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Murljashka [212]
3 years ago
10

Question 18

Mathematics
1 answer:
Viktor [21]3 years ago
3 0

Answer:

the answer is b

Step-by-step explanation:

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Please help numbers 28, 30, 32, 34
Juliette [100K]
<h3>28.</h3>

The path of any fair ball will divide the 90° angle between foul lines into complementary angles. The angle with the first-base foul line is ...

... 90° -27° = 63°

<h3>30.</h3>

The attached picture shows the two angles "constructed" using a protractor. It is not possible to construct a 97° angle with compass and straight-edge

<h3>32.</h3>

Let x represent the measure of the complement. Then the angle that is 6° less than the meaure of the complement is x-6°. The angle and its complement total 90°, so we have ...

... (x-6°) + (x) = 90°

... 2x - 6° = 90° . . . . . simplify

... 2x = 96° . . . . . . . . .add 6°

... x = 48° . . . . . . . . . . divide by 2

... (x-6°) = 48°-6° = 42°

The angles are 42° and 48°.

<h3>34.</h3>

Let x represent the measure of the angle. Then its supplement is 180°-x, and half that is (180°-x)/2. The angle is 3° more than this, so we have

... x = (180° -x)/2 +3°

... x -3° = (180° -x)/2 . . . . subtract 3°

... 2x -6° = 180° -x . . . . . .multiply by 2

... 3x -6° = 180° . . . . . . . .add x

... x - 2° = 60° . . . . . . . . . divide by 3 to get x by itself

... x = 62° . . . . . . . . . . . . add 2°

... The supplementary angle is 180° -62° = 118°, half of which is 59°.

One angle is 62°; half the measure of its supplement is 59°; it supplement is 118°.

5 0
4 years ago
What is called when two different units are being compared​
melisa1 [442]

Answer: A ratio compares two numbers or two quantities. The two numbers being compared are called terms. ... A rate is a special ratio that compares two quantities that have different units of measure. If the second term in a rate is 1, the ratio is called a unit rate.

Step-by-step explanation:

A ratio compares two numbers or two quantities. The two numbers being compared are called terms. ... A rate is a special ratio that compares two quantities that have different units of measure. If the second term in a rate is 1, the ratio is called a unit rate.

7 0
4 years ago
HELP FIND THE VALUE OF “x”
Inga [223]

Answer:

ok these are the same angles so they are equal so

4x-9=3x+29

+9

4x=3x+38

-3x

x=38

Hope This Helps!!!

8 0
3 years ago
Read 2 more answers
Is this the correct answer?
andreev551 [17]

Answer:

y = 3x + 5

General Formulas and Concepts:

<u>Algebra I</u>

Slope-Intercept Form: y = mx + b

  • m - slope
  • b - y-intercept

Step-by-step explanation:

<u>Step 1: Define variables</u>

Slope <em>m</em> = 3

y-intercept <em>b</em> = 5

<u>Step 2: Write linear equation</u>

y = 3x + 5

6 0
3 years ago
A sample of 12 measurements has a mean of 16.5, and a sample of 15 measurements has a mean of 18.6. Find the mean of all 27 meas
Wewaii [24]

Answer: 17.67

Step-by-step explanation:

Given

Sample  of 12 measurements has a mean of 16.5 and

a sample of 15 measurements has a mean of 18.6

Take \bar{x_1},n_1 be the mean and no of measurements

and \bar{x_2},n_2 be the mean and no of measurements in second case

\therefore \bar{x_1}=\dfrac{\sum a_1}{n_1}\\\\\Rightarrow \sum a_1=\bar{x_1}\times n_1\\\\\Rightarrow \sum a_1=198\quad \ldots(1)

Similarly,

\therefore \bar{x_2}=\dfrac{\sum a_2}{n_2}\\\\\Rightarrow \sum a_2=\bar{x_2}\times n_2\\\\\Rightarrow \sum a_2=279\quad \ldots(2)

Mean of 27 measurements

\Rightarrow \bar{x_3}=\dfrac{\sum a_1+\sum a_2}{n_1+n_2}\\\\\Rightarrow \bar{x_3}=\dfrac{198+279}{12+15}\\\\\Rightarrow \bar{x_3}=\dfrac{477}{27}\\\\\Rightarrow \bar{x_3}=17.67

4 0
3 years ago
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