⁷

The kilograms of salt in the South China Sea is required.

The amount of salt in the South China Sea is [tex]3.458\times 10^{17}\ \text{kg}[/tex]

The amount of salt in 1 liter of seawater is [tex]3.5\times 10^{-2}\ \text{kg}[/tex]

[tex]1\ \text{liter of seawater}=3.5\times 10^{-2}\ \text{kg of salt}[/tex]

The volume of seawater in the South China Sea is [tex]9.88\times 10^{18}\ \text{L}[/tex]

[tex]9.88\times 10^{18}\ \text{liters of seawater}=9.88\times 10^{18}\times 3.5\times 10^{-2}=3.458\times 10^{17}\ \text{kg}[/tex]

The amount of salt in the South China Sea is [tex]3.458\times 10^{17}\ \text{kg}[/tex]

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The measure of an exterior angle of a regular polygon is 15°. What is the sum of the measures of the interior angles of the polygon?

Answers

First thing you must do is find the number of sides of the polygon.
The sum of all the exterior angles of a polygon is always 360°.
360/15 = 24
The polygon has 24 sides.

The formula for the sum of the interior angles of a polygon is:
180(n - 2)
Where n is the number of sides.

180(24 - 2)
180(22)
3960

The sum of the measure of the interior angles of the polygon is 3960.
Final answer:

The sum of the measures of the interior angles of a regular polygon, where the measure of an exterior angle is 15°, is 3960°.

Explanation:

To answer your question about the sum of the measures of the interior angles of the regular polygon, we can use the formula for computing the sum of the measures of the interior angles of a regular polygon, which is (n-2) * 180 degrees, where 'n' is the number of sides in the polygon.

In a regular polygon, the measure of each exterior angle is equal to the total of 360° divided by the number of sides. Given that the measure of the exterior angle is 15°, we can find 'n' using the equation 360°/n = 15°, which gives us n=24.

Substituting n=24 in the formula for computing the sum of the interior angles, we get (24-2)*180 = 22*180 = 3960°. Hence, the sum of the measures of the interior angles of the polygon is 3960°.

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jose needs at least $95 to go on the class trip, he has saved $15 , he makes $20 for each lawn he mows . write an solved inequality to determine how many lawns jose needs to mow together .

Answers

15 + 20x > = 95
20x > = 95 - 15
20x > = 80
x > = 80/20
x > = 4 <== so he needs to mow at least 4 more lawns
95 = 20x + 15
95 (-15) = 20x + 15 (-15)
80/20 = 20x/20
4 = x

Jose needs to mow 4 lawns

hope this helps

If a bath measures 42 inches by 48 inches, what is the square footage of the bath?

Answers

Area = Width * Length:
42*48 = 2016in²

The area of the bath is 2016in²

Hope this helps! :)
To get square footage of the bath, multiply the two dimensions (the length and width) together.

42 * 48 = 2016

So, the answer is 2016 square inches.

9. what is the solution to
(4 x 10^3) x (6 x 10^6)
written in scientific notation?
A. 24 x 10^9
B. 2.4 x 10^9
C. 24 x 10^18
D. 2.4 x 10^10
Please I'm struggling please help

Answers

The correct answer is D
my teacher told me yesterday only. Don't worry. mark as brainlieat

Answer:

D. 2.4 x 10^10

<3 Enjoy,

    Dea

Which value of c would make the following expression completely factored?

8x + cy

a. 2
b. 7
c. 12
d. 16

Answers

b). 7 is the correct answer

For c = 7, the expression 8x + cy is completely factored.

The correct answer is an option (b)

What is an expression?

"It is a mathematical statement with a minimum two numbers or variables and at least one mathematical operation. "

For given example,

We have been given an expression 8x + cy

We need to find the value of c that would make the given expression completely factored.

For c = 2,

⇒ 8x + cy

= 8x + 2y

= 2(4x + y)                         ..............(Factor out common term)

This means c = 2 is not the required value.

For c = 12,

⇒ 8x + cy

= 8x + 12y

= 4(2x + 3y)                         ..............(Factor out common term)

This means c = 12 is not the required value.

For c = 16,

⇒ 8x + cy

= 8x + 16y

= 8(x + 2y)                         ..............(Factor out common term)

This means c = 16 is not the required value.

For c = 7,

⇒ 8x + cy

= 8x + 7y, which is completely factored

This means c = 7 is the required value of c.

