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3 years ago

Whatssssssssss uppppppppppppppp

Mathematics

2 answers:

Alex787 [66]3 years ago

7 0

Answer:

как работать с ю так 87

Step-by-step explanation:

156

forsale [732]3 years ago

4 0

Answer:

theyskyyy

Step-by-step explanation:

hehhehehehehehehhheheheheh

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In AHIJ, the measure of ZJ=90°, IJ = 3.2 feet, and JH = 9.6 feet. Find the measure of

Dmitriy789 [7]

Answer:18.4

Step-by-step explanation:

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3 years ago

Order each set of values from least to greatest

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0.4 least 38% is next then 5/8 is the greatest

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3 years ago

How much of the circle is shaded? Write your answer as a fraction in simplest form. 1/3 and 1/7

Ludmilka [50]

Answer:

11/21

Step-by-step explanation:

1/3=7/21

1/7=3/21

(7+3)/21=10/21

21/21-10/21=11/21

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3 years ago

60 + 60 × 0 + 1 = Solve this

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61 because you always multiply first 60 x 0= 0 so now we have 60+1 which is 61

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3 years ago

Read 2 more answers

What is the sum of 20x^2-10x-30

ivann1987 [24]

Answer:

The sum of the roots is 0.5

Step-by-step explanation:

The correct question is

What is the sum of the roots of 20x^2-10x-30

we know that

In a quadratic equation of the form

$ax^{2} +bx+c=0$

The sum of the roots is equal to

$-\frac{b} {a}$

in this problem we have

$20x^{2} -10x-30=0$

$a=20\\b=-10\\c=-30$

substitute

$-\frac{(-10)} {20}=0.5$

Verify

Find the roots of the quadratic equation

The formula to solve a quadratic equation is equal to

$x=\frac{-b\pm\sqrt{b^{2}-4ac}} {2a}$

$a=20\\b=-10\\c=-30$

substitute

$x=\frac{-(-10)\pm\sqrt{-10^{2}-4(20)(-30)}} {2(20)}$

$x=\frac{10\pm\sqrt{2,500}} {40}$

$x=\frac{10\pm50} {40}$

$x=\frac{10+50} {40}=1.5$

$x=\frac{10-50} {40}=-1$

The roots are x=-1 and x=1.5

The sum of the roots are

$-1+1.5=0.5$ ----> is ok

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3 years ago