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
Reika [66]
4 years ago
12

Christopher earned $78 at his job when he worked for 2 hours.

Mathematics
2 answers:
Grace [21]4 years ago
5 0

Answer:

1 hour/39 dollars

Step-by-step explanation:

So we need to find the unit rate in hours per dollar

Lets replace per with a division sign

We know that 2hours=$78

So we can divide 2 and 78 to get unit rate

78/2=1/39

1 hour/$39

Hope this helps!

morpeh [17]4 years ago
4 0

Answer:

1 dollar every 1/39 hour

Step-by-step explanation:

If Christopher earns $78 in two hours, he must earn $39 dollars in one hour because 78/2 is 39. Therefore, every hour Christopher earns $39. To find the amount of hours per dollar, divide 1, the hour, by 39, the money per hour, to get 1/39.

You might be interested in
Find the value of the expression below. Express your answer in scientific notation.
nirvana33 [79]

The value of the expression is 8.8 \times 10^{-2}.

Solution:

Given expression:

$\frac{\left(4.8 \times 10^{8}\right)}{\left(1.2 \times 10^{4}\right)} \times\left(2.2 \times 10^{-6}\right)

<u>To find the value of the given expression:</u>

Using exponent rule: a^m\times a^n=a^{m+n}

$\Rightarrow\frac{\left(4.8 \times 10^{8-6}\right)}{\left(1.2 \times 10^{4}\right)} \times\left(2.2 \right)

$\Rightarrow\frac{\left(4.8 \times 10^{2}\right)}{\left(1.2 \times 10^{4}\right)} \times\left(2.2 \right)

Using exponent rule: \frac{a^m}{a^n} =a^{m-n}

$\Rightarrow\frac{\left(4.8 \times 10^{2-4}\right)}{1.2} \times 2.2

$\Rightarrow\frac{\left(4.8 \times 10^{-2}\right)}{1.2} \times 2.2

Since \frac{4.8}{1.2}=4

$\Rightarrow(4 \times 10^{-2})\times 2.2

$\Rightarrow 8.8 \times 10^{-2}

Hence the value of the expression is 8.8 \times 10^{-2}.

7 0
3 years ago
opal strated working on her art project at 2:25pm. she worked for 50 minutes. what time did she finish?​
seropon [69]

Answer:

3 : 15pm

Step-by-step explanation:

2 : 25 pm + 50 minutes

2 : 25 pm + (35 minutes + 15 minutes)

(2 : 25 pm + 35 minutes) + 15 minutes

3 : OO pm + 15 minutes = 3 : 15 pm

8 0
3 years ago
What is the distance between the points (2, 1) and (14, 6) on a coordinate<br> plane?
Anettt [7]

Answer:

√169 OR 13

Step-by-step explanation:

D= √(14-2)^2+(6-1)^2

D= √12^2=5^2

D= √144+25

D= √169 AKA 13

8 0
3 years ago
Read 2 more answers
PLEASE HELP ASAP
tresset_1 [31]
Cost times 1.28 gives total cost
5 0
3 years ago
Prove that the point [1,2] is equidistance from the point [4,-2], [5,-1] and [-2,6] ​
fgiga [73]

Step-by-step explanation:

Proof: equidistance means at an equal distance from two points

so: Take the distance formula and then plug the values in and compare.

3 0
2 years ago
Other questions:
  • A/b ∙ b/2a
    6·1 answer
  • Marianna buys a snack combo for $2.50 if the sales tax rate is 8% what is the total price of the combo including tax
    6·1 answer
  • How do I do this, I really need help to understand
    12·1 answer
  • Write 6,730,000 in scientific notation
    12·1 answer
  • Find x and the measures of the indicated parts.
    8·1 answer
  • Tara baked 6 1/3 dozen cookies. She sold 3 1/2 dozen of the cookies she made. How many dozens of cookies does Tara have remainin
    15·1 answer
  • If the area of a right-angled triangle is 47 56 cm and its height is 11.6 cm. finds its base.​
    12·1 answer
  • The sum of three consecutive even integers is<br> 312. Find the Integers.
    6·1 answer
  • Only answer if you know:( plz help quick
    12·2 answers
  • NO LINKS!!! Kim invested $5000 in Mutual fund at 6% compounded quarterly. Write an equation to represent this situation. When wi
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!