3 years ago

What’s a random sample survey

Mathematics

1 answer:

Fudgin [204]3 years ago

4 0

Answer:

its a variety of selection techniques in which sample members are selected by chance

Step-by-step explanation:

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What is the percent of increase from 25 to 35?

katen-ka-za [31]

X - the percent increase

$25+25x=35 \ \ \ |-25 \\
25x=10 \ \ \ |\div 25 \\
x=\frac{10}{25} \\
\Downarrow \\
x=\frac{10}{25}=\frac{10 \times 4}{25 \times 4}=\frac{40}{100}=40\%$

The answer is C. 40% increase.

6 0

3 years ago

What is the area of triangle IHC?

madam [21]

Answer:

$28 cm^2$

Step-by-step explanation:

The formula for finding the area of a triangle is:

$\frac{1}{2} bh$

The "b," is the base (7), and the "h," is the height (8):

$\frac{1}{2} (7)(8)$

$\frac{1}{2} (56)$

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2 years ago

What fraction of the students are girls give your answer in its simplest form

dezoksy [38]

Answer:

45% of students are female or 15/32

Step-by-step explanation:

We find out their is 72 Boys and 60 Girls

We add both together to get 132 Students

Then we divide to get our number/fraction

60/132 = 15/32 or 45%

MARK AS BRAINLIEST

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3 years ago

Find the area of the composite figure.

BARSIC [14]

Answer:

The total area is 132 ft squared

Step-by-step explanation:

I found the area of the triangle by doing bh/2 and got 60. I then found the read of the rectangle bu doing bh and got 72z I then added both areas and got 132 as the total area.

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2 years ago

Read 2 more answers

Complete the solution of the equation. Find the value of y when x equals 4. -7x + y = -22

xz_007 [3.2K]

-7x + y = -22

-7*4 + y = -22

y = -22 + 28

y = 6

4 0

3 years ago