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3 years ago

Help me please what number represented by the shaded position

Mathematics

1 answer:

Pavlova-9 [17]3 years ago

6 0

Count the total number of squares.

There are 10 by 10 of them or:

$\sf 10\cdot 10=100$

So there are a total of 100 squares, now count the shaded squares.

$\sf 4\cdot 4=16$

There are 16 shaded squares out of 100, this is a fraction:

$\sf\dfrac{16}{100}=\boxed{\sf 0.16}$

So your answer is C.

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What is the area of the figure? 118 in 2 48 in 2 128 in 2 108 in 2

cricket20 [7]

The answer Is D! 108 In 2.

8 0

2 years ago

-12x + 18y = 21 (6x -9 = -9

Leokris [45]

Answer:

x = 0 , y = 7/6

Step-by-step explanation:

Solve the following system:

{18 y - 12 x = 21

6 x - 9 = -9

In the second equation, look to solve for x:

{18 y - 12 x = 21

6 x - 9 = -9

Add 9 to both sides:

{18 y - 12 x = 21

6 x = 0

Divide both sides by 6:

{18 y - 12 x = 21

x = 0

Substitute x = 0 into the first equation:

{18 y = 21

x = 0

In the first equation, look to solve for y:

{18 y = 21

x = 0

Divide both sides by 18:

{y = 7/6

x = 0

Collect results in alphabetical order:

Answer: {x = 0 , y = 7/6

4 0

3 years ago

Which of the following graphs of exponential functions corresponds to a geometric sequence with a first term of 4 and a ratio of

ser-zykov [4K]

Answer: graph E.

A geometric sequence can be written as:

$a_{n} = a_{1} \cdot r^{(n - 1)}$

where:

a₁ = first term = 4

r = ratio = 0.5

Substituting the numbers, we have:

$a_{n} = 4 \cdot (\frac{1}{2})^{n-1}$

or else

$f(x) = 4 \cdot (\frac{1}{2})^{x - 1}$

This is an exponential function with base less than 1. Therefore, we can exclude graph C (which depicts a linear function), and graphs A and D (which depict an exponential function with base greater than 1).

In order to choose between graph B and E, let's evaluate the function in two different points:

$f(1) = 4 \cdot (\frac{1}{2})^{1 - 1} = 4$