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
Wewaii [24]
2 years ago
8

Solve the system of equations. (1 point) 5x + y = 9 3x + 2y = 4 (−2, 5) (1, 4) (2, −1) (4, −4)

Mathematics
1 answer:
allochka39001 [22]2 years ago
5 0

Heyo, the answer is (2,-1).

5x+y=9

3x+2y=4


I went ahead and multiplied the first equation by -2(so I can get rid of the y's)

-10x-2y=-18

3x+2y=4

Just simply add now

-7x=-14

Divide by -7 to get x by itself

x=2



You might be interested in
A town's public works department has ordered sand to spread on roadways during the upcoming winter snows. The delivered sand for
ira [324]

Answer:

1256 cubic yards of sand.

Step-by-step explanation:

In this question we have to find the volume of cone formed by sand.

Height of the cone is = 36 feet

Radius of the cone = 60/2 =30 feet.

Now we know the formula of volume of cone v = π r² (h/3)

By putting the values of r and h we can get the volume of sand to spread.

Volume = π×(30)²×(36/3) = 3.14×900×12 feet³

              = 33912 feet³

Now we will convert feet³ to cubic yards

Since 1 cubic feet = .037037 cubic yards

therefore 33912 cubic feet = 33912×.037 = 1256 cubic yards.

So the answer is 1256 cubic yards of sand has the department received.

5 0
2 years ago
What is the recursive rule for the sequence -22.7, -18.4, -14.1, -9.8, -5.5
nikklg [1K]
The answer would be d.) An=An+1-4.3
6 0
3 years ago
Read 2 more answers
Point a is located at 4,-7. The point is reflected in the x-axis it's image is located at
Vilka [71]
The answer should be (4,7)
7 0
3 years ago
Solve (x + 1)2 – 4(x + 1) + 2 = 0 using substitution.
solniwko [45]

For this case we have to:

Letu = x + 1

So:

u ^ 2-4u + 2 = 0

We have the solution will be given by:

u = \frac {-b \pm \sqrt {b ^ 2-4 (a) (c)}} {2 (a)}

Where:

a = 1\\b = -4\\c = 2

Substituting:

u = \frac {- (- 4) \pm \sqrt {(- 4) ^ 2-4 (1) (2)}} {2 (1)}\\u = \frac {4 \pm \sqrt {16-8}} {2}\\u = \frac {4 \pm \sqrt {8}} {2}\\u = \frac {4 \pm \sqrt {2 ^ 2 * 2}} {2}\\u = \frac {4 \pm2 \sqrt {2}} {2}

The solutions are:

u_ {1} = \frac {4 + 2 \sqrt {2}} {2} = 2 + \sqrt {2}\\u_ {2} = \frac {4-2 \sqrt {2}} {2} = 2- \sqrt {2}

Returning the change:

2+ \sqrt {2} = x_ {1} +1\\x_ {1} = 1 + \sqrt {2}\\2- \sqrt {2} = x_ {2} +1\\x_ {2} = 1- \sqrt {2}

Answer:

x_ {1} = 1 + \sqrt {2}\\x_ {2} = 1- \sqrt {2}

3 0
2 years ago
Read 2 more answers
Solve the formula s=4pi r^2 for r
andrew11 [14]

Answer:

The formula to find the surface area of a sphere is to take the radius of the sphere and square it and multiply that amount by pi and then multiply that by 4. This is written algebraically as S=4πr2, where S is the surface area, r is the radius, and the value of π is 3.14.

7 0
2 years ago
Other questions:
  • Which property makes a rectangle a special type of parallelogram?
    12·2 answers
  • Use the table to identify values of p and q that can be used to factor x2 + x – 12 as (x + p)(x + q).
    6·1 answer
  • Anybody have an answer?
    10·1 answer
  • What's the answer Or I need some help
    14·2 answers
  • I need to know how to find x on this triangle
    8·1 answer
  • Plz help im tired<br> ty
    8·1 answer
  • Write your answer in the form y=my+b
    10·1 answer
  • Write the equation of the line with y-intercept 3 and a slope of -2/3, and graph it
    15·1 answer
  • 2(x-3)+5&gt;39<br><br><br><br><br><br><br> Thanks!!!!!!!!!!!
    10·1 answer
  • In 2010, Haiti was hit by a devastating earthquake, which registered at 7. 0 on the Richter scale. The largest recorded earthqua
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!