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gizmo_the_mogwai [7]
4 years ago
9

Soren solves the quadratic equation x^2 + 8x – 9 = 0 using the quadratic formula. In which step did Soren make an error?

Mathematics
1 answer:
pochemuha4 years ago
8 0

Answer:

step 3 didn't divide by 2

Step-by-step explanation:

in step

\frac{ - 8 +  \sqrt{100} }{2}  =  \frac{ - 8 + 10}{2}  = 1 \\  \frac{ - 8 -  \sqrt{100} }{2}  =  \frac{ - 8 - 10}{2}  =  - 9

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Solve the inequality
Pie

Answer:

- 0.6 \leqslant x  \leqslant 0.666 \: and \: x >   \sqrt[3]{7}

Step-by-step explanation:

The answer you are saying is correct if it was an equation

In inequalities the answer most of the times comes in ranges

The easiest way to find the range is by graphing the equation and finding the values of x for which the graph is above the x axis

There is a good graphing calculator app called desmos if u don't have one

5 0
3 years ago
Claire earns $8.50 per hour babysitting plus a $15 travel fee. Brooklyn earns $9.50 per hour walking dogs plus a $5 supply fee.
ANTONII [103]

Answer:

I believe Claire makes $24.50 and Brooklyn makes $14.50, so if you wanted to make Brooklyn walk an extra hour, she would have 24.00 adding the supply fee which is $5 which would make it $29.00.

Now i am going to try to actually solve it

8.50x15=127.5

9.50x5=47.5

9.50x13=123.5

this is so wrong i am so sorry, i just hope this helps you understand your question a bit more!

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
6-{-4+[3-(-8-5)+14]-7}
lapo4ka [179]
= 6 - {-4+[3-(-13) +14]-7}
= 6 - {-4+[3+13+14]-7}
= 6 - {-4+[30]-7}
=6- {19}
=-13
answer is minus thirteen
7 0
4 years ago
Which statement is correct about triangle 1 and 2? please help:)
Gekata [30.6K]
The answer to this is answer b I hope that helps
8 0
3 years ago
The sum of two integers is 10. Their difference is 4.<br> What are the two integers?
dalvyx [7]

answer = 7&3

step by step solution

let's take X and Y two intigers

X+Y=10

X-Y=4

adding both equation

X=7

Y=3

5 0
3 years ago
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