1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Natalka [10]
3 years ago
7

How do you solve this?

Mathematics
2 answers:
Afina-wow [57]3 years ago
5 0
C is equal to (30 x t) + 40
C = 30t + 40
we are given that C = 240
280=30t + 40
solve for t
t = 8 hrs
vovangra [49]3 years ago
4 0

a) C = 40 + 30t

b) 280 = 40 + 30t

30t = 240

t = 8

The plumber worked 8 hours

You might be interested in
Find the area of the figure. Use 3.14 as π.
Karolina [17]

Answer: D. 94.25 in²

Step-by-step explanation:

To find the total area, we will break the shape up into two different parts.

[] The rounded part is 39.25 in². Let us assume the rounded part is exactly half of a circle.

      Area of a circle:

A = πr²

      Use 3.14 for pi:

A = (3.14)r²

      Find the radius:

d / 2 = r, 10 / 2 = 5 in

      Subsittue:

A = (3.14)(5)²

A = 78.5 in²

      Divide by 2 since it is only half:

78.5 in² / 2 = 39.25 in²

[] The triangle is 55 in².

      Area of a triangle:

A = b*h/2

A = 11 * 10 / 2

A = 110 / 2

A = 55 in²

[] Total area. We will add the two parts together.

55 in² + 39.25 in² = 94.25 in²

7 0
2 years ago
Read 2 more answers
What does it mean to say that a data point has a residual of 0
Elina [12.6K]
<span>It means that the point lies directly on the regression line.
</span>
4 0
3 years ago
Which ordered pairs are in the solution set of the system of linear inequalities? y &gt; Negative one-thirdx + 2 y &lt; 2x + 3
Natasha2012 [34]

Answer:

Option ( A ) is the answer at (2, 2), (3, 1), (4, 2)

Step-by-step explanation:

3 0
3 years ago
What should be added to 3 to make the sum of 0?
garri49 [273]
Well if you have three and add negative 3 it equals 0

5 0
3 years ago
Read 2 more answers
There are 12,boys and 10 girls in your gym class. If 6 boys joined the class, how many girls would need to join for the ratio to
Savatey [412]
6 girls would need to join for the ratio to be the same
5 0
3 years ago
Read 2 more answers
Other questions:
  • How do I solve for x?
    8·1 answer
  • What is the value of G? Round only your answer to the nearest tenth.
    8·1 answer
  • What is the answer to -5x+7y=11<br> -5x+3y=19
    10·2 answers
  • HELP QUICK PLEASE!!!
    11·1 answer
  • What is the leading coefficient of the polynomial? 7x + 10x2 + 3x3 − 5 A) −5 B) 10 C) 3 D) 7
    9·1 answer
  • Pls help will give brainlist
    7·2 answers
  • Use inequalities to describe yh3 shaded area​
    11·1 answer
  • ❗❗❗❗❗❗HELP THIS IS MATH AND I NEED EXTREME HELP❗❗❗❗❗❗❗
    6·1 answer
  • Nuka is weaving beaded strips. The double number line shows that they can weave 7 \,\text{cm}7cm7, start text, c, m, end text of
    7·1 answer
  • The sequence consisting of all natural numbers from 25 to 999 is given as follows.
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!