3 years ago

(3y^2+4y+4)-(7y^2+3y-6)

Mathematics

1 answer:

e-lub [12.9K]3 years ago

3 0

plz mark brainliest if it helps

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At an elevation of 1221.4 feet, Lake Mead will hold 28,945,000 acre-feet of water. Which number is the best estimate of this amo

uranmaximum [27]

Answer:

$3 \times 10^{7}$

Step-by-step explanation:

At an elevation of 1221.4 feet, Lake Mead will hold 28,945,000 acre-feet of water.

So, the amount of water that is in the lake will be 28,945,000 acre-feet which is estimated to be 30000000 acre-feet of water.

Therefore, the number $3 \times 10^{7}$ is the best estimate of this amount of water. (Answer)

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3 years ago

Find the equation of the line that is perpendicular to line

olganol [36]

Answer:

5x +6y -90 = 0

Step-by-step explanation:

The perpendicular line will have the x- and y-coefficients swapped, and one of them negated. The constant will be chosen so the equation is satisfied at the given point.

5x +6y = 5(6) +6(10) = 90

The equation of the perpendicular line in general form is ...

5x +6y -90 = 0

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2 years ago

Find the equation of a line with slope −2 that passes through the point (−1, 6).

Gnesinka [82]

Answer:

y = -2x + 4

Step-by-step explanation:

y = mx + b

(plug in slope)

y = -2x + b

(plug in point they provide)

6 = -2(-1) + b

6 = 2 + b

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3 years ago

How much would $200 invested at 5% interest compounded monthly be worth after 9 years? Round your answer to the nearest cent.

Allisa [31]

$A = P(1 + \frac{r}{n})^{nt}$
$A = 200(1 + \frac{0.05}{12})^{(12)(9)}$
$A = 200(1 + \frac{1}{240})^{108}$
$A = 200(1\frac{1}{240})^{108}$
$A = 200(1.56684664942)$
$A = 313.369329884$
$A = \$313.37$

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3 years ago

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Answer:

30 or 1/30

Step-by-step explanation:

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3 years ago