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malfutka [58]
3 years ago
6

Evaluate 5(6) -c ifc=7

Mathematics
2 answers:
zmey [24]3 years ago
8 0

Answer:

The answer should be 23.

Step-by-step explanation:

If C=7, then you just need to plug 7 into the equation.

5(6) - 7

From there, you just need to multiply 5 times 6 which is 30. After that you have 30-7 which gets you 23.

ahrayia [7]3 years ago
5 0
23.

Work:
5(6)-7
5(6)=30
30-7=23
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If y = kx, where k is a constant,<br> and y = 30 when x = 6, what is<br> the value of y when x = 3?
Svetradugi [14.3K]

Answer:

Step-by-step explanation:

Actually it's 11 because 11 is technically the same when added to constant of x =6 = 11

7 0
2 years ago
There are 9 times as many cubes in the black bag as in the green bag. The green bag has 12 cubes. How many cubes are in the blac
Delicious77 [7]

Answer:

108 cubes

Step-by-step explanation: 9 times 12 equals 108

9 • 12 = 108 cubes

4 0
2 years ago
Read 2 more answers
The method of tree ring dating gave the following years A.D. for an archaeological excavation site. Assume that the population o
blondinia [14]

The value of mean, standard deviation and interval from the method of tree ring dating is 1273 AD, 37 years, [1250,1296].

According to the statement

we have to find that the standard deviation, mean and the intervals from the given data.

So, According to the given data from the method of tree ring dating

The value of mean is

x-bar = (1271 + 1208 + 1229 + 1299 + 1268 + 1316 + 1275 + 1317 + 1275) / 9 = x-bar = 1273 AD

And now we find standard deviation :

s = √∑(xi - x-bar) / (N - 1)

∑(xi - x-bar)^2 = (1271 - 1273)2 + (1208 - 1273)2 + (1229 - 1273)2 + ... + (1275 - 1273)2

∑(xi - x-bar)^2 = (-2)2 + (-65)2 + (-44)2 + ... + (2)2

∑(xi - x-bar)^2 = 4 + 4225 + 1936 + 676 + 25 + 1849 + 4 1936 + 4

∑(xi - x-bar)^2 = 10,659

Now,

s^2 = 10659/8 = 1332

s = 37 years

So, standard deviation is 37 years.

We need the t-distribution table since the standard deviation is unknown.  Therefore, our degrees of freedom is 9 - 1 = 8 and the critical value is 1.860.  Set up the confidence interval for the mean:

[x-bar ± t*(s/√n)] = [1273 ± 1.860*(37/√9)]

[x-bar ± t*(s/√n)] = [1250,1296]

So, The value of mean, standard deviation and interval from the method of tree ring dating is 1273 AD, 37 years, [1250,1296].

Learn more about method of tree ring dating here

brainly.com/question/15107034

Disclaimer: This question was incomplete. Please find the full content below.

Question:

The method of tree ring dating gave the following years A.D. for an archaeological excavation site. Assume that the population of x values has an approximately normal distribution.

For more data please see the image below.

#SPJ4

4 0
1 year ago
So, A, B, D, or C???
allsm [11]

Answer:

c.

Step-by-step explanation:

Negative numbers are always less than positive numbers. 3/10 is less that 1/4:

Making the answer c.

6 0
3 years ago
Read 2 more answers
PLEASE HELP GUYS!! WILL GIVE BRAINLIEST IF CORRECT!!!!
True [87]

3.114

Step-by-step explanation:

Given slope of the line is 1.581,

Mean of the x-coordinate is 5.923,

Mean of the y-coordinate is 12.478

Equation of the line formula is  

y = mx + c

12.478 = 1.581 × 5.923 + c

⇒ 12.478 = 9.364263 + c

⇒ c = 12.478 – 9.364263  

⇒ c = 3.113737

⇒ c = 3.114 (Round off to three decimal places)

Hence, y-intercepts of the line to three decimal places is 3.114.

8 0
3 years ago
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