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storchak [24]
3 years ago
14

Evaluate the expression 80 + (8 x 4) ÷ 2

Mathematics
1 answer:
AURORKA [14]3 years ago
4 0

Answer:

        80 + (8*4)/2    =96

Step-by-step explanation:

Given :

80 + (8 x 4) ÷ 2

                             80 + (8*4)/2

This expression can be written in form of:

                      80+\frac{(8*4)}{2}

Solving the expression further:  

                     80+\frac{32}{2}

                =80+16

                  =96

So the value of the above expression after solving is 96

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A pencil consists of a cone stacked on top of a cylinder. The diameter of the cylindrical base of the pencil is 10 mm and the he
Anna11 [10]

Answer:

790\pi\,\,mm^2

Step-by-step explanation:

Given: The diameter of the cylindrical base of the pencil is 10 mm and the height of the cylinder is 70 mm, while the height of the cone is 12 mm

To find: surface area of the pencil

Solution:

Radius of the cone = Radius of the cylinder (r) = diameter/2 = \frac{10}{2}=5\,\,mm

Height of the cylinder (H) = 70 mm

Height of the cone (h) = 12 mm

Slant height of the cone (l) = \sqrt{r^2+h^2}=\sqrt{5^2+(12)^2}=\sqrt{25+144}=\sqrt{169}=13\,\,mm

Curved surface area of cone = \pi rl=\pi (5)(13)=65\,\pi \,\,mm^2

Surface are of cylinder = curved surface area of cylinder + base area of cylinder

=2\pi rH+\pi r^2\\=\pi r(2H+r)\\=\pi(5)\left [ 2(70)+5 \right ]\\=5 \pi\left ( 140+5 \right )\\=725\pi\,\,mm^2

So,

surface area of the pencil = Curved surface area of cone + Surface are of cylinder = 65\pi+725\pi=790\pi\,\,mm^2

5 0
4 years ago
Which model is 85% shaded
aivan3 [116]

Answer:

The first one is correct.

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
<img src="https://tex.z-dn.net/?f=%3Cbr%3E%0Ay%3D%20x%5E%7B2%7D%20-9" id="TexFormula1" title="&amp;#10;y= x^{2} -9" alt="&amp;#1
svp [43]
Simple...

y=x^{2} -9

y= x^{2} -9

It's quite easy to see x^{2} = x^{2}

Thus, any value of x makes the equation true.

Thus, your answer.
7 0
3 years ago
What is the answerrrrr to this
Alex_Xolod [135]
Area = 140

16 x 8 = 128

16-12 = 4

(6x4)/2 = 12

128 + 12= 140
8 0
3 years ago
Describe the general solution (all answers) to a quadratic style equation involving trig functions. (Use only exact values where
qwelly [4]

Answer:

Step-by-step explanation:

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3 years ago
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