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ryzh [129]
3 years ago
10

How do I solve these problems that I took a picture of ?

Mathematics
2 answers:
fgiga [73]3 years ago
6 0
22. Step by step: 2x^2+5x-3=0
factor the left side
(2x-1)(x+3)=0
set the factors to equal zero
2x-1=0 and x+3=0
x=1/2           x=-3

23. Use same technique.
3x^2-13x-10=0
factor the left side once more
(3x+2)(x-5)=0
set factors to zero
3x+2=0 and x-5=0
x=-2/3          x=5
Inessa05 [86]3 years ago
4 0
Her work is correct! :)
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What is the slope of the line passing through the points (-5, 7) and (-3, 5)? -1/4 -1 1
Gnesinka [82]
Slope form is y/x
to find this subtract -5, 7 by -3, 5 to get
-2, 2 and putting it in slope format....2/-2 which would be -1 or just -x (means -1x)
so far we've found out.....y = -x (+b)
b is what we need to find now so... plug in one of the coordinates
7=5+b (5 because --5 is positive 5)
b=2
so FINALLY the equation would be y = -x + 2

3 0
3 years ago
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Serhud [2]

Answer:

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Step-by-step explanation:

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Leona [35]

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Step-by-step explanation:

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2 years ago
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strojnjashka [21]

Answer:

<h2>A. a^14 divided by -4</h2>

Step-by-step explanation:

(-4a^2)(2a^{-3})^{-4}\qquad\text{use}\ (xy)^n=x^ny^n\ \text{and}\ (x^n)^m=x^{nm}\\\\=(-4a^2)\bigg(2^{-4}a^{(-3)(-4)}\bigg)\qquad\text{use}\ 4=2^2\\\\=(-2^2a^2)(2^{-4}a^{12})\\\\=-(2^2)(2^{-4})(a^2a^{12})\qquad\text{use}\ x^nx^m=x^{n+m}\\\\=-2^{2+(-4)}a^{2+12}\\\\=-2^{-2}a^{14}\qquad\text{use}\ x^{-n}=\dfrac{1}{x^n}\\\\=-\dfrac{1}{2^2}a^{14}\\\\=-\dfrac{a^{14}}{4}

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4 years ago
Y=x+5 <br> 4x+y=20 <br> show work
evablogger [386]

Answer:

(3,8)

Step-by-step explanation:

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