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aivan3 [116]
2 years ago
6

The triangles are similar.

Mathematics
1 answer:
son4ous [18]2 years ago
3 0

Answer:

x = 21

Step-by-step explanation:

Using ratios:

75 : 25 = x : 7

75/25 = x/7

3 = x/7

21 = x

Using Pythagoras' Theorem a² + b² = c², where a and b are the legs and c is the hypotenuse of a right triangle:

72^2+x^2=75^2

\implies x^2=75^2-72^2

\implies x=\sqrt{75^2-72^2}

\implies x=21

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5 0
3 years ago
3x^2+5x-28=0 solve this for me please
jok3333 [9.3K]

Answer:

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Step-by-step explanation:

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3 years ago
A survey of a group of seventh graders and a group of teachers at a local middle school asked how many siblings they each have.
mihalych1998 [28]

Answer:

1.5

Step-by-step explanation:

Attached to this answer is the diagram of the box plot described in the question, and the means from the plot are calculated thus;

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student 1      4

student 2     7

student 3     5

student 4     2

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Mean no. of siblings = (total number of siblings) ÷ (total number of students)

Note that number of students here are the once that had at least one sibling, others without siblings are not used in the calculation, hence 5 students (student-0 to student-4) make up total number of students, while the remaining 4 students (student-4 to student-9) are disregarded.

Therefore, mean = 20 ÷ 5 = 4 siblings.

6 0
3 years ago
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