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2 years ago

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Mathematics

1 answer:

erastova [34]2 years ago

4 0

Answer:

I have no clue... I'm very sorry...

Step-by-step explanation:

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What is the value of p so the expression 4/5-3n is equivalent to p(4-15n)

Karolina [17]

P=1/5. factor out the p to get 4p-15pn=4/5p-3n and just solve to get p=1/5

6 0

3 years ago

Luca has 15

pav-90 [236]

Answer:10 question 1/2

Step-by-step explanation:

6 0

3 years ago

Write the numerical expression to represent the following phrase: Three piles of eight pennies each, with two left over. Calcula

mr_godi [17]

Your answer woild be 3×8+2 and if solved equals 26

7 0

3 years ago

I need help please! If you do know the answer help me understand

koban [17]

Answer:

1017.4 m³

Step-by-step explanation:

Volume of cone V = (1/3)πr²h

pi = 3.14

r = 9 and r² = 81 m²

h = 12 m

V = (1/3)*3.14*81*12

V = 1017.36 rounded 1017.4 m³, which is the first answer.

5 0

3 years ago

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 $span(S_1)=span(S_2)$ .

5 0

3 years ago