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4 years ago

Find the solution to the equation below. 2x^2+3x-20=0

Mathematics

2 answers:

icang [17]4 years ago

8 0

C maybe bro I’m not really sure tho think I’m messing up

Sphinxa [80]4 years ago

4 0

<h2>Answer:</h2>

The right choice is (D) x= -4, 5/2

<h2>Step-by-step explanation:</h2>

2x^2+3x-20=0

By factoring the expression we get

2x²2 +8x−5x−20=0

(x+4) (2x−5) = 0

Now

(x+4) = 0 OR x = -4

and

(2x-5) = 0 OR x = 5/2

S the solutions are

x= -4 and x = 5/2

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the total attendance at a concert in a theater hall was 1500, of this total 400 were children,850 were women , and the remaining

AleksandrR [38]

Answer:

Below!

Step-by step explanation:

We know that:

400 + 850 + m = 1500

Solution of Question A:

Percent of children: Total children/Total attendance

=> 400/1500
=> 4/15
=> 0.27 (Rounded to nearest hundredth)
=> 0.27 x 100
=> 27%

Hence, the percent of children is about 27%.

Solution of Question B:

Percent of women: Total women/Total attendance

=> 850/1500
=> 85/150
=> 17/30
=> 17/30 x 100
=> 17/3 x 10
=> 170/3
=> 56.67%

Hence, the percent of women is 56.67%.

Solution of Question C:

400 + 850 + m = 1500
=> 1250 + m = 1500
=> m = 1500 - 1250
=> m = 250

Percent of men: Total men/Total attendance

=> 250/1500
=> 1/6
=> 0.17 (Rounded to nearest hundredth)
=> 0.17 x 100
=> 17%

Hence, the percent of men is about 17%

Hoped this helped.

$BrainiacUser1357$

3 0

2 years ago

Can someone answer this pleaseee

vichka [17]

Answer:

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Step-by-step explanation:

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6 0

3 years ago

Please i need help asap

Mademuasel [1]

You would have to divide the categories over the budget. after you divide, you would end up with a decimal, so you to convert it into a percentage, you would simply multiply it by 100.

clothing: 6%
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8 0

3 years ago

Read 2 more answers

Write the equation of a linear function for which f=(-4)=0 and f=(0)=-2

densk [106]

Answer:

y = -0.5x - 2

Step-by-step explanation:

equation: f(x) = mx + b

f(-4) : -4m + b = 0 ...(1)

f(0): 0m + b = -2 b = -2 ... plug in (1)

-4m - 2 = 0

m = - 1/2 = - 0.5

linear equation: y = -0.5x - 2

6 0

3 years ago

Is this equation linear? 1/3x-2y=7 I NEED HELP ASAP please

OleMash [197]

In highest poer of placholder is 1 then it is linear

1/3x^1-2y^1=7
it is linear
yes it is

8 0

3 years ago