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3 years ago

Find x intercepts for x squared +4x-5=0

Mathematics

2 answers:

katrin2010 [14]3 years ago

5 0

X=1. if 1 to the second power=1 and four times 1=4, 1+4-5=0.

dedylja [7]3 years ago

5 0

X=1 because it is the the only number that would make the math sentence work.

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6 miles. Hopes this helps.

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4 years ago

The cost of 3 scarves is $80.25. What is the unit price?

Lynna [10]

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3 years ago

Read 2 more answers

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3 years ago

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gulaghasi [49]

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3 0

4 years ago

The function f is linear. If f(2) = 2 and f(-6)=6 find f(6)

lina2011 [118]

$The\ slope-intercept\ form:y=mx+b\\\\f(2)=2\to for\ x=2\to y=2\\f(-6)=6\to for x=-6\to y=6\\\\put\ in\ equation\ of\ the\ line:\\\\ -\left\{\begin{array}{ccc}2=2m+b\\6=-6m+b\end{array}\right\ \ \ |subtract\ sides\ of\ the\ equations\\----------\\.\ \ \ -4=8m\ \ \ \ \ |divide\ both\ sides\ by\ 8\\.\ \ \ \ \boxed{m=-\frac{1}{2}}\\\\put\ m=-\frac{1}{2}\ to\ equation\ 2=2m+b:\\\\2=2\cdot(-\frac{1}{2})+b\\2=-1+b\ \ \ \ |add\ 1\ to\ both\ sides\\\boxed{b=3}\\\\\boxed{\boxed{y=-\frac{1}{2}x+3}}$

$therefore:f(x)=-\frac{1}{2}x+3\Rightarrow f(6)=-\frac{1}{2}\cdot6+3=-3+3=0\\\\Answer:\boxed{f(6)=0}$

5 0

3 years ago