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Verdich [7]
3 years ago
13

PLEASE HELP I AM GIVING 15 POINTS INSTEAD OF FIVE FOR ANSWERING PLEASSSEEE HEEEEELLLP

Mathematics
1 answer:
mr_godi [17]3 years ago
5 0

Answer:

Third Choice:

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

Step-by-step explanation:

One line has

x + \dfrac{b}{2a} = \pm \dfrac{\sqrt{b^2 - 4ac}}{2a}

The next line's reason is that b/2a was subtracted from both sides.

The missing line is:

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

Then it simplifies to

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

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did i do my work correctly and is this square roots? i’m a 6th grader and started school a couple days ago i’m so confused and s
Artemon [7]
When your finding square roots all you need to do is find what same numbers multiply up to that number, you did the square root of 49 correctly but the square root of 34 is 5.83 and the square root of 45 is 6.70.

and the division does that say 13 divded by 7?
3 0
3 years ago
Which exponential function is represented by the table below?
Mars2501 [29]

Answer:

It should be C

Step-by-step explanation:

Substituting in a value of x,

4 * ( 1/2 )^x               4 * ( 1/2 )^x

= 4 * ( 1/2 )^ 2         = 4 * ( 1/2 )^ -2

= 4 * 1/4                  = 4 * 4

= 1                           = 16

C checks out, and all the other options don't equal to the values on the table.

7 0
3 years ago
Represent the following sentence as an algebraic expression, where "anumber" is the letter x. You do not need to simplify.2 is s
asambeis [7]

Given:

Consider the number as <em>x</em>.

The objective is to represent algebraic expression for, 2 is subtracted from the square of a number.

Explanation:

Since the number is given as <em>x</em>, the square of the number can be represented as,

\text{Square of the number= x}^2

Now, subtract 2 from the above expression,

=x^2-2

Hence, the required expression is x²-2.

6 0
1 year ago
EASY! WILL MARK BRAINEST!! What is f(3) for the function f(x)=7x+5
Debora [2.8K]

Answer:

26 is the answer

Step-by-step explanation:

6 0
4 years ago
Substitution to solve the linear system
STALIN [3.7K]

y=4x+2. eq1

y=5x. eq2

4x=2-y

x=(2-y) /4

substitute in equation 2

y=5(2-y) /2

y=(10-5y)/2

4y=10-5y

9y=10

y=10/9

substitute in equation 2 or 1

substituting in equation 2

10/9=5x

x=10/45

x=10/45 y=10/9

you can verify it also.

HOPE IT HELPS!!

5 0
4 years ago
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