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Alborosie
3 years ago
13

Solve the below: 4x+3y=7 3x-2y=9​

Mathematics
1 answer:
Ahat [919]3 years ago
7 0
4x+3y=7
3x-2y=9

12x+9y=21
12x-8y=36
^^Multiply top equation by 3 and multiply bottom equation by 4

12x+9y=36
- 12x-8y=36

17y=-15
^^Then subtract those two new equations

17y/17= -15/17

Y= -0.88
^^Next divide both sides by 17

4x+3* -0.88=7

4x + (-2.64) =7
-(-2.64) -(-2.64)

4x = 9.64

4x/4=9.64/4
X=2.41

^^then choose on equation and put your new y in the y spot and solve.


X=2.41

Y=-0.88

Your point/coordinate is (2.41,-.88)
You might be interested in
Please help m solve this it's about shaded areas. I need it fast. PLZ HELP THANK YOU IF YOU DO AND U R SO AMZING IF U DO>
sukhopar [10]

A = area of the circle

A = pi*r^2

A = pi*11^2

A = 121pi

-----

B = area of the rectangle

B = length*width

B = 6*4

B = 24

-----

C = blue shaded area

C = A - B

C = 121pi - 24 which is the exact area in terms of pi

C = 356.1327 is what you'd get if you used a calculator

C = 356.13 is the result after rounding to the nearest hundredth

<h3>The final answer is 356.13</h3>
5 0
4 years ago
Help pls!!!!! Thankssss
prisoha [69]
I think the answer is C
4 0
3 years ago
Read 2 more answers
Emma and Kyle combine their eamings to pay their
guapka [62]
<h2>Hello!</h2>

The answer is:

The second option,

b.) C(x)=40.60x+201

<h2>Why?</h2>

We are given the functions E(x) and K(x), since they both are function of the same variable, we need to add them in order to find the correct option.

From the statement we know the functions:

E(x)=22.75x+74

and

K(x)=17.85x+127

So, adding the functions we have:

C(x)=E(x)+F(x)

C(x)=(22.75x+74)+(17.85x+127)

C(x)=22.75x+17.85x+74+127

C(x)=40.60x+201

Hence, the answer is the second option,

b.) C(x)=40.60x+201

Have a nice day!

6 0
3 years ago
I bought my flat last year for £40,000. The value of my flat increased by 12% in September and then by a further 10%in January t
Leya [2.2K]
The answer is: <span>40,000(1.12)(1.10)

Or 4 more understanding: 12% of £40000
</span>1%= 400, therefore, 12%= 4800.
In January, the value was £44800. 
10% of this is £448.
Add £448 to £44800, giving you £45, 248
7 0
3 years ago
Whose method is correct?
boyakko [2]

Answer: Jaleel´s method is correct and the right option is option number D

Step-by-step explanation:

its because 2(x-2)

= 2x-4

note 2 is multiplied with both x and -2!

4 0
3 years ago
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