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3 years ago

Please help with these I am stuck

Mathematics

1 answer:

g100num [7]3 years ago

8 0

Answer:

31.) x = 3

32.) y = 49

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Which line is a linear model for the data?

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The bottom right.
The line best fit is usually the line that follows the trend of dots in the scatter plot. In the other 3, you can tell that there seems to be no trend between either the line or the dots.
The bottom right one has a line pretty much right through the middle of the scattered dots and follows the trend.

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3 years ago

Add 7 x 10−6 and 2.1 x 10−5.<br><br> 9.1 x 10−6<br> 2.8 x 10−6<br> 9.1 x 10−5<br> 2.8 x 10−5

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2 years ago

Two houses on the same side of the street have house numbers that are consecutive

DochEvi [55]

Answer: 28 and 30

Step-by-step explanation:

Let the house numbers on the street be represented by n and n+2 sine they are consecutive even integers. Therefore,

n + (n + 2) = 58

2n + 2 = 58

2n = 58 - 2

2n = 56

n = 56/2

n = 28

Therefore the second number will be:

= n + 2

= 28 + 2

= 30

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3 years ago

Consider a triangle ABC like the one below. Suppose that a = 31, b = 23, and c = 20. (The figure is not drawn to scale.) Solve t

krok68 [10]

The solution to the triangle is A = 92.0, B = 47.9 and C = 40.1

<h3>How to solve the triangle?</h3>

The figure is not given;

However, the question can still be solved without it

The given parameters are:

a = 31, b = 23, and c = 20

Calculate angle A using the following law of cosine

a² = b² + c² - 2bc * cos(A)

So, we have:

31² = 23² + 20² - 2 * 23 * 20 * cos(A)

Evaluate

961 = 929 - 920 * cos(A)

Subtract 929 from both sides

32 =- 920 * cos(A)

Divide both sides by -920

cos(A) = -0.0348

Take the arc cos of both sides

A = 92.0

Calculate angle B using the following law of sine

a/sin(A) = b/sin(B)

So, we have:

31/sin(92) = 23/sin(B)

This gives

31.0189 = 23/sin(B)

Rewrite as:

sin(B) =23/31.0189

Evaluate

sin(B) =0.7415

Take arc sin of both sides

B = 47.9

Calculate angle C using:

C = 180 - 92.0 - 47.9

Evaluate

C = 40.1

Hence, the solution to the triangle is A = 92.0, B = 47.9 and C = 40.1