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Lelu [443]
3 years ago
7

John's grades in Algebra are: 65, 83, and 93. What grade does John need on the final exam to get an 85

Mathematics
1 answer:
hoa [83]3 years ago
8 0

Answer:

99 marks

Step-by-step explanation:

Let 'x' be the mark in final exam

Sum of all the data's/ Number of data's = Mean

\frac{65+83+93+x}{4}=85\\\\\\\frac{241+x}{4} = 85

241 + x  = 85*4

241 + x = 340

       x = 340 - 241

x = 99

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Answer:

What does the question even mean?

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If it is so.. then,

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7 0
3 years ago
Segment AB has and endpoint at A (2,5) and a mod point at M (4,0), find the other endpoint (B).
steposvetlana [31]

Answer:

The other endpoint B= (6, -5)

Step-by-step explanation:

Given:

One end point A=  (2,5)

Mid point M = (4,0)

To Find:

The Other point =?

Solution:

According to midpoint formula, if (x1, y1) and (x2, y2) are two ends of a line then it’s midpoint is given by :  

M(x,y)= \frac{x1+ x2}{2} ,\frac{y1+ y2}{2}

Using the above formula

4=\frac{2+x_2}{2}..................................(1)

0=\frac{5+y_2}{2}..................................(2)

Solving equation(1)

tex]8=2+x_2[/tex]

x_2=8-2

x_2=6

Solving equation(2)

0\times 2=\frac{5+y_2}{2}

0=5+y_2

-5=y_2

Thus x_2=6 and  y_2 =-5

6 0
3 years ago
ABCD is a quadrilateral that has a four right angle What is the most accurate way to classify this quadrilateral ​
lisov135 [29]

Answer:

A rectangle

Step-by-step explanation:

A square can be a rectangle but a rectangle can't always be a square.

7 0
3 years ago
The manager of a grocery store selected 100 customers at random to ask what the maximum price is
Brilliant_brown [7]
What is the rest of the question?
8 0
3 years ago
a wildlife manager determines that the function y=200x1.07* represents the deer population at a state park x years after the pop
Kobotan [32]

Answer:

Table:

0,200

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8,344

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Step-by-step explanation:

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8 0
3 years ago
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