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lara [203]
3 years ago
10

Evaluate this expression for a = 2 and b = 3. (a+5)-(b/b-4)+2(b+3/a)

Mathematics
1 answer:
klasskru [66]3 years ago
4 0
((2)+5)−(b/b−4)+2∗(b+3/(2)) = <span>7</span>
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The length of a rectangle is seven less than twice the length of its width. If the area of the rectangle is 15 square meters, fi
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Answer:

Length is 3 meters and the Width is 5 meters

Step-by-step explanation:

L*W=15

L=2W-7

(2W-7)W=15

2W^{2} -7W=15\\2W^{2} -7W-15=0

(2W+3)(W-5)=0, don't use (2W+3)=0, because it gives you a negative dimension.

W=5, L=3

4 0
3 years ago
For a science experiment, Claudia observes the effects of temperature on a substance. The original temperature is 9°C, and Claud
aliya0001 [1]

Answer:

The drop in temperature is 42-(-54)=42+54=96℉. Rate of drop is 12℉. So it will take 96/12=8 hours.

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Step-by-step explanation:

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3 years ago
What is the perimeter of the circle with a missing sector of 40% and a radius of 3? 16.74 units 18.84 units 2.09 units d 22.74 u
Sergio039 [100]

Answer:

11.3097335 seems to have nothing with the question so the answer is

B) 18.8495559

Step-by-step explanation:

to find the perimeter (circumference?) do 2pi(r)

2 pi 3 = pi 6 = 18.8495559

since there is 40 percent missing, multiply the perimeter by 60% (part not missing)

18.8495559 * 60%

11.3097335

8 0
3 years ago
Find the original price. Discount is 30%. Sale price is $206.50
lakkis [162]
Your answer would be $295 :)
3 0
3 years ago
On a coordinate plane, an exponential function approaches y = 0 in quadrant 2 and curves up and increases in quadrant 1.
shepuryov [24]

Answer:

The domain of the function i.e. the value of x can be any real number and the range of the function is y > 0.

Step-by-step explanation:

On a coordinate plane, an exponential function approaches y = 0 in quadrant 2 and curves up and increases in quadrant 1.

Therefore, as x tends to - ∞, the y-value tends to 0 but not equal to zero and as x tends to +∞, the y-value also tends to +∞.

Hence, the domain of the function i.e. the value of x can be any real number and the range of the function is y > 0. (Answer)

7 0
3 years ago
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