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3 years ago

How do i find BC? Khan Academy

Mathematics

1 answer:

Brrunno [24]3 years ago

6 0

Answer:

using cos=adjacent/hypotenuse

Step-by-step explanation:

in this case cos(60)=x/4√3

x=cos(60)*4√3

x=3.46

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Calculator

KengaRu [80]

Answer:

19.8 years old

Step-by-step explanation:

If Z=(x-μ)/σ where Z=-1.32, σ=3.2, and μ=24, then:

-1.32=(x-24)/3.2

-4.224=x-24

19.776=x

19.8

Therefore, the age of a concert attendee with a z-score of -1.32 is 19.8 years old.

4 0

3 years ago

Brian asked a group of people their favourite country . The results are summarised in the table. Destination UK Europe USA Afric

ziro4ka [17]

Answer:

I don’t really understand but here’s the table;

Step-by-step explanation:

UK = 48

Europe = 72

USA =72

Africa = 144

Other = 144

4 0

3 years ago

Read 2 more answers

Which function could be a stretch of the exponential decay function shown on the graph?

Ainat [17]

The function that could be a stretch of the exponential decay function shown on the graph is B. f(x) = One-half(6)x.

<h3>How to illustrate the function?</h3>

From the information given, it can be seen that function A is a monotonically increasing function.

Also, it can be seen that C and D don't pass through (0, 1).

Therefore, the function could be a stretch of the exponential decay function shown on the graph is B.

Learn more about functions on:

brainly.com/question/14136983

#SPJ1

7 0

2 years ago

solve systems of equation. equation number 1: 9 x squared + 4 y squared equals 144. equation 2: x squared plus y squared equals

grigory [225]

$9x^{2} + 4y^{2} =144$
$x^{2} + y^{2}=24$

$9x^{2} + 4y^{2} =144$
$4x^{2} + 4y^{2}=96$
by the difference
5 $x^{2}$ =48
so x= $\sqrt{\frac{48}{5}}$ or x=- $\sqrt{\frac{48}{5}}$
and $y^{2}$ =24- $\frac{48}{5}$
then y= $\sqrt{\frac{72}{5}}$ or - $\sqrt{\frac{48}{5}}$

5 0

4 years ago

Side length of x^2-10x+25

creativ13 [48]

Answer:

$(x - 5) {}^{2}$

8 0

3 years ago