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3 years ago

Which expression is equivalent to 5 - 8? O -5 +8 O 5+ (-8) 0 5 + 8 O 8 + (-5)

Mathematics

1 answer:

Brut [27]3 years ago

8 0

Answer:

is "5+(-8)"

Step-by-step explanation:

5 - 8 = -3

5 + (-8)

5-8 = -3

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please help. answer is 62.1m(squared) and the objects are composite! please show the work, no matter what i do i cant seem to ge

yuradex [85]

Answer:

$SA=62.1\ m^2$

Step-by-step explanation:

step 1

Find the surface area of the smaller rectangular prism

$SA=2B+Ph$

where

B is the area of the base

P is the perimeter of the base

h is the height of the prism

$SA=2[(2.5)(1.5)]+2(2.5+1.5)(1.5)$

$SA=7.5+12=19.5\ m^2$

step 2

Find the surface area of the cube

$SA=6s^2$

where

s is the length side of the cube

$SA=6(2.5^2)=37.5\ m^2$

step 3

Find the lateral area of the cylinder

$LA=\pi DL$

where

D is the diameter of the base

L is the length of cylinder

$LA=(3.14)(0.5)(3.5)=5.495\ m^2$

step 4

Find the area of the base of cylinder

$A=\pi r^{2}$

we have

$r=0.5/2=0.25\ m$ ----> the radius is half the diameter

$A=(3.14)(0.25)^{2}=0.19625\ m^2$

step 5

Find the surface are of the composite figure

we know that

The surface area of the composite figure is equal to the surface area of the smaller rectangular prism plus the lateral area of the cylinder, plus the surface area of the cube, minus the area of the two bases of cylinder

$SA=19.5+5.495+37.5-2(0.19625)=62.1\ m^2$

5 0

3 years ago

Please answer, i will give 20 points!!!

Lapatulllka [165]

Answer:

Step-by-step explanation:

Pentagon has 5 sides

The formula for finding the sum of the measure of the interior angles is (n - 2) * 180

(5-2)×180= 3×180=540

To get each interior angles

540/5 = 108

180 -108 = 72

To get x

72+72+x= 180 (sum if angles in a triangle)

144+x= 180

x = 180 -144 = 36

2. x is part of the interior angles = 108

4 0

3 years ago

Read 2 more answers

At a Saturday morning job, Beatriz stuffs 611 envelopes with 2 pages each and must pack them into y boxes for easy transportatio

il63 [147K]

13 boxes

611 envelopes

611/13 = 47 boxes

7 0

3 years ago

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Name the property of equality that justifies the statement if a equals b then b equals a

SpyIntel [72]

That would be the commutative property

3 0

3 years ago

Is that correct? I don’t think it is, can someone tell me the answer

lidiya [134]

It is right but what's the full question

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2 years ago