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2 years ago

Pls help pefer if you can somewhat explain (Grade 11) (ASAP) (Urgent)

Mathematics

1 answer:

Vesna [10]2 years ago

8 0

Answer:

17) h=I(1-cosθ); 18) h=1.404.

Step-by-step explanation:

17) h=I-BC;

In ΔABC: m(∠C)=90°, m(∠B)=θ, AB=I, then BC=AB*cos(∠B); ⇒ BC=Icosθ;

Then h=I-Icosθ or h=I(1-cosθ).

18) if I=6 and θ=40°, then h=6(1-cos40°)≈6*(1-0.766)=1.404, where cos40°≈0.766.

For more details see the attachment.

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Suppose A = {2,5,7,9,13, 25, 26). (a) Find n(A). n(A) = (b) T/F: 7. A

charle [14.2K]

Answer:

a) n (A) = 7

Step-by-step explanation:

Here, set A = {2,5,7,9,13, 25, 26)

Noe, for any set A,

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3 years ago

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Answer:

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Step-by-step explanation:

Given:

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3 years ago

A survey showed that 4 out of 5 students own a bicycle. Based on this result, how many of the 800 students in a school own a bic

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Answer:

640 students own a bicycle

Step-by-step explanation:

The rate shows that 4 out of 5 students own a bicycle. 4 out of 5 is 80% of the students. Now, we need to find 80% of 800 students.

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3 years ago

Read 2 more answers

$10,000 at an annual rate of 7%, compounded semi-annually, for 2 years

forsale [732]

Answer:

$\$13,107.96$

Step-by-step explanation:

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$\text{New balanace}=10,000\text{ (old balance)}\cdot 1.07\cdot 1.07\cdot 1.07\cdot 1.07,\\\text{New balanace}=10,000\cdot 1.07^4=\boxed{\$13,107.96}$

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3 years ago

Please help me out if possible!

oksano4ka [1.4K]

Answer:

Step-by-step explanation:

Hi,

So lets answer this question;

Here we know that:

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⇒ z = 180° - 69°

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4 years ago

Pls help pefer if you can somewhat explain (Grade 11) (ASAP) (Urgent)​

Pls help pefer if you can somewhat explain (Grade 11) (ASAP) (Urgent)