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Tju [1.3M]
3 years ago
12

Need help plz !!!!!!! Due today

Mathematics
1 answer:
Serggg [28]3 years ago
7 0

Answer:

I know a little of this

Step-by-step explanation:

ok so what you do is for example take both of the small equation with the same variable and equal them to each other then plug in to the other

ex. 7x-31 =5x-8 solve this the plug what you get into the y in equation 4(y) +27

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29. The mean value of land and buildings per acre from a sample of farms is $1500, with a standard deviation of $200. The data s
julia-pushkina [17]

Answer: 68.27%

Step-by-step explanation:

Given : Mean value of land and buildings per acre from a sample of farms :

\mu=\$1500

\sigma= \$200

The data set has a bell-shaped distribution. i.e. it follows Normal distribution.

Using z=\dfrac{x-\mu}{\sigma} , for x= 1300 , we have

z=\dfrac{1300-1500}{200}=-1

For x= 1700 , z=\dfrac{1700-1500}{200}=1

Using standard normal z-value table,

P-value = P(-1<z<1)=1-2P(z>|1|)=1-2(0.1586553)=0.6826894\approx0.6827  [Round to nearest 4 decimal places.]

i.e. The percent of farms whose land and building values per acre are between $1300 and $1700 = 68.27%

3 0
3 years ago
What is the measure of angle CAE??
Luden [163]
The answer is B (120)
4 0
3 years ago
What is the length of fathoms shadow?
Oksi-84 [34.3K]

Answer:

ummmmmmmmm hard to say

Step-by-step explanation:

5 0
3 years ago
Suppose you know that 10% of 250 is 25. How could you use<br> that information to find 30% of 250?
Nookie1986 [14]

Answer:

triple the answer

Step-by-step explanation:

.1×250=25

.3×250= 75

25×3=75

7 0
3 years ago
Help i give 5 stars and a crown​
oksano4ka [1.4K]

Answer:

A. 82°

B. 144°

C. 75°

D. 150°

E. 241°

F. 80°

Step-by-step explanation:

A circle is 360°

A. 360 - 278 = 82 °

B. 360 - (124 + 92) = 144 °

C. 360 - (255 + 30) = 75 °

D. 360 - (118 + 30 +62) = 150 °

E. 360 - (21 +41 + 57) = 241 °

F. 360 - (30 + 60 + 80 + 110) = 80°

Also, the 80° is congruent so it's the same on both sides.

4 0
2 years ago
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