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AnnyKZ [126]
3 years ago
15

Solve the equation: 10y-7=27

Mathematics
1 answer:
mrs_skeptik [129]3 years ago
8 0

Answer:

10y=27+7

10y=34

y=34/10

y=3.4

Step-by-step explanation:

Firstly 7 is added to 27

Then adding 7 and 27

Dividing 34 by 10

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A store regularly sells t-shirts for $12. during a sale, the shirts are discounted by 15%. what is the price of a t-shirt during
Bumek [7]
$12*85%(the amount of the regular price that you pay)= <span>10.20 </span>
5 0
4 years ago
Find the equation of a line parallel to the line 2x-y-9=0 and passing through the point of intersection of the lines 5x+y+4=0 an
Cerrena [4.2K]

Answer:

y=2x-3

Step-by-step explanation:

1. Using the point of intersections, we use the substitution method to find the coordinates of the line parallel to 2x-y-9=0

5x+y+4=0

y= -4-5x

substituting the value of y in 2x+3y=1:

2x +3(-4-5x)=1\\\\2x-12-15x-1=0\\-13x=13x\\x= \frac{13}{-13}= -1

substituting x=-1 in y= -4-5x:

y= 1 (upon solving, you should get this)

(x,y)= (-1,1)

2. Using y=mx+c and making y the subject of the formula 2x-y-9=0 and using the coordinate we found earlier, we will find the equation of the parallel line. (We make y the subject of the formula to find the gradient)

2x-y-9=0\\2x-9=y\\y= 2x-9

y= mx+c\\

-1= 2 x 1 +c

-3=c

  • y= 2x-3

3 0
3 years ago
Solve for .<br> 3(A) +1 = 10
Gnesinka [82]

The answer would be A= 3 because, 3x3= 9 then you add 9+1 and get 10

Hope this helps

4 0
4 years ago
Please help I have another question with the same criteria
kondaur [170]
The answer is 7 because it’s 7
5 0
3 years ago
Read 2 more answers
For the​ following, indicate whether a confidence interval for a proportion or mean should be constructed to estimate the variab
noname [10]

Answer:

The confidence interval for a population mean proportion mean should be constructed because the variable of interest is time to complete the round, which is a quantitative variable.

Step-by-step explanation:

A researcher with a golf association obtained a random sample of 25 rounds of golf on a Saturday morning and recorded the time it took to complete the round.

Time is the number of hours, so it is mean, and not proportion.

Variable of interest is time to complete the round, and since it is measured in hours it is a quantitative variable.

The answer is:

The confidence interval for a population mean proportion mean should be constructed because the variable of interest is time to complete the round, which is a quantitative variable.

3 0
3 years ago
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