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3 years ago

Write the Riemann sum to find the area under the graph of the function f(x) = x^2 from x = 1 to x = 5.

Mathematics

2 answers:

prohojiy [21]3 years ago

8 0

$\lim_{n \to \infty}$ ∑ -- agggg

The 2nd one, but get me a minute to write up the explaination/equation I can't do it with the symbol brainly provides

makkiz [27]3 years ago

6 0

I think the first one or the thrid one
hope this help

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(5 4 – 2) × (–2) = ? <br> a. 22 <br> b. –14 <br> c. 14 <br> d. –22

tamaranim1 [39]

The correct answer is b. -14
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6 0

2 years ago

!!!!!!!!!!!!!!!!!!!!!!!!!

mart [117]

Answer:

180-43

Step-by-step explanation:

43 and x are supplementary which means they both should equal 180

8 0

2 years ago

Read 2 more answers

At noon jolene began walking at 2 miles per hour. At 1:00 pm Carly started following the same route walking at 3 miles per hour.

m_a_m_a [10]

My best guess is 3:00?

8 0

2 years ago

Suppose you pick two cards from a deck of 52 playing cards. What is the probability that they are both queens?

photoshop1234 [79]

Answer:

0.45% probability that they are both queens.

Step-by-step explanation:

A probability is the number of desired outcomes divided by the number of total outcomes

The combinations formula is important in this problem:

$C_{n,x}$ is the number of different combinations of x objects from a set of n elements, given by the following formula.

$C_{n,x} = \frac{n!}{x!(n-x)!}$

Desired outcomes

You want 2 queens. Four cards are queens. I am going to call then A,B,C,D. A and B is the same outcome as B and A. That is, the order is not important, so this is why we use the combinations formula.

The number of desired outcomes is a combinations of 2 cards from a set of 4(queens). So

$D = C_{4,2} = \frac{4!}{2!(4-2)!} = 6$

Total outcomes

Combinations of 2 from a set of 52(number of playing cards). So

$T = C_{52,2} = \frac{52!}{2!(52-2)!} = 1326$

What is the probability that they are both queens?

$P = \frac{D}{T} = \frac{6}{1326} = 0.0045$

0.45% probability that they are both queens.

4 0

2 years ago

Which equation matches the graph below?

Oksana_A [137]

Answer:Given that the graph shows tha the functión at x = 0 is below the y-axis, the constant term of the function has to be negative. This leaves us two possibilities:

y = 8x^2 + 2x - 5 and y = 2x^2 + 8x - 5

To try to discard one of them, let us use the vertex, which is at x = -2.

With y = 8x^2 + 2x - 5, you get y = 8(-2)^2 + 2(-2) - 5 = 32 - 4 - 5 = 23 , which is not the y-coordinate of the vertex of the curve of the graph.

Test the other equation, y = 2x^2 + 8x - 5 = 2(-2)^2 + 8(-2) - 5 = 8 - 16 - 5 = -13, which is exactly the y-coordinate of the function graphed.

Step-by-step explanation:

6 0

3 years ago