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Musya8 [376]
3 years ago
8

Please answer this!!

Mathematics
1 answer:
Reika [66]3 years ago
4 0
The second one is correct
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|b|+b^3;b=-2 evaluate the expression
saveliy_v [14]

Answer:

-6

Step-by-step explanation:

| - 2|  = 2 \\  {( - 2)}^{3}  = ( - 2)( - 2)( - 2) = ( - 8) \\  \\  | - 2 |  +  {( - 2)}^{3 }  = 2 - 8 =  - 6

5 0
3 years ago
1/4 DIVIDED BY 1/2 = ? <br> CHECK BY MULTIPLYING
Llana [10]

Answer:

1/2

Step-by-step explanation:

1/4÷1/2

1/4*2/1

2/4

1/2

Points to remember:if u change dividion sign into multiplication sign do it's reciprocal.

8 0
2 years ago
Read 2 more answers
Which figure will tessellate the plane? A. regular pentagon B. regular decagon C. regular octagon D. regular hexagon
Harrizon [31]
<h3>Answer: D. regular hexagon</h3>

A hexagon is composed of 6 congruent equilateral triangles. Each equilateral triangle has interior angle of 60 degrees. Adding 6 such angles together gets you to 360 degrees. So we've done one full rotation and covered every bit of the plane surrounding a given point. Extend this out and you'll be able to cover the plane. A similar situation happens with rectangles as well (think of a grid, or think of tiles on the wall or floor)

In contrast, a regular pentagon has interior angle 108 degrees. This is not a factor of 360, so there is no way to place regular pentagons to have them line up and not be a gap or overlap. This is why regular pentagons do not tessellate the plane. The same can be aside about decagons and octagons as well.

5 0
3 years ago
Using appropriate properties find: 2/3 × 3/4 + 3/7 × 3/4​
Viktor [21]

Answer:

\frac{23}{28}

Step-by-step explanation:

\frac{2}{3}  \times  \frac{3}{4}  +  \frac{3}{7}  \times  \frac{3}{4}

=  >  \frac{3}{4} ( \frac{2}{3}  +  \frac{3}{7} )

=  >  \frac{3}{4}  \times  \frac{23}{21}

Reducing 3 from numerator and denominator,

=  >  \frac{23}{4 \times 7}  =  \frac{23}{28}

3 0
2 years ago
Find an equation for the line tangent to the circle x^2 +y^2=25 at the point (3, -4)
Lostsunrise [7]
Hello : 
the center of this cercle is : O( 0, 0)
calculate the slope  m of the line : OA    .. A (3,-4)
m= (yA - yO) / (xA- xO) 
m = (-4-0)/(3-0)
m= -4/3
if : k the slope of the tangent : k×m = -1   (the tangent perpendiclar of : OA)
k× (-4/3) = -1
k = 3/4
an equation of this tangent is : y - (-4) = (3/4)(x-3)

7 0
3 years ago
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