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In-s [12.5K]
3 years ago
15

Can you help me plssssssssssssss

Mathematics
2 answers:
blagie [28]3 years ago
6 0

Answer:

D my friend I hope this helps :)

Step-by-step explanation:

Leona [35]3 years ago
4 0
D is the correct answer mi friend
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Please help me solve question 5.) with the letters a) & b)
tatyana61 [14]

Answer:

Step-by-step explanation:

5.(a)

x²+6x-15=0

x=\frac{-6\pm\sqrt{36+4*15}}{2*1}\\x=\frac{-6\pm\sqrt{36+60} }{2}\\x=\frac{-6\pm\sqrt{96} }{2}\\x=\frac{-6\pm4\sqrt{6} }{2}\\x=-3\pm2\sqrt{6}

(b)

4x²-8x-1=0

x=\frac{8\pm\sqrt{64+4*4}}{2*4}\\x=\frac{8\pm\sqrt{80}}{8}\\x=\frac{8\pm 4\sqrt{5} }{8}\\x=\frac{2\pm\sqrt{5}}{2}

7 0
3 years ago
Solve (x^3-7x^2-7x+20)÷(x+4) using long division​
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Step-by-step explanation:

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3 years ago
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NISA [10]

Answer:

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Step-by-step explanation:

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4x-3y-23=0<br>2x-5y=36<br> solve this question as a simultaneous linear equation​
Evgesh-ka [11]

Answer:

x=1/2, y=-7

Step-by-step explanation:

4x-3y=23 (1)

2x-5y=36

4x-3y=23

(-2)*(2x-5y=36)

4x-3y=23

-4x+10y=-72 +

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y=-49/7

y=-7

(1)--> 4x-3*(-7)=23

4x+21=23

4x=23-21

4x=2

x=2/4

x=1/2

4 0
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