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3 years ago

PLEASE HELP ME QUICKLY

Mathematics

2 answers:

mr Goodwill [35]3 years ago

8 0

Answer:

It would be 6.8

zhuklara [117]3 years ago

4 0

I believe that the answer would be 6.8

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An equation is shown

notka56 [123]

Answer: The answer is A. n=11.

Step-by-step explanation: To find the value of n in the equation, you’ll need to isolate the variable by dividing each side by factors that don't contain the variable.

3 0

3 years ago

If 4a - 13 = 6b + 35 = 8c -17 = d, find the smallest possible value of a + b + c + d.

Afina-wow [57]

Answer:

The smallest possible value of a+b+c+d is: 4

Step-by-step explanation:

since we are given that:

4a - 13 = 6b + 35 = 8c -17 = d

on taking the first two equality i.e. 4a-13=6b+35

we get $b=\dfrac{2}{3}a-8$

on using the first and third equality we have:

4a-13=8c-17

$c=\dfrac{1}{2}a+\dfrac{1}{2}$

also from the first and last equality we have:

d=4a-13

Hence,

$a+b+c+d=a+\dfrac{2}{3}a-8+\dfrac{1}{2}a+\dfrac{1}{2}+4a-13\\\\a+b+c+d=\dfrac{37a}{6}-\dfrac{41}{2}$

$a+b+c+d=\dfrac{37a-123}{6}$

the smallest possible value such that the expression a+b+c+d is positive will be claculated as:

a+b+c+d>0

that means $\dfrac{37a-123}{6}>0$

$a>3.324$

But as a is an integer, hence the smallest such value is 4.

4 0

3 years ago

Any help would be appreciated ❤ ❤ Thank you

Paladinen [302]

The solid shape is a cone and a half sphere. So the equation would be (cone volume) + (1/2 sphere volume):
$cone = \frac{1}{3} \pi {r}^{2} h \\ sphere = \frac{4}{3} \pi {r}^{3} \\ object = ( \frac{1}{3} \pi {r}^{2} h) + \frac{1}{2} ( \frac{4}{3} \pi {r}^{3} )$
If the volume of the cone is 270pi and the height of the cone is 10, then:
$270\pi = \frac{1}{3} \pi {r}^{2} (10) \\ 27 = \frac{1}{3} {r}^{2} \\ 80 = {r}^{2} \\ r = 9$
The radius of the object is 9 cm. Therefore, we can plug into the formula for the total volume:
$object = 270\pi + \frac{1}{2} ( \frac{4}{3} \pi {(9)}^{3} ) \\ = 270\pi + \frac{2}{3} (729\pi) \\ = 270\pi \: + 243\pi \\ = 513\pi$
The total volume is 513 pi cm^3

7 0

3 years ago

Will help you with something if u help me plsss

Black_prince [1.1K]

Answer:

21900

Step-by-step explanation:

Find 8% of 7500 (600) and multiply it by 24 (amount of months) then add that to 7500

8 0

2 years ago

12 m/min equals how many cm/s?

victus00 [196]

Equals meter minute 20 cm/s

7 0

3 years ago