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
Vsevolod [243]
3 years ago
7

Two mechanics worked on a car. The first mechanic worked for

Mathematics
1 answer:
Temka [501]3 years ago
4 0
Write a system of equations:

x + y = 125

20x + 15y = 2100

Solving:

x = 125 - y

20(125 - y) + 15y = 2100
2500 - 20y + 15y = 2100
2500 - 5y = 2100
-5y = 2100 - 2500
-5y = -400
y=80

x + 80 = 125
x = 125 - 80
x = 45

The first charges 45$ per hour and the second charges 80$ per hour
You might be interested in
A technology manufacturer is a supplier of fiber optic cables. They are interested in expanding their business and offering fibe
ExtremeBDS [4]

Answer:

B.alternative hypothesis

Step-by-step explanation:

In this case, the null hypothesis is that 45% of internet providers currently offer fiber optic internet in the United States.

The claim that the proportion of fiber optic internet providers is different from 45% is an alternative hypothesis since it directly contradicts the null hypothesis presented.

The answer is B. alternative hypothesis

8 0
3 years ago
Hello I Need Some Help I Promise All Give Brainlist If You Are Corecct thank you
polet [3.4K]
The circle: x = 4 y = 0.5
The square: x = 3.5 y = 1.5
The triangle: x = 0 y = 2.5
5 0
2 years ago
There are 10 boys and 8 girls in the chess club at West Middle School. The principal randomly selects one student from the chess
egoroff_w [7]

Answer:

5/9 of a chance

Step-by-step explanation:

or a 55.55- chance

5 0
3 years ago
15.5 × [(2 × 2.4) + 3.2] – 16
ch4aika [34]

Answer:

108

Step-by-step explanation:

5 0
3 years ago
DUE TOMORROW GIVING BRAINLIEST!
Stells [14]

Answer:

I gotcha.

Step-by-step explanation:

Condensation - water which collects as droplets on a cold surface when humid air is in contact with it.

Pressure - continuous physical force exerted on or against an object by something in contact with it.

Temperature - the degree or intensity of heat present in a substance or object, especially as expressed according to a comparative scale and shown by a thermometer or perceived by touch.

Thermal energy - (also called heat energy) is produced when a rise in temperature causes atoms and molecules to move faster and collide with each other. The energy that comes from the temperature of the heated substance is called thermal energy.

<h2>there</h2>
6 0
3 years ago
Read 2 more answers
Other questions:
  • Someone please help!!!!!! ​5−a+4a=
    14·1 answer
  • Can some one help with this one question please
    15·1 answer
  • 1. What percent of 65 is 13?​
    13·1 answer
  • What is the factorization of the trinomial -x2 - 2x +48​
    11·1 answer
  • I need help simplifying each expression
    13·1 answer
  • Help ill give you brainliest
    8·1 answer
  • Single power<br><br> What’s 7^2 x 7^3 written as a single power?
    7·2 answers
  • 7th grade math!<br><br> Divide 20xy^4z^12 by 4x^3yz^24<br><br> Answer options in picture above.
    10·2 answers
  • Helppp pls<br> will give brainliest
    5·2 answers
  • Use the graph. Which equation is true from the information in the graph?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!