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
Tpy6a [65]
3 years ago
13

Solve by substitution or elimination 4X – 3y = 7 4x + y = 11

Mathematics
1 answer:
Simora [160]3 years ago
8 0

Answer:

(5/2 , 1)

Step-by-step explanation:

4X – 3y = 7

4x + y = 11

———————

Multiply a -1 to the bottom equation to get the 4x as a negative so it cancels out.

4x - 3y = 7

-4x - y = -11

——————

-4y = -4

Divide by -4

y = 1

Substitute the value of y into one of the equations and solve

4x - 3(1) = 7

4x -3 = 7

4x = 10

Divide by 4

X = 10/4

Simplify by dividing by 2

x = 5/2

Therefore the answer is (5/2, 1 )

You might be interested in
Hannah notices that segment HI and segment KL are congruent in the image below: Two triangles are shown, GHI and JKL. G is at ne
BlackZzzverrR [31]

Answer:

segment IG ≅ segment LJ

Step-by-step explanation:

Please refer to the attached image as per the triangles as given in the question statement.

\triangle HGI, \triangle JKL

G\left(-3,1\right),\ H\left(-1,1\right),\ I\left(-2,3\right)

J\left(3,3\right),K\left(1,3\right),L\left(2,1\right)

Given that:

HI\cong KL and

\angle I \cong \angle L

<em>SAS congruence </em>between two triangles states that two triangles are congruent if two corresponding sides and the angle between the two sides are congruent.

We are given that one angle and one sides are congruent in the given triangles.

We need to prove that other sides that makes this angle are also congruent.

To show the triangles are congruent i.e. \triangle GHI \cong \triangle JKL by SAS congruence we need to prove that

segment IG ≅ segment LJ

Let us use Distance formula  to find IG and LJ:

D = \sqrt{(x_2-x_1)^2+(y_2-y_1)^2}

IG  =\sqrt{(-2+3)^2+(3-1)^2} =\sqrt5\ units

LJ  =\sqrt{(2-3)^2+(1-3)^2} =\sqrt5\ units

Hence, segment IG ≅ segment LJ

\therefore ΔGHI ≅ ΔJKL by SAS

4 0
3 years ago
Is(0,-2) a solution of x+y=6
sergiy2304 [10]

Answer:

no

Step-by-step explanation:

x+y=6

Substitute the point into the equation and see if it is true

0 + -2 = 6

-2 =6

This is not true so the point is not a solution

4 0
3 years ago
Read 2 more answers
I dont get this please help.
madam [21]

40 out of 250 students speak French: 40 / 250 = 0.16

Multiply the number of students surveyed by 0.16:

30 x 0.16 = 4.8

Round up to 5 students.

Answer 5 students

3 0
3 years ago
A baseball has a diameter of 2.9 inches. How many square inches of material are necessary to cover a baseball? Use 3.14 for π
amm1812

Answer:

Step-by-step explanation:

2.9 * 3.14 = 9.11 circumference

660.52 Area

8 0
3 years ago
Write a function to give arbitrary probabilities (totalling 100%) to each face of a six-sided die.
Andre45 [30]
P(A) = N/0
where P(A) equals Probability of any event occurring
N is the Number of ways an event can occur and
0 is the total number of possible Outcomes

P(A) = 1/6

Plainly the probability of rolling a six with a single six-sided dice is one event in which it lands with six uppermost, divided by six possible outcomes from a single throw, or one sixth (16.66 per cent).
7 0
3 years ago
Other questions:
  • A drawer contains one pair of brown socks and one pair of white socks the table shows the possible outcomes
    9·2 answers
  • Meow aka hi ummmm what is the square root of 232
    5·2 answers
  • A commuter railway has 800 passengers a day and charges each one 2 dollars. ?
    13·1 answer
  • How do I graph this? I have to find x and y intercepts and the vertex??
    15·1 answer
  • What does the word deviate mean
    14·2 answers
  • What is the value of cos (tan^-1 1)
    13·2 answers
  • The red string r is 20 centimeters less than 5 times as long as the orange string s ." ​This can be represented by the expressio
    14·1 answer
  • Lindsay opened a lemonade stand on her street. It costs her $15.00 to buy the supplies each day, and she sells lemonade for $2.0
    12·1 answer
  • Students in an introductory college economics class were asked how many credits they had earned in college, and how certain they
    10·1 answer
  • Hiiooo! Can someone help me out❤️
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!