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VashaNatasha [74]
3 years ago
7

URGENT HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Mathematics
2 answers:
kari74 [83]3 years ago
6 0

Answer: a=−2.3

a+0.3=-2 : a=-2.3

a+0.3=-2 = a=-2.3

Subtract 0.3 from both sides

a+0.3-0.3=-2-0.3

Simplify

a=-2.3

True [87]3 years ago
3 0
<span>a+0.3=−2
a = - 2 - 0.3
a = - 2.3

answer is a. </span><span>a=−2.3 </span>first choice
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What is the y-value of the vertex of the function f(x)=-(x-3)(x+11)
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so, this is a quadratic equation, meaning two solutions, and we have a factored form of it, meaning you can get the solutions by simply zeroing out the f(x).

\bf \stackrel{f(x)}{0}=-(x-3)(x+11)\implies 0=(x-3)(x+11)\implies x= \begin{cases} 3\\ -11 \end{cases} \\\\\\ \boxed{-11}\stackrel{\textit{\large 7 units}}{\rule[0.35em]{10em}{0.25pt}}-4\stackrel{\textit{\large 7 units}}{\rule[0.35em]{10em}{0.25pt}}\boxed{3}

so the zeros/solutions are at x = 3 and x = -11, now, bearing in mind the vertex will be half-way between those two, checking the number line, that midpoint will be at x = -4, so the vertex is right there, well, what's f(x) when x = -4?

\bf f(-4)=-(-4-3)(-4+11)\implies f(-4)=7(7)\implies f(-4)=49 \\\\[-0.35em] \rule{34em}{0.25pt}\\\\ ~\hfill \stackrel{vertex}{(-4~~,~~49)}~\hfill

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3 years ago
Which graph best represents y=−2x+3
Savatey [412]

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download graphing calc, it'll help u sm

Step-by-step explanation:

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4 0
3 years ago
HELP ASAP please help I’ll mark as a brnlist
Mariana [72]

Answer:

Step-by-step explanation:

perpendicular (P) = 6

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Lorico [155]
First you have make the 2 and a half into 5/2. Then you have to find a common denominator of the two fractions, which would be 8. So the 7/8 you dont need to do anything to but the 5/2 you do... so multiply both the top and the bottom by 4 so you can get 8 on the bottom. that would be 20/8. now you can add them. so 7/8 + 20/8 = 27/8 
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Answer:

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