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dem82 [27]
4 years ago
9

A) Find the value of 3x – 2 when x = 4b) Find the value of 5x + 6 when x = -2​

Mathematics
1 answer:
Svetradugi [14.3K]4 years ago
8 0

Answer: 10 and -4

Step-by-step explanation:

3x - 2 Plug in 4 for x

3(4) - 2 = 12 - 2 = 10

5x + 6. Plug in -2 for x

5(-2) + 6 = -10 + 6 = -4

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Solve using quadratic formula. 2x^2+6x+3=0
guapka [62]
x = \frac{-b +/-  \sqrt{b^{2} -4ac} }{2a}

a = 2
b = 6
c = 3

x = \frac{-6 +/- \sqrt{6^{2} -4*2*3} }{2*2}

x = 0.634 or x = -2.366
4 0
3 years ago
£48 in the ratio of 3:1
pentagon [3]
If you mean out of £48,

answer: £36:£12
5 0
3 years ago
Can you help please.?
jeka57 [31]

Answer:

2.33yd or 2 1/3yd

Step-by-step explanation:

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3 0
3 years ago
Find the area of the figure. Use 3.14 for 77.
Alecsey [184]

Answer:

C 70.26 in2

Step-by-step explanation:

6 = D

R = D/2

R = 3

A = 3.14 x 3 x 3

A = 3.14 x 9

A = 28.26

The area of the triangle is

A = 6 x 7

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So

42 + 28.26

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4 0
2 years ago
What is the point-slope form of a line that has a slope of 5 and passes through the point (3, –4)?
Afina-wow [57]
The generic form for this case is given by
 y = m (x-xo) + yo
 where
 xo: x coordinate
 me: y coordinate 
 Substituting the values we have
 y = 5 (x-3) - 4
 Therefore, the answer in this case is
 y – (–4) = 5(x – 3)
7 0
3 years ago
Read 2 more answers
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