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
Andrej [43]
3 years ago
15

From the set (76, 77, 78), use substitution to determine which value of x makes the equation true

Mathematics
1 answer:
jeyben [28]3 years ago
7 0

Answer:

The answer is C.

Step-by-step explanation:

Multiply 4 by 76, 77, and 78.

4 * 76 = 304

4 * 77 = 308

4 * 78 = 312

304 = 304, so C is the correct answer.

Hope this helps!

You might be interested in
Starting salaries of 90 college graduates who have taken a statistics course have a mean of $43,993 and a standard deviation of
Rufina [12.5K]

Answer: attached below

Step-by-step explanation:

5 0
3 years ago
Suppose it takes 45 hours for robot A to construct a new robot. Working together with robot B, it takes 25 hours for both robots
Len [333]

Answer:

56 hours 25 minutes

Step-by-step explanation:

Given:

Suppose it takes 45 hours for robot A to construct a new robot

It takes 25 hours for both robots to construct a new robot.

Question asked:

How long would it take robot B to construct a new robot, working alone ?

Solution:

Let the time taken by robot B to construct new robot = x

<u>By robot A</u>

It takes 45 hours to construct = 1 new robot

It takes 1 hour to construct = \frac{1}{45} \ new\ robot

<u>By robot B</u>

It takes x hours to construct = 1 new robot

It takes 1 hour to construct = \frac{1}{x} new robot

<u>By working together</u>

It takes 25 hours to construct = 1 new robot

It takes 1 hour to construct = \frac{1}{25} \ new\ robot

\frac{1}{25} new robot is constructed in = 1 hour

<u><em>New robot is constructed by both working together in 1 hour = New robot is constructed by robot A in 1 hour + New robot is constructed by robot B in 1 hour </em></u>

\frac{1}{25} =\frac{1}{45} +\frac{1}{x} \\

Subtracting both sides by \frac{1}{45}

\frac{1}{25}-\frac{1}{45} =\frac{1}{45} -\frac{1}{45}+\frac{1}{x} \\\\\frac{1}{25}-\frac{1}{45} =\frac{1}{x}\\\\ Taking\ LCM \ of \ 25\ and\ 45,\ we\ got\ 225

\frac{9-5}{225} =\frac{1}{x} \\ \\ \frac{4}{225} =\frac{1}{x}\\\\ By\ cross \ multiplication\\4\times x=225\\Dividing\ both\ sides\ by\ 4\\x=56.25\ hours

Thus, robot B would take 56 hours 25 minutes to construct a new robot, working alone.

4 0
3 years ago
Read 2 more answers
**PLEASE HELP ITS DUE TOMORROW** IMAGE IS FOR QUESTION 1
Fed [463]

For question 1. a five sided shape has 540° , so if you add all the sides up you get 479, so then you do 540 - 479, to get 61°, which is x

so, x° = 61°

5 0
3 years ago
Simplify the following expression 5^2-4/5+2
Sever21 [200]
26 1/5 is the answer i got
8 0
3 years ago
Read 2 more answers
15. A person facing east walks east 20 paces, turns, walks north 10 paces, turns, walks west 25 paces, turns, walks south 10 pac
Reptile [31]

Answer:

oo freeeeeee I was just the same thing in common use today in the vwjabahqjvqio

7 0
3 years ago
Other questions:
  • Find the height of a cylinder that has a radius of 5 m and volume of 450 m3 ?
    5·1 answer
  • Police chases a driver. Originally, the police is 1 mile behind the driver. The speed of the police car is 90 mph, and the speed
    5·1 answer
  • Complete the solution of the equation. Find the value of y when x equals 15.
    15·1 answer
  • What is the solution to the system of linear equations? {2x+4y=38
    6·1 answer
  • James estimated the total cost of groceries to be $50. The actual cost of the groceries is $65. What is the percent error? Round
    14·1 answer
  • Numbers 37 and 39. I’m not sure how to solve them
    8·1 answer
  • Twenty-five percent of the customers entering a grocery store between 5 P.M. and 7 P.M. use an express checkout. Consider five r
    7·1 answer
  • Match the algebraic expressions given below with the verbal phrases.
    14·1 answer
  • Which number line shows the solution to this compound inequality?<br><br> 0 ≤ -2x + 6 &lt; 16
    14·1 answer
  • Define terminating.math​
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!