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Alex777 [14]
2 years ago
9

the intersection of roads m and n creates a 41.4 angle. what are the complementary and supplementary angles of this intersection

?
Mathematics
1 answer:
MaRussiya [10]2 years ago
7 0
The complementary angle of this intersection is 48.6
The supplementary angle of this intersection is 138.6
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If a varies directly as b, and a = 28 when b = 7, find b when a = 5.
Jlenok [28]

Answer:

Value of b = \frac{5}{4} =1.25.

Step-by-step explanation:

Direct Variation states that a relationship  between two variables in which one is a constant multiple of the other.

*if one variable changes the other changes in proportion to the first.

*If a is directly proportional to b i.e,  

a \propto b then it is of the form

a = kb     ;where k is constant variation.  

Given: a varies directly as b;

then, by definition of direct variation;

we have;

a = kb             .....[1]

Substitute the value of a =28 and b =7 to solve for k;

28 = k(7)

Divide both sides by 7 we have;

\frac{28}{7}=\frac{7k}{7}

Simplify:

k =4

now, find b using same method when a =5;

then;

after substituting the value of a = 5 and k=4 in [1] ;

5=(4)b

Divide by 4 to both sides we get;

b =\frac{5}{4}

Therefore, the value of b = \frac{5}{4} =1.25



4 0
2 years ago
Read 2 more answers
in his last soccer game, chris made 9 saves and let in 3 goals. what was his ratio of saves to total shots on gold
Verdich [7]
9/3 then simplify it will be 1/3
5 0
3 years ago
Community planners are planning to build a new community garden. They agree that the garden will be rectangular in shape, but th
skad [1K]

Answer:

2)

Step-by-step explanation:

To find the original width, multiply 15.8 by w, and by 5.2.

You'll get 327.65 = 15.8w + 82.16.

Next, do the opposite of the symbol from both sides, 327.65 - 82.16 = 15.8w + 82.16.

The constant is 82.16, and the symbol is +, the opposite of plus is -, and thus subtract the constant from both sides.

You'll get 245.49 = 15.8w.

Now do the opposite of the symbol (a number next to a variable is multiplication, so do division, and divide 15.8 on both sides.

245.49/15.8 = 15.8w/15.8, which equals 15.5373417722.

7 0
2 years ago
Read 2 more answers
_________ integers are natural numbers. 1.) some 2.) all 3.) no
Marina CMI [18]

Answer:

1.) Some

Step-by-step explanation:

Natural numbers do not contain negative numbers, but they do contain whole numbers like 1, 2, 3. So your answer would be some.

6 0
3 years ago
The standard deviation and the mean of 16 values are 15.6 and 20.5. What is the coefficient of variation ?​
EastWind [94]

Answer:

CV = coefficient of variation = 0.761

Step-by-step explanation:

The coefficient of variation is defined as the standard deviation divided by the mean of a population, which in this case,

standard deviation = 15.6

mean = 20.5

CV = coefficient of variation = 15.6/20.5 = 0.761

Note that if the 16 values form a sample (i.e. not the entire population), the above result is an estimate of the CV.

5 0
3 years ago
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