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3 years ago

Find the value of x of the nearest tenth

Mathematics

1 answer:

max2010maxim [7]3 years ago

4 0

Answer:

Step-by-step explanation:

It is unknow. This is because x can be any number.

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Find the equation for the line of best fit using the two points that are close to the line of best fit (2,70) and (4.5, 90)

kari74 [83]

Given:

Two points that are close to the line of best fit are (2,70) and (4.5, 90).

To find:

Th equation of best fit line using the given two points.

Solution:

We know that, if a line passes through the two points, then the equation of line is

$y-y_1=\dfrac{y_2-y_1}{x_2-x_1}(x-x_1)$

Two points (2,70) and (4.5, 90) are close to the best fit line.

Consider the two points (2,70) and (4.5, 90). So, the equation of line is

$y-70=\dfrac{90-70}{4.5-2}(x-2)$

$y-70=\dfrac{20}{2.5}(x-2)$

$y-70=8(x-2)$

$y-70=8x-16$

Adding 70 on both sides, we get

$y=8x-16+70$

$y=8x+54$

Therefore, the equation of best fit line is $y=8x+54$ .

3 0

3 years ago

Suppose you flip a coin and roll a number cube. What is the probability of having tails come up on the coin and an even number o

aev [14]

Assuming a fair coin and a fair 6-sided die.

Coin has 2 sides with equal probability, 50% each.

Die has 6 sides with equal probability, 1/6 odds for each side.

Odds of heads = 1/2.

Odds of die rolling 5 or greater (5 or 6) = 2/6.

The probability of both things happening is the multiplication of the probability of the two happening separately, or (1/2)*(2/6) =<span> 1/6.</span>

5 0

3 years ago

Read 2 more answers

Change into decimal: 35%

kakasveta [241]

Answer:

$0.35$

Step-by-step explanation:

Convert the percentage to a fraction by placing the expression over 100 Percentage means 'out of 100 '.

$\frac{35}{100}$

Cancel the common factor of 35 and 100 .

$\frac{7}{20}$

Convert the fraction to a decimal by dividing the numerator by the denominator.

$0.35$

5 0

3 years ago

Read 2 more answers

The following table shows the bonus earned by Elton for selling different numbers of CDs:

UNO [17]

28 of the missing number I would assume that because all the right side number are going up by 3 while all the left side are by 4 so 24+4=28

3 0

3 years ago

Which polynomial represents a perfect square polynomial. Select all that apply

Hunter-Best [27]

ANSWER

${x}^{2} - 2x + 1$

and

${x}^{2} + 2x + 1$

EXPLANATION

A perfect square trinomial can be written in the form:

$(a - b) ^{2} = {a}^{2} - 2(ab) + {b}^{2}$

$(a + b) ^{2} = {a}^{2} + 2(ab) + {b}^{2}$

For the first option;

$(x + 1) ^{2} = {x}^{2} + 2(x)(1)) + {1}^{2}$

This is a perfect square trinomial.

For the second option,

$(x - 1)^{2} = {x}^{2} - 2(x)(1)) + {1}^{2}$

This is also a perfect square trinomial.

The third option

$4 {x}^{2} + 12x + 16$

This cannot be written as a perfect square.

$4 {x}^{2} - 12x - 9$

This cannot also be written as a perfect square.

6 0

4 years ago