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mixer [17]
3 years ago
11

Help i dont know how to do this type of questions​

Mathematics
2 answers:
Scrat [10]3 years ago
6 0

Answer:

x = 28°

y = 23°

Step-by-step explanation:

5y - 4 + 3y = 180

solve for y

8y = 184

y = 23

3y and 2x + 13 are equal

solve for x now that we know y is 23.

3(23) = 2x + 13

69 = 2x + 13

56 = 2x

28 = x

dmitriy555 [2]3 years ago
3 0

Answer:

y=23 x=28

Step-by-step explanation:

5y-4 + 3y =180⁰

8y-4=180

8y=184

y=23

3y=2x+13

69=2x+13

-13 -13

56=2x

28=x

Hope this is helpful. good luck

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Hatshy [7]
The answer is 168 seconds.
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4 years ago
What is the equation of a line that passes through the point (1, 8) and is perpendicular to the line whose equation is y=x/2+3 ?
Svet_ta [14]

<u>Answer</u>

y = -2x + 10


<u>Explanation</u>

The general equation for a straight line is y = mx + c where m and c are gradient and y-intercept respectively.

y=x/2+3 = y (1/2)x + 3

gradient = 1/2

Gradient of the line perpendicular to y=x/2+3 is;

m × 1/2 = -1

m = -2

Now we find the equation of a line passing through (1,8) and have a gradient of -2.

-2 = (y - 8)/(x - 1)

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3 years ago
Can somebody good at math help me with these please I would really appreciate it
balandron [24]

Answer:

1) The discount is $4.05

The sale price is $18.45

2) The discount is $10

The sale price is $30

3) The discount is $2.6

The sale price is $23.4

Step-by-step explanation:

1) What is the discount and sale price for a haircut that originally cost $22.50 with an 18% discount.

Actual Price= $22.50

Discount = 18%

Finding discount:

18\%\:of\:22.50\\=\frac{18}{100}\times 22.50\\=4.05

So, the discount is $4.05

Finding Sale Price

The sale price can be found by: Sale\;Price=Actual\:Price-Discount

Putting values and finding sale price:

Sale\:Price=22.50-4.05\\Sale\:Price=18.45

The sale price is $18.45

2) What is the discount and sale price for a sweatshirt that originally priced $40.00 with an 25% discount.

Actual Price= $40.00

Discount = 25%

Finding discount:

25\%\:of\:40.00\\=\frac{25}{100}\times 40.00\\=10

So, the discount is $10

Finding Sale Price

The sale price can be found by: Sale\;Price=Actual\:Price-Discount

Putting values and finding sale price:

Sale\:Price=40.00-10\\Sale\:Price=30

The sale price is $30

2) What is the discount and sale price for a large pizza that originally cost $26.00 with an 10% discount.

Actual Price= $26.00

Discount = 10%

Finding discount:

10\%\:of\:26.00\\=\frac{10}{100}\times 26.00\\=2.6

So, the discount is $2.6

Finding Sale Price

The sale price can be found by: Sale\;Price=Actual\:Price-Discount

Putting values and finding sale price:

Sale\:Price=26.00-2.6\\Sale\:Price=23.4

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tino4ka555 [31]

Answer:

There is a 44.73% probability that all symbols are different.

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A probability is the number of desired outcomes divided by the number of total outcomes.

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Each number can have 10 values.

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We cannot have repeated values.

So, for example, the first number can be any of the 10 digits. The second can be any of them, bar the first one. So 9 possible digits

The same logic for the letters, 26, then 25, then 24.

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