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asambeis [7]
3 years ago
12

What is 8c + 10b ÷ 7a if c = 7, b = 12, and a = 5 Please give a full and good explanation for a brainliest...​

Mathematics
2 answers:
PolarNik [594]3 years ago
8 0

Answer:

141  5/7

Step-by-step explanation:

8c + 10b ÷ 7a

Let c = 7, b = 12, and a = 5

8*7 + 10*12 ÷ 7*5

Multiply and divide from left to right

56+120 ÷7*5

56+ 600/7

Get a common denominator

392/7 + 600/7

992/7

Change from an improper fraction to a mixed number

141  5/7

Lisa [10]3 years ago
6 0

Answer:

    416                    3

=  --------    or   59 ----

       7                     7

Step-by-step explanation:

8c + 10b ÷ 7a

if c = 7, b = 12, and a = 5

plug in values:

= 8(7) + 10(12) ÷ 7(5)

= 56 + 120 / 35

= 56 + 24/7 ---- convert into factions

  56 * 7      24

=  --------  + ------

        7         7

sine the denominator are equal, combine the fraction

    56 * 7 + 24

=  -----------------

             7

    416                    3

=  --------    or   59 ----

       7                     7

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A gumball has a diameter that is 66 mm. The diameter of the gumball's spherical hollow core is 58 mm. What is the volume of the
grigory [225]

Answer:

Volume of gumball without including its hollow core is 48347.6 cubic mm.

Step-by-step explanation:

Given:

Diameter of Gumball = 66 mm

Since radius is half of diameter.

Radius of gumball = \frac{diameter}{2}=\frac{66}{2} =33 \ mm

Now We will first find the Volume of Gumball.

To find the Volume of Gumball we will use volume of sphere which is given as;

Volume of Sphere = \frac{4}{3}\pi r^3

Now Volume of Gumball = \frac{4}{3}\times3.14 \times (33)^3 = 150456.24 \ mm^3

Also Given

Diameter of gumball's spherical hollow core = 58 mm

Since radius is half of diameter.

Radius of gumball's spherical hollow core = \frac{diameter}{2}=\frac{58}{2} =29 \ mm

Now We will find the Volume of gumball's spherical hollow core.

Volume of Sphere = \frac{4}{3}\pi r^3

So Volume of gumball's spherical hollow core = \frac{4}{3}\times3.14 \times (29)^3 = 102108.61 \ mm^3

Now We need to find volume of the gumball without including its hollow core.

So, To find volume of the gumball without including its hollow core we would Subtract Volume of gumball spherical hollow core from Volume of Gumball.

volume of the gumball without including its hollow core = Volume of Gumball - Volume of gumball's spherical hollow core = 150456.24\ mm^3 - 102108.61\ mm^3 = 48347.63\ mm^3

Rounding to nearest tenth we get;

volume of the gumball without including its hollow core = 48347.6\ mm^3

Hence Volume of gumball without including its hollow core is 48347.6 cubic mm.

8 0
3 years ago
Expand the expression and collect like terms.<br><br> - g - 4(2g - 6)
Readme [11.4K]

Answer:

A.T.Q

first we need to open the bracket

,when we open breaket the sign in the bracket will change

so the question is

- g - 4 + 2g + 6

now, we take like terms together

- g + 2g - 4 + 6

g + 2 is the answer by solving

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3 years ago
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alukav5142 [94]
X is equal to 8. The work for that is on the attached picture.

5 0
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Please help with this question
yarga [219]
5654.87 Hope this helps!
4 0
2 years ago
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Answer:

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Step-by-step explanation:

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