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Zanzabum
2 years ago
12

What is the length of BC?

Mathematics
1 answer:
Alekssandra [29.7K]2 years ago
6 0

Answer:

2.1

Step-by-step explanation:

This involves trigonometry. Since we need to find the value of a, we need to find a trig equation with a as the numerator. Luckily, we have one, tan. So, tan(20) is equal to a/6, right. So, using a calculator, tan(20) is approximately equal to 0.363. This times 6 should equal a. This is approximately around 2.1. Thus our answer is 2.1

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From the set {7, 15, 18), which of the values can be substituted for c to make the
Aneli [31]

Answer:

D. 15

Step-by-step explanation:

90 - 30 = 60

2 • 15 = 30

the answer is 15

8 0
3 years ago
A spherical tank has a radius of 6 yards. It is filled with a liquid the cost $7.15 per cubic yard.
mote1985 [20]
We have two questions, but we need to find the volume of the spherical tank first.
So the formula we will use to find the volume is:
(4/3)πr³=V
Let's fill in the information we have and solve. We will be using 3.14 for pi.
(4/3)(3.14)6³
(4/3)(3.14)(216)
4.1867×216
I'll be using the repeating decimal for 4.1867, I rounded to 7, but there is a repeating 6.
904.32
So the volume is 904.32 yards³ (or 904.78 if using the full pi)
We have to multiply the volume by 7.15.
904.32×7.15
6,465.89
It will cost $6,465.89 to fill the tank with the liquid.
3 0
3 years ago
Read 2 more answers
Triangle DEF, shown below, is reflected over the y-axis to form triangle D'E'F'. What are
vovikov84 [41]

Answer:

(-6, -4).

Step-by-step explanation:

When you reflect coordinates over the y-axis, the x-coordinates remain the same, but the y-coordinates become their additive inverse.

The original coordinates for F are (6, -4).

The new coordinates for F would be F' (-6, -4).

8 0
2 years ago
worth 11 points please help me
Vladimir [108]

Answer:

ki yu mi kyu mi arigato nya ichi ni san nya arigato

8 0
3 years ago
Plz help i will mark brainliest
Alexus [3.1K]
2,3,and4 is 72
1 and 5 is 36
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2 years ago
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