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aniked [119]
3 years ago
10

Can someone please help me with this quick

Mathematics
1 answer:
Rasek [7]3 years ago
8 0
-3(5t+2) 

.....................................................................................................................
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What is the average of -2.5, 5.2, 1.7, and -0.8?
Leokris [45]
The average of these numbers is nine tenths, \frac{9}{10}, or .9, however you would like to put it.
5 0
3 years ago
All 4 questions please
scZoUnD [109]

Answer:

  1. π = S/2πrh
  2. v = √2E/m
  3. b = (-7a+c)/2
  4. x =3y-1

Step-by-step explanation:

1.

S = 2\pi rh\\Divide\:both\sides\:of\:the\:equation\:by\:2rh\\\\\frac{S}{2rh} = \frac{2 \pi rh}{2 rh} \\\\\pi = \frac{S}{2rh}

2.

E = \frac{1}{2} mv^2\\\\E = \frac{mv^2}{2} \\\\Cross\:multiply\\\\2E =mv^2\\Divide\:both\:sides\:of\:the\:equation\:by\:m\\\frac{2E}{m} = \frac{mv^2}{m} \\\\\frac{2E}{m} =v^2\\Square\:root\:both\:sides\:of\:the\:equation\\\sqrt{\frac{2E}{m} } = \sqrt{v^2} \\\\\sqrt{\frac{2E}{m} } =v\\\\v =\sqrt{\frac{2E}{m} }

3.

7a+2b =c\\Isolate\:b\\\\2b =c-7a\\2b= -7a+c\\Divide\:both\:sides\:of\:the\:equation\:by \:2\\\frac{2b}{2} =\frac{-7a+c}{2} \\\\b = \frac{-7a+c}{2}

4.

y = \frac{1}{3} (x+1)\\\\y = \frac{x+1}{3}\\\\Cross\:multiply \\3y =x+1\\Isolate \:x\\3y -1=x\\\\x =3y-1

7 0
3 years ago
Typing 731 words in 17 minutes
BaLLatris [955]

Answer:

im just testing this but if you did that you would be slow as heck.

Step-by-step explanation:

17 minutes is decent so...

8 0
3 years ago
Solve the simultaneous equations: <br> <img src="https://tex.z-dn.net/?f=y%20%3D%20%20x%5E%7B2%7D%20-%203x%20-%203%20" id="TexFo
Paraphin [41]
I hope this helps you

8 0
3 years ago
If Ryuk eats 7 apples for every 50 names Light writes in the death note, how many apples will he have eaten after Light writes 5
alex41 [277]

Answer:

70 apples

Step-by-step explanation:

We can use a ratio to solve

7 apples        x apples

--------------  = -------------

50 name     500 names

Using cross products

7 * 500 = 50x

Divide by 50

7 * 500/50 = 50x/50

70 =x

6 0
3 years ago
Read 2 more answers
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