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Art [367]
3 years ago
10

3x^2+5x-28=0 solve this for me please

Mathematics
1 answer:
jok3333 [9.3K]3 years ago
8 0

Answer:

x= 7/3

x=-4

Step-by-step explanation:

Use the quadratic formula

a= 3, b=5, c=-28

-5± \sqrt{5^2-4*3(-28)}

x= _________________

              2.3

Simplfy

x=\frac{-5+19}{6} \\x=\frac{-5-19}{6}

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Elis [28]

Answer:

2.75

Step-by-step explanation:

The amplitude is half of the difference between the highest and lowest y-coordinates.

amplitude = 0.5|6.75 - 1.25| = 0.5(5.5) = 2.75

3 0
2 years ago
[3 - (4 + 32 * 8) ÷ 4] =
serg [7]
<span>[3 - (4 + 32 * 8) ÷ 4] 
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7 0
2 years ago
Area of a trapezium is 31.5cm. If the parallel sides are of lengths 7.3cm and 5.3cm. Calculate the perpendicular distance betwee
Anna11 [10]

Answer:

5cm

Step-by-step explanation:

Given area of trapezium = 31.5 sq. cm

Length of parallel sides = 7.3cm and 5.3cm

Formula to calculate area of trapezium is

1/2*(sum of parallel sides)*perpendicular distance between parallel sides

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substituting value of area given and sum of parallel sides we have

31.5 = 1/2* 12.6 * perpendicular distance between parallel sides

(31.5 * 2)/12.6 = perpendicular distance between parallel sides

perpendicular distance between parallel sides = 63/12.6 = 5

Therefore perpendicular distance between parallel sides for given trapezium is 5cm.

5 0
3 years ago
If you take a number, times by 7 then subtract 1. You get the same as if you took the number, times by 5 then subtract 8. What i
valentinak56 [21]

Answer:

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Step-by-step explanation:

6 0
3 years ago
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