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
sattari [20]
3 years ago
10

3x - y = 7 6x - y = 10 When solving this system of equations by elimination, which could be the resulting equation when a variab

le has been eliminated?
Mathematics
1 answer:
max2010maxim [7]3 years ago
6 0
It depends on which variable is eliminated.

If you multiply the second equation by -1 and eliminate the y:
3x - y = 7
-6x + y = -10
-3x = -3 or x = 1
 
If you multiply the first equation by -2 and eliminate the x:
-6x + 2y = -14
6x - y = 10
y = -4


You might be interested in
Calculate the size of angle DBE.6. Calculate the size of angle DBE.
Lina20 [59]
Angle D = 47’

Angle B = 116’
32 + 32 = 64
180 - 64 = 116’

Angle E = 17’
116 + 47 = 163
180 - 163 = 17


Idk what to do after wards
5 0
3 years ago
What is the value of x in the figure below?
zhenek [66]
Again, nice problem. These are not super easy. You need to imagine the triangles in the figure and relate sides.

For instance: ADC, its hypotenuse is 15

For ABC, it is 20,

so 20/15 is the ratio between both triangles. Now let's choose the side with 'x'

x is one side of ADC, the corresponding side in ABC is 15 (the second longest sides). You need to rotate the triangles, etc ... That's the tricky part :)

So:

20/15 =15/x ----> x = 15*15/20 = 225/20 = 45/4

Which is C

Not sure whether it's too late to help you though!!!!

Also notice that it's kind of a product rule:

x * 20 = 15 * 15

I am sure the book explains a short way of getting to this equation, like sides opposite, blah blah, but what i told you is the reason. You asked for understanding it! Best luck!
7 0
3 years ago
It was recommended that students drink 48 or more ounces of water. How
azamat

A histogram is used to show the frequency of data, where the length of the bar represents the frequency.

<em>50 students drank the recommended amount of water.</em>

The recommended amount is given as:

Amount \ge 48

See attachment for histogram.

From the histogram, we have the following observations

  • <em>The lengths of all bars of the histogram are less than 48, except one.</em>
  • <em>The length of the bar above 48 is 50.</em>

<em />

This means that:  50 students drank the recommended amount of water.

<em>Hence, the number of students is 50</em>

Read more about histograms at

brainly.com/question/24577156

8 0
3 years ago
A jar contains 150 coins. If it is very likely that you will randomly choose a penny out of the jar, how many pennies could be i
arsen [322]
149 pennies.

Very likely: extremely likely, highly reasonable, almost certainly.

Considering the above definitions of "very likely", a jar of 150 coins, 149 of them being pennies, would satisfy each definition given for "very likely".

Almost certainly indicates that there is a possibility that you'd choose a coin that's not a penny, so a jar of 150 coins which are all pennies doesn't satisfy this definition.
7 0
3 years ago
my final balance after 48 months was 896.00 if i originally put 800.00 into the bank what was the interest rate
Tems11 [23]
48 - 896.00 = 884
884-800=84
so the interest rate was 84

7 0
3 years ago
Other questions:
  • Continue the number pattern/sequence:
    12·1 answer
  • Find the value of the 60th term of the following sequence: 33, 28, 23, 18
    6·1 answer
  • Multiple the following:
    11·2 answers
  • Suppose f(x)=x^2 and g(x)= 4x^2.Which statement best compares the graph of g(x) with the graph of f(x)?
    14·1 answer
  • A class photo is being taken of six students, sitting in a row. Three of the students are Jamie, Marshall, and Susan, and Jamie
    15·1 answer
  • I need help with this problem :)
    9·1 answer
  • 8. Expo markers cost $4.99 per pack. There is a 20%
    11·1 answer
  • Rewrite each fraction with a denominator of 10.<br> a<br> 7<br> - IN<br> 2<br> 3 <br> IN <br> 5
    15·1 answer
  • Given that G=ab find the percentage increase in G when both a and b<br> increase by 10%
    5·1 answer
  • Check the following data set for outliers if there is more than one answer separate them with the commas
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!