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MissTica
2 years ago
5

Me ayudan a resolverlo por favor (3x+8y+8)+(4x+6y-6)

Mathematics
1 answer:
Anna007 [38]2 years ago
5 0

Answer:

7x + 14y + 2

Step-by-step explanation:

(3x+8y+8)+(4x+6y-6)

3x + 8y + 8 + 4x + 6y - 6

3x + 4x + 8y + 6y + 8 - 6

7x + 14y + 2

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If you have a list of all three digit numbers that can be written using only the digits 1,2,3,4, and 5.
Yuri [45]

Answer:

61/125 or 0.488

Step-by-step explanation:

Total = 5×5×5 = 125

Numbers with no 4 = 4×4×4 = 64

Atleast one 4= 125-64 = 61

P(atleast one 4) = 61/125 or 0.488

8 0
3 years ago
Read 2 more answers
A random sample of 121 automobiles traveling on an interstate showed an average speed of 65 mph. From past information, it is kn
loris [4]

Answer:

95 percent confidence interval for μ is determined by

(60.688 ,  69.312)

a) be the same

Step-by-step explanation:

<u>Step (i)</u>:-

Given data a random sample of 121 automobiles traveling on an interstate showed an average speed of 65 mph.

The sample size is n= 121

The mean of the sample x⁻ = 65mph.

The standard deviation of the population is 22 mph

σ = 22mph

<u>Step (ii) :</u>-

Given  The 95 percent confidence interval for μ is determined as

(61.08, 68.92)

we are to reduce the sample size to 100 (other factors remain unchanged) so

given The sample size is n= 100

The mean of the sample x⁻ = 65mph.

The standard deviation of the population is 22 mph

σ = 22mph

<u>Step (iii)</u>:-

95 percent confidence interval for μ is determined by

(x^{-} - 1.96\frac{S.D}{\sqrt{n} } , x^{-} + 1.96 \frac{S.D}{\sqrt{n} } )

(65 - 1.96\frac{22}{\sqrt{100} } , 65 + 1.96 \frac{22}{\sqrt{100} } )

(65 - 4.312 ,65 +4.312)

(60.688 ,  69.312) ≅(61 ,69)

This is similar to (61.08, 68.92) ≅(61 ,69)

<u>Conclusion</u>:-

it become same as (61.08, 68.92)

4 0
3 years ago
I need help with this
yanalaym [24]

The answer is the "y" value of (2, 3),


So the answer is (C), y = 3

6 0
3 years ago
Help me solve this..! Please!
stiv31 [10]

Answer:

x=2

Solve for x by simplifying both sides of the equation, then isolating the variable.


3 0
3 years ago
How much greater is the area of a square with a side length of 9 inches than the area of a circle with a radius of 3 inches?
fredd [130]
The area of the square is 81 sq in, and the area of the circule is (3.14)(3 in)^2, or approx 3.14(9) sq in, or approx  28.27 sq in.

Subtract:  81 sq in - 28.27 sq in = approx. 52.73 sq in.

The difference is 52.73 sq in; the square is larger, the circle smaller.
7 0
3 years ago
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