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2 years ago

I need a lot of help with number 2

Mathematics

1 answer:

ira [324]2 years ago

3 0

Answer:

I. 168

Step-by-step explanation:

Break the shapes down and get the area of each of them individually then add them together

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Find the length of side AB Give answer to 3 significant figures

Rina8888 [55]

Answer:

AB = 8.857 cm

Step-by-step explanation:

Here, we are given a right angle $\triangle ABC$ in which we have the following things:

$\angle A = 90 ^\circ\\\angle C = 41 ^\circ\\\text{Side }BC = 13.5 cm$

Side BC is the hypotenuse here.

We have to find the side AB.

Trigonometric functions can be helpful to find the value of Side AB here.

Calculating $\angle B$ :

Sum of all the angles in $\triangle ABC$ is $180^\circ$ .

$\Rightarrow \angle A + \angle B + \angle C = 180^\circ\\\Rightarrow 90^\circ + \angle B + 41^\circ = 180^\circ\\\Rightarrow \angle B = 49^\circ$

We know that cosine of an angle is:

$cos \theta = \dfrac{\text{Base}}{\text{Hypotenuse}}\\\Rightarrow cos B = \dfrac{AB}{BC}\\\Rightarrow cos 49^\circ = \dfrac{AB}{13.5}\\\Rightarrow AB = 13.5 \times 0.656\\\Rightarrow AB = 8.857 cm$

So, side AB = 8.857 cm .

6 0

2 years ago

Which of the following is an example of the commutative property?

anyanavicka [17]

Answer:

a(b+c)= ab + ac

Step-by-step explanation:

6 0

2 years ago

Divide: 1213 ÷ 9 = A)

kolezko [41]

It’s A

1213 divided by 9 is equal to 134.777778

So it is 134 R7

But if it’s rounded to the nearest then it is C.

4 0

2 years ago

List all of the possible outcomes using the table below.

NemiM [27]

Answer:

The four possible outcomes are:

skirt 1, white
skirt 1, black
skirt 2, white
skirt 2, black

Step-by-step explanation:

Skirt 1 can be white or black (two outcomes). Skirt 2 can be white or black (two outcomes). Therefore, there are four possible outcomes.

6 0

2 years ago

Read 2 more answers

I needs hheeellllppppp

Step2247 [10]

Answer:

It's C.7

Step-by-step explanation:

Use the foil method

5 0

2 years ago