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Soloha48 [4]
1 year ago
5

Evaluate 5x³ + 2 for x = -1. 0 -3 04 06 0-7

Mathematics
2 answers:
zysi [14]1 year ago
6 0

Answer:

-3

Step-by-step explanation:

5x³ + 2 , when x = -1

5(-1)³ + 2

= -5 + 2

= -3

vladimir1956 [14]1 year ago
6 0

Answer:

-3

(first option listed)

Step-by-step explanation:

we know that 5x³ + 2 is our expression

we want to "evaluate" (find/solve for) when x = -1

we can do this by plugging in -1 to the expression:

5x³ + 2          {note, x = -1}

5(-1)³ + 2    {-1³ = -1}

5(-1) + 2

(-5) + 2

-5 + 2 = - 3

so, when x = -1, the statement is equivalent to -3

hope this helps! :)

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   x         40
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3 years ago
The manager of a supermarket wants to obtain information about the proportion of customers who dislike a new policy on cashing c
alex41 [277]

Answer:

n = 61 costumers

Step-by-step explanation:

For calculating the number of costumers he should sample we use the next equation:

n = \frac{z_{1-\alpha/2}^{2}p(1-p)}{E^{2} }

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How we don't know the value of p, we can estimate it like p = 0.5

∝ = 1-0.98 = 0.02

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4 0
3 years ago
Toa has 4 dimes a 12 nickels.Gail has 2 dimes and 3 nickels. What would be the ratio of dimes to nickels if they put these toget
Free_Kalibri [48]

Answer:

2 : 5

Step-by-step explanation:

Ratio expresses the relationship between two or more numbers. It shows the frequency of the number of times that one value is contained within other value(s).

We are to determine the ratio of dimes to nickels

total sum of nickels = 3 + 12 = 15

total sum of dimes = 4 + 2 = 6

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three can divide each of the numbers

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4 0
2 years ago
Mitchell took a math exam today. If he got 63 out of 84 questions correct, what percentage did Mitchell get wrong? (answer using
Mars2501 [29]

Answer:

75%


Step-by-step explanation:

If Mitchell took a math exam and got 63 out of 84 questions correct, that would turn into the fraction: 63/84

In order to convert this to a decimal, you divide 84 by 63 (since every fraction is a division problem), and get 0.75.

When you change decimals into percents, you move the decimal point two times to the right. So, that would be 75.

Then you add the percent symbol and you're done!

I hope that helped :)

7 0
2 years ago
Read 2 more answers
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