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3 years ago

Which of the diagram represents the inequality x=1?

Mathematics

2 answers:

lina2011 [118]3 years ago

8 0

<h3>Answer: Diagram C</h3>

Reason: Any point in the shaded yellow region has an x coordinate larger than 1. Points on the dashed boundary line are not part of the solution set.

aksik [14]3 years ago

4 0

Answer:

Step-by-step explanation:

$A=x\leq 1\\
B=x\geq 1\\
C=x>1$

Hope this helps

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The radius of a cylinder gift box is box is 3X +1 inches the height of the gift box is twice the radius what is the surface area

Genrish500 [490]

Answer:

The surface area of the gift box is = $A = \frac{1188}{7}x^{2}+ \frac{774}{7}x +\frac{132}{7}$

Step-by-step explanation:

The surface area of the cylinder can be calculated using this formula:

$A=2\pi rh+2\pi r^2$

in this case, r is not a number, but rather an expression, which is r = $3x +1$ .

The height of the gift box is twice the radius, which is h = $2(3x+1)= 6x+2$

To get our curved surface area, we carefully put the expressions for h and r into the equation.

$A = 2 \times \frac{22}{7} \times (3x+1) \times (6x+2) + 2 \times \frac{22}{7} \times (3x+1)^{2}$

$A = \frac{44}{7} (3x+1) \times (6x +2) + \frac{44}{7} (9x^{2} + 6x +1)\\A =\frac{132}{7}x + \frac{44}{7} \times (6x+2)+ \frac{396}{7}x^{2}+\frac{246}{7}x +\frac{44}{7}$

$A = \frac{792}{7}x^{2} +\frac{264}{7}x +\frac{264}{7}x + \frac{88}{7} + \frac{396}{7}x^{2} + \frac{246}{7}x + \frac{44}{7}$

$A = \frac{1188}{7}x^{2}+ \frac{774}{7}x +\frac{132}{7}$

The surface area of the gift box is = $A = \frac{1188}{7}x^{2}+ \frac{774}{7}x +\frac{132}{7}$

5 0

4 years ago

Is a cube a polygon? Why or why not?

myrzilka [38]

No. A cube is a 3D figure and polygon is a 2D one.

5 0

3 years ago

Find the equation of the line of the graph

leonid [27]

Answer:

So this is a negative slope remember this. We are going to use y = mx + b

m is the slope b is the y intercept. In this problem, the y intercept is 6.

The slope is -2;

Y = -2x + 6

Step-by-step explanation:

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3 years ago

Which of the following is a quadratic equation whose roots are 3 and -1?

Natali5045456 [20]

Answer:

B: x²-2x-3=0

x1= -1 x2= 3

4 0

3 years ago

Solve the simultaneous equations 5x−y=8

Igoryamba

<span>5x−y=8 ; y = 5x - 8
7x+4y=22

substitute </span>y = 5x - 8 into 7x+4y=22

7x+4y=22
7x+4(5x - 8) = 22
7x + 20x - 32 = 22
27x = 54
x = 2

y = 5x - 8
y = 5(2)- 8
y = 10 - 8
y = 2

answer: x = 2 y = 2 or (2,2)

4 0

3 years ago