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3 years ago

Does anyone know this?

Mathematics

2 answers:

seropon [69]3 years ago

3 0

Answer:

-124

Step-by-step explanation:

The equation for a discriminant is:

$b^{2} -4ac$

So for

$7x^{2} -4x +5=0$

a = 7 b = - 4 c = 5

Plug values into the equation.

$(-4)^{2} -4(7)(5)$

16 - 140 = -124

IRISSAK [1]3 years ago

3 0

Answer:-124

Step-by-step explanation:

b^2 - 4ac

a = 7 b = -4 c = 5

-4^2 - 4*7*5

16 - 4*35

16 - 140

-124

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Firlakuza [10]

Answer:

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Step-by-step explanation:

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2 years ago

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Brainliest answer to whoever is right,<br> (6b - 4)(b - 8) = 0.<br> Solve for b

liubo4ka [24]

There are two answers.

b1 = 2/3

b2 = 8

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3 years ago

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What x-value makes the set of ratios equivalent? Tiles 2 : 3 = 6 : x ,4 : 7 = x : 42 , 2x : 48 = 3 : 12, 12 : 15 = x : 20

Naya [18.7K]

Step-by-step explanation:

2 : 3 = 6 : x ,

Ratio can be written as

$\frac{2}{3} = \frac{6}{x}$

2*3 = 6, we multiply top and bottom of fraction by 3

$\frac{2*3}{3*3} = \frac{6}{9}$

So value of x=9

4 : 7 = x : 42 ,

$\frac{4}{7} = \frac{x}{42}$

7*6 = 42, we multiply top and bottom of fraction by 6

$\frac{4*6}{7*6} = \frac{24}{42}$

So value of x=24

2x : 48 = 3 : 12,

$\frac{2x}{48} = \frac{3}{12}$

\frac{3}{12}[/tex] = $\frac{2x}{48}12*4 = 48, we multiply top and bottom of fraction by 4[tex]\frac{3*4}{12*4} = \frac{12}{48}$

2x= 12, so x= 6

12 : 15 = x : 20

$\frac{12}{15} = \frac{x}{20}$

$15 * \frac{4}{3} = 20$ ,

we multiply top and bottom by 4/3

$12 * \frac{4}{3} = 16$

So value of x=16

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3 years ago

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436+789+6543-34+368-23=<br><br><br> 15 points

dmitriy555 [2]

The answer is 8079. :)

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3 years ago

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Terri owns a computer repair shop. Her revenue at the end of last month was $8,000. What is Terri's Run Rate?

Ilia_Sergeevich [38]

Based on the information given Terri's Run Rate is $96,000.

Using this formula

Run rate=Revenue for the Period × Number of months in a year

Where:

Revenue for the Period =$8,000

Number of months in a year=12 months

Let plug in the formula

Run rate=$8,000×12 months

Run rate=$96,000

Inconclusion Terri's Run Rate is $96,000.

Learn more about run rate here:brainly.com/question/16134508

6 0

2 years ago