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yarga [219]
3 years ago
8

The mean of a set of 10 number is 60. When a number x is added to the set the mean is changed to 65

Mathematics
1 answer:
NikAS [45]3 years ago
8 0

Answer: x=115

Step-by-step explanation:

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Write the equation of a line in slope-intercept form that has a slope of -8 and a y-intercept of (0,3).
Pavel [41]
Y=ax+b
3=-8(0)+b
3=0+b
3=b

Y=-8x+3

(I think this is right, but u might want to double check)
8 0
2 years ago
How to solve this step by step
Paha777 [63]
Yo has to factor since we assume that
if you have xy=0, x and y=0

7n^2-48n+36=0
trial and error
(7n-6)(n-6)=0

set each to zero
7n-6=0
add 6
7n=6
divide  7
n=6/7

n-6=0
add 6
n=6


n=6/7 or 6
8 0
3 years ago
I needed to write this is point slope form which I am having some difficulty understanding. Please tell me if I am correct or in
Lyrx [107]

Answer:

It looks like you wrote the equation in point-slope form perfectly!

But for part c, it seems as though x1 and y1 would represent parts of the midpoint formula. So, I would specify and say that they represent the midpoint, not just a point.      

Step-by-step explanation:

5 0
3 years ago
Jimmy thought he had purchased 7 folders, but purchased 6. What was his percent error?
OleMash [197]

Answer:

Step-by-step explanation:

Percent Error = | Actual Yield-Theoretical/ Theoretical Yield | *100%

Error= |-1/7|*100%= 14.29%

4 0
3 years ago
2(4x – 3) ≥ –3(3x) + 5x?Which number line represents the solution set for the inequality 2x – 6 ≥ 6(x – 2) + 8?
nika2105 [10]

Answer:

x<=-1/2

Step-by-step explanation:

An inequality is a mathematical relationship that compares two unequal numbers using the number line

To solve the inequality 2x – 6 ≥ 6(x – 2) + 8

We first simplify both sides of the inequality

2x-6≥6x-12+8

2x-6≥6x-4

Add 6 to both sides

2x≥6x+2

-4x≥2

x≥2/-4

Sign changes when we divide both sides of equation by a negative sign

x<=-1/2

Therefore x is less than or equal to -1/2 on the number line

5 0
2 years ago
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