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Arada [10]
3 years ago
9

5x+10y=5 -13x+4y=17 NEED HELP WILL MARK THE RIGH ANSWER BRAINLIEST

Mathematics
2 answers:
AleksAgata [21]3 years ago
7 0
System of Linear Equations entered :

[1] 5x + 10y = 5
[2] -13x + 4y=17


Solve by Substitution :

// Solve equation [2] for the variable y


[2] 4y = 13x + 17

[2] y = 13x/4 + 17/4
// Plug this in for variable y in equation [1]

[1] 5x + 10•(13x/4+17/4) = 5
[1] 75x/2 = -75/2
[1] 75x = -75
// Solve equation [1] for the variable x


[1] 75x = - 75

[1] x = - 1
// By now we know this much :

x = -1
y = 13x/4+17/4
// Use the x value to solve for y

y = (13/4)(-1)+17/4 = 1
Solution :
{x,y} = {-1,1}
Lady_Fox [76]3 years ago
3 0

Answer:

I think x = 1 and y = 1/2. For the second: x = -1 4/13 or -1.307692, y = 4 1/4 or 4.25

Step-by-step explanation:

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Which graph has the domain of x>-3? The less than sighn is supposed to have the line under. Will mark the brainliest
KIM [24]

Answer:

Top graph

Step-by-step explanation:

It starts at x and continues right, so x > -3 in that graph

4 0
3 years ago
Gerry plans to place a 29 foot ladder against the side of his house to clean his gutters. The bottom of the ladder will be 3 fee
tensa zangetsu [6.8K]

Answer:

8\sqrt{13}

Step-by-step explanation:

Using the pythagorean theorem (Assuming the house's walls are perpindicular to the ground):

a^2+b^2=c^2

we can find that 3=a and 29=c

3^2+b^2=29^2

9+b^2=841

b^2=832

b=\sqrt{832}

b=\sqrt{64*13}

b=8\sqrt{13}

That is the height that the ladder will reach

5 0
2 years ago
What are the answers​
LUCKY_DIMON [66]

Answer:

Step-by-step explanation:

line graph- the decrease of attendance

bar graph-the number of students who participate in different sports

line plot-the list of heights of a group of 80 adults

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7 0
3 years ago
A die is rolled once . what is the probability that the number on top will be _____​
Zepler [3.9K]

Answer:

I think the number on top will be 3

7 0
3 years ago
Read 2 more answers
13. Given the volume, V, of the rectangular prism below, find h, the height of the prism. V = (x ^ 2 + 2x)/(x + 1) l= 2x + 4 w=
NikAS [45]

Given:

Volume of a rectangular prism is:

V=\dfrac{x^2+2x}{x+1}

Dimensions of the rectangular prism are:

l=2x+4

w=\dfrac{x}{8}

To find:

The height of the rectangular prism.

Solution:

The volume of a rectangular prism is:

V=l\times w\times h

After substituting the values, we get

\dfrac{x^2+2x}{x+1}=(2x+4)\times \dfrac{x}{8}\times h

\dfrac{x(x+2)}{x+1}=\dfrac{2x(x+2)}{8}\times h

\dfrac{x(x+2)}{x+1}\times \dfrac{8}{2x(x+2)}=h

\dfrac{1}{x+1}\times \dfrac{8}{2}=h

\dfrac{4}{x+1}=h

Therefore, the correct option is C.

8 0
3 years ago
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