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lisabon 2012 [21]
3 years ago
10

1. Find the value of each expression. Show your work.

Mathematics
2 answers:
Mashcka [7]3 years ago
7 0
Are the decimal points supposed to be multiplication symbols?
kolezko [41]3 years ago
4 0

Answer: A) 1.44 B) 13 C) 3

Step-by-step explanation:

A) 1.2 * 1.2 =1.44

B) (8) +17 - (12)= (8+17) -12= (25)- (12)= 13

C) (9*9) / (3*3*3)= (81) / (27)= 3

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Pliz solve this question​
kotegsom [21]

Answer:

  • i) (-3,0)
  • ii) (0,5)

Step-by-step explanation:

<u>Coordinates of points</u>

i) lies on x- axis with abscissa - 3

  • If it lies on x- axis, it has zero y-coordinate
  • It is (-3, 0)

ii)  lies on y-axis with ordinate 5

  • It lies on y-axis, it has zero x-coordinate
  • It is (0, 5)
4 0
3 years ago
In a class, 42 students, there are 8 more boys than girls write and solve a system of 3 equations
zhenek [66]

Answer:

x = 17

Step-by-step explanation:

x + x + 8 = 42     because x = boys and x + 8 = girls

2x = 34      because 2x = 42 - 8

x = 17            



i hope this helps!  you don't need the 2x = 42 - 8 to be an equation      ;)

8 0
3 years ago
n HP laser printer is advertised to print text documents at a speed of 18 ppm (pages per minute). The manufacturer tells you tha
Dominik [7]

Answer:

0.321 is the probability that their mean printing speed of the sample is greater than 17.99 ppm.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 17.39 ppm

Standard Deviation, σ = 4.25 ppm

Sample size = 11

We are given that the distribution of printing speed is a bell shaped distribution that is a normal distribution.

Formula:  

z_{score} = \displaystyle\frac{x-\mu}{\frac{\sigma}{\sqrt{n}}}  

P(printing speed of the sample is greater than 17.99 ppm.)  

P(x > 17.99)  

P( x > 17.99) = P( z > \displaystyle\frac{17.99-17.39}{\frac{4.25}{\sqrt{11}}}) = P(z > 0.468229)\\\\P( z > 0.468229) = 1 - P(z < 0.468229)

Calculating the value from the standard normal table we have,

1 - 0.679 = 0321= 32.1\%\\P( x > 17.99) = 32.1\%

Thus, 0.321 is the probability that their mean printing speed of the sample is greater than 17.99 ppm.

8 0
3 years ago
What is the area of this rectangle in square yards?
Vikentia [17]
In the comment of the other answer, you said that the rectangle is 24 x 18 ft.

First, we have to find out how many square feet that is, and then we can convert it to square yards.

The area of a rectangle is the length multiplied by the width.

A = l x w
A = 24 x 18
A = 432 square feet

To find out how many square yards that is, we divide it by 3, because 1 yard is 3 feet.

432 ÷ 3 = 144

The area of a 24x18ft rectangle is 144 square yards.
7 0
3 years ago
A produce company sells crates filled with a mixture of apples and oranges during the holiday season to grocery stores. Each cra
lawyer [7]

Answer: B)a + o = 72 a = o + 8

Step-by-step explanation: hopes this helps:))

4 0
2 years ago
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