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Inessa05 [86]
3 years ago
8

Solve by elimination 4x+5y=15 6x-4y=11

Mathematics
1 answer:
lyudmila [28]3 years ago
8 0
X = 5/2 ,y = 1.I usually solve for x first then substitute the answer in one of the equations to find y.
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What linear function can be represented by the set of ordered pairs?
zzz [600]
<span>Solving for the slope using points ( (−4, 15), (0, 5)</span>  
M = ( 15 – 5) / ( -4 – 0) = -5 / 2  
Solving for b <span> 
Y = mx + b</span>   5 = 0(-5/2) + b
B = 5  
So the linear function is
<span>Y = (-5/2) x + 5</span>
8 0
2 years ago
Read 2 more answers
I need the answer please
Veseljchak [2.6K]
The trick to solving this problem is to know and remember that the sum of all the interior angles of a triangle is always 180 degrees.

Thus, (6x+1) + (5x-17) + (9x-24) = 180.

20x = -40, so x = -2 (answer)
7 0
3 years ago
From the diagram below, if the sides AD = 3 and DC = 27, and BD = X + 3, find x.
Colt1911 [192]

Given:

• AD = 3

,

• DC = 27

,

• BD = x + 3

Let's solve for x.

To solve for x, apply the altitude formula:

\frac{AD}{BD}=\frac{BD}{DC}

Where BD is the altitude.

Cross multiply:

BD^2=AD*DC

Plug in the values and solve for x:

\begin{gathered} (x+3)^2=3*27 \\  \\ (x+3)^2=81 \end{gathered}

Take the square root of both sides:

\begin{gathered} \sqrt{(x+3)^2}=\sqrt{81} \\  \\ x+3=9 \\  \\ \text{ Subtract 3 from both sides:} \\ x+3-3=9-3 \\  \\ x=6 \end{gathered}

Therefore, the value of x is 6 .

ANSWER:

d. 6

4 0
11 months ago
What is the product of 4.5 x 6.2 ?
NeX [460]
4.5 x 6.2 = 27.9


Hope that helps
4 0
2 years ago
Draw three rectangles that 2 cm long and 1 cm wide. On each rectangle show a different way to divide the rectangle in half. Then
andrew11 [14]
You can draw the 3 rectangles with these measurements then divide one horizontally one vertically and one slanted from one top corner to one bottom corner
5 0
2 years ago
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