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4 years ago

Match teachers comments to definitionsplease help guys ♡♡♡♡♡

Mathematics

2 answers:

Rashid [163]4 years ago

3 0

Duru’s-1st teacher comment
Oliver’s-3rd teacher comment
Carlos’s-2nd teacher comment

I really hope you get me:)))

garik1379 [7]4 years ago

3 0

Answer:

Duru's definition : Stupendous! Well done.

Oliver's definiton:

You seem to be confusing a circle and a sphere

Carlos' definition : Your definition needs to be much more precise

hope this helps :)

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PLZ HELPPP!!

umka21 [38]

Answer:

102.2

Step-by-step explanation:

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2 years ago

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Please at least help me with one of them cause I have no idea

Fudgin [204]

Answer:

Solving $v = \frac{4}{3}\pi r^3$ for r gives us: $r=\sqrt[3]{\frac{3v}{4\pi}}$

Solving $a_{ave} = \frac{v_2-v_1}{t_2-t_1}$ for v2 gives us: $v_2 = (t_2-t_1)a_{ave}+v_1$

Step-by-step explanation:

Solving an equation for a variable or constant means that we have to isolate the value on one side of the equation or write the whole equation in terms of that variable or constant.

Now,

Solving $v = \frac{4}{3}\pi r^3$ for r

$v = \frac{4}{3}\pi r^3$

Multiplying whole equation by 3/4

$\frac{3}{4}.v = \frac{3}{4}.\frac{4}{3} \pi r^3$

$\frac{3}{4}v = \pi r^3$

Dividing by Pi on both sides

$\frac{3v}{4\pi} = \frac{\pi r^3}{\pi}\\\frac{3v}{4\pi} = r^3$

Taking cube root on both sides

$\sqrt[3]{r^3} = \sqrt[3]{\frac{3v}{4\pi}} \\r = \sqrt[3]{\frac{3v}{4\pi}}$

Now

Solving $a_{ave} = \frac{v_2-v_1}{t_2-t_1}$ for v2

Multiplying both sides by (t2-t1)

$(t_2-t_1)a_{ave} = \frac{v_2-v_1}{t_2-t_1}(t_2-t_1)\\(t_2-t_1)a_{ave} = v_2-v_1$

Adding v1 on both sides

$(t_2-t_1)a_{ave}+v_1 = v_2-v_1+v_1\\(t_2-t_1)a_{ave}+v_1 = v_2$

Hence,

Solving $v = \frac{4}{3}\pi r^3$ for r gives us: $r=\sqrt[3]{\frac{3v}{4\pi}}$

Solving $a_{ave} = \frac{v_2-v_1}{t_2-t_1}$ for v2 gives us: $v_2 = (t_2-t_1)a_{ave}+v_1$

6 0

3 years ago

If you multiply or divide both sides of an inequality by a negative number, you must __________ the inequality sign.

4vir4ik [10]

Answer:

Step-by-step explanation:

When you multiply both sides by a negative value you make the side that is greater have a larger negative number, which actually means it is now less than the other side. This is why you mathematically have to flip the sign whenever you multiply by a negative number.

5 0

3 years ago

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3x + 9x= 6x + 42 i would also like an explanation

lys-0071 [83]

Answer:

x=7

Step-by-step explanation:

3x+9x=6x+42 add simalar elements 3x+9x=12x

12x=6x+42

12x-6x=6x+42-6x subract 6x from both sides

6x=42 simplify

6x/6=42/6 divide both by 6

x=7

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3 years ago

It is Jamie’s birthday and her mom just bought her an Xbox. She’s trying to find the surface area of the box so she can determin

Alina [70]

10 times 12 is 120 times 24 equals 2,880 sq2

5 0

3 years ago

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Match teachers comments to definitionsplease help guys ♡♡♡♡♡​

Match teachers comments to definitionsplease help guys ♡♡♡♡♡