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3 years ago

Solve [3(4-1)-7] - [6-(4-9)]

Mathematics

1 answer:

d1i1m1o1n [39]3 years ago

7 0

Answer:

-9

Step-by-step explanation:

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DiKsa [7]

The answer Is the option C

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3 years ago

An automobile manufacturer claims that its car has a 57.7 miles/gallon (MPG) rating. An independent testing firm has been contra

vampirchik [111]

Answer:

The value of test statistic

|Z| = |-2.2883| = 2.2883

Step-by-step explanation:

Step(i):-

Given that the mean of the Population = 57.7miles/gallon

The standard deviation of the Population = 1.9

The mean of sample x⁻ = 57.4

Given that the sample size 'n' =210

level of significance = 0.1

Step(ii):-

Test statistic

$Z = \frac{x^{-}-mean }{\frac{S.D}{\sqrt{n} } }$

$Z = \frac{57.4-57.7}{\frac{1.9}{\sqrt{210} } }$

Z = -2.2883

|Z| = |-2.2883| = 2.2883

Final answer:-

The value of test statistic

|Z| = 2.2883

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3 years ago

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NARA [144]

Answer:

1570.8

Step-by-step explanation:

Radius=1/2 Diameter

V=PiR^2h

v=3.1416(10m)^2x5

v=1570

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3 years ago

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Levart [38]

Answer:

b. 9h

Step-by-step explanation:

Volume of the cube = a*a*a

Volume of the cube = 3*3*h = 9h

But in reality for cube it should be 3*3*3= 27, because of the all edges of a cube are equal.

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3 years ago

Solve: 3[-x+(2x=1)]=x-1 I can't distribute so I don't know what to do.

Nat2105 [25]

Answer:

Below

Step-by-step explanation:

● 3 ( -x +2x - 1) = x - 1

● 3 ( -x -1 ) = x - 1

● -3x -3 = x - 1

Add -x to both sides

● -3x -3 - x = x -1 -x

● -4x -3 = -1

Add 3 to both sides

● -4x - 3 + 3 = -1 + 3

● -4x = 2

Divide both sides by -4

● -4x/-4 = 2/-4

● x = -1/2

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3 years ago