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3 years ago

Find the equation of the axis of symmetry and the coordinates of the vertex of the graph of the function: y=4x^2-8x-3

Mathematics

1 answer:

In-s [12.5K]3 years ago

6 0

D. x= -1; vertex: (-1,-7)

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Is 0.25 rational or irrational

love history [14]

0.25 is rational because it is a terminating (means 'its stops') fraction.

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3 years ago

Only do 7. iii<br>I will mark you as brainliest.. I don't have time please fasttt

Sophie [7]

Answer:

Check my explanation

Step-by-step explanation:

(i) the area of the floor is 30m² (6m · 5m)

(ii) the perimeter of the floor is 22m (6m + 5m + 6m + 5m)

(iii) the area of the walls is:

24m² (for the 6m by 4m walls)

20m² (for the 5m by 4m walls)

88m² in total total

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3 years ago

What is the easiest to use to solve x2-6=0?

Tema [17]

Factoring may be the easiest one

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3 years ago

Read 2 more answers

Show that if S1 and S2 are subsets of a vector space V such that S1 c S2 then span(S1) c span(S2). In particular, if S1 c S2 the

klemol [59]

Answer:

See proof below

Step-by-step explanation:

Assume that V is a vector space over the field F (take F=R,C if you prefer).

Let $x\in span(S_1)$ . Then, we can write x as a linear combination of elements of s1, that is, there exist $v_1,v_2,\cdots,v_k \in S_1$ and $a_1,a_2,\cdots,a_k\in F$ such that $x=a_1v_1+a_2v_2+\cdots+a_kv_k$ . Now, $S_1\subseteq S_2$ then for all $y\in S_1$ we have that $y\in S_2$ . In particular, taking $y=v_j$ with $j=1,2,\cdots,k$ we have that $v_j\in S_2$ . Then, x is a linear combination of vectors in S2, therefore $x\in span(S_2)$ . We conclude that $span(S_1)\subseteq span(S_2)$ .

If, additionally $S_2\subseteq S_1$ then reversing the roles of S1 and S2 in the previous proof, $span(S_2)\subseteq span(S_1)$ . Then $span(S_1)\subseteq span(S_2)\subseteq span(S_1)$ , therefore $span(S_1)=span(S_2)$ .

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2 years ago

In 1999 the population of Austria was one-third the population of Nepal. At that time the number of people living in Austria was

kari74 [83]

The answer would be 24,300,000 people living in Nepal.

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3 years ago