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
MAVERICK [17]
3 years ago
7

Peter works part time for 3 hours every day and Cindy works part time for 2 hours every day.

Mathematics
2 answers:
8090 [49]3 years ago
5 0

Answer:

Givens:

  • Peter 3 hours every day.
  • Cindy works 2 hours every day.
  • Each of them get $4.50 per hour.

So, from the problem we can deduct that Peter earns $4.50(3 hours/day) = $13.50 per day. And Cindy earns $4.50(2 hours/day) = $9.00 per day. Therefore, Peter daily earning are higher than Cindy's, this can be expressed with the following inequality:

Peter's daily earnings > Cindy's daily earnings

$13.50 > $9.00

On the other hand, if Cindy earns at least $14 per day, that means she earns $14/2 hours per day = $7 per hour, because she only works 2 hours each day. But, the problem says "at least", so the correct expression would be

Cindy's \ earning \geq 7 \frac{\$}{hour}

Darina [25.2K]3 years ago
3 0

Answer:

A) 13.50>9.00

B) $7

Step-by-step explanation:

A) 4.50*3=13.50 (Peter) 4.50*2=9.00 (Cindy)

B) Cindy would have to earn $7 an hour if she works 2 hours per day because 7*2=14

You might be interested in
What kind of energy does fungi and bacteria help transform?
IRINA_888 [86]
<span>Biomass is the matter in living organisms. Biomass contains chemical energy. When organisms die, chemical compounds in their biomass break down. Bacteria, fungi, and other organisms help change these chemical compounds into simpler chemicals. These simpler chemicals are used by other living things, And chemical energy is the energy that helps in transformation of fungi and bacteria</span>
8 0
3 years ago
The temperature in the ice rink must stay below 50°F this morning the temperature was 71 Degrees Fahrenheit the icing runs a coo
ahrayia [7]

Answer:

The temperature needs to decrease 71° - 50° = 21° that at least not greater than 50°F

As we know, the device decrease the temperature down 3.5° every hour, so

21 : 3.5 = 6 hour

Call x is the hours we need to wait to let the device decrease, we have

x > 6

3 0
3 years ago
The terms shown below are the first three terms of a geometric sequence whose common ratio is positive.
vichka [17]

Answer:

a. 4

b. 5

Step-by-step explanation:

a. r = √(112/7) =√16 =4

b. 4x+8 = 28

4x = 28-8

4x = 20

x= 5

3 0
3 years ago
You are building a frame for a window. The window will be installed in the opening shown in the diagram. Determine whether the o
Elis [28]

Answer:

The opening is a rectangle

AC = 18 in

BD = 18 in

Step-by-step explanation:

9+9 = 18

since the diagonals are equal, it is a rectangle.

6 0
3 years ago
Is y=7.5x a proportional relationship and why
DerKrebs [107]
Direct Proportion functions look like this:

y=kx

'k' is the constant of proportionality and in this case its 7.5 or 15/2.

--------------------------------------------

When x=1, y=7.5
When x=2, y=15
When x=3, y=22.5

Therefore y is directly proportional to x.

--------------------------------------

DIRECT PROPORTION EXPLAINED:

Say a football costs £7.50. If you buy one football you'll have to pay out £7.50, but if you you buy two footballs you'll have to pay out £15.00. Therefore the cost of the football(s) is directly proportional to the amount of footballs you buy. C=cost, f=football(s) and C<span>∝f, therefore C=kf, but as k=7.5, C=7.5f.

INVERSE PROPORTION EXPLAINED:

If it were to take 8 hours for one bricklayer to set up a wall, how long would it take for two bricklayers to set up a wall? The answer in this case would be 4 hours.

T=time to set up a wall
b=bricklayer(s)

Therefore T</span><span>∝1/b, and T=k/b. In this case k=8 so T=8/b.

When b=1, T=8.
When b=2, T=4.

We'd say that the time it would take for bricklayers to set up a wall would be inversely proportional to the amount of bricklayers available.</span>
4 0
3 years ago
Other questions:
  • Please help ! The choices are <br> 11<br> 65<br> 8<br> 44 <br> :)
    14·1 answer
  • This graph represents a function true or false ?
    7·1 answer
  • The length of a poster is 4 feet long how long is the poster in inches
    10·1 answer
  • a bookstore ownwr wants to know which department to expand. manager A surveys every 3rd teenager that comes in the store. manage
    14·1 answer
  • Evaluate 15/r -1 when r = 5
    15·2 answers
  • Evaluate the following expression for the given values of the variables. Please explain i’m really struggling with this! 3m - 4n
    10·2 answers
  • QUICK PLEASE !!!!!
    11·1 answer
  • Mario’s company makes unusually shaped imitation gemstones. One gemstone had 10 faces and 11 vertices. How many edges did the ge
    9·1 answer
  • The value of 7m−3 is half as big as the value of 12m+1
    8·2 answers
  • The area of cross section of the end A of a U tube is 0.01 m square. The area of cross section at the end B is 0.1 m square. If
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!