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mixer [17]
3 years ago
11

Which of the following are solutions to the quadratic equation below? x^2+7x-8=0

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

Answer:

x=1, −8

Step-by-step explanation:

Use the quadratic formula to find the solutions.

(−b±√b²−4(ac))/2a

Substitute the values a=1 , b=7, and c=−8 into the quadratic formula and solve for x.

(−7±√7²−4⋅(1⋅−8))/2⋅1

Simplify. x=(−7±9)/2

The final answer is the combination of both solutions. x=1,−8

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Answer:

85 dollars or to be exact $85.1

Step-by-step explanation:

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8 0
4 years ago
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Ann [662]

Answer:

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3 years ago
write the equation of the line that is parallel to the line y=-5/3x-2 and goes throught the point (-3,1)
max2010maxim [7]

Answer:

y = (-5/3)x - 4

Explanation:

The equation of a line with slope m that goes through the point (x1, y1) is:

y-y_1=m(x-x_1)_{}

Additionally, two lines are parallel if they have the same slope.

The slope of the line y = (-5/3)x - 2 is (-5/3) because it is the number beside x.

So, the slope of our line is also -5/3.

Therefore, replacing m by -5/3 and (x1, y1) by (-3, 1), we get that the equation of the line is:

\begin{gathered} y-1=-\frac{5}{3}(x-(-3)) \\ y-1=-\frac{5}{3}(x+3) \end{gathered}

Finally, solving for y, we get:

\begin{gathered} y-1=-\frac{5}{3}x-(\frac{5}{3}\cdot3) \\ y-1=-\frac{5}{3}x-5 \\ y=-\frac{5}{3}x-5+1 \\ y=-\frac{5}{3}x-4 \end{gathered}

So, the answer is:

y = (-5/3)x - 4

4 0
1 year ago
M(x) = -2x. Find m(5).<br>m(5) =​
Natasha_Volkova [10]

Answer:

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6 0
3 years ago
Which 1 weighs about 6 ounces a toothbrush or a paper clip?
bogdanovich [222]
A toothbrush weighs that much. a paperclip weighs less then an ounce, about 0.049 oz.

have a nice day
7 0
3 years ago
Read 2 more answers
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