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Flauer [41]
3 years ago
14

What is 2(8+1)(4v+7) URGENT !!!

Mathematics
2 answers:
MAXImum [283]3 years ago
8 0
72v+126 is the answer
alexgriva [62]3 years ago
7 0
The answer is 72v+126
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Solve K = 1/2 mv^2 for m
Dahasolnce [82]

Answer:m=2k/v^2

Step-by-step explanation:

The first thing you should do is divide 1/2 on both sides. Now you have 2k=mv^2. Then divide v^2 from each side and you get a final answer of (2k/v^2)=m

4 0
2 years ago
Larry the librarian and Courtney the lawyer are having a debate. Larry contends that the library is bigger than the courthouse i
professor190 [17]

Answer:

Library's Area= 5200

Courthouse' Area= 5027

<u>Larry</u> is correct.

Step-by-step explanation:

5 0
3 years ago
The t value for a 99% confidence interval estimation based upon a sample of size 10 is
Aliun [14]
Answer:
For a sample size of 10, the t-value is about 3.25 (from tables) at a 99% confidence interval.

Explanation:
When the standard deviation for the population is not known, the confidence interval estimate for the population mean is performed with the Student's t-distribution.
The confidence interval for the mean is calculated as
(\Bar{x}- t\frac{s}{\sqrt{n}} , \, \Bar{x}+ t\frac{s}{\sqrt{n}}
where
 \Bar{x} = sample mean,
s = sample standard deviation,
t = t-value (provided in tables),
n =  sample size.

When reading the t-value, (n-1) is called the df or degrees of freedom.

7 0
3 years ago
CAN SOMEONE HELP MEEEEE
Lorico [155]

Answer:

Ok 1 is 54 yards 2 is 225 KM 3 64 Ft

please give braineist I never got 1 thank you maybe we can be friends !!! :) :D

6 0
3 years ago
Read 2 more answers
Please help, thank you
solmaris [256]

Answer:

1.

8x + 6y = 28

9x + 3y = 39

Set to equal y.

8x + 6y = 28

6y = -8x + 28

y = -8/6x + 28/6

y = -4/3x + 14/3

9x + 3y = 39

3y = -9x + 39

y = -9/3x + 39/3

y = -3x + 13

Set equal to each other.

-4/3x + 14/3 = -3x + 13

Combine like terms.

5/3x = 25/3

Multiply by 3/5

x = 5

Plug x in.

y = -3(5) + 13

y = -15 + 13

y = -2

(5, -2)

2.

-2x - 9y = -3

-7x - 9y= -33

Set equal to y.

-2x - 9y = -3

-9y = 2x - 3

y = -2/9x + 3/9

y = -2/9x + 1/3

-7x - 9y= -33

-9y = 7x - 33

y = -7/9x + 33/9

y = -7/9x + 11/3

Set equal to each other

-2/9x + 1/3 = -2/9x + 1/3

0 = 0

infinitely many solutions

8 0
3 years ago
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