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3 years ago

If you’re good at algebra could somebody help me please?

Mathematics

1 answer:

Mama L [17]3 years ago

3 0

Answer:

a). f(0) = 7

b). f( $\frac{1}{3}$ ) = 6

c). f(-5) = 22

d). x = 9

Step-by-step explanation:

The given function is f(x) = -3x + 7

a). For x = 0

f(0) = -3(0) + 7

= 0 + 7

= 7

b). For x = $\frac{1}{3}$

f( $\frac{1}{3}$ ) = $(-3)(\frac{1}{3})+7$

= -1 + 7

= 6

c). For x = (-5)

f(-5) = -3(-5) + 7

= 15 + 7

= 22

d). For f(x) = (-20)

-20 = -3x + 7

3x = 20 + 7

3x = 27

x = 9

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ANSWER

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EXPLANATION

If the two equations intersect at $(50,60)$ then this point must satisfy the two equations.

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We substitute $(50,60)$ in to erquation (1)

$3(50)+2(60)=270$

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$270=270$

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We now substitute $(50,60)$ in to erquation (2) also

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3 years ago

Timmy is building a new website. Right after he starts, he has 2 visitors. He expects his visitors to increase according to a mo

Alex73 [517]

Answer:

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Step-by-step explanation:

Equation for the number of visitors:

The equation for the number of visitors Timmy's new website receives after t weeks is:

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In which b is the number of visitors rightly after he starts.

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This means that $b = 2$ , so:

$v(t) = 10t + 2$

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This is v(4). So

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He gets 42 visitors 4 weeks after starting to build his website.

How any new visitors does he get per week?

After 0 weeks:

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After 1 week:

$v(1) = 10(1) + 2 = 10 + 2 = 12$

2 weeks:

After 2 week:

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3 years ago

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3 years ago

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Answer:

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Step-by-step explanation:

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andre [41]

Answer:

4. 50,000 square miles

5. The office would round to $800,000 instead of $700,000 because they would lose that needed $35,495. If they rounded down, their budget would be cut short, and they won’t have enough money for the office.

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Step-by-step explanation:

4. In this question, we’re rounding the number, “54,555” go the nearest ten thousand. When rounding numbers you look at the number next to the digit your rounding. In this case, since the second number is not 5 or higher, we round it to 50,000 as that’s closer than 60,000.

5. Like I stated above: if they round to the lowest amount, they won’t have enough money to but what they need. Therefore, even if according to rounding it needs to be lower, it will not be beneficial to the company.

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9. Since the number next to the underlined nunber is 6, we round it to the closest number which is 260,000

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