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
mrs_skeptik [129]
3 years ago
7

What is the value of the expression 3x-8y when x=10 and y=2?

Mathematics
2 answers:
Greeley [361]3 years ago
7 0

Answer:

14

Step-by-step explanation:

3x-8y

(3*10)-(8*2)

30-16

14

madam [21]3 years ago
3 0

Answer:

30-16

Step-by-step explanation:

You might be interested in
What’s the missing angle <br> ?
fomenos

Answer:

x=20

3x= 3(20)=60

4x= 4(20)=80

Step-by-step explanation:

The angles CD is 90 degrees because the small square indicates

it. Angles AD are a straight angle, therefore all the other angles within A to D, must equal 180 degree. (straight line/angle=180 degrees).

so AB + 70+ 90= 180 degrees

AB= 180 -70-90

AB=20

x=20

3x= 3(20)=60

4x= 4(20)=80

5 0
2 years ago
Read 2 more answers
What is the equation of the circle with center (5,-4) and radius 4
Ede4ka [16]
16 is the right one
4 0
3 years ago
Write an equation that relates the time, t, it takes to travel a given distance, d.
brilliants [131]

The equation that relates the time, t, it takes to travel a given distance, d is d = rt

<h3>What is Speed?</h3>

This is a scalar quantity and can be defined as  the magnitude of the rate of change of its position with time.

d = rt

where d is distance, r is speed or rate, t is time.

We can calculate the time by dividing the distance with the rate (speed).

t =  d/r

This is why it was chosen as the most appropriate choice.

Read more about Speed heere brainly.com/question/4931057

3 0
2 years ago
1. Which would be a more helpful for solving the system: adding the two equations or subtracting
ira [324]

Answer:

1) Subtracting one from the other

2) x = 0.375 and y = 0.125

Step-by-step explanation:

Equation 1 :

\frac{2x+1}{2y}=7\\\\

Equation 2:

\frac{6x-1}{2y}=5

To solve these equations by the Elimination method we multiply equation 1 with 6 and multiply equation 2 with 2 so now,

\frac{2x+1}{2y} =7\\\\2x+1=14y\\\\Multiplying\ Equation\ 1\  with\ 6\\\\12x+6=84y

Now for the second equation:

\frac{6x-1}{2y}=5\\\\6x-1=10y\\\\Multiplying\ equation\ 2\ with\ 2 \\\\12x-2=20y

Now subtracting equation 2 from equation 1

12x+6=84y\\\\12x-2=20y\\\\Subtracting\ leads\ to\\12x-12x+6-(-2)=84y-20y\\0+8=64y\\8=64y\\8/64=y\\0.125=y

now insert this value of y into any equation

lets insert it into equation 1

\frac{2x+1}{2y} =7\\\\2x+1=14y\\2x+1=14(0.125)\\2x+1=1.75\\2x=1.75-1\\2x=0.75\\x=0.75/2\\x-0.375

5 0
3 years ago
Mr. Gengel wants to make a shelf with boards that are 1 1/3 feet long. If he has
PilotLPTM [1.2K]

Answer:

At most Mr.Gengel can cut at most 13 pieces with half a foot left.

8 0
2 years ago
Other questions:
  • Cameron used 1 3|4 ounces of hydrochloric acid in one experiment. She used 2 3|8 ounces of the acid in a second experiment. How
    9·1 answer
  • HELP ME ASAP PLSSSSSSSS
    10·1 answer
  • The equation of line s is y=1/3x-3
    10·1 answer
  • Can someone please help!!!!!!!
    14·1 answer
  • Find two consecutive odd integers whose sum is 176
    13·1 answer
  • What value of x would satisfy the equation 6x-4(2x+1)= 10 as a improper fraction
    11·1 answer
  • What is the width of the rectangle?<br> 30y<br><br> 60y4
    9·1 answer
  • Which expression is equivalent to x + y + x + y + 3 [y + 5]
    5·1 answer
  • It costs the company $1,200 to run a flight, empty or full, from its base airport to Airport X. Additionally, each passenger gen
    6·1 answer
  • PLEASE HELP!!!if the unit rate for the line B is 7meters/seconds , which if the following is not a possible value for the unit r
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!