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
blondinia [14]
4 years ago
7

Use elimination to solve and match each system of equations to the correct solution.

Mathematics
1 answer:
podryga [215]4 years ago
7 0

\begin{cases}2x-9y=-51\\2x-3y=-9\end{cases}\\\\\\\begin{cases}(2x-9y)(-1)=-51(-1)\\2x-3y=-9\end{cases}

\begin{cases}-2x+9y=51\\2x-3y=-9\end{cases}     (adding the second equation to the first one)

\begin{cases}\qquad6y=42\\2x-3y=-9\end{cases}\\\\\\\begin{cases}\qquad y=7\\2x-3y=-9\end{cases}\\\\\\\begin{cases}y=7\\2x-3(7)=-9\end{cases}\\\\\\\begin{cases}y=7\\2x-21=-9\end{cases}\\\\\\\begin{cases}y=7\\2x=12\end{cases}\\\\\\\begin{cases}x=6\\y=7\end{cases}

You might be interested in
Will ran the diagonal distance across a square field measuring 40 yards on each side. James ran the diagonal distance across a r
Oksi-84 [34.3K]

Answer: The distance across a rectangular field is longer distance.

Step-by-step explanation:

Since we have given that

Dimension of square = 40 yards

So, Dimensions of rectangle are :

Length = 25 yards

Width = 35 yards

So, Perimeter of rectangle would be

2\times (l+b)\\\\=2\times (25+35)\\\\=2\times 60\\\\=120\ yards

Diagonal of square would be

\sqrt{40^2+40^2}\\\\=\sqrt{1600+1600}\\\\=\sqrt{3200}\\\\=56.56\ yards

Hence, the distance across a rectangular field is longer distance.

4 0
3 years ago
Read 2 more answers
An 11-inch string is cut into 3 equal pieces. which expression shows the length of each piece?
Fofino [41]
11.6666 11 divided by3 equals 1.6666
6 0
3 years ago
Read 2 more answers
(ASAP) i need help plsssssszzz
pickupchik [31]
It’s The first anwser
7 0
3 years ago
Read 2 more answers
I will mark brainliest!
Gelneren [198K]

Answer:

A

Step-by-step explanation:

It looks like M is composed of all real numbers and that U = R also means its composed of all real numbers. This means that M and U are equal and both are composed of all real numbers.

To define the complement of M, it includes all values which are not in M. However, since M already has all real numbers and U doesn't have any values that M doesn't then the complement is nothing. It is an empty set with no items in it. This means A is the correct answer.

5 0
3 years ago
Demi has 221 songs on her phone. The songs take up 884 megabytes of storage . Each song takes up same amount of space . How many
sveticcg [70]

Answer:

540 megabytes

Step-by-step explanation:

We will first need to find out how much space a<em> singular song</em> will take up. We will do this by <em>the storage taken up (884) by the number of songs she has:</em>

884 / 221 = 4 mb taken up per song

Then we want to find out how many megabytes <em>135 of these songs take up</em>, so we will multiply the <em>mb taken up per song (4) by the number of songs we want to find (135)</em>:

4 x 135 = <em>540 megabytes</em>

<em />

<em>Edit: made a mistake in my original answer, apologies!</em>

7 0
3 years ago
Other questions:
  • Marco sorted these solid figures into two groups. What is true about the groups?
    12·1 answer
  • 5 baseballs to 25 softballs in simplest form
    10·1 answer
  • What is 25 percent of 80
    5·2 answers
  • Chris also wants to hang string lights outside in his backyard. if each pack contains 96 inches of string lights how many packs
    15·1 answer
  • Find the volume of the prism:
    9·2 answers
  • In pairs of similar polygons, corresponding angles are always _______
    5·1 answer
  • Brainliest if your correct :P
    14·2 answers
  • How would I solve this​
    15·2 answers
  • Annie and Maria traveled overseas for days and stayed in three different hotels in three different cities: Stockholm, Sweden; Os
    12·1 answer
  • The transformation from triangle ABC to triangle A'B'C'
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!