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
Dovator [93]
3 years ago
9

Solve the system of equations. 3x + 4y = -23 X = 3y + 1

Mathematics
1 answer:
stepladder [879]3 years ago
8 0

Answer:

x=-5\\y=-2

Step-by-step explanation:

3x+4y=-23\\x=3y+1

Replace x in the equation.

3x+4y=-23\\3(3y+1)+4y=-23\\9y+3+4y=-23\\13y+3=-23\\13y=-23-3\\13y=-26\\y=-\frac{26}{13}\\ y=-2

Now replace y in either equation.

x=3y+1\\x=3(-2)+1\\x=-6+1\\x=-5

You might be interested in
Express in a single natural logarithm ln16-ln8
Sindrei [870]

Answer:

ln 2.

Step-by-step explanation:

One of the rules of logarithms is

ln a - ln b = ln a/b.

So ln 16 - ln 8 = ln 16/8

= ln 2.

3 0
3 years ago
Grace wants to frame a square picture which has a area of
Deffense [45]

Answer:

First Picture: Length = 30.82in

Second Picture: Length = 34.64in

Step-by-step explanation:

Given

Picture 1:

Area = 950in²

Picture 2:

Area = 1200in²

Required

Determine the length of each pictures

From the question, we understand that both pictures are square in shape and the area is calculated as thus:

Area = Length²

For the first picture, substitute 950 for Area

This gives:

950 = Length²

Length ² = 950

Take square root of both sides

Length = √950

Length = 30.8220700148448822

Length = 30.82 (approximated)

Hence, the length of the first picture is 30.82in

For the second picture, substitute 1200 for Area

This gives:

1200 = Length²

Length² = 1200

Take square root of both sides

Length = √1200

Length = 34.6410161513775458

Length = 34.64 (approximated)

Hence, the length of the second picture is 34.64in

4 0
3 years ago
Plz plz help me on number 15 plz plz help me.
GrogVix [38]
The answer is 30578.33
Just here to help ;)
7 0
3 years ago
For each lettered part, a through c, examine the two given sets of numbers. without doing any calculations, decide which set has
romanna [79]
<span>Standard deviation shows the distribution present in a set. Range can be used to approximate this property. Therefore, Set b (100, 140, 150, 160, 200 10, 50, 60, 70, 110) has the largest standard deviation because it has a range of 190 (i.e. 200 - 10)</span>
5 0
3 years ago
Rounded to hundred how can I round to hundred
Gwar [14]
If you are talking about any number then.....
imagine a mountain, any number less than 5 is only the left and any number greater than 5 is on the right
      
Here, for example, let's try 13 

look at 13 on the pyramid .... since it's not a the top of the mountain so it falls back down to 10... it rounds down to 10
Now let's try 18 ...hmmm.... 18 is not at the top either so it falls as well. It falls down to 20 it rounds up to 20 

how about 15 u might be asking...it is at the top...15 is a little different ...make sure no one is looking and push it off the right side and falls to 20. Also rounding up to 20

              5
           4    6 
        3          7 
     2                8 
   1                      9 
0                           10
7 0
4 years ago
Other questions:
  • Can somebody help me I don’t know which one is the answer!!!
    6·1 answer
  • Simplify by dividing 3/58) ÷ (-4/9)
    6·2 answers
  • Are factor of 6 is 36,56,42 and 66
    5·2 answers
  • jon has to pay $7.00 admission for the skating ring and $1.50 per hour to rent rollerblades. How many hours can he skate for?
    9·1 answer
  • You move left 2 units and right 3 units. You end at (4, 5). Where did you start?
    8·1 answer
  • Which steps could be used to solve this story problem? Jennifer made some dough for pastry treats. She used 5 times as much flou
    11·1 answer
  • In a certain Algebra 2 class of 29 students, 13 of them play basketball and 7 of them play baseball. There are 4 students who pl
    6·1 answer
  • Use MATLAB to plot the functions u = 2 log10 (60x + 1) and v = 3 cos(6x) over the interval 0 ≤ x ≤ 2. Properly label the plot an
    6·1 answer
  • What is the plane's change in altitude to the nearest foot?
    11·1 answer
  • 2. A recipe uses 5 cups of water, 3 cups of rice, and 1 cup of black beans. What is the ratio of cups of rice to cups of water?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!