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
zheka24 [161]
3 years ago
10

Solve the following systems b elemination show work and explain each step 3x + y = 13 4x - 3y = 13

Mathematics
1 answer:
Alika [10]3 years ago
5 0

Answer:

x = 4

y = 1

Step-by-step explanation:

Here, we want to solve the system of equation using elimination method

We have this as follows;

3x + y = 13

4x- 3y = 13

Multiply equation 1 by 3

9x + 3y = 39

4x-3y = 13

Add the two equations

13x = 52

x = 52/13

x = 4

From equation 1;

3x + y = 13

y = 13-3x

y = 13-3(4)

y = 13-12 = 1

You might be interested in
Determine if they following is systems of equations?<br> y = 3x + 2<br> y = 7x -10
sergij07 [2.7K]

Answer:

Yes it is.

Step-by-step explanation:

7 0
3 years ago
QUESTION 8
vfiekz [6]
54 percent

You add the two together to get 39, then divide 21 by 39. This gives you 0.538, which turns into 54%
7 0
3 years ago
A person stands 10 meters east of an intersection and watches a car driving towards the intersection from the north at 13 meters
In-s [12.5K]

Answer:

Therefore the rate change of distance between the car and the person at the instant, the car is 24 m from the intersection is 12 m/s.

Step-by-step explanation:

Given that,

A person stand 10 meters east of an intersection and watches a car driving towards the intersection from the north at 13 m/s.

From Pythagorean Theorem,

(The distance between car and person)²= (The distance of the car from intersection)²+ (The distance of the person from intersection)²+

Assume that the distance of the car from the intersection and from the person be x and y at any time t respectively.

∴y²= x²+10²

\Rightarrow y=\sqrt{x^2+100}

Differentiating with respect to t

\frac{dy}{dt}=\frac{1}{2\sqrt{x^2+100}}. 2x\frac{dx}{dt}

\Rightarrow \frac{dy}{dt}=\frac{x}{\sqrt{x^2+100}}. \frac{dx}{dt}

Since the car driving towards the intersection at 13 m/s.

so,\frac{dx}{dt}=-13

\therefore \frac{dy}{dt}=\frac{x}{\sqrt{x^2+100}}.(-13)

Now

\therefore \frac{dy}{dt}|_{x=24}=\frac{24}{\sqrt{24^2+100}}.(-13)

               =\frac{24\times (-13)}{\sqrt{676}}

               =\frac{24\times (-13)}{26}

               = -12 m/s

Negative sign denotes the distance between the car and the person decrease.

Therefore the rate change of distance between the car and the person at the instant, the car is 24 m from the intersection is 12 m/s.

8 0
3 years ago
I’ll give brainlinest
Mama L [17]

Answer:

what do you need help with

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Which of the following is a possible measure of the area of a square rug?
ivolga24 [154]
I say B because if it's a square that means each side is equal...24 divided by four sides is 6 inches each
5 0
3 years ago
Other questions:
  • There are 4,200 adults in Lakeveiw. 3/8 of adults in adults in lake view do not have children. How many adults in lakeview have
    12·1 answer
  • Question 4(Multiple Choice Worth 5 points)
    12·2 answers
  • Help me to find value of K, pls
    10·1 answer
  • Which sentence about the division of two fractions is true? A. If the dividend is greater than the divisor, the quotient will be
    7·1 answer
  • Which graph shows the solution set for -1.1x+ 6.4&gt; -1.3
    8·2 answers
  • Test the given claim. Identify the null​ hypothesis, alternative​ hypothesis, test​ statistic, P-value, and then state the concl
    14·1 answer
  • The population of a certain type of gorilla has been decreasing at a rate of about 3.5% per year over the past twenty years. If
    15·1 answer
  • PLEASE HELP!!! PLEASEEEE ASAPPPP
    13·1 answer
  • What’s the answer thank you
    12·1 answer
  • Classify the triangle by its angles and sides.
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!