3 years ago

Write an equation in x to represent each statement below. Do not solve the equation.

Mathematics

1 answer:

worty [1.4K]3 years ago

7 0

1st statement: x+4=x/2+10
2nd statement: x^2 +6=2x+9

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When class 11Y1 found that their favourite teacher, Mr Musson, was leaving they decided to organise a party for him. Lewis, one

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Answer: £14.94

Step-by-step explanation:

36 cartons at £1.56 for 4 = 14.04

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3 years ago

Solve: 2x-3= 5(x+ 6) OA. x= -9 OB. x=-11 OC. x=-3 OD. x- 33

alexgriva [62]

Answer: the correct answer is b x=11

Step-by-step explanation:

2x - 3x + 3x = 5x + 30 + 3

2x = 5x + 33

( 2x - 5x = 5x + 33 - 5x

(1/3)-3x = 33x (1/3) Here we divide it but since it is 1/3, it is the same as dividing 3 divided by 11

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3 years ago

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Alex17521 [72]

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3 years ago

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Solve the equation A+b - c =180 for C

spayn [35]

A = 180
b = 180
c = 180

180+180-180 = 180

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3 years ago

Given that X ~ N(120, 35). We survey samples of 25 and are interested in the distribution of X-bar. Find the z-score associated

lubasha [3.4K]

Answer:

Option c -2.8571

Step-by-step explanation:

z-score are calculated as

$z=\frac{xbar-mean}{\frac{S.D}{\sqrt{n} } }$ .

We are given that mean=120 and standard deviation=S.D=35 as X~N(120,35).

Sample size=n=25.

We have to find z-score for x-bar=100. So,

z-score=[100-120]/[35/√25]

z-score=[-20]/[35/5]

z-score=-20/7

z-score=-2.8571.

Thus, the z-score associated with x-bar = 100 is -2.8571.

8 0

3 years ago