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beks73 [17]
3 years ago
5

Jim has grades of 84, 65, and 76 on three math tests. What grade must he obtain on the next test to have an average of exactly 8

0 for the four tests?
Mathematics
2 answers:
Fynjy0 [20]3 years ago
8 0
x-\ frade\ from\ next\ test\\\\
\frac{84+65+76+x}{4}=80\ \ \ \ | multiply\ by\ 4\\\\
225+x=320\ \ \ \ | subtract\ 225\\\\
x=95\\\\
He\ should\ have\ 95\ points.
KatRina [158]3 years ago
7 0
The answer would be 95, if you add 95 to the numbers given and divide them by 4 you'll get 80 percent
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What is the equation of the line perpendicular to y = -x+6 that passes through the
Sindrei [870]

Answer:

y=x-3

Step-by-step explanation:

Hi there!

<u>What we need to know:</u>

  • Linear equations are typically organized in slope-intercept form: y=mx+b where m is the slope and b is the y-intercept (the value of y when the line crosses the y-axis)
  • Perpendicular lines always have slopes that are negative reciprocals (ex. 3 and -1/3, 1/2 and -2, etc.)

<u>1) Determine the slope (m)</u>

<u />y = -x+6

Looking at the given line, we can identify clearly that -1 is in the place of m, making it the slope of the line. Because perpendicular lines have slopes that are negative reciprocals of each other, we know that the slope of the line we're solving for is 1. Plug this into y=mx+b:

y=x+b

<u>2) Determine the y-intercept (b)</u>

y=x+b

Plug in the given point (4,1)

1=4+b

Subtract 4 from both sides

1-4=4+b-4\\-3=b

Therefore, the y-intercept is -3. Plug this back into y=x+b:

y=x-3

I hope this helps!

7 0
3 years ago
What is the slope and y-intercept for 7x+2y-15=13
Orlov [11]

Answer:

-3.5 14

Step-by-step explanation:

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5 0
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Let tk(x)tk(x): be the taylor polynomial of degree k of the function f(x)=sin(x)f(x)=sin⁡(x) at a=0a=0.suppose you approximate f
Aloiza [94]
<span>Ans : Note that: sin(x) = sum(n=0 to infinity) [(-1)^n * x^(2n + 1)]/(2n + 1)!. Then, since the series is alternating, the error in the approximation found by taking the first n terms of the series is no bigger than the n+1'th term. In other words: E ≤ a_n+1 = x^(2n + 3)/(2n + 3)!. (Note that a_n does not include (-1)^n, the alternating part) We need that 1/6 ≤ x^(2n + 3)/(2n + 3)!. Given |x| < 1, n = 2 will be the least integer solution. Thus, we need 2 + 1 = 3 terms.</span>
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Which best describes the slope of this line?
olga nikolaevna [1]

Answer:

Undefined because there is no slope or y - intercept

Step-by-step explanation:

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evablogger [386]

Answer:

Step-by-step explanation:

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6 0
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