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4 years ago

How do you write 1,680 in a scientific notation

1 answer:

8 0

1,680 (one thousand six hundred eighty) is an even four-digits composite number following 1679 and preceding 1681. In scientific notation, it is written as 1.68 × 103.

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A four-day charity fundraiser received 53 donations on the first day, 49 donations on the second day, 43 donations on the third

BaLLatris [955]

Answer:

mean = 52

Step-by-step explanation:

Just add all four together and divide by 4. That's the mean.

Sum (49 + 43 + 53 + 63) = 208

Mean = 208 /4 = 52

7 0

3 years ago

Line p is parallel to line q. if the measure of angle 3 is 54°, what is the measure of angle 6

Free_Kalibri [48]

Answer:

$m\angle 6=54^o$

Step-by-step explanation:

The complete question in the attached figure

we know that

When two lines are crossed by another line (transversal), a pair of angles on the inner side of each of those two lines but on opposite sides of the transversal, are called Alternate Interior Angles.

When the two lines being crossed are Parallel Lines the Alternate Interior Angles are congruent

In this problem

$m\angle 6=m\angle 3$ ---> by alternate interior angles

we have

$m\angle 3=54^o$

therefore

$m\angle 6=54^o$

7 0

3 years ago

Water is steadily dripping from a faucet into a bowl. You want to write an equation that represents the number of milliliters y

pav-90 [236]

9514 1404 393

Answer:

k = 16
y = 16x

Step-by-step explanation:

y is proportional to x when it satisfies the equation ...

y = kx

where k is the constant of proportionality. The equation can be solved for k by dividing by x:

k = y/x

The value of k for the given relation is ...

k = (320 mL)/(20 s)

k = 16 mL/s . . . the constant of proportionality

Then the equation is ...

y = 16x

7 0

4 years ago

A scientist has a sample of the radioactive isotope bismuth-212. The isotope decays exponentially as shown in the table. Time (s

luda_lava [24]

Answer:

f(x) = 30 • 0.989x

Step-by-step explanation:

Given the data :

10 26.8

20 23.9

30 21.3

40 19

50 16.9

60 15.1

Using technology, the exponential model equation obtained by plotting the data is :

y = 30.068(0.989)^x

Based on the general exponential formula :

y = ab^x

y = predicted value

Initial value, a = 30.068

Rate = b = 0.989

The most appropriate model equation from the options given is :

f(x) = 30 • 0.989^x

7 0

3 years ago

Alfonso graphs the inequality x greater-than negative 8 using the steps below.

Musya8 [376]

Answer:

B-The graph is incorrect. He should have shaded to the right of –8.

Step-by-step explanation:

We examine the steps Alfonso follows in graphing the inequality x > -8.

Step 1: Draw a number line, and place an open circle at –8.

A number line going from negative 13 to negative 3. An open circle is at negative 8.

The first step is correct, since we use an open circle for > or < and a closed circle for $\leq \:or\: \geq$ .

Step 2: Shade to the left of –8 to represent the infinite solutions to x greater-than negative 8.

This step is incorrect since values to the left are always less than.

He should have shaded to the right of -8.

The error made is Option B.

CHECK:

x=-7

-7>-8 (TRUE)

7 0

3 years ago

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