Light travels at a speed of 3.0 ´ 108 m/s. If it takes light from the sun 5.0 ´ 102 s to reach Earth, what is the distance between Earth and the sun?

Answers

Answer 1

Answer: (5.0 x 10²) x (3.0 x 10⁸) = 1.5 x 10¹¹ meters = 1.5 x 10⁸ km.

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In a lab experiment, the decay of a radioactive isotope is being observed. At the beginning of the first day of the experiment the mass of the substance was 800 grams and mass was decreasing by 13% per day. Determine the mass of the radioactive sample at the beginning of the 12th day of the experiment. Round to the nearest tenth (if necessary).

Answers

The answer is that the mass would be 310.7 on the 12th day

How do solve for 2m2 +2m-12=0
This if quadratic formula

Answers

$2m^2 +2m-12=0 \ /:2\n \nm^2+m-6=0\n \nm^2+3m-2m-6=0\n \nm(m+3)-2(m+3)=0\n \n(m+3)(m-2)=0\n \nm+3=0\ \ \ \vee\ \ \ m-2=0\n \n.\ \ \ \ m=-3\ \ \ \ \ \ \ \ \ \ \ \ m=2$

I went to the tire store in my total was $730.98 and I am scheduled to pay $27.96 a week how many weeks total will I be paying for the tires

Answers

We know that you bought tires for $730.98
You have to pay $27.96 a week to pay off what you bought.

Divide $730.98 by $27.96

You will pay off the $730.98 in 26 weeks.

Holly has 46 quart of potato salad. She gives 26 quart to a friend. How much potato salad does she have left? Explain.

Answers

Answer:

Holly has 20 quart of potato salad left.

Step-by-step explanation:

Holly has 20 quart of potato salad because she originally has 46 quart of potato but gave her friend 26, subtracting 26 from the original amount of quart of potato she had.

There were 3 times as many baby dinosaurs as adult dinosaurs. what does that mean?

Answers

It means , however, many dinos there are times it by 3 to get your answer for the baby dinos

Answer:

Times how ever many adult dinosaurse by 3 to get how ever many baby dinos there are

Step-by-step explanation:

If a polynomial P(x) has P(-2)=0, then which of the following can you conclude?P(x) has a factor (x+2)

P(x) has a constant term of -2

P(x) has an x-intercept of -2

Both P(x) has a factor (x+2) and P(x) has an x-intercept of -2

Answers

Answer: Both P(x) has a factor (x+2) and P(x) has an x-intercept of -2

Explanation: if a polynomial has a factor (x-a) it means its form can be written as:

(x-a)*(rest of polynomial)=0

and thus "a" is a root because the entire expression becomes 0 when x=a. In this case a=-2

An x-intercept is a point on the curve intersecting the x axis with coordinates (a, 0) where a is one of the roots. As shown above x=-2 will make the expression 0, so y=0 for x=-2. In other words there is a point (-2,0), which means -2 is the x-intercept.

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Which expression means 2 less than a number? A. 2 ÷ p B. p + 2 C. 2 × p D. p – 2

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