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Orlov [11]
3 years ago
13

Rewrite 0.81 x 104 in scientific notation. x 10 HELP ME

Mathematics
2 answers:
aev [14]3 years ago
4 0
0.81 x 10^4
= 8.1 x 10^3
Rama09 [41]3 years ago
4 0

Answer:

Ok ill help i guess

Step-by-step explanation:

0.81 X 10000

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What is the perimeter of triangle ABC? Round each step to the nearest tenth. Please help me
Ad libitum [116K]

I would use the pythagorean theorem to find the lengths of each side. a² + b² = c².

Side AB is one we're looking for. If you make other right triangle with that same side you can see that one length is 4 and the other is 3. So, 4² + 3² = c² → 25 = c² → 5 = c. Side AB is length 5.

Side AC is another. Do the same with that side and you get that one length is 4 and the other is 3. (This is the same one as above) so side AC is length 5.

Side BC is the last one. One of the lengths is 1 and the other is 1 → 1² + 1² = c² → 2 = c² → 1.414213562 = c so side BC is approximately length 1.41.

Add each length up and you get a perimeter of roughly 11.4

8 0
3 years ago
Answer the questions about the following function.
balandron [24]

Answer:

Step-by-step explanation:

(a) The function ...

  f(x)=\dfrac{16x^{2}}{x^{4}+64}

can be evaluated for x=-2√2 to get ...

  \displaystylef(-2\sqrt{2})=\frac{16(-2\sqrt{2})^{2}}{(-2\sqrt{2})^4+64}=\frac{128}{64+64}=1

The point (-2√2, 1) is on the graph of f(x).

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(b) Likewise, we can evaluate for x=2:

  f(2)=\dfrac{16\cdot 2^2}{2^4+64}=\dfrac{64}{80}=0.8

The point on the graph is (2, 0.8).

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(c) From part (a), we know that f(-2√2) = 1. Since the function is even, this means that f(2√2) = 1. The graph is a maximum at those points, so there are no other values for which f(x) = 1.

The points (±2√2, 1) are on the graph.

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(d) There are no values of x for which f(x) is undefined. The domain is all real numbers.

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(e) The only x-intercept is at the origin, (0, 0). The x-axis is a horizontal asymptote.

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(f) The only y-intercept is at the origin, (0, 0).

8 0
3 years ago
Read 2 more answers
A large restaurant chain wanted to determine if its employees were taking sick days on some days of the week more than others. T
lidiya [134]

Answer:

0.2

Step-by-step explanation:

Given the data :

Day : Mon Tue Wed Thu Fri Sat Sun

# of sick days 22 11 16 17 21 28 25

The expected count of sick days taken on Saturday is obtained thus :

Expected count = (row total * column total) / overall total

Here, the table is just one way :

Hence, we use :

Observed value / total days

Hence,

Expected count on Saturday = sick days on Saturday / total sick days

Expected count on Saturday = 28 / (22+11+16+17+21+28+25)

Expected count on Saturday = 28 / 140

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7 0
2 years ago
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lesya [120]

Answer:

ACB = 85

Step-by-step explanation:

First find x:

10+ x + 60 = 120 - x

x + 70 = 120 - x

Add x to both sides

2x + 70 = 120

subtract 70 from 120

2x = 50

Divide 2 from both sides

x = 25

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Subtract 95 from 180

ACD = 85

5 0
3 years ago
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Note: This arc angle is over 2 π , meaning that it will more than wrap around the circle.
6 0
2 years ago
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