Estimate the solution of a^2=21 to the nearest tenth

Mathematics

1 answer:

inysia [295]4 years ago

5 0

7 i think hope it helps

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Factor 2x² + 11x + 15 using algebra tiles

liq [111]

Answer:

(2x+5)(x+3)

Step-by-step explanation:

Factor 2x2+11x+15

2x2+11x+15

=(2x+5)(x+3)

-lavira :)

5 0

3 years ago

What is the solution to this equation x/5=25

amid [387]

Answer:

x = 125

Step-by-step explanation:

Given

$\frac{x}{5}$ = 25

Multiply both sides by 5 to clear the fraction

x = 5 × 25 = 125

x = 125

6 0

3 years ago

Read 2 more answers

An airline finds that if it prices a cross-country ticket at $200, it will sell 300 tickets per day. It estimates that each $20

olya-2409 [2.1K]

We can write that as a function:

$f(n)=(200 -20n) * (300 + 50n)\\f(n)=60000+10000n-6000n-1000n^2\\f(n)=-1000n^2+4000n+60000\\$

where $n$ is the number of price reductions. We can see that it is a quadratic function which has the biggest value at P = (p, q). It means that p is the number of reductions which results in the biggest profit.

$p=\frac{-b}{2a}=\frac{-4000}{-2000}=2$

It means that it's the best to make 2 price reductions for the company. The tickets should be sold for $200 - 2 * $20 = $160. It results in 2 * 50 more tickets sold which is 300 + 100 = 400.

Answer:

Ticket price: $160

Number of tickets: 400

6 0

3 years ago

Let A = {0,1,2,3,4,5} B = {2,4,6,8} C= {1,3,5,7} Verity (AUB) UC=AU (BUC)

Angelina_Jolie [31]

Hope this will help u.

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