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katovenus [111]
3 years ago
13

What are the zeros of the quadratic function f(x) = 8x2 – 16x – 15?

Mathematics
2 answers:
notka56 [123]3 years ago
6 0
The best way to do this is to use the quadratic formula.  a=8, b=-16, and c=-15.  When you fill all that into the quadratic formula you get roots of x = 2.695582496 and x = -.6955824958.  I'm not sure what your choice above are supposed to be...
BaLLatris [955]3 years ago
5 0
The Answer Is A.

What are the zeros of the quadratic function f(x) = 8x2 – 16x – 15?

<span>x = –1 –  and x = –1 + </span><span>x = –1 –  and x = –1 + </span><span>x = 1 –  and x = 1 + </span><span>x = 1 –  and x = <span>1 + </span></span>
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Can somebody help me with these 2 questions and show work ?? :)
777dan777 [17]

5. A. (4, -2)

6. C. (x, y) — (x, -y + 5)

Step-by-step explanation:

5. For the formula y = x, the x and y coordinates get swapped.

M = (-2, 4) — M’ = (4, -2)

6. If the coordinates get reflected across the x-axis, the y coordinates become negative.

(x, y) — (x, -y)

Now that the coordinates are reflected, you go 5 units up (+ 5) to get to the reflection of the coordinates if it was 5 units down before it reflected across the x-axis (- 5).

Ex. 1, 6 gets reflected across the x-axis and moved 5 units up. It’s reflection would be equivalent to (1, -1) because it moved 5 units down (1, 1) then reflected across the x-axis (1, -1).

(x, y - 5) reflected across the x-axis is equivalent to (x, -y + 5)

8 0
4 years ago
Solve for x.<br><br> −(−2−5x)+(−2)=18<br><br> x=−90<br> x=90<br> x=185<br> x=−185
Tomtit [17]
Uhm, did you, maybe, type in the problem wrong? The answer to this equation is: 18/5 or 3.6, lol, no worries, though!
5 0
4 years ago
Read 2 more answers
Type the correct answer in each box. Use numerals instead of words.
stira [4]

The system of equations when been placed in a matrix yields

\left[\begin{array}{ccc}650&-1\\120&1\end{array}\right]\left[\begin{array}{ccc}x\\y\end{array}\right]  =\left[\begin{array}{ccc}-175\\25080\end{array}\right]

<h3>What is an equation?</h3>

An equation is an expression that shows the relationship between two or more variables and numbers.

Given the equation:

y = 650x + 175 and;

y = 25080 - 120x

Rearranging the equations gives:

650x - y = -175 and;

120x + y = 25080

Placing the equations in a matrix gives:

\left[\begin{array}{ccc}650&-1\\120&1\end{array}\right]\left[\begin{array}{ccc}x\\y\end{array}\right]  =\left[\begin{array}{ccc}-175\\25080\end{array}\right]

The system of equations when been placed in a matrix yields

\left[\begin{array}{ccc}650&-1\\120&1\end{array}\right]\left[\begin{array}{ccc}x\\y\end{array}\right]  =\left[\begin{array}{ccc}-175\\25080\end{array}\right]

Find out more on equation at: brainly.com/question/2972832

#SPJ1

6 0
2 years ago
Halle solved 664/48 below. She got a quotient of 13 with a remainder of 40. How could she solve 659/48 without redoing the work?
Lerok [7]
She should multiply the quotient by 48.
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4 years ago
Which Line has The Greater Slope<br> 1<br> 2<br> 3<br> 4
mote1985 [20]
The answer to this question is line 1
7 0
2 years ago
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