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3 years ago

Evaluate the expression for x = 4: 6+ (10 - x)2 - 20

Mathematics

1 answer:

Liono4ka [1.6K]3 years ago

4 0

6 + (10 - 4)2 - 20 = 6 + 12 - 20 = 18 - 20 = -2

Assuming that the two in the middle of the expression is multiplied by (10 - x) the answer would be -2. I apologize if I did not read your question right.

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What is the solution to f (x)=g (x), if f (x)=-x and g (x)=x

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3 years ago

An automobile manufacturer claims that its jeep has a 53.9 miles/gallon (MPG) rating. An independent testing firm has been contr

Advocard [28]

Answer:

Value of the test statistic, $z_{test} = - 1.17$

Step-by-step explanation:

Null hypothesis, $H_{0}: \mu = 53.9$

Alternative hypothesis, $H_{a} : \mu \neq 53.9$

Sample mean, $\bar{X} = 53.7$

Sample size, n = 110

Standard deviation, $\sigma = 1.8$

Significance level, $\alpha = 0.02$

The value of the test statistics is given by the formula:

$z_{test} = \frac{\bar{X} - \mu}{\frac{\sigma}{\sqrt{n} } } \\z_{test} = \frac{53.7 - 53.9}{\frac{1.8}{\sqrt{110} } } \\z_{test} = - 1.17$

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3 years ago

How do i write 5,972,000,000,000,000,000,000,000kg in Scientific Notation

never [62]

In order to write this in scientific notation, we must move the decimal from the beginning all the way to between the 5 and the 9
Note: you can move the decimal anywhere you want but typically scientific notation will have the decimal in between the first and second digit.

Since we move the decimal 24 digits to the right, our answer will be

5.972 * 10^24
or
5.972E24

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8 0

3 years ago

Read 2 more answers

How do I do solving systems of equations by substitution?

alexdok [17]

Step 1:Solve one of the equations for either x = or y = .

Step 2:Substitute the solution from step 1 into the other equation.

Step 3:Solve this new equation.

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I hope this helps!

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4 years ago

Multiply the sum of -13/8 and 5/12 by their difference.

REY [17]

Answer:

1421/576

Step-by-step explanation:

Sum = - 13/8 + 5/12 = - 39/24 + 10/24 = - 29/24

Difference = - 13/8 - 5/12 = - 39/24 - 10/24 = - 49/24

Sum * Difference = (-29/24)*(-49/24) = 1421/576

6 0

2 years ago

Evaluate the expression for x = 4: 6+ (10 - x)2 - 20​

Evaluate the expression for x = 4: 6+ (10 - x)2 - 20