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
vovikov84 [41]
3 years ago
13

Number 16. Use substitution. Show how you did it pls. Im bouta cry

Mathematics
1 answer:
Rufina [12.5K]3 years ago
4 0
1-3x-y=3
2x+y=25
Let’s start with the first one.
Subtract 1 from each side
-3x-y=2
Then add -3x to each side
-y=3x+2
Then move the negative and change the signs
Y=-3x-2
Now plug into the second equation
2x+(-3x-2)= 25
Now solve for x
2x-3x-2=25
Add 2 to both sides
2x-3x=27
Now subtract
-x=27
Move the negative to the other side because x can not be negative
X=-27
Now plug that into the second equation
2(-27)+y=25
Now just solve
-54+y=25
Y=79
You might be interested in
Abby scored 87, 86, 93, and 89 on her first four history quizzes. What score does Abby need to get on her fifth quiz to have an
Delicious77 [7]

Answer:

(C) 100

Step-by-step explanation:

The average of a data set is just all the numbers added up divided by the amount of numbers.

If we already have 4 pieces of data and we're looking for one more, we have 5 data pieces.

This means that the sum of all of the numbers in the data set will be 91\cdot5=455 if the mean is 91.

We can find the missing value by adding up what we know and subtracting from 455.

87+86+93+89=355\\\\455-355=100

So Abby needs a 100% on her fifth history quiz to have an average of 91 on all her quizzes.

Hope this helped!

4 0
3 years ago
Solve the system of two linear equations below graphically y= -x + 1 y= -1/3+ 3
Nesterboy [21]

Answer:

Step-by-step explanation:

4 0
2 years ago
Which transformation, when performed on the triangle ABC, will result in the transformed figure A'B'C being similar but NOT cong
Gnoma [55]

Answer:

b. a dilation by a scale factor of 2

Step-by-step explanation:

Which transformation, when performed on the triangle ABC, will result in the transformed figure

A'B'C' being similar but NOT congruent to the original triangle?

a. a reflection over the x-axis

b. a dilation by a scale factor of 2

C.a translation two units to the right

d. a rotation 90° clockwise about the origin

Solution:

Transformation is the movement of a point from its initial location to a new location. Types of transformation are rotation, translation, reflection and dilation.

Rigid transformation are transformation that preserves the size and shape of a figure. Examples of rigid transformation are reflection, translation and rotation.

Dilation preserves the shape but not the size of a figure.

If translation, rotation or reflection is done on triangle ABC, the transformed figure would be congruent to the original triangle. But, if dilation is done, the transformed figure would be similar but NOT congruent to the original triangle.

8 0
2 years ago
The science club raised money to clean the beach the spent $29 on trashbags and $74 on waterproof boots I still have $47 left ho
lara [203]
They raised 150 dollars.
5 0
2 years ago
What is the slope of a line passing through (3, 4) and (5, 8)?
Marat540 [252]

Answer:

The slope of the two points is 2.

8 0
3 years ago
Other questions:
  • In HIJ below, what is the value of y?<br> PLEASE ANSWER
    15·2 answers
  • F(t)=3t^2-2 , find f(k-2)
    15·1 answer
  • 4 Sam was asked to place the numbers shown below in order from least to greatest.
    9·1 answer
  • What is 646.63 meters to centimeters
    8·1 answer
  • The a question is attached below
    12·1 answer
  • What is the reasons of 4x-3=2x+5
    13·1 answer
  • Please help honestly loving you helpers.. IT SAYS: what is the surface area of this figure/Remeber there is a difference between
    11·2 answers
  • Help please, I am begging​
    9·1 answer
  • PLEASE HELP WILL GIVE 40 POINTS
    7·2 answers
  • Half of a number is 16. What is the number?<br> A. 8<br> B. 4<br> C. 64<br> D. 32
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!