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3 years ago

Which situation can be represented by this equation? 2,500 + 40x = 7,300-60x

Mathematics

1 answer:

koban [17]3 years ago

4 0

Answer:

x= 48

Step-by-step explanation:

$2500+40x+60x=7300\\40x+60x=7300-2500\\100x=7300+2500\\100x=4800\\x=4800/100\\x=48$

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Help!!!!PLEASE & THANKS

kiruha [24]

x° = 25°

25° is the answer

7 0

3 years ago

The General Social Survey reported a sample where about 61% of US residents thought marijuana should be made legal. If we wanted

bazaltina [42]

Answer: we need to survey 2285 Americans.

Step-by-step explanation:

When population proportion (p) is known, then the formula to evaluate the sample size( minimum) is given by :-

$n=p(1-p)(\frac{z^*}{E})^2$ , where E = margin of error , z* = critical z-value.

Given: p= 0.61, E=0.02, Critical z value for 95% = 1.96

Required sample size: $n=(\frac{1.96}{0.02})^2(0.61)(1-0.61)$

$=(98)^2(0.61)(0.39)\\\\=9604(0.61)(0.39)\\\\\approx$$2285$

Hence, we need to survey 2285 Americans.

3 0

3 years ago

If you buy a car for $16,000 and pay 2.9% interest over 5 years, how much total money will you have paid for the car after the 5

Marrrta [24]

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3 0

3 years ago

Read 2 more answers

Compare the functions below:

rjkz [21]

$f(x)\to y_{max}=4\\\\g(x)=4\cos(2x-\pi)-2\to y_{max}=2\\\\h(x)=-(x-5)^2+3\to y_{max}=3$

Answer: a. f(x)

6 0

3 years ago

Read 2 more answers

To aid in sea navigation, Little Gull Island Lighthouse shines a light from a height of 91 feet above sea level with an unknown

algol13

Answer:

$\approx 6^\circ$

Step-by-step explanation:

Given that:

Little Gull Island Lighthouse shines a light from a height of 91 feet above the sea level.

The angle of depression is unknown.

Distance of the point at sea surface from the base of lighthouse is 865 ft.

This situation can be modeled or can be represented as the figure attached in the answer area.

The situation can be represented by a right angled $\triangle ABC$ in which we are given the base and the height of the triangle.

And we have to find the value of $\angle BAD \ or \ \angle C$ (Because they are the internal vertically opposite angles).

Using tangent ratio:

$tan\theta = \dfrac{Perpendicular}{Base}$

$tanC = \dfrac{AC}{BC}\\\Rightarrow tanC = \dfrac{91}{865}\\\Rightarrow tanC = 0.105\\\Rightarrow \angle C \approx 6^\circ$

Therefore, the angle of depression is: $\approx 6^\circ$

7 0

3 years ago