3 years ago

Evaluate f(x) =-3x-3 for x = -2

Mathematics

1 answer:

vaieri [72.5K]3 years ago

5 0

Answer:

Step-by-step explanation:

f(-2)=-3x(-2)-3

f(-2)=6-3

f(-2)=3

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I'm thinking of a number. When I multiply by 8 and add –1, I get –17. What's my number?

frosja888 [35]

Say that you're thinking of number $x$

You multiply it by 8, and have $8x$

You add -1 (i.e., you subtract 1) and have $8x-1$

This equals -17, so you have

$8x-1=-17$

Add 1 to both sides

$8x=-16$

Divide both sides by 8:

$x=-2$

So, you were thinking of -2.

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3 years ago

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Ilia_Sergeevich [38]

Answer:

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Step-by-step explanation:

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3 years ago

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I am ust typing this so it will let me post this But Please Help

andre [41]

Answer:

${4}^{3} = 64$

Step-by-step explanation:

$\frac{ {4}^{8} }{ {4}^{5} } = {4}^{3}$

Subtract the numerator exponent from the denominator exponent.

$8 - 5$

4 0

3 years ago

After the first term in a sequence, the ratio of each term to the preceding term is r. If the first term is a, what is the third

irinina [24]

Answer:

The 3rd term is

$ar^2$

Step-by-step explanation:

From the given information, the first term of the sequence is

$a_1=a$

The common ratio of the sequence is

$r$

The explicit formula for a geometric sequence is :

$a_n=a_1(r^{n-1})$

To find the third term, we put n=3 to get:

$a_n=a(r^{3-1})$

This simplifies to:

$a_3=ar^2$

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3 years ago

You are dealt one card from a satndard 52-card deck. Find the probability of being dealt an ace or a 7

ruslelena [56]

Answer:

2/13 or 15.38%

Step-by-step explanation:

Number of Aces in a deck = 4

Number of 7s in a deck = 4

Number of cards in a deck = 52

Probability of A or 7 = (4 Aces + 4 Sevens) / 52 cards 8 cards / 52 cards

This simplifies to 2/13 or 15.38%

3 0

2 years ago