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3 years ago

6

Jackson has n autographs in his autograph book. Yesterday he got 3 more autographs. Write an expression to show how many autogra

phs are in his book now.

1 answer:

Harlamova29_29 [7]3 years ago

8 0

$3 + n$
that's the answer

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Approximate the area between the xxx-axis and h(x) = \dfrac{1}{7-x}h(x)= 7−x 1 h, (, x, ), equals, start fraction, 1, divided

tiny-mole [99]

Answer:

$\dfrac{47}{60}$ sq. units.

Step-by-step explanation:

The given function is

$h(x)=\dfrac{1}{7-x}$

We need to find the area between x-axis and the given function from x=2 to x=5.

Left Riemann sum formula of area:

$Area=\sum_{n=0}^{N-1}f(x_n)(\Delta x_n)$

For given question,

$Area=\sum_{n=2}^{5-1}f(x_n)(\Delta x_n)$

$Area=\sum_{n=2}^{4}f(x_n)(\Delta x_n)$

$Area=f(x_2)(3-2)+f(x_3)(4-3)+f(x_4)(5-4)$

Now,

$Area=\dfrac{1}{7-2}\times (1)+\dfrac{1}{7-3}\times (1)+\dfrac{1}{7-4}\times (1)$

$Area=\dfrac{1}{5}+\dfrac{1}{4}+\dfrac{1}{3}$

$Area=\dfrac{12+15+20}{60}$

$Area=\dfrac{47}{60}$

Therefore, the required area is $\dfrac{47}{60}$ sq. units.

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3 years ago

B. Find the angle measures.<br> 7x+<br> 7<br> 9x + 12<br> 490

Lubov Fominskaja [6]

Is 7x+7 and then what. Iam confused

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3 years ago

(2)+(-13)=<br>whats the answer?

ziro4ka [17]

Answer:

$- 11$

Step-by-step explanation:

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3 years ago

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nignag [31]

Answer:

5x+10

Step-by-step explanation:

Distribute:

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Combine Like Terms:

=5x+15+−5

=(5x)+(15+−5)

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3 years ago

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