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Nezavi [6.7K]
3 years ago
7

I really need help I don't understand this

Mathematics
2 answers:
navik [9.2K]3 years ago
7 0

Answer:

ok

Step-by-step explanation:

yes

frutty [35]3 years ago
6 0
Ok um text me I will tell you
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Solve the equation 16=9+x
vitfil [10]

Answer:

x = 7

Step-by-step explanation:

9 get subtracted on both sides and then 16-9 is 7

5 0
2 years ago
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Please teach me on how to answer this question. (addmath question)
arsen [322]

We know that \overline{x}=8 so:

\overline{x}=8\\\\\\\dfrac{\sum\limits_{k=1}^7\,x_k}{7}=8\qquad|\cdot7\\\\\\ \boxed{\sum\limits_{k=1}^7\,x_k=56}

We want to calculate:

\sum\limits_{k=1}^7\,\big(2x_k-3\big)^2=\sum\limits_{k=1}^7\,\big(4x_k^2-12x_k+9\big)=\\\\\\=\sum\limits_{k=1}^7\,4x_k^2-\sum\limits_{k=1}^7\,\big12x_k+\sum\limits_{k=1}^7\,9=4\sum\limits_{k=1}^7\,x_k^2-12\sum\limits_{k=1}^7\,x_k+\sum\limits_{k=1}^7\,9=\\\\\\=4\cdot672-12\cdot56+7\cdot9=2688-672+63=\boxed{2079}

5 0
2 years ago
Use the distributive property to simplify -4(6-3y)
denpristay [2]

Answer:

12y-24

Step-by-step explanation:

-4(6-3y)

-24+12y

3 0
3 years ago
A carousel is an amusement ride consisting of a rotating...
Whitepunk [10]
To answer this question you will use the formula for circumference of a circle to find how far around one revolution is.

C = pi x d
     3.14 x 32
C = 100.48 feet

Multiply the distance around one time by 4.3 to get the distance traveled in one revolution and then multiply it by 3 for the 3 minutes.

100.48 x 4.3 x 3 = 1296.19 feet
This is approximate and is closest to answer choice D.
4 0
3 years ago
What whole number most closely estimates to <br><img src="https://tex.z-dn.net/?f=%20%5Csqrt%7B50%7D%20" id="TexFormula1" title=
zepelin [54]

Answer:

7

Step-by-step explanation:

since \sqrt{50}>\sqrt{49}=7

6 0
3 years ago
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