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forsale [732]
2 years ago
6

How do i simplify -9-8+(-8×-9)-15 ?​

Mathematics
2 answers:
azamat2 years ago
8 0
-9-8+(-8x-9)-15=-9-8+72-15
=-32+72=40
Anestetic [448]2 years ago
6 0

Answer:

40

Step-by-step explanation:

PEMDAS

Do what is in the parentheses first.

-8 * -9 = 72

-9 - 8 + (72) - 15

-9 - 8 - 15 = -32

-32 + 72 = 40

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Sara’s teacher gave her class 10 quizzes, each worth 30 marks. Sara’s marks on the test are given below.
leonid [27]

Answer:

The mean is 6.6

The median is 16

mode is 18

Step-by-step explanation:

I'm not sure if this is tight but yeah:)

4 0
3 years ago
PROBLEMS TO SOLVE
marta [7]

A graph for the data (time and distance) shown in the given table is plotted in the image attached below.

<h3>What is a graph?</h3>

A graph can be defined as a type of chart that's commonly used to graphically represent data on both the horizontal and vertical lines of a cartesian coordinate, which are the x-axis and y-axis.

<h3>What is a linear function?</h3>

A linear function can be defined as a type of function whose equation is graphically represented by a straight line on the cartesian coordinate.

This ultimately implies that, the data of a linear graph are directly proportional and as such as the value on the x-axis increases or decreases, the values on the y-axis also increases or decreases.

In this exercise, you're required to plot a graph for the data (time and distance) that are recorded for an object that is starting from rest.

By critically observing the graph (see attachment) which models the data in the given table, we can infer and logically deduce that the linear function is given by:

y = 67.814x

Read more on graphs here: brainly.com/question/25875680

#SPJ1

3 0
1 year ago
The denominator of a fraction is 10 more than its numerator.
Dennis_Churaev [7]

The right answer is Option C : 5

Step-by-step explanation:

Let,

The numerator of fraction = x

The denominator of a fraction is 10 more than its numerator.

\frac{x}{x+10}

When 1/3 is added to this fraction,

\frac{x}{x+10}+\frac{1}{3}

the resulting fraction’s denominator is three times the denominator of the original fraction its numerator is 15 less than its denominator

\frac{3(x+10)-15}{3(x+10)}

Therefore, it becomes

\frac{x}{x+10}+\frac{1}{3} = \frac{3(x+10)-15}{3(x+10)}

Taking LCM on left side

\frac{3x+(x+10)}{3(x+10)}=\frac{(3x+30)-15}{3(x+10)}\\\\\frac{3x+x+10}{3(x+10)}=\frac{3x+30-15}{x(x+10)}\\\\\frac{4x+10}{3(x+10)}=\frac{3x+15}{3(x+10)}

Multiplying both sides by 3(x+10)

3(x+10)*\frac{4x+10}{3(x+10)}=\frac{3x+15}{3(x+10)}*3(x+10)\\4x+10=3x+15\\4x-3x=15-10\\x=5

The numerator of original fraction is 5.

The right answer is Option C : 5

Keywords: fraction, addition

Learn more about fractions at:

  • brainly.com/question/11207748
  • brainly.com/question/11280112

#LearnwithBrainly

8 0
3 years ago
The equation X squared plus Y squared minus 2X plus 7Y +1 equals zero can be written as which of the following equations
ad-work [718]

For this case we must write in algebraic symbology the expression described above:

We have an equation, then:

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  • minus 2x plus 7y plus 1: -2x + 7y + 1
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We construct the equation:

x ^ 2 + y ^ 2-2x + 7y + 1 = 0

Answer:

x ^ 2 + y ^ 2-2x + 7y + 1 = 0

6 0
3 years ago
ME NEED HELP please......​please
Viktor [21]

Answer:

17. 2.75

18. 5.50

19. 8.24

Step-by-step explanation:

To find a tip, multiply the total by the percent as a decimal.

27.48*0.10 = 2.75

27.48 *0.20 = 5.50

27.48 = 8.24

6 0
2 years ago
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