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Mnenie [13.5K]
3 years ago
6

A line passes through the point (4,7) and has a slope of -5/2.

Mathematics
2 answers:
Darina [25.2K]3 years ago
6 0

Hello there! :)

y-y1=m(x-x1)

y-(-7)=-5/2(x-4)

y+7=-\frac{5}{2} (x-4)

And that's our equation in point-slope form. Hope it helps!

~Just a felicitous teen

#HaveASplendidDay

SilentNature :)

pshichka [43]3 years ago
3 0

Answer:

y=-\frac{5}{2} x+17

Step-by-step explanation:

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Help pls!! I’m bad at geometry lol
zavuch27 [327]

Answer:

The perimeter of a shape is the length around it.

Step-by-step explanation:

We will be using the x and y values and add them together to find the total perimeter.

To do this, let's find all the values of the 2 axis:

(2 to 4) = 2

(1 to 3) = 2

(4 to 10) = 6

(3 to 1) = 2

(10 to 12) = 2

(1 to 8) = 7

(12 to 2) = 10

(8 to 1) = 7

We now add these values together which gives us <em><u>38</u></em>. Don't forget to add the units afterwards (cm, m and so forth).

3 0
3 years ago
Express 4/5 as a decimal using long division
Hoochie [10]

Here, we want to express the given fraction as a decimal by the use of long division

We start by writing the long division sign

We place 5 on the left hand side outside and place 4 inside the long division sign

Now, as we know, 4 cannot divide 5 wholly as it is less than 5

We simply add a 0 at the top of the long division symbol, with a decimal point after it.

Concurrently, we place a zero after 4

Hence we have 40 inside the long division

Then we can divide 40 by 5 to get 8

The 8 now comes after the decimal point

Hence, our answer is 0.8

Pictorally, we can have the representation as follows;

5 0
1 year ago
For a chemistry experiment Laura needs 300 ml of a 15% sulphuric acid solution. The Science Department has quantities of 5% acid
Len [333]

Answer:

100 ml of 5% solution

200 ml of  20% solution

Step-by-step explanation:

x = amount of 5% solution

y = amount of 20% solution

System of equations:

x + y = 300

.05x + .20y = 300(.15)

Solve by substitution:  let y = 300 - x

.05x + .2(300-x) = 300(.15)

.05x + 60 - .20x = 45

-.15x = -15

x = 100, therefore y = 200

7 0
3 years ago
Read 2 more answers
Find the value of x. A. 35 B. 40 C. 45 D. 50
geniusboy [140]

Answer:

D

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
A number is 40% more than another number. if the sum of the two numbers is 84, find the two numbers
Vinil7 [7]

If a number is 40% more than another number, we can say that the new number is equivalent to the sum of the old number and 40% of the old number. Let's try to represent this as an equation. First, let's convert the percentage to a fraction:

40 \% = \dfrac{40}{100} = \dfrac{2}{5}


Defining n as the new number and o as the old number, we can say:

n = o + \dfrac{2}{5} o


Also, we can say:

n + o = 84


To solve, let's substitute the first equation into the second equation for n and simplify.

(o + \dfrac{2}{5} o) + o = 84

  • Substitute

\dfrac{5o}{5} + \dfrac{2o}{5} + \dfrac{5o}{5} = 84

  • Get terms over common denominator

\dfrac{12o}{5} = 84

  • Simplify

12o = 420

  • Multiply both sides by 5

o = \dfrac{420}{12} = 35


We now have found the old number. Using the second equation we found near the beginning, let's find n.

n + 35 = 84

n = 84 - 35 = 49


The numbers are 35 and 49.

5 0
3 years ago
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