MATHEMATICS HIGH SCHOOL

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Calculate the product of 8/15, 6/5, and 1/3.

Answers

Answer 1
Answer: To find this answer, multiply the numerators across: (8 x 6 x 1) = 48, and the denominators in the same fashion: (15 x 5 x 3) = 225. This gives a non-reduced fraction of 48/225, which, when reduced by 3s, gives a product of 16/75.

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What is the anser5 to 5k-2k=12

Answers

3k=12
k=12/3
the final answer is k=4

Step-by-step explanation:

5k-2k=12

+2k +2k

7k=12

10. John is mixing paint.He uses black, green and blue in the ratio 6:3: 1. How much of black green and blue paint is needed to make a mixture of paint of 500ml.​

Answers

The given ratio becomes 6x : 3x : x.

6x = black paint

3x = green paint

x = blue paint

6x + 3x + x = 500

10x = 500

x = 500/10

x = 50

6x = 6(50) = 300

3x = 3(50) = 150

x = 50

Answer:

300 ml of the black paint.

150 ml of the green paint.

50 ml of the blue paint.

A cell phone company charges $40 per month for unlimited calling, and $0.20 per text message sent. If t represents the number of text messages Roxy sent last month, which expression represents the cost of her bill last month before any taxes or additional fees?

Answers

We know that 40$ is a constant and the number of texts sent (t) will change the price therefire we can plug it in the basic linear equation (p being the total price): p= 0.2t + 40

Answer:

40+0.2t

Step-by-step explanation:

Tara's player for cds the length of the cds are 45 minutes 52 minutes 38 minutes and 47 minutes if it takes her 2 minutes to change each cd how long will it take to play all four cds

Answers

To determine the amount of time she will need to play all the cd's, we add up the time in minutes.
                          45 minutes + 52 minutes + 38 minutes + 47 minutes
which is equal to 182 minutes. Then, Tara needs to shift from one cd to another for 3 times and this will take her a total of 6 minutes. Thus, the total number of minutes she will need in order to play all four cds is 188 minutes. 

2|x+8|=20
Plz show work

Answers

Answer: x=2, or x=-18

Step-by-step explanation:

Since anything in an absolute value can be positive or negative (since in an absolute value, everything has to be positive since absolute value measures distance and distance cannot be a negative), so |x+8| can become either (x+8) or [-(x+8)].

Our first equation: (after I've removed absolute value)

2(x+8)=20

2x+16=20

2x=4

x=2

And our second equation: (after I've removed absolute value):

-2(x+8)=20

-2x-16=20

-2x=36

x=-18

Y-4=3/5(x-10) standered form

Answers