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3 years ago

1. Which of the following is not an equation?

Mathematics

1 answer:

OlgaM077 [116]3 years ago

5 0

Answer:

2. is not an equation

Step-by-step explanation:

An equation always has an equal sign. An expression doesn't

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Suppose the point

horrorfan [7]

Co-ordinates of point B" are (-8,6)

Step-by-step explanation:

Question:

Suppose the point (2,8) is reflected across the −axis and then translated according to the rule (, ) → (, + 4). What are the coordinates of ′′? Show your work and explain.

Solution:

We are given the point B(2,8) and we need to find B".

The coordinates of B" will be:

a) The point B(2,8) is reflected across the −axis:

If a point is reflected across x-axis, then the co-ordinate of x-axis remains same, while co-ordinate of y-axis is changed into opposite value, i.e its sign is changed.

So, point B' will be (2,-8)

b) Now, point B' is translated according to the rule (, ) → (, + 4) so, co-ordinates of point B'' are:

So, y= -8 and x = 2

(-8,2+4)

(-8,6)

So, Co-ordinates of point B" are (-8,6)

Keywords: Translation

Learn more about Translation at:

#learnwithBrainly

8 0

3 years ago

Read 2 more answers

In a fraction with a denominator of 15, which value could the numerator be to produce a repeating decimal? A) 9 B) 11 C) 12 D) 1

Damm [24]

Out of the following choices, the value that could be the numerator to produce a repeating decimal is 12. The correct answer will be C .

4 0

3 years ago

Find the mean of the data summarized in the given frequency distribution . Compare the computed mean to the actual mean of 57.6

AlexFokin [52]

The mean of the frequency distribution is 52.6° F. The computed mean of 52.6° F is lesser than the actual mean of 57.6° F.

<h3>What is the mean of a distribution?</h3>

The mean of the distribution can be defined as the average value of the distribution, It can be expressed as the total sum of all the observed values divided by the frequency of the distribution.

From the parameters given:

Low-temperature Frequency

40 - 44 2

45 - 49 5

50 - 54 9

55 - 59 6

60 - 64 3

The first thing to do is to determine the class midpoint. The class midpoint is the sum of the class interval divided by 2.

The class midpoint of 40 - 44 is $\mathbf{\dfrac{40 + 44}{2} = 42}$

The class midpoint of 45 - 49 is $\mathbf{\dfrac{45 + 49}{2} = 47}$

The class midpoint of 50 - 54 is $\mathbf{\dfrac{50 + 54}{2} = 52}$

The class midpoint of 55 - 59 is $\mathbf{\dfrac{55 + 59}{2} = 57}$

The class midpoint of 60 - 64 is $\mathbf{\dfrac{60 + 64}{2} = 62}$

Now, the table can be represented as:

Low-temperature Frequency x

40 - 44 2 42

45 - 49 5 47

50 - 54 9 52

55 - 59 6 57

60 - 64 3 62

The mean can now be determined as follows:

$\mathbf{\bar x = \dfrac{\sum fx}{\sum f }}$

$\mathbf{\bar x = \dfrac{(2 \times 42)+ (5 \times 47) + ( 9\times 52) +(6\times 57) + (3 \times 62)}{2 + 5 + 9 + 6 + 3 }}$

$\mathbf{\bar x = \dfrac{1315}{25}}$

$\mathbf{\bar x = 52.6}$

Therefore, we can conclude that the mean of the frequency distribution is 52.6° F. The computed mean of 52.6° F. is lesser than the actual mean of 57.6° F

Learn more about the mean of frequency distribution here:

brainly.com/question/12269435

3 0

2 years ago

The area of a sail is 40 1/2 square feet. The base and the height of the sail are equal. What is the height of the sail (in feet

grin007 [14]

Both base and height of the sail is 40 1/2 feet.

A sail is triangular in shape. Finding the area of a triangle is multiplying its base and height and dividing the product by 2.

A = 1/2 bh

Area = 40 1/2 or 40.50 sq. ft
Since base and height are equal.
40.50 x 2 = 81
bh = 81
bh = 81 ÷ 2
b = 40 1/2 ft
h = 40 1/2 ft

3 0

3 years ago

Read 2 more answers

-3 1/2 - 2 1/3 explained

lakkis [162]

The answer is 5 5/6 simplified to the max.

rewrite the equation with separated parts

-3 1/2 - 2 1/3

-3 - 2 = -5

-1/2 - 1/3? u need to find the LEAST common denominator

-3/6 - 2/6 = -5/6

how did I get 6?

Rewriting input as fractions if necessary:
1/2, 1/3

For the denominators (2, 3) the least common multiple (LCM) is 6.

Therefore, the least common denominator (LCD) is 6.

Now lastly combine them total and its -5 - 5/6 = -5 5/6.

5 0

3 years ago

Read 2 more answers