Therefore, for c = 7, the expression 8x + cy is completely factored.

The correct answer is an option (b)

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A group of 19 students want to see the show at the planetarium. Tickets cost $11 for each student who is a member of the planetarium's frequent visitor program and $13 for each student who is not a member. The total cost of the students tickets is $209. Joining the frequent visitor program at the planetarium costs $5 per year. Write an equation that can be used to determine n, the number of visits per year for which the cost of being a member of the frequent visitor program is equal to the cost of not being a member.

Answers

The answer would be 6 because you divide to get your answer then you multiply by 3 and get your answer

Find the H.C.F of the following expression 39x^7y^3z and 91 x^5y^6z^z7

Answers

HCF of 39 and 91  is 13

od x^7 and x^5  its x^5
of y^3 and y^6  its y^3
and of z and z^7  its z

So the HCF is 13x^5y^3z  Answer.

13x⁵y³z is the HCF of two given expressions.

What is the highest common factor?

The HCF (Highest Common Factor) of two or more numbers is the greatest number among all the common factors of the given numbers. The HCF or GCF of two natural numbers x and y is the largest possible number that divides both x and y without leaving any remainder.

The given expressions are 39x⁷y³z and 91x⁵y⁶z⁷.

Here, the numbers 39 and 91 divisible by 13.

The factor x⁵y³z can divide both the expressions

So, HCF of two given expressions is 13x⁵y³z

Therefore, the HCF is 13x⁵y³z.

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x^3 = 125 over 27 CAN I PLEASE GET HELP

Answers

x^3= (125/27)

To find the answer, find the cube root of both sides
x= ∛(125/27)

∛(125/27)= (∛125)/(∛27) = 5/3

Final answer: 5/3
it is true that 3×3×3=27 so the cubed root of 27 is 3 how about the cubed root of 125

rx + sx/t = 1
solve for x

Answers

(rx + sx) / t = 1....multiply both sides by t
rx + sx = t...factor the left side
x(r + s) = t ...divide both sides by (r + s)
x = t / (r + s) <===

abx - cdx = 15m...factor left side
x(ab - cd) = 15m...divide both sides by (ab - cd)
x = (15m) / (ab - cd) <====

An equation is formed of two equal expressions. The value of the x in the two equation is x=t/(r+s) and x=15m/(ab-cd).

What is an equation?

An equation is formed when two equal expressions are equated together with the help of an equal sign '='.

A.)

(rx + sx) / t = 1

Multiply both sides of the equating by t,

[(rx + sx)/ t] × t = 1 × t

rx + sx = t

Take x as the common factor from the left side of the equation,

x(r + s) = t

Divide both sides the sides of the equation by (r + s)

(r+s)x/(r+s) = t/ (r + s)

x = t/ (r + s)

B.)

abx - cdx = 15m

Take x as the common factor from left side of the equation,

x(ab - cd) = 15m

Divide both sides of the equation by (ab - cd)

(ab - cd)x / (ab - cd) = (15m)/(ab - cd)

x = 15m/(ab - cd)

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4. What is the equation of a line with a slope of 5 that passes through the point (4,2) ? Express this equation in all three forms: point-slope, slope-intercept, and standard.

Answers

slope = 5
y = mx + b
2 =5(4) + b
b = 2 - 20
b = -18


point-slope equation
y - 2 = 5(x -4)

slope-intercept equation
y = 5x - 18

standard form
5x - y = 18
Incase you did not know, f(x) is a way of writing equations, for lines, if you do not know what the equation is.

2 = f(4)
f(x) = 5x-c
f(4) = 20-c
c = 20-2 = 18
f(x) = 5x-18

thus...
y = 5x-18

also...
the y intercept is -18

sum of two numbers is 39. the greater number is 7 more than the smaller number. ( set up an equation )

Answers

Let the two numbers be x and y with x being the greater number.

Given,

x = 7 + y 

Also given,

x + y = 39

Substituting the value of x from above,

7 + y + y = 39

7 + 2y = 39

2y = 39 - 7

2y = 32

y = [tex] \frac{32}{2} [/tex]

y = 16

x = 7 + y

x = 7 + 16

x = 23

Hence, the two numbers are 23 and  16.

x + y =39

x = y+7

y+7 +y = 39

2y +7 = 39

2y =32

y = 32/2 = 16

x = 16+7 = 23

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