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maria [59]
3 years ago
13

"This summer, the water level of Lake Conroe changed by a rate of -1.5 feet per month. The water level at the beginning of May w

as 187 feet above sea level. What was the water level at the end of four months?" heelpppp asaapp
Mathematics
1 answer:
Verdich [7]3 years ago
8 0

Answer:

181 feets

Step-by-step explanation:

Given that:

Rate of change in water level = - 1.5 feets per month

Water level at beginning of May = 187 feets above sea level

Water level at the end of 4 months =?

Total change after four months = rate of change per month * number of months

= - 1.5 * 4 = - 6 feets

Hence water level after 4 months :

187 feets + (-6 feets)

187 feets - 6 feets

= 181 feets

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nika2105 [10]

ABC is a right triangle, so by Pythagoras' theorem,

AB^2+AC^2=BC^2\implies BC=\sqrt{4^2+9^2}=\sqrt{97}

Then by the law of sines,

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5 0
3 years ago
Please help with this question!!!!
Leni [432]

Answer: 24.63

Step-by-step explanation: To find the area of a circle you square the radius (by 2) and then multiply it by pie.

8 0
3 years ago
The roots of an equation are x=-1 plus or minus I the equation is x^2+ ?
Oxana [17]

Answer:

x^2+2x+2

Step-by-step explanation:

If the roots of the equation are -1\pm i, then by the zero product rule:

x=-1\pm i \\\\x+1\pm i=0 \\\\(x+1+i)(x+1-i)=0\\\\x^2+x-ix+x+1-i+ix+i+1=0 \\\\x^2+2x+2=0

You can confirm this with the quadratic equation:

x=\dfrac{-2\pm\sqrt{4-8}}{2}=\dfrac{-2\pm 4i}{2}=-1\pm i

Hope this helps!

8 0
3 years ago
Four times the sum of a number X and two is sixteen
brilliants [131]

Answer: x=14

Step-by-step explanation:

Subtract 2

from both sides of the equation.

X=16−2

Subtract 2

from 16

.

X=14

4 0
3 years ago
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Two combines can harvest 320 acres of wheat in a certain amount of time. Assuming all combines work at the same rate, how many a
hoa [83]
2 combines = 320 acres
320/2 = 160 acres per combine
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Answer: 960 acres

Hope this helps!
4 0
3 years ago
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