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3 years ago

Simplify the expression. (3.48×103)×(9×104)+(9.9×108) Enter your answer in scientific notation in the box. ?

Mathematics

1 answer:

Alika [10]3 years ago

7 0

3.3656904 x 10^-5 ( or just to help you understand, 3.3656904 multiplied by 10 to the power of negative 5)

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What is the equation of a parabola with vertex (0,0) and focus (0,4)? Draw its graph on the grid

svp [43]

Focus of a parabola: $4p(y-k)=(x-h)^2$ where vertex (h,k) p is the distance from vertex to focus
$4*4(y-0)=(x-0)^2 \\ 16y=x^2 \\ y= \frac{1}{16}x^2$

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3 years ago

Match each concept with its key characteristic.

Crank

1. It is the subset of a group - Group sample.

2. It equally favors all members of a group sample - Random sample.

3. It collects data on members of a group - Survey.

4. It does not equally favor all members of a group - Biased sample.

5. It includes all members of a group - Population.

6. It analyzes data collected from a group - Mean.

I have matched all concepts in accordance with statistical use, hope it helps.

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3 years ago

wade has a test score of 77% on his first test and 65% on his second test. what must he score on a third test to have an average

zubka84 [21]

Answer:

faillll

Step-by-step explanation:

6 0

3 years ago

2. There is a 50% chance that Elaine will be late to school, a 40% chance that she will be late to

Verdich [7]

Answer:

50%

Step-by-step explanation:

Given that:

P(late) = P(L) = 50% = 0.5

P(Eat) = P(E) =?

P(LnE) = 40% = 0.4

P(LuE) = 60% = 0.6

P(LuE) = P(L) + P(E) - P(LnE)

0.6 = 0.5 + x - 0.4

0.6 = 0.1 + x

0.6 - 0.1 = x

0.5 = x

P(E) = 0.5

0.5 * 100% = 50%

8 0

3 years ago

27. The interest rate that doubles a sum in 10 years is a) 12% b) 11% c) 10% d) 9%

avanturin [10]

Answer:

Interest rate of 7%.

Step-by-step explanation:

The compound interest formula is given by:

$A(t) = P(1 + \frac{r}{n})^{nt}$

Where A(t) is the amount of money after t years, P is the principal(the initial sum of money), r is the interest rate(as a decimal value), n is the number of times that interest is compounded per year and t is the time in years for which the money is invested or borrowed.

In this question:

We want to find t for which $A(t) = 2P$ when $n = 1, t = 10$ . So