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
Katarina [22]
3 years ago
14

Y

ormula1" title="y \leqslant - x - 1 \\ y \geqslant 2x + 4" alt="y \leqslant - x - 1 \\ y \geqslant 2x + 4" align="absmiddle" class="latex-formula">

Mathematics
1 answer:
Flura [38]3 years ago
3 0
y\leq-x-1\\\\y=-x-1\\for\ x=-1\to y=-(-1)-1=1-1=0\to(-1;\ 0)\\for\ x=0\to y=-0-1=-1\to(0;-1)

y\geq2x+4\\\\y=2x+4\\for\ x=-2\to y=2\cdot(-2)+4=-4+4=0\to(-2;\ 0)\\for\ x=0\to y=2\cdot0+4=0+4=4\to(0;\ 4)

Answer in an attachment.

You might be interested in
The quotient of a number x and -1.5 = 21
Lapatulllka [165]

Should be... x ÷ -1.5 = 21

4 0
3 years ago
Read 2 more answers
Substitution:<br><br> y=6x+11<br><br>y-4x=15 ​
german

Answer:

x=2

Step-by-step explanation:

6x+11-4x=15

2x+11=15

2x=4

x=2

4 0
3 years ago
To lose one pound of fat, a 200-pound person must burn 3,500 calories. If that person burns 180 calories by walking for 30 minut
SVEN [57.7K]

Answer:

C - 19 hours 27 minutes

Step-by-step explanation:

180 × 2 = 360

360 calories in an hour

3500 × 2 = 7000 (amount of calories in 2 pounds)

7000 ÷ 360 = 19.4444...


I hope this helps


4 0
2 years ago
The image of the polygon ABCDE reflected across the x-axis. A(-1,-1),B(0,1),C(4,2),D(6,0),E(3,-3) The vertices of the image are.
4vir4ik [10]

A reflection across the x-axis has the rule:

(x,y)→(x,-y).

Then:

  • A(-1,-1)→A'(-1,1),
  • B(0,1)→B'(0,-1),
  • C(4,2)→C'(4,-2),
  • D(6,0)→D'(6,0),
  • E(3,-3)→E'(3,3).

Answer: the vertices of the image are A'(-1,1), B'(0,-1), C'(4,-2), D'(6,0) and E'(3,3).

6 0
3 years ago
Brianna is going to a carnival that has games and rides. Each game costs $1.25 and each ride costs $3.75. Brianna spent $18.75 a
maxonik [38]

Answer:

6 games and 3 rides

Step-by-step explanation:

Let the number of games Brianna played be x,

and the number of rides she went on be y.

Total cost for games= 1.25x

Total cost for rides= 3.75y

Since number of games is twice the number of rides,

x= 2y -----(1)

Total costs= cost of games +cost of rides

18.75= 1.25x +3.75y

Multiply the whole equation by 4 to remove the decimals:

75= 5x +15y

Simplify by dividing the whole equation by 5:

15 = x + 3y

Label the equation:

x +3y= 15 -----(2)

Although we can solve these 2 equations by substitution, since the question requires us to graphically solve, we have to graph 2 linear lines.

I will choose 3 points to plot on the graph for each equation:

x= 2y -----(1)

\begin{tabular}{|c|c|c|c|} \cline{1-4}x & 2(1) = 2&2(2) = 4&2(3) = 6\\ \cline{1-4}y & 1 &2&3\\ \cline{1-4}\end{tabular}

x +3y= 15 -----(2)

x= -3y +15

\begin{tabular}{|c|c|c|c|} \cline{1-4}x &  -3(1)+15= 12& -3(2)+15= 9& -3(3)+15= 6\\ \cline{1-4}y & 1 &2&3\\ \cline{1-4}\end{tabular}

Let's plot these points on a graph paper. Then, join them with a straight line for each straight line graph. Please see the attached picture for the graph.

From (1): y= ½x

From (2): 3y= 15 -x

y= 5 -⅓x

From the graph, the solution of the equation is (6,3). The solution is the point on the graph in which the 2 lines intersect.

x- coordinate: 6

y- coordinate: 3

Thus, Brianna played 6 games and went on 3 rides.

8 0
3 years ago
Read 2 more answers
Other questions:
  • Each of a certain type of tire on a 4 wheel car lasts exactly 10,000 miles. How many spare tires of this same variety must carri
    11·1 answer
  • What is the reciprocal of 100
    10·2 answers
  • If 15% of N is 45% of 2003, what is the value of N?
    8·1 answer
  • Show an equation that is <br>twice a number, increased by 5
    8·1 answer
  • Evaluate the quotient of 1.05 x 103 and 1 x 103:
    12·2 answers
  • You have one type of nut that sells for $2.80/lb and another type of nut that sells for $9.60/lb. You would like to have 20.4 lb
    10·1 answer
  • If the vertex of a parabola is at (2, 3) and the point (0, -1) is also on the parabola, find an equation for the parabola. Write
    8·1 answer
  • What is equivalent to 7w +7w
    14·1 answer
  • What is the equation of the line in slope-intercept form?
    14·1 answer
  • What about linear equations
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!