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d1i1m1o1n [39]
3 years ago
11

Solve to find x and y in the diagram. HELP PLEASE!!!

Mathematics
2 answers:
Vlad1618 [11]3 years ago
7 0

Answer:

D. x=15, y=3

Step-by-step explanation:

We have been given a diagram. We are asked to find the value of x and y for given diagram.

We can see that 6x will be equal to 90 degrees as it is complementary to 90 degrees angle.

We can represent this information in an equation as:

6x=90

\frac{6x}{6}=\frac{90}{6}

x=15

We can also see that 4x+10y and 90 degree angle are alternate exterior angles, so their measure will be equal.

4x+10y=90

4(15)+10y=90

60+10y=90

60-60+10y=90-60

10y=30

\frac{10y}{10}=\frac{30}{10}

y=3

Therefore, option D is the correct choice.

Mashcka [7]3 years ago
3 0

6x = 90

  x = 90/6

  x = 15

4x + 10y = 90

4(15) + 10y = 90

60 + 10y  = 90

10y = 30

y = 3

Answer: Last option

x = 15, y = 3

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Q7.
VLD [36.1K]

Answer:

10

Step-by-step explanation:

Let c = sum of ages of all children.

mean age of all children = c/15 = 7

c = 15 * 7 = 105

The sum of the ages of all children is 105.

Let b = sum of ages of the 9 boys.

mean age of boys = b/9 = 5

b = 9 * 5 = 45

The sum of the ages of the boys is 45.

The sum of the ages of the girls is c - b.

c - b = 105 - 45 = 60

The number of girls is 15 - 9 = 6

mean age of girls = (sum of ages of the girls)/(number of girls) =

= 60/6 = 10

3 0
3 years ago
This problem has been solved!
rjkz [21]

Answer:

1. Precise

2.Both

3.Precise

5.Neither

Step-by-step explanation:

Accuracy is the closeness of a measured value to a standard value.

Precision is the closeness of two or more measurements to each other.

1.The norm is 45 sit-ups in a minute.The students did, 64, 69,65 and 67. Values are not accurate compared to standard value 45.

Values are precise

Answer--Precise

2. Average score is 89.5

  Scores are 89,93,91,87

  Values are precise i.e a difference of 2 from each score

  Values are accurate because the average score is 90 thus compared to      the known average score of 89.5 they are accurate.

Answer-Both

3. Yesterday temperature=89

   Tomorrow=88

    Next day=90

   Average =75

   Values are precise i.e. difference of ± 1°

   Values are not accurate compared to the average temperatures of 75 F

   Answer---Precise

5. The jar contained 568 pennies

   The 6 people guessed the numbers as

    735,209,390,300,1005, 689

  The values are not precise

  The values are not accurate

  Answer---Neither

5 0
3 years ago
The hypotenuse is 8 inches. The side opposite angle X is 7 inches. Angle X = ?
Alex73 [517]

Step-by-step explanation:

In the picture.

The answer is <em><u>X = 61°</u></em>

6 0
3 years ago
F(x) = 5x<br> G(x) = 3x + 5
Alja [10]

Answer:

f(g(x)) = 5(3x + 5) = 15x + 25

g(f(x)) = 3(5x) + 5 = 15x + 5

Step-by-step explanation:

Since you didn't say what you were trying to find, I'll give you a couple things you may have been trying to find.

f(g(x)) = 5(3x + 5) = 15x + 25

g(f(x)) = 3(5x) + 5 = 15x + 5

3 0
3 years ago
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