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Licemer1 [7]
3 years ago
10

Which answer is the slope of of the line with equation 5x+y=15

Mathematics
1 answer:
devlian [24]3 years ago
4 0
This line is given to us in standard form, Ax+By=C, but it's easiest to see the slope when we convert to slope-intercept form y=mx+b, where m is the slope.

We are going to solve for y.

5x+y=15\\5x-5x+y=-5x+15\\y=-5x+15\\m=-5

The slope is the coefficient of the x-term, –5.
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What is the slope of the line that passes through the pair of joints?
Jet001 [13]
(5,7),(2,1)
slope = (1 - 7) / (2 - 5) = -6/-3 = 2 <==
7 0
3 years ago
the average of two numbers is 34 the first number is three times the second number what are the two numbers
tino4ka555 [31]
Hi there!

To solve this problem, we need to set up two equations and use the system of equations to solve.

Let x be the first number.
Let y be the second number.

(x + y) ÷ 2 = 34
x = 3y

Now, we can use substitution to solve.

(3y + y) ÷ 2 = 34
4y ÷ 2 = 34
2y = 34
y = 17

Now, we plug the value of y in the equation to solve for x.

x = 3*17
x = 51

Hope this helps!
7 0
3 years ago
Substiting into Expression. 18 +a a=4
Ratling [72]
18+a, a=4

18 + 4

22

Hope this help!
6 0
3 years ago
Read 2 more answers
Please help <br> .........................................................
Veseljchak [2.6K]

Step-by-step explanation:

Because vertical angles have equal measure, angle CPB = 90 degrees. By extension, angle CPQ + angle QPB = 90 degrees

So 2x+4x+12=90

6x+12=90

6x=78

x=13

6 0
2 years ago
You have made two of the exact same necklaces that cost you a total of $15 in supplies. You have chosen to mark up the price by
tatyana61 [14]

Answer:

A) The selling price for each necklaces is $8.625

B) The profit mark in each necklaces is 15%

Step-by-step explanation:

Given as :

The total cost of two necklaces = c.p = $15

The markup percentage for the necklaces = m = 15%

Let The selling price for both necklaces = s.p

A ) <u>Now, From markup method</u>

m% = \dfrac{s.p - c.p}{c.p}

or, 15% =  \dfrac{s.p - 15}{15}

or, 15% =  \dfrac{s.p}{15} - 1

or, \dfrac{s.p}{15} = 1 + 15%

or, \dfrac{s.p}{15} = 1 +  \dfrac{15}{100}

or, \dfrac{s.p}{15} =  \dfrac{100 + 15}{100}

or,  \dfrac{s.p}{15} =  \dfrac{115}{100}

∴ s.p = \frac{15\times 115}{100}

I.e s.p = $17.25

So, selling price of two necklaces = s.p = $17.25

or, selling price of one necklaces = s.p = \dfrac{17.25}{2} = $8.625

Hence, The selling price for each necklaces is $8.625

<u>Now, Again</u>

B) ∵ The total cost of two necklaces = c.p = $15

So, The cost price of one necklaces = \dfrac{15}{2} = $7.5

∴ profit% for each necklace =  \dfrac{s.p - c.p}{c.p}

i.e profit% for each necklace =  \dfrac{8.625 - 7.5}{7.5}

Or, profit% for each necklace =  \dfrac{1.125}{7.5}

Or, profit% for each necklace = 0.15

So, The profit make in each necklaces = 15%

Hence, The profit mark in each necklaces is 15%

Answer

8 0
3 years ago
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