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emmainna [20.7K]
3 years ago
9

Evaluate 1x^3 –2x^2 – 4x- 6 at x = 4

Mathematics
1 answer:
Whitepunk [10]3 years ago
4 0

Answer:

10

Step-by-step explanation:

1x^3-2x^2-4x-6

x^3-2x^2-4x-6

(4)^3-2(4)^2-4(4)-6

64-2(16)-16-6

64-32-16-6

32-16-6

16-6

10

So when x=4, the output will be 10

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Whats a line passing<br> through the<br> points (0, 0) and<br> (5,-7)?
Ipatiy [6.2K]

Answer:

y = -7/5x

Step-by-step explanation:

First, we need to use the two points to find the slope.

m = y₁ - y₂ / x₁ - x₂

m = -7 - 0 / 5 - 0

m = -7/5

Now we know that the slope is -7/5. Now we'll substitute the information we've gathered into the point-slope form equation to get an equation.

y - y₁ = m(x - x₁)

y - (-7) = -7/5(x - 5)

y + 7 = -7/5x + 7

y = -7/5x

Therefore, the equation of the line is y = -7/5x.

7 0
3 years ago
Daniel rollerbladed 3 miles in 12 minutes. At this rate, how many miles will he rollerblade in 1 hour? Show your work.
Yakvenalex [24]

Answer:

Daniel is rollerblading at 15 miles per hour

Daniel can go 3 miles in 12 minutes so we do 12÷3 to find out how many minutes it takes to go 1 mile which is 4 now we do 60÷4 to get 15

Alternatively we could do 60÷12 to get 5 then do 3×5 to get 15

Step-by-step explanation:

3 0
3 years ago
Mr. Smith paid $36.36 for a carpet. This amount includes a tax of 10%. What was the cost of the carpet before tax?
ser-zykov [4K]

Answer:

32.72

Step-by-step explanation:

36.36/100

0.3636

0.3636 times 90 (I use 90 because 100-10=90) 10% tax, so 90% original cost.

32.72

8 0
3 years ago
Find the value of x. <br> Please help me!!!
Ksenya-84 [330]

Answer:

you guys have to become a muslim i sware to god its the right religion

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Step-by-step explanation:

6 0
3 years ago
The dimensions of Kara’s bedroom floor are 8 3/4 feet by 10 2/3. What if the area of her bedroom floor
olasank [31]

Answer:

93\frac{1}{3}

Step-by-step explanation:

The area of a bedroom floor is the width multiplied by the length. We know that the length's is 10\frac{2}{3} feet and the width is 8\frac{3}{4} feet. We just multiply the 2 fractions to find the area of her bedroom floor in feet squared

10\frac{2}{3} * 8\frac{3}{4}

→ There area various methods but I am going to use the improper fraction method. First convert the fractions into improper fractions

\frac{32}{3} *\frac{35}{4}

→ We can cancel out 4 and 32 with 1 and 8

\frac{8}{3} *\frac{35}{1}

→ Multiply like normal fractions

\frac{280}{3}

→ Convert into mixed fraction

93\frac{1}{3}

6 0
3 years ago
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