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qwelly [4]
2 years ago
6

A plumber charges $70 per hour plus $40 for the call. What does he charge for 4 hours of work? What's the dependent, solution, i

ndependent, and function
Mathematics
2 answers:
Irina-Kira [14]2 years ago
6 0
440 is teh answer fam
Alex787 [66]2 years ago
4 0
Function:
C(cost) = 70h + 40

Solution:
C = 70(4) + 40
C = 280+40
C = $320
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Please help with 6 and 7
Ilya [14]

Answer:

6. The number is -5

7. The two numbers are 10 and 11

Step-by-step explanation:

Question six can be re-worded to create the following expression:

-2=\frac{4x+10}{5}

Solve for x to find the number:

-2=\frac{4x+10}{5}\\-10=4x+10\\-20=4x\\\frac{-20}{4} = x\\-5 = x

Question seven can be solved by first listing the constraints (assuming x is smaller than y):

  1. x and y are less than 20
  2. x + 1 = y
  3. 3x - 8 = 2y

To get the numbers, we can create a system of linear equations. First, solve for y in each expression:

y = x+1

2y = 3x-8\\y = \frac{3}{2}x - 4

Solve for x:

x+ 1 = \frac{3}{2}x - 4\\x + 5 = \frac{3}{2}x\\5 = \frac{3}{2}x - x\\5 = \frac{1}{2}x\\10 = x

Solve for y:

y = x + 1\\y = 10 + 1\\y= 11

4 0
1 year ago
Read 2 more answers
What is the cost for 4 pizzas?
Brut [27]

Answer:

i think it's $23.96

Step-by-step explanation:

i used calculator

divided $17.97 ÷ 3 to get $5.99

and multiplied $5.99 × 4 to get the possible answer ($23.96)

6 0
2 years ago
Read 2 more answers
Workout and simplify
Step2247 [10]

Answer:

a) ⅖+⅓ = 6/15 + 5/15 = 11/15

b) 5/9 - 1/2 = 10/18 - 9/18 = 1/18

7 0
3 years ago
Read 2 more answers
Given the formula K = LMN, what is the formula for M?
Andre45 [30]
To start off devide both sides by M i.e
K/M=LMN/M
-> K/M=LN
Then devide by K to remove it on the left , this will end you up with M=LN/K
So the answer is (c).
Hope this helps :).
5 0
3 years ago
-3,-7 reflected over the x axis
Aleks [24]

Answer:

The reflected point would be (3,-7)

7 0
3 years ago
Read 2 more answers
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