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3 years ago

Please help me with this one I have been try to solve it for a while , thank you very much.

Mathematics

1 answer:

slega [8]3 years ago

6 0

Answer:

$\displaystyle y=\frac{tx-m-s}{r}$

<em>The only limitation is for r which must not be zero</em>

Step-by-step explanation:

<u>Solving Equations </u>

We need to perform some steps to isolate the required variable and solve the equation. It's commonly the application of algebraic operations contrary to the ones already present in the expression to work with

We have

$ry+s=tx-m$

And we need to solve for y

Let's add -s to both sides of the equation

$ry+s-s=tx-m-s$

Simplifying

$ry=tx-m-s$

Now we divide by r

$ry/r=(tx-m-s)/r$

Solving

$\displaystyle y=\frac{tx-m-s}{r}$

The only limitation is for r which must not be zero

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Serena is building a bookcase she cuts two pieces of wood from one board one piece is 1 7/8 feey long and another is 3.5 ft long

Vladimir79 [104]

Answer:

$\frac{43}{8}$ feet

Step-by-step explanation:

The total change is the sum of the length of two boards she cut.

First board length is 1 7/8th feet. Let's change to improper fraction:

1 7/8 = 15/8 feet

Second board lengrh is 3.5 feet, or 3 1/2 feet. Let's change to improper fraction:

3 1/2 = 7/2 feet

Let's add the two:

$\frac{15}{8}+\frac{7}{2}\\=\frac{15+28}{8}\\=\frac{43}{8}$

The change in original board is 43/8 feet

3 0

3 years ago

Plz help me I need because it’s one of my last assignments for school

Brums [2.3K]

Step-by-step explanation:

straight line = 180 degree

example

1) 2w - 24 + 2w - 40 = 180

4w = 180 + 24 + 40

4w = 244

w = 244/4

.......

2) 13n - 11 +(-9 + 12n)

13n - 11 -9 + 12n = 180

25n -20 = 180

25n = 180 + 20

25n = 200

n = 200/25

.........

8 0

3 years ago

Geometry :))), please help me

amm1812

Answer:

x = -5

Step-by-step explanation:

Since these two triangles are similar, the ratio between the corresponding lengths of each triangle will be the same.

This means the ratio between one side of each triangle (e.g. AD and DC) will be the same as the ratio between a different side of each triangle (e.g. BE and BC).

So, to create an equation for the sides which contain the unknown 'x', we must first find the ratio between the two sides by using a different set of sides.

On the right side we are given 9 for AD, and 18 for DC.

9/18 = 0.5

This means that the extra length of the larger triangle from the smaller one (AD) is half the length of the smaller triangle (DC). We can use this to make an equation for x:

If AD/DC = 0.5, then BE/EC will also = 0.5

BE = x+23

EC = x+41

Therefore:

$\frac{x+23}{x+41} = 0.5$