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Dafna11 [192]
2 years ago
6

Ok some one ask me what 20 + 20 - 20 is said its 20 e didnt belive me i know thats the right anser

Mathematics
1 answer:
postnew [5]2 years ago
6 0

Answer:

it is because 20 + 20 is 40 and then 40 - 20 = 20

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What is the range of the function f(x) = -2(6^x) +3?<br><br><br> Answer is B
Oksana_A [137]

Answer:

You are right

Step-by-step explanation:

5 0
3 years ago
4x – 3y=8<br> 2. 5x – 2y = -11
AlladinOne [14]

Answer:

x = -7

y =  - 12

Step-by-step explanation:

The given system is:

4x-3y=8

5x-2y=-11

We make x the subject in the top equation to get:

x =  \frac{3}{4}y + 2

Plug this expression for x in the bottom equation to get

5( \frac{3}{4}y + 2) - 2y=  - 11

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Group similar terms

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6 0
3 years ago
Which function has a vertex at ( 2 , -5 )?
Mice21 [21]
The answer is C) y= |x-2| -5
3 0
3 years ago
It is generally believed that the mean value of the district's total SAT score distribution is equal to 1200 (the null hypothesi
g100num [7]

Answer:

The corresponding p-value, is p = 1

Step-by-step explanation:

The maximum score SAT score, n =  1,600

The mean of the district's total SAT score distribution = 1,200

The claim of one of the districts principal, is the that mean of the district's total SAT score distribution ≠ 1,200

Using proportions, we have;

p = 1,200/1,600 = 0.75

q = 1 - p = 0.25

The margin of error, E = Z√(p·q/n)

∴ E = 5% = Z×√((0.75 × 0.25)/1,600)

z = 0.05/(√((0.75 × 0.25)/1,600)) ≈ 4.61880

Therefore, the corresponding p-value, p = 1

7 0
3 years ago
Which could be the missing data item for the given set of data if the median of the complete data set is 50?
gogolik [260]

Answer:

Find the median of this data

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Now the median should be 50 so take 50 - 40 = 10

The missing number from the data is 10

5 0
3 years ago
Read 2 more answers
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