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Anna11 [10]
4 years ago
5

Answer all the questions

Mathematics
1 answer:
Verizon [17]4 years ago
5 0
20. x > 15
19. x \leq -8
21. x \geq 42
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How many lines of symmetry does a regular octagon have?
BabaBlast [244]
A regular octagon has 8 lines of symmetry.
4 0
4 years ago
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The total weight of three kittens is 14 ounces kitten one weighs 1/4 pound kit in two weighs 5.5 ounces how many ounces does kit
Rina8888 [55]

Answer:

4.5 ounces

Step-by-step explanation:

Given data

Total weight=14 ounces

1st kitten= 1/4pound = 4 ounces

2nd kitten= 5.5 ounces

3rd kitten = x ounces

Let the expression for the total weight be

4+5.5+x=14

solve for x

9.5+x=14

x= 14-9.5

x=4.5 ounces

Hence the 3rd kitten weighs 4.5 ounces

8 0
3 years ago
Cora bought 4 pounds of nuts and 2 pounds of raisins for $23.50. Mark bought 2 pounds of nuts and 4 pounds of raisins for $18.50
shutvik [7]

Answer:

4n+2r=23.50

2n+4r=18.40

8 0
3 years ago
Which statement is an axiom of Euclidean geometry? a) If two lines intersect, their intersection is a plane. b) If two planes in
PtichkaEL [24]

The <em>correct answer</em> is:

D) If two points lie in a plane, the line containing those points lies in the same plane.

Explanation:

If two planes intersect, they intersect in a line, not a plane.

Space contains at least 4 non-coplanar points, not 3 non-collinear points.

If two lines intersect, their intersection is a point.

Only one line can be drawn through two given points.

8 0
3 years ago
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The volume of a rectangular box is 2x(2x + 5)(2x – 3). (Drawing is not to scale.)
Anarel [89]

Answer:

Option B. The volume is the product of the area of the base, 2x(2x + 5), and the height, 2x – 3

Step-by-step explanation:

<u><em>The picture of the question in the attached figure</em></u>

we know that

The volume of a rectangular prism is equal to

V=BH

where

B is the area of the base of the prism

H is the height of the prism

In this problem we have

The area of the base B is equal to

B=2x(2x+5)\ units^2

The height H is equal to

H=2x-3\ units

therefore

The volume is equal to

V=2x(2x+5)(3x-3)\ units^3

The volume is the product of the area of the base, 2x(2x + 5), and the height, 2x – 3

5 0
3 years ago
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