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
LekaFEV [45]
3 years ago
14

Solve the following system of equations by linear combination: 3d – e = 7 d + e = 5

Mathematics
1 answer:
SashulF [63]3 years ago
8 0
3d - e = 7d + e = 5   ⇒   3d - e = 5 
                                       7d + e = 5


 3d - e = 5 
 7d + e = 5          +
-----------------------
10d / = 10
10d = 10
d = 10/10
d = 1

 7d + e = 5
7×1 + e = 5
7 + e = 5
e = 5 - 7
e = -2

You might be interested in
Whobatman
77julia77 [94]
The best estimate of the population means is always the sample mean. We have the sample values, using them we can find the sample mean.

The sum of the sampled rates = 248
Sample Size = 10

Mean value of the sample = Sum of Sample Rate/Sample Size

So,

Mean of the sample = 248/10 = 24.8

Therefore, we can say that the best estimate for the population mean is 24.8
8 0
3 years ago
Read 2 more answers
Hello, I need help with this question.
ella [17]

Answer:

The answer would be 22/12 or 1 and 11/12

Step-by-step explanation:

1/2+2/3+3/4

First get common denominators so you have a denominator of 12 so 6/12+8/12+9/12

Add those together and you get 23/12 but you have to subtract one because that's what the problem says so you get 22/12

4 0
3 years ago
Read 2 more answers
Damarcus and Xavier went to the arcade to play their two favorite games. Damarcus played 4 rounds of game 1 and 6 rounds of game
nlexa [21]

Answer:

I think the cost of game 1 is $8

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Create a table of data for two different linear functions. The table should use the same values of x for both functions. Based o
user100 [1]

Answer:

Yes they will intersect

Function 1= F(X)=2X+5

Function 2=H(X)=3X+2

INTERSECT=(3,11)

Step-by-step explanation:

First of all, we create 2 LINEAR function, i created the function f(x)=2x+5 and the function h(x)=3x+2, both are linear(without a quadratic term). Then

you replace the x for a number:

Table 1 (F(X)=2X+5)                                 Table 2 (H(X)=3X+2)

X=1----->Y=2+5=7                                     X=1------>Y=3·1+2=5

X=2---->Y=2·2+5=9                                  X=2----->Y=3·2+2=8

X=3---->Y=3·3+5=11                                  X=3----->Y=3·3+2=11

With both tables of data we can see that in the X=3/Y=11 point this two linear functions will intersect so the answer is that the two functions will intersect at (3,11)----->(X,Y)

4 0
3 years ago
I'll give brainliest
erma4kov [3.2K]

Answer:

I think its D sorry if I get it wrong

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Other questions:
  • 1. write a rule for the sequence. 3,-3,-9,-15
    11·2 answers
  • You have 87 marbles <br><br> Round that number to the nearest ten.
    9·1 answer
  • The Pave the Way Company is installing a new walkway. The installer uses 13 paving stones for every foot of walkway. He needs 11
    8·1 answer
  • What is four base ten blocks
    10·1 answer
  • HELP HELP HELP FIRST RIGHT ANSWER GETS BRAINLIEST​
    15·1 answer
  • Andy constructed a triangle. Angle 1 and 2 are the same size and angle 3 has a measurement of 100 degrees. What is the measureme
    9·1 answer
  • Cooper invested $3,100 in an account paying an interest rate of 2%
    10·1 answer
  • Explain your answer !! <br> Have a nice day <br><br> Will give braisnlt
    9·1 answer
  • Giving brainly for correct answers
    10·2 answers
  • What is the distance between points M(2,6) and N(3,1)
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!