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
vitfil [10]
2 years ago
15

Solve the system by substitution

Mathematics
1 answer:
olganol [36]2 years ago
6 0

Answer:

-2

Step-by-step explanation:

y =  - 6x \\ y =  - 4x + 4 \\ then \: substitute \\  - 6x =  - 4x + 4 \\  - 6x + 4x = 4 \\  - 2x = 4 \\  \frac{ - 2x}{ - 2}  =  \frac{4}{ - 2}  \\ then \:  - 2 \: cancel \: by \:  - 2 \\ x = - 2

You might be interested in
25.
bulgar [2K]

Using the slope concept, it is found that the angle between the ladder and the floor will be of 33.69º.

<h3>What is a slope?</h3>

The slope is given by the <u>vertical change divided by the horizontal change</u>, and it's also the tangent of the angle of depression.

In this problem, we have that:

  • The angle is of 45º.
  • The vertical distance is the height of h.
  • The horizontal distance is of 3m.

Hence:

tan(45º) = h/3.

1 = h/3.

h = 3 m.

If the ladder slides 1 m down, the height will be of 2m, hence the angle will be given as follows:

\tan{\theta} = \frac{2}{3}

\theta = \arctan{\left(\frac{2}{3}\right)}

\theta = 33.69^\circ

More can be learned about the slope concept at brainly.com/question/18090623

#SPJ1

8 0
2 years ago
I really need help with this my deadline is very soon​
Harman [31]

Answer:

(3)\ y = -x

(5)\ y = -3x -2

Step-by-step explanation:

Required

The equation in slope intercept form

Solving (3):

m = -1

(x_1,y_1) =(4,-4)

The equation in slope intercept form is:

y = m(x - x_1) + y_1

This gives:

y = -1(x - 4) -4

Expand

y = -x + 4 -4

y = -x

Solving (5):

m = -3

(x_1,y_1) = (1,-5)

The equation in slope intercept form is:

y = m(x - x_1) + y_1

This gives:

y = -3(x - 1) - 5

Expand

y = -3x + 3 - 5

y = -3x -2

8 0
2 years ago
Shawna lives in an apartment 9 4/5 miles from the hospital where she works. Her brother rents a room in a house 7 2/5 miles from
tamaranim1 [39]

Answer:

2 2/5 miles

Step-by-step explanation:

6 0
2 years ago
Find the value of x in the triangle listed here. If you could show me the steps, I would appreciate it.
-Dominant- [34]

Answer:

71°

Step-by-step explanation:

The triangle shown is an isosceles triangle. Isosceles triangles have two equal sides and two equal angles. When all 3 angles are added, it should have a sum of 180°. The tip of the triangle is the part of the triangle with the smallest degree/angle. So the two remaining angles are the same amount.

180°=38°+x+?

180°=38°+71°+71°

Both missing angles are the same degree, and when both are added to 38, it has a sum of 180. x is equal to 71°.

7 0
2 years ago
Read 2 more answers
A relationship between two variables is described below. We can think of one variable as helping to explain the other. Is the in
kramer

Answer:

Explanatory Variable

Step-by-step explanation:

The variable that we can change is called the Explanatory variable.

The response variable dependent upon the explanatory variable, as we change the value of the explanatory variable the value of the response variable is also gets changed.

The number of years smoking a cigarette is in our control so it is an explanatory variable.

and, the impact of the number of years smoking a cigarette is directly on lung capacity, so it is Response variable.

3 0
3 years ago
Other questions:
  • A recipe for French toast that serves 6 calls for 3/4 cup granulated sugar, 1 cup of evaporated milk, 1/3 teaspoon of vanilla, a
    13·1 answer
  • Please help me with both answers and explain please
    7·2 answers
  • Can Someone Please Help me, Show Work too
    14·1 answer
  • What is mean of 8,3,3,7 and 4
    13·1 answer
  • The sum of twice a number and 10 is 36
    12·2 answers
  • one bag of grapefruit weighs4 pounds. How many pounds of grapefruit are in bags? O 82 pounds Ol pounds o 11 unds O 182 pounds​
    11·1 answer
  • An exponential function f(x) is reflected across the y-axis to create function g(x). Which is a true statement regarding
    14·2 answers
  • Mr. hershman has purchased a farm that is in the shape of a rectangle. the dimensions of the piece of land are 1.3 km by 3.15 km
    5·1 answer
  • Can I use this for my homework for science because am a little girl trying to get an A+ I hope you understand cuz I want a free
    12·1 answer
  • -X + 2y = 10<br> -3x+ 6y = 11
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!