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
kotegsom [21]
3 years ago
8

Substitution method need help for home work

Mathematics
1 answer:
Marizza181 [45]3 years ago
6 0
-3y = x...so we sub in -3y for x in the other equation

-x + 7y = 70
-(-3y) + 7y = 70
3y + 7y = 70
10y = 70
y = 70/10
y = 7

so we sub in 7 for y in either of the original equations to find x
-3y = x
-3(7) = x
-21 = x

so ur solution is (-21,7)
You might be interested in
Quently As
Anna71 [15]

Answer:

A) 18.3

Step-by-step explanation:

Since adding b and a gives 19.

c must be less than 19.

So, A) 18.3 is the correct answer

5 0
3 years ago
Read 2 more answers
What is the solution to log (9x)-log 3 = 3?
xeze [42]

Answer:

The solution x = \frac{e^{3} }{3}

Step-by-step explanation:

<u>Step 1</u>:-

Given log(9 x) -log 3 =3

we have to use formula  log a-log b=log\frac{a}{b}

log(9 x)- log 3 = log(\frac{9 x}{3} ) =3

Again by using formula log a =b

                                       a = e^{b}

so \frac{9 x}{3} =e^{3}

<u>step 2:</u>-

   3 x = e^{3}

  x = \frac{e^{3} }{3}

The solution of given problem is x=\frac{e^3}{3}

5 0
4 years ago
What are variable terms
eduard

Answer:

The following tells what variable terms are and a explanation. I hope this is helpful

Step-by-step explanation:

Each expression is made up of terms. A term can be a signed number, a variable, or a constant multiplied by a variable or variables. ... In , the terms are: 5x, 3y, and 8. When a term is made up of a constant multiplied by a variable or variables, that constant is called a coefficient.

8 0
3 years ago
Suppose an electronics manufacturer knows from previous data that 2% of
harkovskaia [24]

Answer:

B.) This is not a binomial experiment, because the number of trials is not fixed.

Step-by-step explanation:

For a certain experiment to be classed as a binomial, it has to meet some criteria ;

Which include ;

1.) The trials should be independent.

11.) Each trial should be classifiable into one of success of failure.

111). There is a fixed mean probability for success and failure

IV) There is a fixed number of trials, in experiment described above, the number of trials isn't fixed, it is variable, as the trial will continue until a defective item is obtained.

3 0
3 years ago
135% as a fraction or a mixed number fully simplified please 50 POINTS + BRAINILEST
Valentin [98]

Answer:

27/20

Step-by-step explanation:

135% = 135/100 = (27/20 × 5) = 27/20 = 1 7/20 I think

4 0
2 years ago
Other questions:
  • What is the solution of the system of equations?
    7·1 answer
  • Write the equation of a line that passes through the points (0, -2) and (4, -5). Answer MUST be in standard form: Ax + By = C.
    15·2 answers
  • A cylinder and a cone have the same volume. The cylinder has radius x and height y. The cone has radius 1/3x. Find the height of
    8·1 answer
  • Simplify the ratio 24/56
    5·2 answers
  • Write the equation of a circle with center (6,4) that passes through the coordinate (2,1). In your final answer, include all of
    15·2 answers
  • Choose the statement that is true.
    10·1 answer
  • Use the graph of y=sin2θ to find the value of sin2θ for θ=Π/4<br> a. -1<br> b. 0<br> c. .5<br> d. 1
    9·1 answer
  • Evaluate:(0.0001)-¾<br>​
    6·1 answer
  • Multiply ()
    13·1 answer
  • I need help :,)
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!