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Aleks [24]
2 years ago
15

I finished this, but can you please check whether I am right, thank you! (I submitted screenshots, and the marked answers are th

e ones I selected.)

Mathematics
2 answers:
shutvik [7]2 years ago
6 0

Answer:

0.9721

Step-by-step explanation:

Your multiple choice answers are correct.

For problem 2, we'll use error estimation:

1/(n+1)⁵ < 0.0001

(n+1)⁵ > 10000

n+1 > 6.3

n > 5.3

n = 6

We need to sum the first 6 terms.

∑₁⁶ (-1)ⁿ⁺⁵ / n⁵

= 1/1⁵ − 1/2⁵ + 1/3⁵ − 1/4⁵ + 1/5⁵ − 1/6⁵

≈ 0.9721

Katena32 [7]2 years ago
5 0

Answer:

looks good!

Step-by-step explanation:

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bulgar [2K]

Answer:

y = -4

Step-by-step explanation:

First, let's find the slope. Since the line is horizontal, it's slope has to be 0 (this is because slope = rise/run, there is no "rise" in a horizontal line therefore the slope is 0)

Now, we need to find the y-intercept. This is where the line intercepts the y-axis. Looking at the graph, the line intercepts the axis at (0,-4), therefore the y-intercept is -4.

The equation would be:

y=0x-4

y=-4

5 0
2 years ago
Z varies jointly as x and y. z=60 when x=5 and y=6. find z when x = 7 and y=3
Aneli [31]

Answer:

z = 42

Step-by-step explanation:

The question can be answered in 2 steps as follows:

Step 1: Calculation of the constant of the variation

The equation for the joint variation can be given as follows:

z = cxy ................... (1)

Where;

z = 60

c = constant = ?

x = 5

y = 6

Substituting the values into equation (1) and solve c, we have:

60 = c * 5 * 6

60 = c * 30

c = 60 / 30

c = 2

Step 2: find z when x = 7 and y = 3

Since from Step 1 c = 2, we now use equation (1) and substitute the values into it to find z as follows:

z = 2 * 7 * 3

z = 42

4 0
3 years ago
Rewrite f(x) into vertex form by completing the square f(x)=−x2+8x+9​
GalinKa [24]

Answer:

vertex  = ( 4  ,  25 )

Step-by-step explanation:

given a parabola in  standard form  y =  a x 2 + b x + c x ; a ≠ 0

then the x-coordinate of the vertex is

X vertex=-b/2a

y=-x2+8x+9 with a=-1 b=8 c=9

X vertex= -8/-2=4

substitute the value on the equation

Y vertex = -(4)squared+8(4)+9=25

3 0
2 years ago
Josie is looking at buying a new phone for $800.If she does not want to pay the entire $800 she has the option of buying the pho
exis [7]

Answer:A 131.25%

Step-by-step explanation:

6 0
3 years ago
PLEASE HELP
Colt1911 [192]

Answer:

B.In slope-intercept form, the slope is −79.These values are A and B, but with the opposite sign, so the slope of the line from the equation in standard form is −AB.

Step-by-step explanation:

A is being moved to the other side of the equation so it has to be negative and is multiplied by B since the y value has to be divided to equal the base of y not 9y but y.

7 0
3 years ago
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