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3 years ago

The repeating decimal number 8.2151515... written as a fraction is

Mathematics

1 answer:

Blababa [14]3 years ago

4 0

Closest would be 8 43/200

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Describe the nature of the roots for the equation<br> 49x2– 28x +4 = 0

Zepler [3.9K]

Answer:

The roots of the equation is real and repeated

Step-by-step explanation:

Here, we want to describe the nature of the roots of the given quadratic equation

To get the nature of the roots, we find the discriminant of the equation

The discriminant is;

b^2 - 4ac

In this case, b = -28 , a = 49 and c = 4

The discriminant is thus;

-28^2 - 4(49)(4)

= 784 - 784 = 0

Since the discriminant is zero, this means that the quadratic equation has real roots which are the same

6 0

2 years ago

What is a equation in slope intercept form for the line that has a slope -1 that passes through (-4,3)

aleksley [76]

slope is -1

$m=-1$

we have a point as (-4,3)

we can use slope intercept form of line

$y=mx+b$

we can plug m=-1

$y=-x+b$

now, we can plug point (-4,3)

x=-4 and y=3 and then we can find b

$3=-1*-4+b$

$b=-1$

now, we can plug back

and we get

$y=-x-1$ ............Answer

5 0

3 years ago

Read 2 more answers

Martha is starting to save for a new laptop. She has been keeping track of her savings every day. The graph shows the number of

sammy [17]

Answer:

tell martha to buy huwei matebook x 2020 , its a good one

Step-by-step explanation:

5 0

2 years ago

The equation

ra1l [238]

<h2>Explanation:</h2>

Let's use a trial and improvement method to find this solution.

Step 1. Let's choose x = 8.5

Substituting into the equation:

$(8.5)^2+ 3(8.5) - 94=0? \\ \\ 72.25+25.5-94=0? \\ \\ 3.75\neq 0$

Step 2. Let's choose x = 8.4

Substituting into the equation:

$(8.4)^2+ 3(8.4) - 94=0? \\ \\ 70.56+25.2-94=0? \\ \\ 1.76\neq 0$

Step 3. Let's choose x = 8.3

Substituting into the equation:

$(8.3)^2+ 3(8.3) - 94=0? \\ \\ 68.89+24.9-94=0? \\ \\ -0.21\neq 0$

Since the sign of the equation changes from positive to negative when evaluating from 8.4 to 8.3, then x = 8.3 seems to be a reasonable value. Finally, the solution to 1 decimal place is:

$x=8.3$

6 0

3 years ago

Select the ratio equivalent to 8:2<br>A. 24:10 <br>B. 4:2<br>C.4:1<br>D. 32:12

Mama L [17]

Answer:

Step-by-step explanation:

If you divide 8:2 by two you get 4:1 which is the equivilant ratio.

Hope this helps.

4 0

2 years ago