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Marrrta [24]
4 years ago
15

Please help me answer all of them

Mathematics
2 answers:
Setler79 [48]4 years ago
5 0

Answer:

1. 3:4

2. 1 : 3

3. 3 : 1

4. 1 : 5

5. 2: 5

Step-by-step explanation:

Marizza181 [45]4 years ago
4 0

Answer:

1. 3:4 (because 9÷3 is 3 and 12÷3 is 4)

2. 1:3 (because 2÷2 is 1 and 6÷2 is 3)

3. 3:1 (because 21÷7 is 3 and 7÷7 is 1)

4. 1:5 (because 3÷3 is 1 and 15÷3 is 5)

5. 2:5 (because 4÷2 is 2 and 10÷2 is 5)

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Construct a confidence interval of the population proportion at the given level of confidence. x = 125, n = 250, 90 % confidence
madam [21]

Answer: 90% confidence interval would be (0.448, 0.552).

Step-by-step explanation:

Since we have given that

x = 125

n = 250

So, \hat{p}=\dfrac{x}{n}=\dfrac{125}{250}=0.5

We need to find the 90% confidence interval.

so, z = 1.64

So, interval would be

\hat{p}\pm z\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}\\\\=0.5\pm 1.64\sqrt{\dfrac{0.5\times 0.5}{250}}\\\\=0.5\pm 0.0519\\\\=(0.5-0.0519,0.5+0.0519)\\\\=(0.448,0.552)

Hence, 90% confidence interval would be (0.448, 0.552)

3 0
4 years ago
Question<br> Find an equation for the line passing through (2, -1) with a slope of 5/2
aleksandrvk [35]

Answer:

y=52x+b.

Step-by-step explanation:

since point (2,1) satisfies the equation.

4 0
3 years ago
Can someone please help
iren [92.7K]
So the sides ML and MN are exactly the same. Your equation would look something like this...
3x = x + 10
You first subtract x from both sides to isolate the variable.
2x = 10
Divide 2 from both sides.
x = 5
5 is the length of MN.
I hope this helps love! :)
3 0
3 years ago
-5x -x equals 2 + x⁣
kozerog [31]

Answer:

2/5

Step-by-step explanation:

= -5x - x = 2 + x

= -5x - x - x = 2

= x - x - x = -2/5

= -x = -2/5

= x = 2/5

4 0
3 years ago
Rodney is burning a music CD. The CD holds at most 90 minutes of music.Rodney has already selected 55 minutes of music. Write an
Likurg_2 [28]

Answer:

x < 55 x+55=90 so 90-55= 35 x=35

Step-by-step explanation:

5 0
4 years ago
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