YEAR 9 MATHS PLEASE HELP ME The pictures are in order - first being dwayne's and second being ivor's Dwayne Pipes uses this formula to work out the cost of a plumbing job in pounds.
Ivor Wrench uses this formula to work out the cost of a plumbing job in pounds. A job of x hours costs the same with Dwayne and Ivor.
Set up and solve an equation to work out x .
X=.........

Answers

Answer 1

Answer:

The solution is: x = 10/3 hours

What is the equations with one variable?

An equation with one variable is a mathematical statement that involves an unknown quantity represented by a letter, usually x, and an equal sign, where the expressions on both sides of the equal sign have the same value.

We need to set up an equation using the given information to solve for x.

Let's start with Dwayne's formula:

Cost = 30x + 50

And Ivor's formula:

Cost = 45x

Since a job of x hours costs the same for both Dwayne and Ivor, we can set their formulas equal to each other:

30x + 50 = 45x

Simplifying and solving for x:

50 = 15x

x = 50/15

x = 10/3 hours

Therefore, the solution is: x = 10/3 hours

To learn more about equations with one variable, Visit

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Which expressions are equivalent to 4(4a+5) ?Choose 3 answers: (Choice A) 16a+5 (Choice B,) 16a+20 (Choice C) 12a+20+4a (Choice D,) 2(8a+10) (Choice E) 16a+5+4
220kg to lb please it's homework

Two numbers have these properties.Both numbers are greater than 8.
Their highest common factor (HCF) is 8.
Their lowest common multiple (LCM) is 80.
Find the two numbers, writing your answers on one line in the form,
The two numbers are ... and ...

Answers

Answer:

16 and 40

Step-by-step explanation:

Let the numbers be x and y

HCF is 8, so both numbers are multiples of 8 ⇒ x = 8n, y = 8m

As per property of numbers, the product of numbers is equal to product of their LCM and HCF:

xy = HCF(x,y) × LCM(x,y)

Since LCM(x,y) = 80 we have:

8×80 = xy
8×80 = 8n×8m
10 = nm

Possible option:

n = 2, m = 5

Then the numbers are:

x = 2*8= 16
y = 5*8 = 40

Add. Write your answer in simplest form.
2/5+2/5+3/5

Answers

Hello,

2/5+ 2/5 + 3/5= 7/5
=================

7/5 in simplest form

If f(x)= -x^2 - 1, and
g(x)=x + 5, then

g(f(x))=___x^2+___x+___

Answers

Answer:

Step-by-step explanation:

g(f(x))

g(-x^2 - 1)

-x^2 + 0x + 4= -x^2 + 4

How many hours between 8:15 to 12:45 ?

Answers

4.5
an hour to 9:15
one to 10
one to 11
one to 12
and .5 to 1215 to 1245

Subtract:

12h 45' -
08h 15'
-----------
04h 30'

Question 3! How to do it?

Answers

Hello,

x/6=tan 60°==>x/6=√3==>x=6√3

Answer B

A movie rental store charges a membership fee of $10.00 plus $1.50 per movie rented. What is a possible domain that shows the cost to a member of renting movies?A. The domain is all integers.

B. The domain is all even integers.

C. The domain is all integers 0 or greater.

D. The domain is all integers 10 or greater.

Answers

The domain is all integers 10 or greater. This is because the working equation for the statement is movie renting = 10 + 1.5 x(movie renting). With that equation there is a minimum of 10.