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3 years ago

What is next number and why

Mathematics

1 answer:

Elanso [62]3 years ago

4 0

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Write an expression for “the difference of 10 and x.”

sergij07 [2.7K]

Step-by-step explanation:

The expression for “the difference of 10 and x.”

can be given in two ways:

10 - x

x - 10

6 0

3 years ago

Find x the missing side length of the triangle

Scilla [17]

Answer:

16.6

Step-by-step explanation:

a = 14

b = 9

c = x

a² + b² = c²

14² + 9² = x²

196 + 81 = x²

x² = 277

$\sqrt{x^2} =\sqrt{277}$

x = 16.6

3 0

3 years ago

Explain whether the following statement is true or false.

levacccp [35]

Answer:

This statement is false. The side of a triangle that is opposite an angle greater than or equal to 90° is always the largest side of the triangle.

3 0

2 years ago

Which equation of the least squares regression line most closely matches the data set?

Rudiy27

Answer: y = 3.5 x+ 43.8

Step-by-step explanation:

Here x represents the number of years after 1990

Thus, we get the table that is used to find the equation will be,

x 0 2 4 6 8

y 45 51 57 61 75

Let the equation that shows the above data,

y = b + a x ---------(1)

$\text{Where, }a=\frac{\sum y \sum x^2-\sum x \sum xy}{n(\sum x^2)-(\sum x)^2}$

$\text{And, }b = \frac{\sum xy - \sum x\sum y}{n\sum x^2 - (\sum x)^2}$

By the above table,

$\sum x = 20$

$\sum xy = 1296$

$\sum x^2 = 120$

$\sum y = 289$

By substituting these values in the above value of a and b,

We get b = 43.8 and a = 3.5

Substitute this value in equation (1)

we get, the equation that shows the given data is,

y = 3.5 x + 43.8

⇒ Option (3) is correct.

4 0

3 years ago

Read 2 more answers

Sally wants to buy a cell phone. The price of the cell phone she had wanted had increased from $200 last week to $240 this week.

notsponge [240]

20%

200 divided by 5 equals 40

4 0

2 years ago