2 years ago

The first 5 terms of a quadratic sequence are

Mathematics

1 answer:

Mashcka [7]2 years ago

8 0

Step-by-step explanation:

an = 2n^2 - 3 · Anonymous. -1, 5, 15, 29, 47, ... an = 2 n^2 - 3.

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There are 738 students going on a school field trip. Each bus can carry 33 students. How many buses should the school reserve?

Lady bird [3.3K]

Answer:

23 buses

Step-by-step explanation:

It comes to 22.3636364 so you need to round up.

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2 years ago

Please help me with this

emmasim [6.3K]

Answer:

BG = 3

GE = 6

Step-by-step explanation:

The ratio of lengths on BE is 2:1 and all centroid crossing median lines.

9 if broken in a 2:1 ratio is 6:3

BG is the shorter one (from centroid to midpoint on the line) so its 3

GE is the longer one (centroid to vertex) so its 6

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3 years ago

a plumber charges a $65 fee for a repair plus $35 per hour. write an equation to model the total cost y of a repair that takes x

PIT_PIT [208]

The equation is y=35x+65

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2 years ago

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If(a²-1) x²+(a-1)x+a²-4a+3=0 is an identity in x, then find the value of a

PtichkaEL [24]

Answer:

Step-by-step explanation:

$(a^2-1)x^2+(a-1)x+a^2-4a+3=0\\\\Calculate\ and\ identify\ the\ polynomials\\\\\Longleftrightarrow\ a^2x^2-x^2+ax-x+a^2-4a+3=0\\\\\Longleftrightarrow\ a^2x^2+ax+a^2-4a+3=x^2+x+0\\\\\Longleftrightarrow\ \left\{\begin{array}{ccc}a^2&=&1\\a&=&1\\a^2-4a+3&=&0\\\end{array} \right.\\\\\Longleftrightarrow\ \left\{\begin{array}{ccc}(a-1)(a+1)&=&0\\a-1&=&0\\(a-1)(a-3)&=&0\\\end{array} \right.\\\\\\We\ must\ exclude\ a=-1\ and\ a=3\ (not\ solution)\\\Longrightarrow\ a=1\\$

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2 years ago

Can someone help please?

kirza4 [7]

Answer:

Z = 60°

Step-by-step explanation:

Since, given triangles are similar. Corresponding angles of similar triangles are congruent.

Therefore,

Z = 180° - (65° + 55°)

Z = 180° - 120°

Z = 60°

4 0

2 years ago

Read 2 more answers