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2 years ago

11

What is the wavelength in meters of the electromagnetic carrier wave transmitted by the Sport Fan radio station at a frequency o

f 640 Hz?
WORKING PLSSSSSSSSSSSSSSSSSS

1 answer:

tankabanditka [31]2 years ago

7 0

2.8m/9 that is what the answer is

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Find the area of abc. round your answer to the nearest tenth. b=87, a = 10.1, c = 9.8

Advocard [28]

The area of the triangle can be calculated through the equation,
A = sqrt ((s)(s - a)(s - b)(s - c))
where A is area, s is the semiperimeter ((a + b + c)/2), a, b, and c are the sides given above.

The presented equation above is the Heron's formula.

Substituting the known values,
s = (8.7 + 10.1 + 9.8) / 2
s = 14.3

A = sqrt ((14.3)(14.3 - 8.7)(14.3 - 10.1)(14.3 - 9.8))
<em>A = 38.9 units squared

</em>Thus, the answer to this item is not among the choices. <em>
</em>

8 0

3 years ago

What is the average (arithmetic mean) of the first 90 measurements in a certain list of 92 measurements? (1) the average of the

marishachu [46]

The sum of all the measurements is just the average times the number.

$\bar x = \frac{1}{n} \sum_{i=1}^n x_i$

$\sum_{i=1}^n x_i = n \bar x$

So if the average of all 92 is 7 the sum of those is $92 \times 7$

The average of the last two is 7.2 so their sum is $2 \times 7.2$

That means the sum of the first 90 is $92 \times 7 - 2 \times 7.2$

so the average of the first 90 is

$\dfrac{92 \times 7 - 2 \times 7.2}{90} = 6.99556$ cm

7 0

3 years ago

HELP ASAP , WILL GIVE MOST BRAINIEST

stepladder [879]

The pink is $y>2x +4$ and the purple is $x+y\leq 6$ . Have a great day!

4 0

2 years ago

Help me yall this for me aint it.

aleksandrvk [35]

Answer:

20(4 + 5)

Step-by-step explanation:

GCF is just the biggest number each value can be divided by. Here, it's 20, so that goes outside of the parenthesis. Now, what can you multiply by 20 to get 80? 4, so that goes in the second box. What can you multiply by 20 to get 100? 5, so that goes in the last box. You can check your answer by doing 80 + 100 = 180; 20(9) = 180.

6 0

3 years ago

Read 2 more answers

Graph the inequality.<br> y > |x-2| -5

Neporo4naja [7]

Here is the graph! I hope this helps!

3 0

2 years ago